Date   

ITU Region 1 wants to kill 2m

Lou Giliberto (KD7HCW)
 

http://www.arrl.org/news/no-strong-opposition-to-144-146-mhz-reallocation-proposal-at-cept-meeting

So, how will this affect Satellite / EME, APRS, etc.?  Not in any good way.

Obligatory alarmist video
https://youtu.be/lf14OSTzLNQ


Sent with ProtonMail Secure Email.


Icom 7000 for sale

Ken Koch WA7KK
 

I've got an Icom 7000 I'm not using.  This transceiver supports HF, 50Mhz, VHF, and UHF.   The radio includes a remote mounting kit (head cable, an extended microphone cable, mount) an extra microphone, the paper manual, and the original box.  The extra mic has only limited capability.   The radio is in great working order.  The only cons are slight scuffing on the head display plastic.  The power cord does has also been cut down, but has Powerpole connectors.  It is an ideal radio for those who want a mobile rig with HF capability.

I'm asking $600.


Re: SWR cable or ant problem?

Lou Giliberto (KD7HCW)
 

The other issue with the 7100 (I have one) is that it will use its internal swr reading to roll back power. So I checked my connections with my external meter and the 7100 thinks that parts of 70cm are high. I just live with it because it hits the repeaters I want and I don't have time to play with feedline length.

If I ever put it in my truck I'll be more concerned because higher chance of emergency simplex use there.

The nice thing about ham radio, as Ryan has figured out, is that any problem can be solved by throwing a lot of money at it, sigh.

Sent from ProtonMail mobile



-------- Original Message --------
On Jun 28, 2019, 4:51 PM, W7ABD < w7abd1@...> wrote:

High Ryan,

Welcome to the strange world of RF...  Sometimes (maybe all the time...) it can do weird stuff and give you strange results.  And not always repeatable..

Lou is right.  The higher the frequency, the harder it is to reliably measure SWR.  I almost always use an external SWR Meter for VHF/UHF frequencies, rather than the 7100's internal metering.

Your antenna system includes the coax, the antenna and anything else in-line (or sometimes beside) the feedline between the radio and the final radiating element of the antenna.  So your next setup is to isolate the different parts of the feedline and check them one at a time...  Invest in a simple SWR/Power meter and a small dummy load.  They are not that expensive and will pay for themselves many times over...

Some equipment examples below.

Digital SWR/Power Meter:
https://www.amazon.com/gp/product/B01M7QPXEY/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

Dummy Load:
https://www.amazon.com/Mcbazel-Surecom-0014-0155-PL259-1-0GHz/dp/B07MH6Q39N/ref=sr_1_7?keywords=dummy+load&qid=1561765102&s=gateway&sr=8-7

Jim
W7ABD


On 06/28/19 15:08, Lou Giliberto (KD7HCW) via Groups.Io wrote:
The 7100 swr meter is flaky at the higher frequencies. Icom quietly put a note regarding that in the advanced manual. For non HF use an external swr meter.


Sent from ProtonMail mobile



-------- Original Message --------
On Jun 28, 2019, 2:48 PM, Ryan - KJ7GIE < rsm@...> wrote:

I am now the happy owner of an IC-7100. Thanks much to Tom for his very nice overview during field day it convinced me to go get me one. I'm also now the unhappy owner of some odd SWR numbers since the 7100 has an internal SWR meter. I also now hate PL-259/SO-239 connectors.

But back to my odd SWR numbers. Here they are:
144.100 SWR tested: 1.5
147.5 SWR tested: 2.1
432.5 SWR tested: 3.0
446.2 SWR tested: 1.1 / 1.0
The IC-7100 sweeps a couple steps below and above that exact frequency and SWR numbers are average result.
3.0 is basically off the chart.

The middle of both bands is 1.5 or less. The reading of 2.1 on 2m seems high but being at the edge of the band I'm not so concerned. My main concern is that the edge of 70cm is off the chart. I'm using LMR400 from a 2/70 dual-band Arrow Antenna which is _supposed_ to be 1.5 or less across the entirety of both bands. I suspect if I had a loose connection I'd _not_ be able to achieve 1.0 anywhere in the band and that held true this morning when I wasn't achieving better than 2.0 anywhere and found a loose connection. I've gone back and checked everything again except for the antenna connection (ladder deployment pending). Based on the design of this antenna maybe I need to adjust the 70cm element? Loosen a screw? All suggestions welcome. Maybe my understanding of coax is incorrect and this is a coax issue? How many times must I retry screwing in those * connectors?

I don't have a dummy load or external meter. That's probably my next step huh? Verify the coax?
Would someone be willing to lend me their meter and dummy load this weekend? Would be much appreciated. At least our repeater at 441.8 is is working great.




Re: SWR cable or ant problem?

Lou Giliberto (KD7HCW)
 

For connectors go Amphenol or go home, lol


Sent from ProtonMail mobile



-------- Original Message --------
On Jun 28, 2019, 5:58 PM, Robin Amundson < wa7cpa@...> wrote:

Ryan,
I have a dummy load you can borrow. My Youkit analyzer doesn’t go higher than 10m.
73,
Robin, WA7CPA
P.s Cheap Chinese connectors that may not actually have internal connection or purchased from high quality source like DX Engineering?
> On Jun 28, 2019, at 5:15 PM, Ryan - KJ7GIE <rsm@...> wrote:
>
> I have a problem.
> That's because you've not bought enough stuff yet!
>
> OK, I get it. I will invest in a meter and dummy load and go test each bit end to end. Was really hoping I'd be able to spend some time on it this weekend but won't have the tools. I'll still go up there and at least rotate the thing a bit. Maybe it's just interacting with some duct work or something. I'll also re-verify the length of the elements and adjust a bolt or two. Attack it with the "move a little" theory.
>
> On a whim I called Arrow and they answered. Immediately after describing the problem and my install the recommendation was "take it outside, set it on the ground, test with good coax". The gentleman I spoke to was fairly convinced that, as long as the element was installed at the proper length, something up in the attic was interacting strangely with the antenna and putting it on the ground outside was the only way to verify it was not something with the antenna itself.
>
> Lesson learned... before doing the hard work verify and verify again with the proper test tools.
>
>
>


Re: SWR cable or ant problem?

Paul Butzi (W7PFB)
 

The easy thing is for me to swing by your place with my antenna analyzer and dummy load and we can sweep your antenna(s) and cables and see what’s what.

Downside: I am traveling and don’t get back until Monday afternoon.

-p

On Jun 28, 2019, at 5:15 PM, Ryan - KJ7GIE <@KJ7GIE> wrote:

I have a problem.
That's because you've not bought enough stuff yet!

OK, I get it. I will invest in a meter and dummy load and go test each bit end to end. Was really hoping I'd be able to spend some time on it this weekend but won't have the tools. I'll still go up there and at least rotate the thing a bit. Maybe it's just interacting with some duct work or something. I'll also re-verify the length of the elements and adjust a bolt or two. Attack it with the "move a little" theory.

On a whim I called Arrow and they answered. Immediately after describing the problem and my install the recommendation was "take it outside, set it on the ground, test with good coax". The gentleman I spoke to was fairly convinced that, as long as the element was installed at the proper length, something up in the attic was interacting strangely with the antenna and putting it on the ground outside was the only way to verify it was not something with the antenna itself.

Lesson learned... before doing the hard work verify and verify again with the proper test tools.



Re: SWR cable or ant problem?

Shawn / K7ATA
 

I currently have the clubs MFJ-259B that does 2-180 meters, but its easy enough to let someone else use it. :-)

--Shawn
--K7ATA

On 6/28/2019 5:58 PM, Robin Amundson wrote:
Ryan,
I have a dummy load you can borrow. My Youkit analyzer doesn’t go higher than 10m.
73,
Robin, WA7CPA
P.s Cheap Chinese connectors that may not actually have internal connection or purchased from high quality source like DX Engineering?
On Jun 28, 2019, at 5:15 PM, Ryan - KJ7GIE <@KJ7GIE> wrote:

I have a problem.
That's because you've not bought enough stuff yet!

OK, I get it. I will invest in a meter and dummy load and go test each bit end to end. Was really hoping I'd be able to spend some time on it this weekend but won't have the tools. I'll still go up there and at least rotate the thing a bit. Maybe it's just interacting with some duct work or something. I'll also re-verify the length of the elements and adjust a bolt or two. Attack it with the "move a little" theory.

On a whim I called Arrow and they answered. Immediately after describing the problem and my install the recommendation was "take it outside, set it on the ground, test with good coax". The gentleman I spoke to was fairly convinced that, as long as the element was installed at the proper length, something up in the attic was interacting strangely with the antenna and putting it on the ground outside was the only way to verify it was not something with the antenna itself.

Lesson learned... before doing the hard work verify and verify again with the proper test tools.



Re: SWR cable or ant problem?

Robin Amundson
 

Ryan,
I have a dummy load you can borrow. My Youkit analyzer doesn’t go higher than 10m.
73,
Robin, WA7CPA
P.s Cheap Chinese connectors that may not actually have internal connection or purchased from high quality source like DX Engineering?

On Jun 28, 2019, at 5:15 PM, Ryan - KJ7GIE <@KJ7GIE> wrote:

I have a problem.
That's because you've not bought enough stuff yet!

OK, I get it. I will invest in a meter and dummy load and go test each bit end to end. Was really hoping I'd be able to spend some time on it this weekend but won't have the tools. I'll still go up there and at least rotate the thing a bit. Maybe it's just interacting with some duct work or something. I'll also re-verify the length of the elements and adjust a bolt or two. Attack it with the "move a little" theory.

On a whim I called Arrow and they answered. Immediately after describing the problem and my install the recommendation was "take it outside, set it on the ground, test with good coax". The gentleman I spoke to was fairly convinced that, as long as the element was installed at the proper length, something up in the attic was interacting strangely with the antenna and putting it on the ground outside was the only way to verify it was not something with the antenna itself.

Lesson learned... before doing the hard work verify and verify again with the proper test tools.



Re: SWR cable or ant problem?

Ryan - KJ7GIE
 

I have a problem.
That's because you've not bought enough stuff yet!

OK, I get it. I will invest in a meter and dummy load and go test each bit end to end. Was really hoping I'd be able to spend some time on it this weekend but won't have the tools. I'll still go up there and at least rotate the thing a bit. Maybe it's just interacting with some duct work or something. I'll also re-verify the length of the elements and adjust a bolt or two. Attack it with the "move a little" theory.

On a whim I called Arrow and they answered. Immediately after describing the problem and my install the recommendation was "take it outside, set it on the ground, test with good coax". The gentleman I spoke to was fairly convinced that, as long as the element was installed at the proper length, something up in the attic was interacting strangely with the antenna and putting it on the ground outside was the only way to verify it was not something with the antenna itself.

Lesson learned... before doing the hard work verify and verify again with the proper test tools.


Re: SWR cable or ant problem?

W7ABD
 

High Ryan,

Welcome to the strange world of RF...  Sometimes (maybe all the time...) it can do weird stuff and give you strange results.  And not always repeatable..

Lou is right.  The higher the frequency, the harder it is to reliably measure SWR.  I almost always use an external SWR Meter for VHF/UHF frequencies, rather than the 7100's internal metering.

Your antenna system includes the coax, the antenna and anything else in-line (or sometimes beside) the feedline between the radio and the final radiating element of the antenna.  So your next setup is to isolate the different parts of the feedline and check them one at a time...  Invest in a simple SWR/Power meter and a small dummy load.  They are not that expensive and will pay for themselves many times over...

Some equipment examples below.

Digital SWR/Power Meter:
https://www.amazon.com/gp/product/B01M7QPXEY/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

Dummy Load:
https://www.amazon.com/Mcbazel-Surecom-0014-0155-PL259-1-0GHz/dp/B07MH6Q39N/ref=sr_1_7?keywords=dummy+load&qid=1561765102&s=gateway&sr=8-7

Jim
W7ABD


On 06/28/19 15:08, Lou Giliberto (KD7HCW) via Groups.Io wrote:
The 7100 swr meter is flaky at the higher frequencies. Icom quietly put a note regarding that in the advanced manual. For non HF use an external swr meter.


Sent from ProtonMail mobile



-------- Original Message --------
On Jun 28, 2019, 2:48 PM, Ryan - KJ7GIE < rsm@...> wrote:

I am now the happy owner of an IC-7100. Thanks much to Tom for his very nice overview during field day it convinced me to go get me one. I'm also now the unhappy owner of some odd SWR numbers since the 7100 has an internal SWR meter. I also now hate PL-259/SO-239 connectors.

But back to my odd SWR numbers. Here they are:
144.100 SWR tested: 1.5
147.5 SWR tested: 2.1
432.5 SWR tested: 3.0
446.2 SWR tested: 1.1 / 1.0
The IC-7100 sweeps a couple steps below and above that exact frequency and SWR numbers are average result.
3.0 is basically off the chart.

The middle of both bands is 1.5 or less. The reading of 2.1 on 2m seems high but being at the edge of the band I'm not so concerned. My main concern is that the edge of 70cm is off the chart. I'm using LMR400 from a 2/70 dual-band Arrow Antenna which is _supposed_ to be 1.5 or less across the entirety of both bands. I suspect if I had a loose connection I'd _not_ be able to achieve 1.0 anywhere in the band and that held true this morning when I wasn't achieving better than 2.0 anywhere and found a loose connection. I've gone back and checked everything again except for the antenna connection (ladder deployment pending). Based on the design of this antenna maybe I need to adjust the 70cm element? Loosen a screw? All suggestions welcome. Maybe my understanding of coax is incorrect and this is a coax issue? How many times must I retry screwing in those * connectors?

I don't have a dummy load or external meter. That's probably my next step huh? Verify the coax?
Would someone be willing to lend me their meter and dummy load this weekend? Would be much appreciated. At least our repeater at 441.8 is is working great.




Re: SWR cable or ant problem?

Lou Giliberto (KD7HCW)
 


-------- Original Message --------
On Jun 28, 2019, 3:08 PM, Lou Giliberto (KD7HCW) via Groups.Io < louis.giliberto@...> wrote:

The 7100 swr meter is flaky at the higher frequencies. Icom quietly put a note regarding that in the advanced manual. For non HF use an external swr meter.


Sent from ProtonMail mobile



-------- Original Message --------
On Jun 28, 2019, 2:48 PM, Ryan - KJ7GIE < rsm@...> wrote:

I am now the happy owner of an IC-7100. Thanks much to Tom for his very nice overview during field day it convinced me to go get me one. I'm also now the unhappy owner of some odd SWR numbers since the 7100 has an internal SWR meter. I also now hate PL-259/SO-239 connectors.

But back to my odd SWR numbers. Here they are:
144.100 SWR tested: 1.5
147.5 SWR tested: 2.1
432.5 SWR tested: 3.0
446.2 SWR tested: 1.1 / 1.0
The IC-7100 sweeps a couple steps below and above that exact frequency and SWR numbers are average result.
3.0 is basically off the chart.

The middle of both bands is 1.5 or less. The reading of 2.1 on 2m seems high but being at the edge of the band I'm not so concerned. My main concern is that the edge of 70cm is off the chart. I'm using LMR400 from a 2/70 dual-band Arrow Antenna which is _supposed_ to be 1.5 or less across the entirety of both bands. I suspect if I had a loose connection I'd _not_ be able to achieve 1.0 anywhere in the band and that held true this morning when I wasn't achieving better than 2.0 anywhere and found a loose connection. I've gone back and checked everything again except for the antenna connection (ladder deployment pending). Based on the design of this antenna maybe I need to adjust the 70cm element? Loosen a screw? All suggestions welcome. Maybe my understanding of coax is incorrect and this is a coax issue? How many times must I retry screwing in those * connectors?

I don't have a dummy load or external meter. That's probably my next step huh? Verify the coax?
Would someone be willing to lend me their meter and dummy load this weekend? Would be much appreciated. At least our repeater at 441.8 is is working great.



Re: SWR cable or ant problem?

Lou Giliberto (KD7HCW)
 

The 7100 swr meter is flaky at the higher frequencies. Icom quietly put a note regarding that in the advanced manual. For non HF use an external swr meter.


Sent from ProtonMail mobile



-------- Original Message --------
On Jun 28, 2019, 2:48 PM, Ryan - KJ7GIE < rsm@...> wrote:

I am now the happy owner of an IC-7100. Thanks much to Tom for his very nice overview during field day it convinced me to go get me one. I'm also now the unhappy owner of some odd SWR numbers since the 7100 has an internal SWR meter. I also now hate PL-259/SO-239 connectors.

But back to my odd SWR numbers. Here they are:
144.100 SWR tested: 1.5
147.5 SWR tested: 2.1
432.5 SWR tested: 3.0
446.2 SWR tested: 1.1 / 1.0
The IC-7100 sweeps a couple steps below and above that exact frequency and SWR numbers are average result.
3.0 is basically off the chart.

The middle of both bands is 1.5 or less. The reading of 2.1 on 2m seems high but being at the edge of the band I'm not so concerned. My main concern is that the edge of 70cm is off the chart. I'm using LMR400 from a 2/70 dual-band Arrow Antenna which is _supposed_ to be 1.5 or less across the entirety of both bands. I suspect if I had a loose connection I'd _not_ be able to achieve 1.0 anywhere in the band and that held true this morning when I wasn't achieving better than 2.0 anywhere and found a loose connection. I've gone back and checked everything again except for the antenna connection (ladder deployment pending). Based on the design of this antenna maybe I need to adjust the 70cm element? Loosen a screw? All suggestions welcome. Maybe my understanding of coax is incorrect and this is a coax issue? How many times must I retry screwing in those * connectors?

I don't have a dummy load or external meter. That's probably my next step huh? Verify the coax?
Would someone be willing to lend me their meter and dummy load this weekend? Would be much appreciated. At least our repeater at 441.8 is is working great.



SWR cable or ant problem?

Ryan - KJ7GIE
 

I am now the happy owner of an IC-7100. Thanks much to Tom for his very nice overview during field day it convinced me to go get me one. I'm also now the unhappy owner of some odd SWR numbers since the 7100 has an internal SWR meter. I also now hate PL-259/SO-239 connectors.

But back to my odd SWR numbers. Here they are:
144.100 SWR tested: 1.5
147.5 SWR tested: 2.1
432.5 SWR tested: 3.0
446.2 SWR tested: 1.1 / 1.0
The IC-7100 sweeps a couple steps below and above that exact frequency and SWR numbers are average result.
3.0 is basically off the chart.

The middle of both bands is 1.5 or less. The reading of 2.1 on 2m seems high but being at the edge of the band I'm not so concerned. My main concern is that the edge of 70cm is off the chart. I'm using LMR400 from a 2/70 dual-band Arrow Antenna which is _supposed_ to be 1.5 or less across the entirety of both bands. I suspect if I had a loose connection I'd _not_ be able to achieve 1.0 anywhere in the band and that held true this morning when I wasn't achieving better than 2.0 anywhere and found a loose connection. I've gone back and checked everything again except for the antenna connection (ladder deployment pending). Based on the design of this antenna maybe I need to adjust the 70cm element? Loosen a screw? All suggestions welcome. Maybe my understanding of coax is incorrect and this is a coax issue? How many times must I retry screwing in those * connectors?

I don't have a dummy load or external meter. That's probably my next step huh? Verify the coax?
Would someone be willing to lend me their meter and dummy load this weekend? Would be much appreciated. At least our repeater at 441.8 is is working great.


Re: NEED SNOVARC VOLUNTEERS for CARNATION 4th TRAFFIC MANAGEMENT

Benjamin Thompson
 

Hello again everyone,

We are still in need of a couple volunteers for the Carnation 4th of July event.  The standard time is 6:30 am to about 12:30 pm, but we can actually use a couple extra people between 6:30 and 9 am (or even if you can only come later you can help relive someone).

Please, if your available on Thursday morning, come give us a hand.

Thanks!
-Ben


Re: my DMR notes RE: tonights tech night

Ryan - KJ7GIE
 

I'd be up for that but such a session would work better in a classroom setting so maybe after HAM at the Park winds down? There are so many aspects to DMR because of its origin we'd need to know what to focus on. I'm sure programming is a big part of what people want to know and that could easily take an hour on its own going over the how and why and then actually pushing a codeplug to all student radios. I'm up for putting the hour together though. Also, the longer we push out such a session the more gear, like a hotspot, I will inevitably acquire so... you know... there's that... I'm sure we should also give students plenty of time to acquire radios and the like as well.

It might also be great to get someone from PNW DMR involved to help. I've not actually met anyone in that community as I missed their big get-together earlier this year. I can start making contacts though unless someone already knows someone and let them know we're putting together a session.


Re: my DMR notes RE: tonights tech night

Rowland
 

I would like to suggest that for those with interest in DMR that we have a DMR Elmer session either at the normal meeting or a separate one. I know just enough o get in trouble and want to know a lot more. Thoughts?

FYI.....I will be away from a computer for a few days and will not be able to comment until Monday.

Thanks,

Rowland

-----Original Message-----
From: snovarc@groups.io <snovarc@groups.io> On Behalf Of Ryan - KJ7GIE
Sent: Thursday, June 27, 2019 11:32 PM
To: snovarc@groups.io
Subject: [snovarc] my DMR notes RE: tonights tech night

There was some interest in DMR, other digital modes as well, from tonights technical net. The first radio I bought was a BTech DMR-6x2 specifically so I could play with DMR immediately. Since I've owned this radio since before I was licensed I thought I'd share some info and maybe provide a path for others to get into DMR. We're lucky here in Washington that there is a really large DMR repeater network available for us to interact with and the DMR community is very helpful and active.

Information on DMR specific to this region can be found at https://www.pnwdigital.net ... and they just updated their website so now I cannot find anything. I'll provide direct links:
http://www.pnwdigital.net/welcome.html <-- This is kind of a step by step to get associated with PNW Digital and what the network does. How to obtain a radio ID and some other bits of info required to "get on DMR".
http://www.pnwdigital.net/quick-start.html <-- For those that want to read less.
http://www.trbo.org/docs/Amateur_Radio_Guide_to_DMR.pdf <-- For those that like to read more.

Besides the Pacific Northwest DMR repeater network you'll quickly see the word "brandmeister" in reference to DMR. PNW DMR is _not_ part of the Brandmeister network. What's the Brandmeister network? It's another DMR network of "repeaters". I put repeaters in quotes because, from what I can tell, most people access the brandmeister network using a hotspot.

Hotspot? It's a small box that is network on one side and radio on the other. The network side uses the internet (your home wifi, starbucks, etc.) to attach itself to the brandmeister network. The radio side uses a simplex frequency at very low power which you tune your radio to. Now you're accessing the worldwide brandmeister DMR network at .(point)5 watts using the Internet. And, that's about all I will type about that as I've not played with it and I don't own a hotspot. Just to add... The PNW DMR network is a c-bridge network and they support the use of hotspots via the HamWAN. That's as far as I understand those words as I've not played with HamWAN either.

How do I use DMR... There is a PNW DMR repeater on Cougar Mountain and I'm able to get into that repeater with DMR better than the SnoVARC repeater. DMR is half the width of analog FM plus it's digital so that helps with low power. Ignoring how DMR works on the commercial side (it was developed by Motorola for commercial radio use) let's only focus on the amateur community and how it works for us...

oh, and this is my interpretation based on my experience with PNW DMR as your experience with DMR may be different and especially if you use the brandmeister network...

PNW DMR has set-up a number of "talk groups". A talk group is used to trigger how many repeaters in the network you want to "turn on". For example, if you key-up on Washington 1 you will light every repeater in Washington state. Want to talk locally using only the repeater you're currently tuned to? Then use a local talk group. Want to test how your signal is? Use the Parrot talk group (yes, it repeats what you said back to you). The PNW DMR website explains what talk groups are available and what they are used for. Neat huh?

Now the bad news. DMR radios are a bear to program. In order to key a talk group you need to know the frequency, offset, and tone of the repeater. Standard stuff right? OK so here where it's not standard. The talk group you want to talk on is configured as the repeater details, the talk group ID, the color code, the time slot, and probably a few other things I'm forgetting. And each time you want to use a different repeater you need to enter that talk group again with the new repeater info. My DMR radio has 1,326 "talk groups" programmed into it because each talk group is duplicated on every PNW DMR repeater. But there is the good news...

The PNW DMR site has a website where you can download text files, CSV really, of the talk group configuration. With a bit of knowledge on how to manipulate text files you can use these to load the talk groups into your radio memory slots above or below the standard analog repeater list SnoVARC uses. That's basically what I did to get my radio programmed and now have a process in place it takes me ~10 min to get an updated list from PNW DMR and load it in my radio. Happy to help anyone here.

Digital Monitor or "promiscuous mode" - Turning this on in your radio let's you monitor, or scan, every talk group on the repeater. If someone is talking on Washington 1 or Local you'll hear them and then can switch to that radio and respond. That's how a DMR radio can "hear" every talk group. You've got to on that talk group to respond though.

I'll stop here otherwise this could become a novel. I've always got my 6x2 with me at club events as it's my main radio. If you want to see it or want more info please just ask. I'm not an expert but I'll share what knowledge I have.

Oh.. and if you want to get a DMR radio I suggest the AnyTone 878. It's the most feature packed of the affordable HTs and is well supported within the PNW DMR groups.io page. The 6x2 is "ok" but is lacking a couple features of the 878 I now wish I had. Hope that is helpful and if you see some info in here which is wrong please correct. I stayed up later than I intended writing this so I expect there are some errors here and there. 73


Re: my DMR notes RE: tonights tech night

Robin Amundson
 

Excellent, clear and helpful info, Ryan. You are our DMR Elmer.

Next, try working some DX and see how many worldwide friends you make.

73,
Robin, WA7CPA

On Jun 27, 2019, at 11:32 PM, Ryan - KJ7GIE <@KJ7GIE> wrote:

[Edited Message Follows]

There was some interest in DMR, other digital modes as well, from tonights technical net. The first radio I bought was a BTech DMR-6x2 specifically so I could play with DMR immediately. Since I've owned this radio since before I was licensed I thought I'd share some info and maybe provide a path for others to get into DMR. We're lucky here in Washington that there is a really large DMR repeater network available for us to interact with and the DMR community is very helpful and active.

Information on DMR specific to this region can be found at https://www.pnwdigital.net
... and they just updated their website so now I cannot find anything. I'll provide direct links:
http://www.pnwdigital.net/welcome.html <-- This is kind of a step by step to get associated with PNW Digital and what the network does. How to obtain a radio ID and some other bits of info required to "get on DMR".
http://www.pnwdigital.net/quick-start.html <-- For those that want to read less.
http://www.trbo.org/docs/Amateur_Radio_Guide_to_DMR.pdf <-- For those that like to read more.

Besides the Pacific Northwest DMR repeater network you'll quickly see the word "brandmeister" in reference to DMR. PNW DMR is _not_ part of the Brandmeister network. What's the Brandmeister network? It's another DMR network of "repeaters". I put repeaters in quotes because, from what I can tell, most people access the brandmeister network using a hotspot.

Hotspot? It's a small box that is network on one side and radio on the other. The network side uses the internet (your home wifi, starbucks, etc.) to attach itself to the brandmeister network. The radio side uses a simplex frequency at very low power which you tune your radio to. Now you're accessing the worldwide brandmeister DMR network at .(point)5 watts using the Internet. And, that's about all I will type about that as I've not played with it and I don't own a hotspot. Just to add... The PNW DMR network is a c-bridge network and they support the use of hotspots via the HamWAN. That's as far as I understand those words as I've not played with HamWAN either.

How do I use DMR... There is a PNW DMR repeater on Cougar Mountain and I'm able to get into that repeater with DMR better than the SnoVARC repeater. DMR is half the width of analog FM plus it's digital so that helps with low power. Ignoring how DMR works on the commercial side (it was developed by Motorola for commercial radio use) let's only focus on the amateur community and how it works for us...

oh, and this is my interpretation based on my experience with PNW DMR as your experience with DMR may be different and especially if you use the brandmeister network...

PNW DMR has set-up a number of "talk groups". A talk group is used to trigger how many repeaters in the network you want to "turn on". For example, if you key-up on Washington 1 you will light every repeater in Washington state. Want to talk locally using only the repeater you're currently tuned to? Then use a local talk group. Want to test how your signal is? Use the Parrot talk group (yes, it repeats what you said back to you). The PNW DMR website explains what talk groups are available and what they are used for. Neat huh?

Now the bad news. DMR radios are a bear to program. In order to key a talk group you need to know the frequency, offset, and tone of the repeater. Standard stuff right? OK so here where it's not standard. The talk group you want to talk on is configured as the repeater details, the talk group ID, the color code, the time slot, and probably a few other things I'm forgetting. And each time you want to use a different repeater you need to enter that talk group again with the new repeater info. My DMR radio has 1,326 "talk groups" programmed into it because each talk group is duplicated on every PNW DMR repeater. But there is the good news...

The PNW DMR site has a website where you can download text files, CSV really, of the talk group configuration. With a bit of knowledge on how to manipulate text files you can use these to load the talk groups into your radio memory slots above or below the standard analog repeater list SnoVARC uses. That's basically what I did to get my radio programmed and now have a process in place it takes me ~10 min to get an updated list from PNW DMR and load it in my radio. Happy to help anyone here.

Digital Monitor or "promiscuous mode" - Turning this on in your radio let's you monitor, or scan, every talk group on the repeater. If someone is talking on Washington 1 or Local you'll hear them and then can switch to that talk group and respond. That's how a DMR radio can "hear" every talk group. You've got to have the radio set to that talk group in order to talk on that group though.

I'll stop here otherwise this could become a novel. I've always got my 6x2 with me at club events as it's my main radio. If you want to see it or want more info please just ask. I'm not an expert but I'll share what knowledge I have.

Oh.. and if you want to get a DMR radio I suggest the AnyTone 878. It's the most feature packed of the affordable HTs and is well supported within the PNW DMR groups.io page. The 6x2 is "ok" but is lacking a couple features of the 878 I now wish I had. Hope that is helpful and if you see some info in here which is wrong please correct. I stayed up later than I intended writing this so I expect there are some errors here and there. 73







my DMR notes RE: tonights tech night

Ryan - KJ7GIE
 
Edited

There was some interest in DMR, other digital modes as well, from tonights technical net. The first radio I bought was a BTech DMR-6x2 specifically so I could play with DMR immediately. Since I've owned this radio since before I was licensed I thought I'd share some info and maybe provide a path for others to get into DMR. We're lucky here in Washington that there is a really large DMR repeater network available for us to interact with and the DMR community is very helpful and active.

Information on DMR specific to this region can be found at https://www.pnwdigital.net
... and they just updated their website so now I cannot find anything. I'll provide direct links:
http://www.pnwdigital.net/welcome.html <-- This is kind of a step by step to get associated with PNW Digital and what the network does. How to obtain a radio ID and some other bits of info required to "get on DMR".
http://www.pnwdigital.net/quick-start.html <-- For those that want to read less.
http://www.trbo.org/docs/Amateur_Radio_Guide_to_DMR.pdf <-- For those that like to read more.

Besides the Pacific Northwest DMR repeater network you'll quickly see the word "brandmeister" in reference to DMR. PNW DMR is _not_ part of the Brandmeister network. What's the Brandmeister network? It's another DMR network of "repeaters". I put repeaters in quotes because, from what I can tell, most people access the brandmeister network using a hotspot.

Hotspot? It's a small box that is network on one side and radio on the other. The network side uses the internet (your home wifi, starbucks, etc.) to attach itself to the brandmeister network. The radio side uses a simplex frequency at very low power which you tune your radio to. Now you're accessing the worldwide brandmeister DMR network at .(point)5 watts using the Internet. And, that's about all I will type about that as I've not played with it and I don't own a hotspot. Just to add... The PNW DMR network is a c-bridge network and they support the use of hotspots via the HamWAN. That's as far as I understand those words as I've not played with HamWAN either.

How do I use DMR... There is a PNW DMR repeater on Cougar Mountain and I'm able to get into that repeater with DMR better than the SnoVARC repeater. DMR is half the width of analog FM plus it's digital so that helps with low power. Ignoring how DMR works on the commercial side (it was developed by Motorola for commercial radio use) let's only focus on the amateur community and how it works for us...

oh, and this is my interpretation based on my experience with PNW DMR as your experience with DMR may be different and especially if you use the brandmeister network...

PNW DMR has set-up a number of "talk groups". A talk group is used to trigger how many repeaters in the network you want to "turn on". For example, if you key-up on Washington 1 you will light every repeater in Washington state. Want to talk locally using only the repeater you're currently tuned to? Then use a local talk group. Want to test how your signal is? Use the Parrot talk group (yes, it repeats what you said back to you). The PNW DMR website explains what talk groups are available and what they are used for. Neat huh?

Now the bad news. DMR radios are a bear to program. In order to key a talk group you need to know the frequency, offset, and tone of the repeater. Standard stuff right? OK so here where it's not standard. The talk group you want to talk on is configured as the repeater details, the talk group ID, the color code, the time slot, and probably a few other things I'm forgetting. And each time you want to use a different repeater you need to enter that talk group again with the new repeater info. My DMR radio has 1,326 "talk groups" programmed into it because each talk group is duplicated on every PNW DMR repeater. But there is the good news...

The PNW DMR site has a website where you can download text files, CSV really, of the talk group configuration. With a bit of knowledge on how to manipulate text files you can use these to load the talk groups into your radio memory slots above or below the standard analog repeater list SnoVARC uses. That's basically what I did to get my radio programmed and now have a process in place it takes me ~10 min to get an updated list from PNW DMR and load it in my radio. Happy to help anyone here.

Digital Monitor or "promiscuous mode" - Turning this on in your radio let's you monitor, or scan, every talk group on the repeater. If someone is talking on Washington 1 or Local you'll hear them and then can switch to that talk group and respond. That's how a DMR radio can "hear" every talk group. You've got to have the radio set to that talk group in order to talk on that group though.

I'll stop here otherwise this could become a novel. I've always got my 6x2 with me at club events as it's my main radio. If you want to see it or want more info please just ask. I'm not an expert but I'll share what knowledge I have.

Oh.. and if you want to get a DMR radio I suggest the AnyTone 878. It's the most feature packed of the affordable HTs and is well supported within the PNW DMR groups.io page. The 6x2 is "ok" but is lacking a couple features of the 878 I now wish I had. Hope that is helpful and if you see some info in here which is wrong please correct. I stayed up later than I intended writing this so I expect there are some errors here and there. 73


Re: End Fed Half Wave setup

Dan Pflugrath
 

Ryan,
I must run a stealth antenna at my QTH. The transformer is at the peak of my house at 20 about feet with the antenna wire 26 gauge out to some trees, no ground or counterpoise other than the coax lead in. about 67 feet of wire gives me 40, 20, 15 and 10 meters without a tuner and 30, 18 and 12 meters with a tuner. It is not optimum but I make contacts with it using QRP power. The higher the better for the antenna wire but you use what you have. Let me know if you find a better solution and let me know if you need help? I can help you build one if you want.

Let me know if you find a better solution. I am always looking for a better stealth antenna.

73,
Dan Pflugrath KA7GPP
dpflugrath@...
425-941-2339

-----Original Message-----
From: snovarc@groups.io [mailto:snovarc@groups.io] On Behalf Of Ryan - KJ7GIE
Sent: Thursday, June 27, 2019 10:46 PM
To: snovarc@groups.io
Subject: Re: [snovarc] End Fed Half Wave setup

[Edited Message Follows]

Thank you everyone for the additional detail.

The reason for my question is that this is one solution I'm thinking about to get an HF antenna into my shack. My "shack" is upstairs in a bedroom and my 2/70 antenna is up in the attic. I've already run coax from the attic to the room. With that already in place the "easy" way to get an HF antenna run is to put the transformer/feed in the attic and attach to existing coax. Then drop the wire out of an attic vent to my fence and run the whatever additional feet is required along the wooden fence based upon whatever length / band(s) antenna I decide to go with. But I've not run into another example of the feed line being at the high point. Before I invested into this experiment I thought I'm ask the collective minds here.

So far I've not found that this will not work but it's obviously an additional comprise like every antenna. I will check out the FB group and continue to research. Still on the fence (pun intended) on if it's worth going forward with this design or scrapping it and finding another solution. Research never ends.

If I do decide to go forward with this idea I'm looking at ants from myantennas.com and chameleon.com. Not cheap stuff but then I don't have to do any of the math. I'll also e-mail them after I do more research. Again, appreciate the collective knowledge!





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Re: End Fed Half Wave setup

Ryan - KJ7GIE
 
Edited

Thank you everyone for the additional detail.

The reason for my question is that this is one solution I'm thinking about to get an HF antenna into my shack. My "shack" is upstairs in a bedroom and my 2/70 antenna is up in the attic. I've already run coax from the attic to the room. With that already in place the "easy" way to get an HF antenna run is to put the transformer/feed in the attic and attach to existing coax. Then drop the wire out of an attic vent to my fence and run the whatever additional feet is required along the wooden fence based upon whatever length / band(s) antenna I decide to go with. But I've not run into another example of the feed line being at the high point. Before I invested into this experiment I thought I'm ask the collective minds here.

So far I've not found that this will not work but it's obviously an additional comprise like every antenna. I will check out the FB group and continue to research. Still on the fence (pun intended) on if it's worth going forward with this design or scrapping it and finding another solution. Research never ends.

If I do decide to go forward with this idea I'm looking at ants from myantennas.com and chameleon.com. Not cheap stuff but then I don't have to do any of the math. I'll also e-mail them after I do more research. Again, appreciate the collective knowledge!


Re: End Fed Half Wave setup

Dan Pflugrath
 

The resonate end fed half wave EFHW antenna can be configured many ways and it will still work well.

 

The optimum is to place the 49:1 transformer near ground level and use an earth ground with the antenna wire cut to 1/2 wavelength at the lowest operating frequency.  The earth ground reduces noise but is not absolutely necessary.  The antenna wire works optimum in an inverted L configuration.  The coax lead in is the counter poise but with the antenna wire cut to 1/2 wavelength very little current flows in the coax counter poise.  Put an RF choke near your radio if you get RF in the shack.  Some radios are more sensitive to it than others.

 

The EFHW works as well as a 1/2 wave dipole but is also has low SWR at the multiples of the lowest operating frequency.   My 40 meter EFHW works with low SWR on 40, 20, 15, 12 and 10 meters.  There are ways to add to the antenna to get 30, 18 if needed.

 

For additional information and assistance see the End Fed Half Wave Facebook page at https://www.facebook.com/groups/EndFedHalfWaveAntennas/.  There is a ham on that page that has done considerable testing to assist with implementation.

 

This is a very popular antenna for Summits On The Air since it requires only one pole and can be either a slopper for 20 and 30 meters or an inverted V for 40 meters.  There are commercial versions available or check out the Facebook page for how easy they are to build.

 

73,

Dan KA7GPP

 

 

 

From: snovarc@groups.io [mailto:snovarc@groups.io] On Behalf Of Kirt / K7KDW
Sent: Thursday, June 27, 2019 8:47 PM
To: snovarc@groups.io
Subject: [snovarc] End Fed Half Wave setup

 

Putting this out there for others to chime in on.

During the New Ham Net tonight a question came up about setting up an End Fed Half Wave in an Inverted L configuration. 

The question was whether it mattered which end the feed point was on. My understanding is that this configuration, the feed point would be on the higher end of the "L". 

My first End Fed was a Chameleon Emcomm portable and I used their documentation on configurations with that and my MyAntennas EFHW. That document is here (PDF Warning) https://www.dropbox.com/sh/8gypgl2px8inh1k/AACF4Wr3LyK-Q5XFX2tHZ-GSa?dl=0&preview=CHA+EMCOMM+III+PORTABLE.pdf

I looked over the doc again but I couldn't find something that answered that question in there so I'm hoping someone else can give an answer to this.

Thanks
Kirt - K7KDW



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