1. snovarc@snovarc.groups.io
  2. Messages
   Date   
What is your opinion of Icoms new ic 705?

Howard E. Mahran / WA1HEM
 

I’m in need of a portable HF unit. I love the idea that this unit is both HF & VHF/UHF with lithium ion battery on board. Also same interface as the 7300. Only 10w but could carry an amp. What do you all think?

https://www.icomamerica.com/en/products/amateur/handheld/705/default.aspx

--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
Re: Carnation to Rattlesnake LOS survey

Howard E. Mahran / WA1HEM
 

Awesome Shawn! I'm interested in learning more about HAMWAN and how we can leverage it. Thank you and to the rest of the team driving this!

P.S. What software did you to create that map?
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
Re: Carnation to Rattlesnake LOS survey

Shawn / K7ATA
 

Grr. the screenshot I added didn't go through...resending

--Shawn
--K7ATA

On 7/18/2020 9:58 AM, Shawn / K7ATA via groups.io wrote:
We (K7RWB, W7PFB, K7ATA) recently did a LOS (line-of-sight) survey from the carnation shack to the HAMWAN station atop Rattlesnake Ridge.


WITHOUT roof access (new locks, new code) we were able to do a verification of LOS with binoculars from the top of the external stairs, and I have also verified using multiple online tools.
Re: Carnation to Rattlesnake LOS survey

Mike Jacob
 

Cool!
I wasn't up to speed on HAMWAN.  

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> on behalf of Shawn / K7ATA <shawn@...>
Sent: Saturday, July 18, 2020 9:58 AM
To: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io>
Subject: [SnoVARC] Carnation to Rattlesnake LOS survey
 
We (K7RWB, W7PFB, K7ATA) recently did a LOS (line-of-sight) survey from
the carnation shack to the HAMWAN station atop Rattlesnake Ridge.


WITHOUT roof access (new locks, new code) we were able to do a
verification of LOS with binoculars from the top of the external stairs,
and I have also verified using multiple online tools.


--
--Shawn
--K7ATA
Carnation to Rattlesnake LOS survey

Shawn / K7ATA
 

We (K7RWB, W7PFB, K7ATA) recently did a LOS (line-of-sight) survey from the carnation shack to the HAMWAN station atop Rattlesnake Ridge.


WITHOUT roof access (new locks, new code) we were able to do a verification of LOS with binoculars from the top of the external stairs, and I have also verified using multiple online tools.


--
--Shawn
--K7ATA
Re: 10m tuneup - total disaster and embarrassing lesson learned

Rowland
 

Don't pull too much hair out or you will look like me.......and that is a scary thought!

I would be up for a Zoom VARA class.


Thanks,

Rowland



On Fri, Jul 17, 2020 at 3:58 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:
Paul (W7PFB) - you are correct. It was a good learning experience and exactly what the drill was for… (its still frustrating ;-) and It’ll take a while to grow back the patch of hair I pulled out trying to figure it all out :-)


Paul (W7PEZ) - the tuner you have works with your 7300 via the antenna tuner connection, which is really nice,  so you won’t have the conflict of both units trying to tune at the same time. The one I have is not connected to the 7300 and is works independently - thus the conflict

On Jul 17, 2020, at 2:31 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:

The problem with two tuners is that they’re solving for a tuning solution at the same time, at varying speeds and by adjusting impedances in different ways.

In essence, each tuner is expecting a static target but the other tuner presents a moving target.  Chaos ensues.

BTW I would not call this a disaster at all, let alone a total disaster.

Total disaster is when you run into this problem for the first time right after the world goes wahoonie shaped and the lives of your family are depending on things working.

I think the correct term for this is “problem discovered and corrected during training”, which is sort of what training (and drills) are all about.

-p W7PFB
73, Don’t forget to smile and have fun!

On Jul 17, 2020, at 1:07 PM, Paul Zoba <pezoba@...> wrote:

Hmm, I don’t understand why they don’t work together? And doesn’t this happen anytime you’re on HF then? I have the LDG IT-100 tuner paired with my 7300. It tunes when I press the Tune button on the radio.

I don’t know why you’d consider this embarrassing as I don’t think it should happen at all. Seems like something isn’t working right.  Embarrassing is when I tried to call in using 70cm on a 2m beam antenna. Doh! 🤦🏼


On Jul 17, 2020, at 12:00 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4. 

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




-- 
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************



***********************************
Howard Mahran
(425) 864-5104
***********************************





--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

Re: 10m tuneup - total disaster and embarrassing lesson learned

Howard E. Mahran / WA1HEM
 

Paul (W7PFB) - you are correct. It was a good learning experience and exactly what the drill was for… (its still frustrating ;-) and It’ll take a while to grow back the patch of hair I pulled out trying to figure it all out :-)


Paul (W7PEZ) - the tuner you have works with your 7300 via the antenna tuner connection, which is really nice,  so you won’t have the conflict of both units trying to tune at the same time. The one I have is not connected to the 7300 and is works independently - thus the conflict

On Jul 17, 2020, at 2:31 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:

The problem with two tuners is that they’re solving for a tuning solution at the same time, at varying speeds and by adjusting impedances in different ways.

In essence, each tuner is expecting a static target but the other tuner presents a moving target.  Chaos ensues.

BTW I would not call this a disaster at all, let alone a total disaster.

Total disaster is when you run into this problem for the first time right after the world goes wahoonie shaped and the lives of your family are depending on things working.

I think the correct term for this is “problem discovered and corrected during training”, which is sort of what training (and drills) are all about.

-p W7PFB
73, Don’t forget to smile and have fun!

On Jul 17, 2020, at 1:07 PM, Paul Zoba <pezoba@...> wrote:

Hmm, I don’t understand why they don’t work together? And doesn’t this happen anytime you’re on HF then? I have the LDG IT-100 tuner paired with my 7300. It tunes when I press the Tune button on the radio.

I don’t know why you’d consider this embarrassing as I don’t think it should happen at all. Seems like something isn’t working right.  Embarrassing is when I tried to call in using 70cm on a 2m beam antenna. Doh! 🤦🏼


On Jul 17, 2020, at 12:00 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4. 

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




-- 
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************



***********************************
Howard Mahran
(425) 864-5104
***********************************





--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
Re: 10m tuneup - total disaster and embarrassing lesson learned

Paul Butzi (W7PFB)
 

The problem with two tuners is that they’re solving for a tuning solution at the same time, at varying speeds and by adjusting impedances in different ways.

In essence, each tuner is expecting a static target but the other tuner presents a moving target.  Chaos ensues.

BTW I would not call this a disaster at all, let alone a total disaster.

Total disaster is when you run into this problem for the first time right after the world goes wahoonie shaped and the lives of your family are depending on things working.

I think the correct term for this is “problem discovered and corrected during training”, which is sort of what training (and drills) are all about.

-p W7PFB
73, Don’t forget to smile and have fun!

On Jul 17, 2020, at 1:07 PM, Paul Zoba <pezoba@...> wrote:

Hmm, I don’t understand why they don’t work together? And doesn’t this happen anytime you’re on HF then? I have the LDG IT-100 tuner paired with my 7300. It tunes when I press the Tune button on the radio.

I don’t know why you’d consider this embarrassing as I don’t think it should happen at all. Seems like something isn’t working right.  Embarrassing is when I tried to call in using 70cm on a 2m beam antenna. Doh! 🤦🏼


On Jul 17, 2020, at 12:00 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4.

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

Re: 10m tuneup - total disaster and embarrassing lesson learned

Howard E. Mahran / WA1HEM
 

Paul - here is the unit that I’m using… of course, there’s alway a  high probability that I am not using it correctly.




On Jul 17, 2020, at 1:07 PM, Paul Zoba <pezoba@...> wrote:

Hmm, I don’t understand why they don’t work together? And doesn’t this happen anytime you’re on HF then? I have the LDG IT-100 tuner paired with my 7300. It tunes when I press the Tune button on the radio.

I don’t know why you’d consider this embarrassing as I don’t think it should happen at all. Seems like something isn’t working right.  Embarrassing is when I tried to call in using 70cm on a 2m beam antenna. Doh! 🤦🏼


On Jul 17, 2020, at 12:00 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4.

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************


***********************************
Howard Mahran
(425) 864-5104
***********************************





--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
Re: 10m tuneup - total disaster and embarrassing lesson learned

Paul Zoba, W7PEZ
 

Hmm, I don’t understand why they don’t work together? And doesn’t this happen anytime you’re on HF then? I have the LDG IT-100 tuner paired with my 7300. It tunes when I press the Tune button on the radio.

I don’t know why you’d consider this embarrassing as I don’t think it should happen at all. Seems like something isn’t working right.  Embarrassing is when I tried to call in using 70cm on a 2m beam antenna. Doh! 🤦🏼


On Jul 17, 2020, at 12:00 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4.

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

Re: 10m tuneup - total disaster and embarrassing lesson learned

Paul Butzi (W7PFB)
 

Good on you for figuring it out!



-p W7PFB
73, Don’t forget to smile and have fun!

On Jul 17, 2020, at 12:00 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4.

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

Re: 10m tuneup - total disaster and embarrassing lesson learned

Rowland
 

Howard,

Do not feel too bad.  We have all been there one way or another.  That is the beauty of drilling.  It let's you find the bad issues and correct them before a real event takes place and it is always great to publish them to all so we can learn from each other.


Thanks,

Rowland



On Fri, Jul 17, 2020 at 12:00 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:
If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4.

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

10m tuneup - total disaster and embarrassing lesson learned

Howard E. Mahran / WA1HEM
 

If my life depended on getting on 10m yesterday to report my location during a disaster - I'd be dead today. My 10m antenna is not the best to begin with. It's a 6-40m dipole. I get better luck with 10m sticks but I didn't have them set up. So for the tuneup, it was either the dipole or nothing.  Just before the tuneup, I tuned my rigs SWR to less than 1.4.

Ok so we start the tuneup and I was dead in the water.. couldn't get a message out also had lots of noise.  My SWR started to swing wildly, causing my power to swing wildly from 100w to 0. Repeated attempts to retune failed. No one could hear me and when they did it was brief and wonky.  I thought maybe my dipole crashed but a test with a meter showed a very tuneable 2.3 SWR on 29.52mhz. What the heck was going on?

After pulling my hair out it turned out to be something so silly I'm actually a little embarrassed to mention it... but I'll swallow my pride in the hopes that my stupidity will potentially prevent someone else from the same frustrating debacle. I have an LDG 100 antenna tuner. Its two parts - the tuner is remote (out near the antenna) with a small control unit that sits indoors. I have mine on a shelf below my rig. It comes on automatically when I turn on the power supply. It's a very unassuming little guy. I totally forgot about it, as its so little and unobtrusive. What the LDG does is automatically try to tune the antenna- no input needed. So... you can see the problem... In combination with my 7300, which was also set to TUNE - I had the SWR equivalent of dueling banjos! They just fought with each other, swinging the SWR wildly and eventually shutting down the 7300's Tx power to save the finals (thank goodness for that protection!). Lesson learned. I finally shut off the LDG and just used the 7300's tuner. I think all was finally stable at the point... unfortunately... the exercise was long over.... ahhh... the lessons we learn...




--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
Re: RF Grounding - Finally an article that helped

Gerard Repko
 

Great article. Saved it for when I setup my new ham schack in Texas.

73
KG7REV 
Gerard


On Jul 14, 2020, at 4:14 PM, Dale Smith <dale_smith@...> wrote:


Excellent!  

Sent from my T-Mobile 4G LTE device

------ Original message------
From: W7ABD
Date: Mon, Jul 13, 2020 10:31 PM
Cc:
Subject:Re: [SnoVARC] RF Grounding - Finally an article that helped

Nice article on grounding.  Thanks for sharing Howard!


Jim
W7ABD



On 7/13/20 21:44, Howard E. Mahran / WA1HEM wrote:
Sharing this article that I found very helpful as I design an RF grounding setup in my shack. Hope this helps someone as much as it helped me....

https://helpdesk.flexradio.com/hc/en-us/articles/204779159-Grounding-Systems-in-the-Ham-Shack-Paradigms-Facts-and-Fallacies
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

Re: RF Grounding - Finally an article that helped

Dale Smith <dale_smith@...>
 

Excellent!  

Sent from my T-Mobile 4G LTE device

------ Original message------
From: W7ABD
Date: Mon, Jul 13, 2020 10:31 PM
Cc:
Subject:Re: [SnoVARC] RF Grounding - Finally an article that helped

Nice article on grounding.  Thanks for sharing Howard!


Jim
W7ABD



On 7/13/20 21:44, Howard E. Mahran / WA1HEM wrote:
Sharing this article that I found very helpful as I design an RF grounding setup in my shack. Hope this helps someone as much as it helped me....

https://helpdesk.flexradio.com/hc/en-us/articles/204779159-Grounding-Systems-in-the-Ham-Shack-Paradigms-Facts-and-Fallacies
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************

Learn from 70+ speakers at the first–ever Virtual Ham Expo!!

Rowland
 








Subject: Learn from 70+ speakers at the first–ever Virtual Ham Expo!!



Go to https://www.qsotodayhamexpo.com/ to learn more - get registered by July 24th!


We are reaching out to let you know that despite the closure of many ham radio events, there is a great opportunity to join your fellow hams and us at the first–ever

QSO Today Virtual Ham Expo
on Saturday and Sunday, August 8 – 9, 2020.

Attendance is free and registration is now open at https://www.qsotodayhamexpo.com
with early bird prize incentives for registering by July 24, 2020.
Built on a live, virtual platform used by Fortune 500 companies and major universities, this ARRL–sanctioned hamfest will let you:
  • Learn from a packed line-up of 70+ world renowned ham radio speakers such as Ward Silver, N0AX, on Grounding and Bonding; Glen Johnson, W0GJ, on DXpeditions, and John Portune, W6NBC, on building slot antennas for HOA.
  • See demos of the latest ham radio equipment from the world's top equipment companies. You can ask questions and engage with Exhibitors through video, audio, or chat.
  • Share ideas and network with your fellow ham radio operators throughout the Expo.
And if you've never been to a Hamfest or Expo, you can participate from the convenience of your home or office without spending a dime on travel!

This platform simulates a full convention experience with an exhibit hall and exhibit booths staffed by live attendants, speaker auditorium, lobby, and lounges.

Go to https://www.qsotodayhamexpo.com/ to learn more!
Don't forget to get registered by July 24th!

We look forward to having you join us at Expo for an amazing and engaging experience.

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Re: RF Grounding - Finally an article that helped

W7ABD
 

Nice article on grounding.  Thanks for sharing Howard!


Jim
W7ABD



On 7/13/20 21:44, Howard E. Mahran / WA1HEM wrote:
Sharing this article that I found very helpful as I design an RF grounding setup in my shack. Hope this helps someone as much as it helped me....

https://helpdesk.flexradio.com/hc/en-us/articles/204779159-Grounding-Systems-in-the-Ham-Shack-Paradigms-Facts-and-Fallacies
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Howard E. Mahran
WA1HEM
(425) 864 - 5104
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RF Grounding - Finally an article that helped

Howard E. Mahran / WA1HEM
 

Sharing this article that I found very helpful as I design an RF grounding setup in my shack. Hope this helps someone as much as it helped me....

https://helpdesk.flexradio.com/hc/en-us/articles/204779159-Grounding-Systems-in-the-Ham-Shack-Paradigms-Facts-and-Fallacies
--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
Re: Wire length question

Paul Butzi (W7PFB)
 

Apparently everyone else in SnoVARC either stays up later than I do or gets up earlier.

I vote with Dan - measure to the hole in the insulator.  Any place where the wire is wrapped around itself, the effect is that doubled over portion does not contribute to the effective length.  On the scale of any HF antenna the loop going thru the insulator is the same as a wire just reaching the eye of the insulator.

And I also vote with everyone who says it doesn’t matter.  You won’t know the velocity factor of the wire to better than, say, 2%, and that source of uncertainty alone means you’re going to end up tweaking the length using your handy antenna analyzer.

-p W7PFB
73, Don’t forget to smile and have fun!

On Jul 11, 2020, at 10:04 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

I realize this might be a silly question and the significance to the overall wire length minimal but the question is burning a hole in my head: Do you count the part of the wire that is tied around the ceramic insulator when measuring wire length ?  I say “yes”

<08C416AD-97C7-4404-877F-0AA41B5874B1.jpeg>
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Howard E. Mahran
WA1HEM
(425) 864 - 5104
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<D5C8C367-259F-433D-B4F4-0733E6DA2DD5.jpeg>
Re: Wire length question

Paul Zoba, W7PEZ
 

I’m no expert but as I’ve played around with wire antennas, and reading ARRL publications, I believe any folded over length of wire is not counted. What matters is end to end reach of the conductor. The part wrapped around or folded back is not counted. 

I do agree with Dan, the performance difference either way will be insignificant.


On Jul 11, 2020, at 10:04 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:



I realize this might be a silly question and the significance to the overall wire length minimal but the question is burning a hole in my head: Do you count the part of the wire that is tied around the ceramic insulator when measuring wire length ?  I say “yes”

<08C416AD-97C7-4404-877F-0AA41B5874B1.jpeg>

--
*************************
Howard E. Mahran
WA1HEM
(425) 864 - 5104
*************************
1281 - 1300 of 6932