Date   

Re: Reminder: Hot spot education series starts at 6:00 p.m. tonight, Saturday.

Paul Zoba
 

Where can I find the recording of the event?


On Sep 12, 2020, at 12:41 PM, Robin Amundson <wa7cpa@...> wrote:



Reminder: Hot Spot Education Series - Session #1:“What is a Hot Spot & why might I want one.”

When: Saturday, 12 September 2020, 6:00pm to 7:00pm, (GMT-07:00) America/Los Angeles

Where:https://us02web.zoom.us/meeting/register/tZwkd-qqqT8pHtJKj6_SMk90Ym61HOcxvcg8

View Event

Organizer: Jamie WA7JH wa7jh@... 3603624575

Description:

Good Evening,

 

I wanted to invite everyone to join a educational series surrounding hot spots with the first session this Saturday, September 12th, at 18:00 PST.

Michael Ricky, AF6FB, of California’s largest amateur radio club, the Papa System, and host of the DMR Round Table, will be presenting,

What is a Hot Spot & why might I want one.”

This session is being held on Zoom and will last about an hour.

 

The series schedule will be as follows:

September 12th, 18:00 PST  (1 Hour)– What is a Hot Spot, and why do I want or need one? Presenter: Michael Ricky AF6FB

September 19th, 18:00 PST (1-2 Hours) – What are my options for a Hot Spot(s)? Presenter: Rob Fanfant N7QT

 

To be announced: The following are tentative.

September 26th, 18:00 PST (1-3 Hours) – Now that I own one, how do I build and configure it? Presenter: Jamie Hughes WA7JH and Team

October 3rd, 18:00 (1-2 Hours) – What are some of the advanced features and how do I configure those? Presenter: Michael Ricky AF6FB and Team

 

We even have a prize from C4Labs of Tacoma Washington as a giveaway.

 

To join, register here:  https://us02web.zoom.us/meeting/register/tZwkd-qqqT8pHtJKj6_SMk90Ym61HOcxvcg8

 

Hope to see you there!

 

73,

 

Jamie Hughes

WA7JH

Founder

Email: wa7jh@...

Phone: (360) 362-4575

Puget Sound Digital Mobile Radio Coalition


Re: gmail Backup

Rowland
 

Still anxiously awaiting your call when you get a chance.


Thanks,

Rowland



On Sun, Sep 13, 2020 at 7:59 PM Lou Giliberto (KD7HCW) via groups.io <louis.giliberto=protonmail.com@groups.io> wrote:
Hey Rowland,

I'll give you a call tomorrow (Monday).  Didn't have time today, sorry.

-Lou


Sent with ProtonMail Secure Email.


Re: Tarheel

Howard E. Mahran / WA1HEM
 

I haven’t had any issues.

On Sep 14, 2020, at 5:35 PM, Rowland <rowland.brasch@...> wrote:


Do these affect the SWR on the antenna.


Thanks,

Rowland



On Sun, Sep 13, 2020 at 7:30 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

 

These are the brand I use. They are durable and have worked well for me. I use them on my the Tarheel base, plus on the various antennas I use with it..

 

https://www.amazon.com/gp/product/B000UTQUAK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

From: Rowland
Sent: Sunday, September 13, 2020 7:21 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] Tarheel

 

Please tell me about it.

 

On Sun, Sep 13, 2020 at 7:19 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

That’s Awesome Rowland!

 

Have you considered getting a quick release for the Tarheel so you can remove easity it to keep it safe, etc?

 

Nice work!

 

Howard

 

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Rowland
Sent: Sunday, September 13, 2020 6:30 PM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Tarheel

 

Look what I installed today.  My Tarheel II. Going to route the wires up to the radio  tomorrow that is under my front seat. I have the optional cooling fan so it will not get too warm under there.  Hopefully there is enough room.  Also using the Turbo Tuner auto that was designed just for the IC-7000 (my radio).

 

All this equipment has been in storage since I sold my last work van 4 years ago.  Looking forward to getting everything operational tomorrow.

 

I remember the van had some white noise when running (not alternator) and I was advised by George to install ground straps on the liftgate, hood, and exhaust system. Hopefully that noise won't be in this vehicle ('16 Ford Explorer) but we will see.

 

Thanks,

 

Rowland

 


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






--

Thanks,
Rowland

 


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


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


Re: Tarheel

Rowland
 

Do these affect the SWR on the antenna.


Thanks,

Rowland



On Sun, Sep 13, 2020 at 7:30 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

 

These are the brand I use. They are durable and have worked well for me. I use them on my the Tarheel base, plus on the various antennas I use with it..

 

https://www.amazon.com/gp/product/B000UTQUAK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

From: Rowland
Sent: Sunday, September 13, 2020 7:21 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] Tarheel

 

Please tell me about it.

 

On Sun, Sep 13, 2020 at 7:19 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

That’s Awesome Rowland!

 

Have you considered getting a quick release for the Tarheel so you can remove easity it to keep it safe, etc?

 

Nice work!

 

Howard

 

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Rowland
Sent: Sunday, September 13, 2020 6:30 PM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Tarheel

 

Look what I installed today.  My Tarheel II. Going to route the wires up to the radio  tomorrow that is under my front seat. I have the optional cooling fan so it will not get too warm under there.  Hopefully there is enough room.  Also using the Turbo Tuner auto that was designed just for the IC-7000 (my radio).

 

All this equipment has been in storage since I sold my last work van 4 years ago.  Looking forward to getting everything operational tomorrow.

 

I remember the van had some white noise when running (not alternator) and I was advised by George to install ground straps on the liftgate, hood, and exhaust system. Hopefully that noise won't be in this vehicle ('16 Ford Explorer) but we will see.

 

Thanks,

 

Rowland

 


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






--

Thanks,
Rowland

 


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


Re: you can fry a Nest thermostat - on the RFI hunt

Dan Pflugrath
 

 

Palomar Engineers is a good source of EMI/RFI countermeasures information and products.  In the case of your Nest Thermostat, all lines going into and out of that control will need to have a mix 31 countermeasures applied.  Mix 31 for 1-300 MHz (suitable for most HF amateur and commercial transmitters)  These can be torrid cores with the wiring making multiple turns through the core or snap on cores etc.  Depending on the frequency you may need mix 75  0.15 to 10 MHz.

 

Good luck, your are on the right track to reduce your noise problem.

 

73,

Dan KA7GPP

 

 

 

-----Original Message-----
From: snovarc@snovarc.groups.io [mailto:snovarc@snovarc.groups.io] On Behalf Of Shawn / K7ATA
Sent: Monday, September 14, 2020 11:09 AM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] you can fry a Nest thermostat - on the RFI hunt

 

First thing to do is put RFI filters on ALL of the control runs

connected to the nest; this SHOULD eliminate a lot of its radiated

noise, and will probably protect it some as well.

 

Common mode chokes with bypass capacitors would be my first step.

 

 

--Shawn

--K7ATA

 

On 9/14/2020 10:26 AM, Ryan - KJ7GIE wrote:

> Wanted to share this bit of info I've run across in my hunt for RFI in my house. Using an AM radio I noticed my Nest Thermostat was _very_ noisy. There is also no way to turn the thermostat off; it will simply drain the battery and then shut itself down which is the only way to actually get the thing to go off. But, I also identified, as I was hunting online, more than a few people have fried their Nest Thermostats on 40 meters. I guess running a long wire, from HVAC to thermostat, and then filling the thermostat with tiny fuses and FETs just doesn't play nice with amateur radio.

> So, I've got this source of RFI in my house I cannot turn off that is connected to a long wire that _may_ resonate / couple to 1 or more of the HF bands. How lucky can a guy get?

> Additionally... I _know_ the HVAC itself is noisy as it impacts my 70cm performance! Has anyone else gone to this extreme to fix it? http://www.arrl.org/files/file/Technology/Solving%20Furnace%20and%20AC_RFI_KM4LHZ_v9.pdf

> It's easy enough to turn the HVAC (blowers / condenser etc.) off while I'm operating. But the Nest is still active so I'm still on the hunt for ways to reduce / eliminate that issue (without replacing the unit as I really like my Nest thermostat). This is also pushing me towards the "wire on fence" outside HF antenna design and _not_ using a wire in the attic. My HVAC is in the attic so an attic based solution is looking less and less like a good use of my time.

>

 

 

 



____________________________________________________________

Top News - Sponsored By Newser


Re: you can fry a Nest thermostat - on the RFI hunt

Gerard Repko
 

Good info to know. I installed the ecobee thermostat, I’ll have to check how much RFI I get from it. I do have a switch on the side of the furnace in the garage that shuts it all down including the thermostat as it is powered from the original wiring to the furnace. Have a much larger HVAC system in the new house that I’ll have to check. The room off the garage that I’ve designated for my shack is pretty far from the HVAC, but I’ll be looking for all rfi once there.

On Sep 14, 2020, at 10:26 AM, Ryan - KJ7GIE <@KJ7GIE> wrote:

Wanted to share this bit of info I've run across in my hunt for RFI in my house. Using an AM radio I noticed my Nest Thermostat was _very_ noisy. There is also no way to turn the thermostat off; it will simply drain the battery and then shut itself down which is the only way to actually get the thing to go off. But, I also identified, as I was hunting online, more than a few people have fried their Nest Thermostats on 40 meters. I guess running a long wire, from HVAC to thermostat, and then filling the thermostat with tiny fuses and FETs just doesn't play nice with amateur radio.

So, I've got this source of RFI in my house I cannot turn off that is connected to a long wire that _may_ resonate / couple to 1 or more of the HF bands. How lucky can a guy get?

Additionally... I _know_ the HVAC itself is noisy as it impacts my 70cm performance! Has anyone else gone to this extreme to fix it? http://www.arrl.org/files/file/Technology/Solving%20Furnace%20and%20AC_RFI_KM4LHZ_v9.pdf

It's easy enough to turn the HVAC (blowers / condenser etc.) off while I'm operating. But the Nest is still active so I'm still on the hunt for ways to reduce / eliminate that issue (without replacing the unit as I really like my Nest thermostat). This is also pushing me towards the "wire on fence" outside HF antenna design and _not_ using a wire in the attic. My HVAC is in the attic so an attic based solution is looking less and less like a good use of my time.




Re: you can fry a Nest thermostat - on the RFI hunt

Shawn / K7ATA
 

First thing to do is put RFI filters on ALL of the control runs connected to the nest; this SHOULD eliminate a lot of its radiated noise, and will probably protect it some as well.

Common mode chokes with bypass capacitors would be my first step.


--Shawn
--K7ATA

On 9/14/2020 10:26 AM, Ryan - KJ7GIE wrote:
Wanted to share this bit of info I've run across in my hunt for RFI in my house. Using an AM radio I noticed my Nest Thermostat was _very_ noisy. There is also no way to turn the thermostat off; it will simply drain the battery and then shut itself down which is the only way to actually get the thing to go off. But, I also identified, as I was hunting online, more than a few people have fried their Nest Thermostats on 40 meters. I guess running a long wire, from HVAC to thermostat, and then filling the thermostat with tiny fuses and FETs just doesn't play nice with amateur radio.

So, I've got this source of RFI in my house I cannot turn off that is connected to a long wire that _may_ resonate / couple to 1 or more of the HF bands. How lucky can a guy get?

Additionally... I _know_ the HVAC itself is noisy as it impacts my 70cm performance! Has anyone else gone to this extreme to fix it? http://www.arrl.org/files/file/Technology/Solving%20Furnace%20and%20AC_RFI_KM4LHZ_v9.pdf

It's easy enough to turn the HVAC (blowers / condenser etc.) off while I'm operating. But the Nest is still active so I'm still on the hunt for ways to reduce / eliminate that issue (without replacing the unit as I really like my Nest thermostat). This is also pushing me towards the "wire on fence" outside HF antenna design and _not_ using a wire in the attic. My HVAC is in the attic so an attic based solution is looking less and less like a good use of my time.




you can fry a Nest thermostat - on the RFI hunt

Ryan - KJ7GIE
 

Wanted to share this bit of info I've run across in my hunt for RFI in my house. Using an AM radio I noticed my Nest Thermostat was _very_ noisy. There is also no way to turn the thermostat off; it will simply drain the battery and then shut itself down which is the only way to actually get the thing to go off. But, I also identified, as I was hunting online, more than a few people have fried their Nest Thermostats on 40 meters. I guess running a long wire, from HVAC to thermostat, and then filling the thermostat with tiny fuses and FETs just doesn't play nice with amateur radio.

So, I've got this source of RFI in my house I cannot turn off that is connected to a long wire that _may_ resonate / couple to 1 or more of the HF bands. How lucky can a guy get?

Additionally... I _know_ the HVAC itself is noisy as it impacts my 70cm performance! Has anyone else gone to this extreme to fix it? http://www.arrl.org/files/file/Technology/Solving%20Furnace%20and%20AC_RFI_KM4LHZ_v9.pdf

It's easy enough to turn the HVAC (blowers / condenser etc.) off while I'm operating. But the Nest is still active so I'm still on the hunt for ways to reduce / eliminate that issue (without replacing the unit as I really like my Nest thermostat). This is also pushing me towards the "wire on fence" outside HF antenna design and _not_ using a wire in the attic. My HVAC is in the attic so an attic based solution is looking less and less like a good use of my time.


Re: gmail Backup

Rowland
 

After 10 please.

On Sun, Sep 13, 2020 at 7:59 PM Lou Giliberto (KD7HCW) via groups.io <louis.giliberto=protonmail.com@groups.io> wrote:
Hey Rowland,

I'll give you a call tomorrow (Monday).  Didn't have time today, sorry.

-Lou


Sent with ProtonMail Secure Email.





--
Thanks,
Rowland


Re: gmail Backup

Lou Giliberto (KD7HCW)
 

Hey Rowland,

I'll give you a call tomorrow (Monday).  Didn't have time today, sorry.

-Lou


Sent with ProtonMail Secure Email.


Re: Tarheel

Howard E. Mahran / WA1HEM
 

 

These are the brand I use. They are durable and have worked well for me. I use them on my the Tarheel base, plus on the various antennas I use with it..

 

https://www.amazon.com/gp/product/B000UTQUAK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1

From: Rowland
Sent: Sunday, September 13, 2020 7:21 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] Tarheel

 

Please tell me about it.

 

On Sun, Sep 13, 2020 at 7:19 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

That’s Awesome Rowland!

 

Have you considered getting a quick release for the Tarheel so you can remove easity it to keep it safe, etc?

 

Nice work!

 

Howard

 

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Rowland
Sent: Sunday, September 13, 2020 6:30 PM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Tarheel

 

Look what I installed today.  My Tarheel II. Going to route the wires up to the radio  tomorrow that is under my front seat. I have the optional cooling fan so it will not get too warm under there.  Hopefully there is enough room.  Also using the Turbo Tuner auto that was designed just for the IC-7000 (my radio).

 

All this equipment has been in storage since I sold my last work van 4 years ago.  Looking forward to getting everything operational tomorrow.

 

I remember the van had some white noise when running (not alternator) and I was advised by George to install ground straps on the liftgate, hood, and exhaust system. Hopefully that noise won't be in this vehicle ('16 Ford Explorer) but we will see.

 

Thanks,

 

Rowland

 


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






--

Thanks,
Rowland

 


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


Re: Tarheel

Rowland
 

Please tell me about it.

On Sun, Sep 13, 2020 at 7:19 PM Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

That’s Awesome Rowland!

 

Have you considered getting a quick release for the Tarheel so you can remove easity it to keep it safe, etc?

 

Nice work!

 

Howard

 

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Rowland
Sent: Sunday, September 13, 2020 6:30 PM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Tarheel

 

Look what I installed today.  My Tarheel II. Going to route the wires up to the radio  tomorrow that is under my front seat. I have the optional cooling fan so it will not get too warm under there.  Hopefully there is enough room.  Also using the Turbo Tuner auto that was designed just for the IC-7000 (my radio).

 

All this equipment has been in storage since I sold my last work van 4 years ago.  Looking forward to getting everything operational tomorrow.

 

I remember the van had some white noise when running (not alternator) and I was advised by George to install ground straps on the liftgate, hood, and exhaust system. Hopefully that noise won't be in this vehicle ('16 Ford Explorer) but we will see.

 

Thanks,

 

Rowland

 


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







--
Thanks,
Rowland


Re: Tarheel

Howard E. Mahran / WA1HEM
 

That’s Awesome Rowland!

 

Have you considered getting a quick release for the Tarheel so you can remove easity it to keep it safe, etc?

 

Nice work!

 

Howard

 

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Rowland
Sent: Sunday, September 13, 2020 6:30 PM
To: snovarc@snovarc.groups.io
Subject: [SnoVARC] Tarheel

 

Look what I installed today.  My Tarheel II. Going to route the wires up to the radio  tomorrow that is under my front seat. I have the optional cooling fan so it will not get too warm under there.  Hopefully there is enough room.  Also using the Turbo Tuner auto that was designed just for the IC-7000 (my radio).

 

All this equipment has been in storage since I sold my last work van 4 years ago.  Looking forward to getting everything operational tomorrow.

 

I remember the van had some white noise when running (not alternator) and I was advised by George to install ground straps on the liftgate, hood, and exhaust system. Hopefully that noise won't be in this vehicle ('16 Ford Explorer) but we will see.

 

Thanks,

 

Rowland

 


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


Tarheel

Rowland
 

Look what I installed today.  My Tarheel II. Going to route the wires up to the radio  tomorrow that is under my front seat. I have the optional cooling fan so it will not get too warm under there.  Hopefully there is enough room.  Also using the Turbo Tuner auto that was designed just for the IC-7000 (my radio).

All this equipment has been in storage since I sold my last work van 4 years ago.  Looking forward to getting everything operational tomorrow.

I remember the van had some white noise when running (not alternator) and I was advised by George to install ground straps on the liftgate, hood, and exhaust system. Hopefully that noise won't be in this vehicle ('16 Ford Explorer) but we will see.

image.jpeg

Thanks,

Rowland


Re: W7PFB-10 Winlink RMS changes

Paul Butzi (W7PFB)
 

Yes.

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

On Sep 13, 2020, at 3:51 PM, Paul Zoba <pezoba@...> wrote:

Paul, are you referring to the internal sound card in the 9700?


On Sep 13, 2020, at 3:45 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:

Yeah, there’s something going wrong with the wide mode.  I suspect that it gets huge error rates in wide mode, which cuts the thruput way back.

Doing some research it seems the bandwidth of the internal soundcard is limited to 2.5khz, not enough for wide mode.  So I expect that’s what is going on.

Even worse, apparently the 6 pin mini-din connector does not give you the access points in the audio chain that you need to do wide mode either.  So you can’t even use an external sound card to do it.  (although I think some experimenting is in order to verify that).


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

On Sep 13, 2020, at 3:40 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

Just attempted 2 tests using 2 separate larger file types:

1) Image attached to an email
2) Large Text Email 

The first email with the image file attached was rejected in both Narrow and Wide mode. Maybe it was too big to send or the RMS station has a maximum file size that I exceeded
The second email test was with a multipage text-based email.

Results are even more dramatic versus the first tests that you and I ran. Narrow was over FIVE times as  fast as Wide:

NARROW:
*** Completed send of message KUZD9IEXAAX3
*** Sent 1 message.  Bytes: 8357,  Time: 00:19,  bytes/minute: 26286
   FQ
*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:26:03
*** Session: 0.6 min;  Avg Throughput: 14998 Bytes/min;   1 Min Peak Throughput: 14998 Bytes/min

 

WIDE MODE:
*** Completed send of message PIIWPT10E4ES
*** Sent 1 message.  Bytes: 8343,  Time: 01:30,  bytes/minute: 5503
   FQ
*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:31:45
*** Session: 1.7 min;  Avg Throughput: 4814 Bytes/min;   1 Min Peak Throughput: 4814 Bytes/min



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



Re: W7PFB-10 Winlink RMS changes

Howard E. Mahran / WA1HEM
 

Interesting. So even with the DRA-50 as an external card connected to the IC9700 wont work….oh well.. I’ve heard rumors that with an external card the Yeasu FT991a should be able to handle WIDE mode…

 

The Narrow mode is pretty fast for most applications.

 

From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Paul Butzi (W7PFB)
Sent: Sunday, September 13, 2020 3:45 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] W7PFB-10 Winlink RMS changes

 

Yeah, there’s something going wrong with the wide mode.  I suspect that it gets huge error rates in wide mode, which cuts the thruput way back.

 

Doing some research it seems the bandwidth of the internal soundcard is limited to 2.5khz, not enough for wide mode.  So I expect that’s what is going on.

 

Even worse, apparently the 6 pin mini-din connector does not give you the access points in the audio chain that you need to do wide mode either.  So you can’t even use an external sound card to do it.  (although I think some experimenting is in order to verify that).

 

 

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



On Sep 13, 2020, at 3:40 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

 

Just attempted 2 tests using 2 separate larger file types:

1) Image attached to an email
2) Large Text Email 

The first email with the image file attached was rejected in both Narrow and Wide mode. Maybe it was too big to send or the RMS station has a maximum file size that I exceeded
The second email test was with a multipage text-based email.

Results are even more dramatic versus the first tests that you and I ran. Narrow was over FIVE times as  fast as Wide:

NARROW:

*** Completed send of message KUZD9IEXAAX3

*** Sent 1 message.  Bytes: 8357,  Time: 00:19,  bytes/minute: 26286

   FQ

*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:26:03

*** Session: 0.6 min;  Avg Throughput: 14998 Bytes/min;   1 Min Peak Throughput: 14998 Bytes/min

 

WIDE MODE:

*** Completed send of message PIIWPT10E4ES

*** Sent 1 message.  Bytes: 8343,  Time: 01:30,  bytes/minute: 5503

   FQ

*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:31:45

*** Session: 1.7 min;  Avg Throughput: 4814 Bytes/min;   1 Min Peak Throughput: 4814 Bytes/min




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

 


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


Re: W7PFB-10 Winlink RMS changes

Paul Zoba
 

Paul, are you referring to the internal sound card in the 9700?


On Sep 13, 2020, at 3:45 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:

Yeah, there’s something going wrong with the wide mode.  I suspect that it gets huge error rates in wide mode, which cuts the thruput way back.

Doing some research it seems the bandwidth of the internal soundcard is limited to 2.5khz, not enough for wide mode.  So I expect that’s what is going on.

Even worse, apparently the 6 pin mini-din connector does not give you the access points in the audio chain that you need to do wide mode either.  So you can’t even use an external sound card to do it.  (although I think some experimenting is in order to verify that).


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

On Sep 13, 2020, at 3:40 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

Just attempted 2 tests using 2 separate larger file types:

1) Image attached to an email
2) Large Text Email 

The first email with the image file attached was rejected in both Narrow and Wide mode. Maybe it was too big to send or the RMS station has a maximum file size that I exceeded
The second email test was with a multipage text-based email.

Results are even more dramatic versus the first tests that you and I ran. Narrow was over FIVE times as  fast as Wide:

NARROW:
*** Completed send of message KUZD9IEXAAX3
*** Sent 1 message.  Bytes: 8357,  Time: 00:19,  bytes/minute: 26286
   FQ
*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:26:03
*** Session: 0.6 min;  Avg Throughput: 14998 Bytes/min;   1 Min Peak Throughput: 14998 Bytes/min

 

WIDE MODE:
*** Completed send of message PIIWPT10E4ES
*** Sent 1 message.  Bytes: 8343,  Time: 01:30,  bytes/minute: 5503
   FQ
*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:31:45
*** Session: 1.7 min;  Avg Throughput: 4814 Bytes/min;   1 Min Peak Throughput: 4814 Bytes/min



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


Re: W7PFB-10 Winlink RMS changes

Paul Butzi (W7PFB)
 

Yeah, there’s something going wrong with the wide mode.  I suspect that it gets huge error rates in wide mode, which cuts the thruput way back.

Doing some research it seems the bandwidth of the internal soundcard is limited to 2.5khz, not enough for wide mode.  So I expect that’s what is going on.

Even worse, apparently the 6 pin mini-din connector does not give you the access points in the audio chain that you need to do wide mode either.  So you can’t even use an external sound card to do it.  (although I think some experimenting is in order to verify that).


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

On Sep 13, 2020, at 3:40 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

Just attempted 2 tests using 2 separate larger file types:

1) Image attached to an email
2) Large Text Email 

The first email with the image file attached was rejected in both Narrow and Wide mode. Maybe it was too big to send or the RMS station has a maximum file size that I exceeded
The second email test was with a multipage text-based email.

Results are even more dramatic versus the first tests that you and I ran. Narrow was over FIVE times as  fast as Wide:

NARROW:
*** Completed send of message KUZD9IEXAAX3
*** Sent 1 message.  Bytes: 8357,  Time: 00:19,  bytes/minute: 26286
   FQ
*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:26:03
*** Session: 0.6 min;  Avg Throughput: 14998 Bytes/min;   1 Min Peak Throughput: 14998 Bytes/min

 

WIDE MODE:
*** Completed send of message PIIWPT10E4ES
*** Sent 1 message.  Bytes: 8343,  Time: 01:30,  bytes/minute: 5503
   FQ
*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:31:45
*** Session: 1.7 min;  Avg Throughput: 4814 Bytes/min;   1 Min Peak Throughput: 4814 Bytes/min



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


Re: W7PFB-10 Winlink RMS changes

Howard E. Mahran / WA1HEM
 

Just attempted 2 tests using 2 separate larger file types:

1) Image attached to an email
2) Large Text Email 

The first email with the image file attached was rejected in both Narrow and Wide mode. Maybe it was too big to send or the RMS station has a maximum file size that I exceeded
The second email test was with a multipage text-based email.

Results are even more dramatic versus the first tests that you and I ran. Narrow was over FIVE times as  fast as Wide:

NARROW:

*** Completed send of message KUZD9IEXAAX3

*** Sent 1 message.  Bytes: 8357,  Time: 00:19,  bytes/minute: 26286

   FQ

*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:26:03

*** Session: 0.6 min;  Avg Throughput: 14998 Bytes/min;   1 Min Peak Throughput: 14998 Bytes/min

 

WIDE MODE:

*** Completed send of message PIIWPT10E4ES

*** Sent 1 message.  Bytes: 8343,  Time: 01:30,  bytes/minute: 5503

   FQ

*** Disconnected from Winlink RMS: W7PFB-10 @ 2020/09/13 22:31:45

*** Session: 1.7 min;  Avg Throughput: 4814 Bytes/min;   1 Min Peak Throughput: 4814 Bytes/min




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


Re: W7PFB-10 Winlink RMS changes

Howard E. Mahran / WA1HEM
 

This is the same speed differential that I got. Your overhead idea is interesting. I'll try experimenting with a much larger file and post the speed results here.

P.S. ...Yes - my first test email was the Gettysburg Address 😊

-----Original Message-----
From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Paul Butzi (W7PFB)
Sent: Sunday, September 13, 2020 2:35 PM
To: snovarc@snovarc.groups.io
Subject: Re: [SnoVARC] W7PFB-10 Winlink RMS changes

Correction: wide mode 7 seconds narrow mode 15 seconds. Sheesh. Must. Get. More. Coffee.

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

On Sep 13, 2020, at 2:33 PM, Paul Butzi (W7PFB) <w7pfb@...> wrote:

Ok, so this is very interesting. I got the email which I think you sent as a test. Gettysburg Address?

I just did a little experiment, sending from one laptop thru a DRA-36 and a Kenwood TM-D710G, sending an email that contains a 10k byte word english word list. (winlink compresses email, I wanted some representative text and this was a handy way to get it about 10kilobytes of text.

Sending with VARA set to wide mode, it transferred the email in 7 seconds. In VARA wide mode, it transferred an identical email in 15 seconds. Call it a factor of two difference in speed.

The problem here is that the overhead is large relative to the time needed to transfer the email. Improving the transport speed does not do much to cut overall time unless the overhead is small relative to the data transfer time.

Anyway it would be interesting if you could repeat the experiment with a longer text and see what you get.

There’s a lot to learn about VARA and how the wide/narrow thing works.

And probably also about the 9700 built in sound card.

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

On Sep 12, 2020, at 5:33 PM, Howard E. Mahran / WA1HEM <wa1hem@...> wrote:

Ok I just tested both FM Narrow and Wide using just my IC9700 (no external sound card)

The NARROW setting was twice as fast and the WIDE. See attached images. So my guess is that Im not really sending wide even though VARA FM is set to WIDE... maybe some type of stepping down when connected causing a slower transmission. Im not sure... regardless... even in NARROW mode, the speed was awesomely fast (Compared to Vara on HF)




-----Original Message-----
From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Howard E. Mahran / WA1HEM
Sent: Saturday, September 12, 2020 4:57 PM
To: snovarc@snovarc.groups.io; 'Lynn Burlingame' <n7cfo@...>
Subject: Re: [SnoVARC] W7PFB-10 Winlink RMS changes

Cool. Sounds like you were busy. I will give this a try later.

Question - is there a way to disable the Narrow VARA FM to "temporarily" test FM WIDE only?

-----Original Message-----
From: snovarc@snovarc.groups.io <snovarc@snovarc.groups.io> On Behalf Of Paul Butzi (W7PFB)
Sent: Saturday, September 12, 2020 4:23 PM
To: snovarc@snovarc.groups.io; Lynn Burlingame <n7cfo@...>
Subject: [SnoVARC] W7PFB-10 Winlink RMS changes

If you’re not using my Winlink RMS stations W7PFB-10, you can ignore this email.

If you’re using W7PFB-10 to connect to Winlink, but are not interested in the details, all you need to know is that I’ve made a bunch of changes, so if you run into trouble or have other feedback, please let me know.

If you’re interested in the nitty gritty, read on:

The station used to be:
Kenwood TM-D710G dualband radio
Windows Laptop running the RMS software configured to use the TNC built in to the Kenwood radio to do 1200 baud packet VARA FM software using a Masters Communications DRA-50 sound card connected to the data port on the Kenwood to do VARA FM WIDE.

The station is now:
Alinco DR-135T 2m radio
The same Windows laptop using the RMS software Masters Communications DRA-50 soundcard connected to the data port of the DR-135T Soundmodem software using the DRA-50 to do 1200 baud packet VARA FM software using the DRA-50 to do VARA FM WIDE

Please send any questions or comments you might have!

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







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





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



<Vara FM Narrow.PNG><Vara FM Wide.PNG>








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