Date   

See UV-5R and others on a spectrum analyzer

Fred Dittrich
 


An extensive COVID-19 discussion with a CDC person

Fred Dittrich
 


Re: Resources mentioned regarding portable antennas

James Whitehill
 

Thanks to all presenters for their contributions to the portable antenna program on Tuesday.  Without  exception, each of you were  brief and compelling in showing the VHF and HF antennas you built or bought.  K0EMT's presentation was the longest and the last.  Bryan had forewarned me over last weekend by email about his extensive projects in QRP antennas and I gave permission for his extended demos and explanations.

Good work by all of you: K0PHP, WD6BGN, AE0FD, W0TES, and K0MET.

Jim, N0SSM


Re: CMRA Facebook Group

Big Jon
 

That is great John. Thank you.


73,

Jonathan Williams

President | ADØZE

mobile: (573)514-5773

email: ad0ze@...

      

This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Thursday, March 12, 2020 9:55 AM, John W. Smith <kc0hsb@...> wrote:

I've put a link in a bold heading to this at the bottom of the home page
at k0si.net. It says Connect with us on Facebook. If that needs to be
changed or moved, it can be done.

73,

John, KC0HSB

On 3/12/2020 8:48 AM, Big Jon via Groups.Io wrote:

Good Morning,
Please take the time to check out the CMRA Facebook page.
https://www.facebook.com/groups/CMRA1/
73,
Logo https://www.booneares.org/
Jonathan Williams
President | ADØZE
mobile: (573)514-5773
email:ad0ze@... mailto:ad0ze@...
Facebook icon https://www.facebook.com/jwilliams050 LinkedIn icon
https://www.linkedin.com/in/jwilliams050/ Twitter icon
https://twitter.com/BigJon_Williams
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error, please notify
the system manager. This message contains confidential information and
is intended only for the individual named. If you are not the named
addressee, you should not disseminate, distribute or copy this email.
Please notify the sender immediately by email if you have received
this email by mistake and delete this email from your system. If you
are not the intended recipient, you are notified that disclosing,
copying, distributing or taking any action in reliance on the contents
of this information is strictly prohibited.
--

This message came to you from
John Wesley Smith
kc0hsb@...
Find musings of an eclectic pilgrim at
https://johnwesleysmith.com/


Re: CMRA Facebook Group

John W. Smith
 

I've put a link in a bold heading to this at the bottom of the home page
at k0si.net. It says Connect with us on Facebook. If that needs to be
changed or moved, it can be done.


73,


John, KC0HSB




On 3/12/2020 8:48 AM, Big Jon via Groups.Io wrote:
Good Morning,

Please take the time to check out the CMRA Facebook page.

https://www.facebook.com/groups/CMRA1/

73,

Logo <https://www.booneares.org/>

Jonathan Williams
President | ADØZE
mobile: (573)514-5773
email:ad0ze@... <mailto:ad0ze@...>
Facebook icon <https://www.facebook.com/jwilliams050> LinkedIn icon
<https://www.linkedin.com/in/jwilliams050/> Twitter icon
<https://twitter.com/BigJon_Williams>

This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error, please notify
the system manager. This message contains confidential information and
is intended only for the individual named. If you are not the named
addressee, you should not disseminate, distribute or copy this email.
Please notify the sender immediately by email if you have received
this email by mistake and delete this email from your system. If you
are not the intended recipient, you are notified that disclosing,
copying, distributing or taking any action in reliance on the contents
of this information is strictly prohibited.





--
This message came to you from
John Wesley Smith
kc0hsb@...
Find musings of an eclectic pilgrim at
https://johnwesleysmith.com/


CMRA Facebook Group

Big Jon
 

Good Morning,

Please take the time to check out the CMRA Facebook page.


73,

Logo
Jonathan Williams
President | ADØZE
mobile: (573)514-5773
email: ad0ze@...
Facebook icon  LinkedIn icon  Twitter icon  
This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error, please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you should not disseminate, distribute or copy this email. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.





Re: What Hams Do Podcast

Scott Vince
 

https://podcasts.apple.com/us/podcast/on-the-air/id1494508201

New hams will find this interesting 
Scott


On Mar 11, 2020, at 11:20, Chris Swisher <Komu8ce@...> wrote:

This podcast is soon to be available on the Eastern Pennsylvania ARRL organization and has a interesting take on why the message recruiting new amateurs must change depending on the audience. https://epa-arrl.org/what-hams-do-podcast-episode-1/ 


What Hams Do Podcast

Chris Swisher
 

This podcast is soon to be available on the Eastern Pennsylvania ARRL organization and has a interesting take on why the message recruiting new amateurs must change depending on the audience. https://epa-arrl.org/what-hams-do-podcast-episode-1/ 


Re: Resources mentioned regarding portable antennas

Chris Swisher
 

While not as sexy as the other presentations, here is the cheap yagi design I presented to the group: https://www.wa5vjb.com/yagi-pdf/cheapyagi.pdf .

On Wed, Mar 11, 2020 at 10:04 AM Scott Vince <tigergas@...> wrote:
Bryan
What did you tell me to look up? Concerning hiking and radio?
Scott 
W9EQD 


On Mar 11, 2020, at 09:58, James Whitehill <jdwhitehill1603@...> wrote:


Bryan,

Thanks for the additional, useful information in this email.  But special thanks for the presentation last night, which excited a lot of interest.  I'm glad you went last, on the principle of saving the best for last!  Your presentation, which you have done before elsewhere, showed polish and efficiency.  Lots of ideas and experiment are embedded in your kit and I think will inspire others, including me, to develop our own kits and antennas.  Well done!

Jim, N0SSM

On Tue, Mar 10, 2020 at 10:46 PM Bryan Nehl <k0emt@...> wrote:
I mentioned a couple of resources at the meeting tonight.

Here are links to them.

“Random Wire Lengths”

https://udel.edu/~mm/ham/randomWire/

http://www.hamuniverse.com/randomwireantennalengths.html

Good lengths in ft: 29  35.5  41  58  71  84  107  119  148  203  347  407  423

Trapped End Fed Half Wave Antennas

http://peanutpower.co.uk/efhw

There are quite a few resources on the internet about trifilar winding a 9:1 transformer.

For the 9:1 and 49:1 transformers you can also wind a primary and secondary on the same core independently.

In the example below L1 (primary) has 3 turns and L2 at 9 turns.  Ratio is 1:3, square that 3 and it is a 9:1 transformer.  Could also easily wind a primary with 2 turns and secondary with 14 turns for EFHW (49:1). 
 
Wired up ~17’ radiator and 6’ counterpoise.  Kx3 had no trouble tuning it anywhere.  Typically I use a 58’ radiator with 9:1 or the trapped EFHW.

The article about portable masts can be found here: http://www.4sqrp.com/4sqrpNewsLetter/201908.pdf

72/73 de Bryan, k0emt

<IMG_2264.jpeg>


Re: Resources mentioned regarding portable antennas

Scott Vince
 

Bryan
What did you tell me to look up? Concerning hiking and radio?
Scott 
W9EQD 


On Mar 11, 2020, at 09:58, James Whitehill <jdwhitehill1603@...> wrote:


Bryan,

Thanks for the additional, useful information in this email.  But special thanks for the presentation last night, which excited a lot of interest.  I'm glad you went last, on the principle of saving the best for last!  Your presentation, which you have done before elsewhere, showed polish and efficiency.  Lots of ideas and experiment are embedded in your kit and I think will inspire others, including me, to develop our own kits and antennas.  Well done!

Jim, N0SSM

On Tue, Mar 10, 2020 at 10:46 PM Bryan Nehl <k0emt@...> wrote:
I mentioned a couple of resources at the meeting tonight.

Here are links to them.

“Random Wire Lengths”

https://udel.edu/~mm/ham/randomWire/

http://www.hamuniverse.com/randomwireantennalengths.html

Good lengths in ft: 29  35.5  41  58  71  84  107  119  148  203  347  407  423

Trapped End Fed Half Wave Antennas

http://peanutpower.co.uk/efhw

There are quite a few resources on the internet about trifilar winding a 9:1 transformer.

For the 9:1 and 49:1 transformers you can also wind a primary and secondary on the same core independently.

In the example below L1 (primary) has 3 turns and L2 at 9 turns.  Ratio is 1:3, square that 3 and it is a 9:1 transformer.  Could also easily wind a primary with 2 turns and secondary with 14 turns for EFHW (49:1). 
 
Wired up ~17’ radiator and 6’ counterpoise.  Kx3 had no trouble tuning it anywhere.  Typically I use a 58’ radiator with 9:1 or the trapped EFHW.

The article about portable masts can be found here: http://www.4sqrp.com/4sqrpNewsLetter/201908.pdf

72/73 de Bryan, k0emt

<IMG_2264.jpeg>


Re: Resources mentioned regarding portable antennas

James Whitehill
 

Bryan,

Thanks for the additional, useful information in this email.  But special thanks for the presentation last night, which excited a lot of interest.  I'm glad you went last, on the principle of saving the best for last!  Your presentation, which you have done before elsewhere, showed polish and efficiency.  Lots of ideas and experiment are embedded in your kit and I think will inspire others, including me, to develop our own kits and antennas.  Well done!

Jim, N0SSM

On Tue, Mar 10, 2020 at 10:46 PM Bryan Nehl <k0emt@...> wrote:
I mentioned a couple of resources at the meeting tonight.

Here are links to them.

“Random Wire Lengths”

https://udel.edu/~mm/ham/randomWire/

http://www.hamuniverse.com/randomwireantennalengths.html

Good lengths in ft: 29  35.5  41  58  71  84  107  119  148  203  347  407  423

Trapped End Fed Half Wave Antennas

http://peanutpower.co.uk/efhw

There are quite a few resources on the internet about trifilar winding a 9:1 transformer.

For the 9:1 and 49:1 transformers you can also wind a primary and secondary on the same core independently.

In the example below L1 (primary) has 3 turns and L2 at 9 turns.  Ratio is 1:3, square that 3 and it is a 9:1 transformer.  Could also easily wind a primary with 2 turns and secondary with 14 turns for EFHW (49:1). 
 
Wired up ~17’ radiator and 6’ counterpoise.  Kx3 had no trouble tuning it anywhere.  Typically I use a 58’ radiator with 9:1 or the trapped EFHW.

The article about portable masts can be found here: http://www.4sqrp.com/4sqrpNewsLetter/201908.pdf

72/73 de Bryan, k0emt



DMR net after Regular Wednesday net tonight

Bill McFarland - N0AXZ
 

Group,
At the CMRA meeting last night we agreed to run a DMR net directly after the regular Wednesday CMRA net during the month of March.

If you have a DMR radio you are invited to join the net on Local2, Slot 1. This will allow us to estimate local coverage for our DMR repeater.
73,
--
Bill N0AXZ


Re: Resources mentioned regarding portable antennas

Gary Vaught - W9TIG
 

Was unable to make the meeting, but am very grateful for the follow up!

-
Best Regards,
Gary D Vaught

We can engineer a solution to nearly any problem you can accurately define.

- somewhat anonymous



On Wed, Mar 11, 2020 at 7:20 AM Fred Dittrich <fdittric@...> wrote:
Bryan

Your presentation gave us a rich source of devices for go packs. Thanks for sharing.

73

Fred AE0FD



At 10:46 PM 3/10/2020, you wrote:
I mentioned a couple of resources at the meeting tonight.

Here are links to them.

“Random Wire Lengths�

https://udel.edu/~mm/ham/randomWire/

http://www.hamuniverse.com/randomwireantennalengths.html

Good lengths in ft: 29  35.5  41  58  71  84  107  119  148  203  347  407  423

Trapped End Fed Half Wave Antennas

http://peanutpower.co.uk/efhw

There are quite a few resources on the internet about trifilar winding a 9:1 transformer.

For the 9:1 and 49:1 transformers you can also wind a primary and secondary on the same core independently.

In the example below L1 (primary) has 3 turns and L2 at 9 turns.  Ratio is 1:3, square that 3 and it is a 9:1 transformer.  Could also easily wind a primary with 2 turns and secondary with 14 turns for EFHW (49:1).
 
Wired up ~17’ radiator and 6’ counterpoise.  Kx3 had no trouble tuning it anywhere.  Typically I use a 58’ radiator with 9:1 or the trapped EFHW.

The article about portable masts can be found here: http://www.4sqrp.com/4sqrpNewsLetter/201908.pdf

72/73 de Bryan, k0emt

[]


--
73
W9TIG

Gary Vaught


Re: Resources mentioned regarding portable antennas

Fred Dittrich
 

Bryan

Your presentation gave us a rich source of devices for go packs. Thanks for sharing.

73

Fred AE0FD



At 10:46 PM 3/10/2020, you wrote:

I mentioned a couple of resources at the meeting tonight.

Here are links to them.

“Random Wire Lengths�

https://udel.edu/~mm/ham/randomWire/

http://www.hamuniverse.com/randomwireantennalengths.html

Good lengths in ft: 29  35.5  41  58  71  84  107  119  148  203  347  407  423

Trapped End Fed Half Wave Antennas

http://peanutpower.co.uk/efhw

There are quite a few resources on the internet about trifilar winding a 9:1 transformer.

For the 9:1 and 49:1 transformers you can also wind a primary and secondary on the same core independently.

In the example below L1 (primary) has 3 turns and L2 at 9 turns.  Ratio is 1:3, square that 3 and it is a 9:1 transformer.  Could also easily wind a primary with 2 turns and secondary with 14 turns for EFHW (49:1).
 
Wired up ~17’ radiator and 6’ counterpoise.  Kx3 had no trouble tuning it anywhere.  Typically I use a 58’ radiator with 9:1 or the trapped EFHW.

The article about portable masts can be found here: http://www.4sqrp.com/4sqrpNewsLetter/201908.pdf

72/73 de Bryan, k0emt

[]


Resources mentioned regarding portable antennas

Bryan Nehl <k0emt@...>
 

I mentioned a couple of resources at the meeting tonight.

Here are links to them.

“Random Wire Lengths”

https://udel.edu/~mm/ham/randomWire/

http://www.hamuniverse.com/randomwireantennalengths.html

Good lengths in ft: 29  35.5  41  58  71  84  107  119  148  203  347  407  423

Trapped End Fed Half Wave Antennas

http://peanutpower.co.uk/efhw

There are quite a few resources on the internet about trifilar winding a 9:1 transformer.

For the 9:1 and 49:1 transformers you can also wind a primary and secondary on the same core independently.

In the example below L1 (primary) has 3 turns and L2 at 9 turns.  Ratio is 1:3, square that 3 and it is a 9:1 transformer.  Could also easily wind a primary with 2 turns and secondary with 14 turns for EFHW (49:1). 
 
Wired up ~17’ radiator and 6’ counterpoise.  Kx3 had no trouble tuning it anywhere.  Typically I use a 58’ radiator with 9:1 or the trapped EFHW.

The article about portable masts can be found here: http://www.4sqrp.com/4sqrpNewsLetter/201908.pdf

72/73 de Bryan, k0emt



HT antenna scans

Fred Dittrich
 

Hi

Attached please find 2m and 70cm scans of three different length ABBREE foldable female SMA antennas. In the file names I did not include the decimal part of the length.

73

Fred AE0FD


February CMRA Meeting Minutes

John W. Smith
 

Minutes for February's club meeting are available at https://k0si.net/cmra-meeting-minutes/ . Click on February under the heading for 2020 to view or download.


73,


John, KC0HSB




--
This message came to you from
John Wesley Smith
kc0hsb@...
Find musings of an eclectic pilgrim at
https://johnwesleysmith.com/


Re: Radio stuff available for free

Roy Parker
 

What is your email address?
De Roy - AA0B

On Tue, Mar 3, 2020, 10:41 AM Norman Lampton via Groups.Io <normanlampton=yahoo.com@groups.io> wrote:
I have had to go into an assisted living facility.  I have a lot of miscellaneous ham radio stuff in my house that I need to dispose of so the house can be sold.  None of it frankly is high quality but all of it is still useful.  I have my mobile tri-bander along with its antenna and power cable. I never had a base station of any value as my interest was always QRP.

If you will agree to get it out of the house you can have it for free.

Email me direct if this is of interest to you.

NORMAN LAMPTON JD
Attorney at Law
permanent retired

{KC0FNA  146.520}



Radio stuff available for free

Norman Lampton
 

I have had to go into an assisted living facility.  I have a lot of miscellaneous ham radio stuff in my house that I need to dispose of so the house can be sold.  None of it frankly is high quality but all of it is still useful.  I have my mobile tri-bander along with its antenna and power cable. I never had a base station of any value as my interest was always QRP.

If you will agree to get it out of the house you can have it for free.

Email me direct if this is of interest to you.

NORMAN LAMPTON JD
Attorney at Law
permanent retired

{KC0FNA  146.520}



Re: MO Severe Wx Awareness Week March 2-6

Bill McFarland - N0AXZ
 

John and all,
Stirling, our liaison with ECC, advised me last week that they would not be sounding the sirens on Tuesday, but rather activate their sirens as the normally will do monthly on the first Wednesday at 12:00 noon. (this Wednesday). 
Bill N0AXZ

On Mon, Mar 2, 2020 at 5:15 PM John Beatty <jebeatty@...> wrote:
This week is Severe Weather Awareness Week for Missouri (my sister-in-law reminded me).  Here is the link.

https://www.weather.gov/lsx/severeweek

The statewide tornado drill is scheduled for Tue, March 3rd, at 10:00am CST. 

John - NO0I

--
Bill

1201 - 1220 of 4919