Re: Digest for hermes-lite@googlegroups.com - 4 updates in 1 topic

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Art Xbklyn

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Jan 21, 2026, 9:58:41 AMJan 21
to herme...@googlegroups.com
Try ferrite donuts on the power line, ethernet patch cable and PA output.

On Tue, Jan 20, 2026 at 10:34 PM <herme...@googlegroups.com> wrote:
Volker E. <volker....@googlemail.com>: Jan 19 09:48PM -0800

Hi,
 
i have the same issue specially on 40m.
When i lower the power for tuning, the problem most time is gone.
You can set the power for tuning settings in Thetis -> setup -> transmit ->
tune section
 
I have no idea why this happens....
 
73
Volker, DL1VE
 
 
KC3KOP schrieb am Samstag, 17. Januar 2026 um 20:01:39 UTC+1:
 
Volker E. <volker....@googlemail.com>: Jan 19 11:36PM -0800

I have an idea....
How much voltage do you use? Maybe low voltage can be the problem.
When i use my lifepo and the voltage drops to 12V i get often this problem.
I think with the power supply and 13.8V i never had this issue.
 
73
Volker, DL1VE
 
Volker E. schrieb am Dienstag, 20. Januar 2026 um 06:48:03 UTC+1:
 
KC3KOP <iaru...@gmail.com>: Jan 20 07:25PM -0800

Thank You for the Reply.
I have adjusted the Tuning Power, I have it backed down in hopes that this
issues does not ruin the board. I will work on trying a different power
supply. At this point I am losing faith that this will solve it. I spent
the weekend running my Flex at 100w off the same power supply. I measure
13.70VDC the plug. Center pin is positive. I have installed inline 3A fuses
between the power supply and the hermes.
 
Thank you for the help
73
Ian
On Tuesday, January 20, 2026 at 12:48:03 AM UTC-5 Volker E. wrote:
 
Mike Lewis <k7...@hotmail.com>: Jan 21 03:32AM

Did changing the latency setting improve anything?
 
From: herme...@googlegroups.com <herme...@googlegroups.com> On Behalf Of KC3KOP
Sent: Tuesday, January 20, 2026 7:25 PM
To: Hermes-Lite <herme...@googlegroups.com>
Subject: Re: New HL2 user transmit issue
 
 
Thank You for the Reply.
I have adjusted the Tuning Power, I have it backed down in hopes that this issues does not ruin the board. I will work on trying a different power supply. At this point I am losing faith that this will solve it. I spent the weekend running my Flex at 100w off the same power supply. I measure 13.70VDC the plug. Center pin is positive. I have installed inline 3A fuses between the power supply and the hermes.
 
Thank you for the help
73
Ian
On Tuesday, January 20, 2026 at 12:48:03 AM UTC-5 Volker E. wrote:
Hi,
 
i have the same issue specially on 40m.
When i lower the power for tuning, the problem most time is gone.
You can set the power for tuning settings in Thetis -> setup -> transmit -> tune section
 
I have no idea why this happens....
 
73
Volker, DL1VE
 
KC3KOP schrieb am Samstag, 17. Januar 2026 um 20:01:39 UTC+1:
 
Hello everyone,
 
My name is Ian - KC3KOP. I purchased the HL2 back in December 2025. I believe the T/R relay is buzzing horribly. This happens when I go into a dummy load or antenna. I have shut off the PA and tested for power at RF1. I currently do not have a meter to read that low accurately, but my meter on 5W range does have meter deflection when I put the HL2 in transmit. I have tried SDR console, SparkSDR and Thetis software so far with no success. I have tried the software on 3 different machines with different Ethernet cords. I plugged them in straight to the computer and a then into a network switch. With some basic network logging, the HL2 is using 44Mbps running 192k sample rate. I have pinged the HL2 and the following:
 
32bytes of data sent, time less than 1ms TTL=128
 
I will take it apart this weekend and take pictures of the board. I do have a microscope with a camera so I can take picture of an area if needed.
 
 
 
I followed the instructions in this link https://github.com/softerhardware/Hermes-Lite2/wiki/Hardware and did not find any problems.
 
 
 
This is my first time posting and I am following tests and instructions from these links
 
https://github.com/softerhardware/Hermes-Lite2/wiki/Repair
 
https://github.com/softerhardware/Hermes-Lite2/wiki/No-Transmit
 
 
 
YouTube links to my Hermes Lite transmit issue.
 
Thetis https://www.youtube.com/watch?v=6F5svpJnh8w
 
Spark SDR https://www.youtube.com/watch?v=uEtFsAXg_-E
 
Thank You for any help
 
73
 
Ian – KC3KOP
 
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