Thetis fm

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WM4L Justin williams

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Oct 22, 2024, 11:11:40 AM10/22/24
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I am trying to use the Hermes and Thetis with a transverter for a 2m repeater. All works fine in that I hit the repeater and I hear and am heard. I was told I had low audio and sounded like I was narrow band, but I have the 5k deviation box checked. Switching on the pre-emphasis brought the audio up but still had low audio. Has anyone used fm with success? I see a few other posts around where someone had the same issue but no resolutions. Thanks 

Kurt V.

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Oct 25, 2024, 11:00:48 PM10/25/24
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Setup/DSP/options
Buffer size FM =>256 & TX => 64
Filter size FM => '4096 & TX=> 1024
Filter type FM RX => low latency TX=> Linear Phase

Go to FM tab
Enable Limiter ONOFF
Limiter gain 30db

Enable FM transmitter pre emphase ...
AF cut: 1 to 8000

try these settings

WM4L Justin williams

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Oct 29, 2024, 4:58:58 PM10/29/24
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Thanks Kurt, I just saw your reply and will test out the settings later on. Any tips on the dsp setup for ssb? im just using default now. Thanks again.
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