No RF Modulation on Hermes Lite 2 with SparkSDR (Linux) – HW LED Off, Audio Present

[roger jaffard]

Issue: With Hermes Lite 2 and SparkSDR on Linux (Ubuntu 24.04), TX activates (relay click, TX light), but there’s no RF modulation despite mic input showing in software. HL2 is detected on the network, but HW LED stays off. Suspect either gateware isn’t fully loading or audio isn’t reaching the TX IQ path.  

[Steve Haynal]

Please see the no tx power output wiki page:

https://github.com/softerhardware/Hermes-Lite2/wiki/No-Transmit

In particular, use a CW key (or just two wires shorted) to test TX and eliminate the host to HL2 TX IQ chain.

73,

Steve

kf7o