From: Дюльдин Георгий

Sent: Friday, September 20, 2024 11:35 AM

To: [email protected]

Subject: [xiegu-x6100] Patched BASE firmware with changed TX audio filter low cutoff frequency #firmware

Hi.
Original BASE firmware applies bandpass filter to input signal. Cutoff frequencies is 300 Hz and 3000 Hz. I checked with different modulations (AM, FM, SSB, SSB digital) by passing a noise signal as an input.
For my point of view 300 Hz is too high. I patched firmware and changed this frequency to 160 Hz.
Also, I recorded some samples using my SDR, original X6100 microphone, using SSB modulation. I tried to reproduce same conditions for each of records, but for the recording with 160 Hz filter I forgot to turn off my analog compressor.

I prepared 2 patched versions: for 1.1.6 BASE (2022) and for 1.1.7 BASE (latest, 2024)
Audio samples and patched firmware available at

Disclaimer: I tested it on my transceiver, but can't guarantee, that it will work on your device.

Installing procedure:
1. Connect transceiver to WiFi
2. Connect to transceiver with WinSCP (or FileZilla)
3. Copy one (or both) of the xgf files from link above to the /usr/firmware.
4. Open System settings -> Firmware upgrade on transceiver, choose uploaded file and update.
5. Check system info - BASE version should contain "160Hz"

Steps 1 and 2 are the same as for opening TX ()

73! Georgy // R2RFE