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Disable TX Lo

Open Sergey-R5AU opened this issue 2 years ago • 2 comments

Hi André ! Thank you for nice programming! Works fine CW, DIGI and SSB QSOs i did via QO-100 Could you modify your code with disabling TX LO of AD93XX within simplex mode ? Othervise TX LO disturbing normal reception and plenty of carriers are visible especially on high frequencies , see attached pic Thank you in advance ! screenshot1

Sergey-R5AU avatar Feb 27 '23 16:02 Sergey-R5AU

I have to investigate the feasibility as it takes time to set the parameters of the transmitter when you want to transmit. For the moment, I put the transmit gain to the minimum. It's why I don't understand why you have all these lines.

73 André

F1ATB avatar Feb 27 '23 17:02 F1ATB

Andre thank you for quick reply ! Well , as i mentioned that started visible with frequency above 500-600 mhz, were on 2m or 70cm practically this is not disturbing too much. However i learned a 2 wayaround: 1 - disable TX LO during reception - simple simplex mode 2 - move TX frequency out of RX range (ex.: 1mhz or more below or up - aka "inverted SPLIT mode")

P.S. I am using Pluto and RPI4

Sergey-R5AU avatar Feb 27 '23 17:02 Sergey-R5AU