search

F1ATB / Remote-SDR

Remote control of 2 Software Design Radio. Receiver and transmitter. Based on Adalm-Pluto SDR or RTL-SDR or Hack RF SDR or SDRplay and signal processing using GNU Radio on Raspberry PI. GUI on a web browser.
https://f1atb.fr
GNU General Public License v3.0
140 stars 23 forks source link

Disable TX Lo #31

Open Sergey-R5AU opened 1 year ago

Sergey-R5AU commented 1 year ago

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

F1ATB commented 1 year ago

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

Sergey-R5AU commented 1 year ago

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