Re: FT8 with GNU radio and the PlutoSDR on the 2 meters band

[Adrian Musceac]

Hi Marcus,

I'm not a hardware guy, but I think it's a circuit that monitors voltage from the final amplification stage and adjusts gain of previous stages if the maximum level is exceeded. Present in all classic SSB transceivers. Perhaps somebody else can explain better.

Adrian

On January 13, 2020 5:09:12 PM UTC, "Müller, Marcus (CEL)" <address@hidden> wrote:

Hey Adrian, that's nice!

Generally: you said you couldn't implement an ALC: what's an ALC?

Best regards,
Marcus

Mon, 2020-01-13 at 16:40 +0000, Adrian Musceac wrote:
Hi,

I wrote a report about combining WSJTX and GNU radio with a PlutoSDR transceiver to achieve FT8 contacts on the 144 MHz amateur radio band. The short summary is that I achieved contacts at over 800 km and heard stations as far as 1000 km last month in excellent tropo propagation conditions with 20 Watts of output power. 
I thought you might be interested in reading this, but it's too long to paste here.

The report can be read here:
http://qradiolink.org/ft8-plutosdr-2meters.html

Adrian YO8RZZ