WSPR beacon with Raspberry Pi 3B+

2021-05-07-raspios-buster-armhf.zip
OS was used on Raspberry Pi 3B+.
Using code from WsprryPi, Raspberry Pi 3B+ was made into a WSPR beacon.
20M WSPR with 100 mW was tried.

A tuned amplifier was used to get 100mW on 50R.
Three tuned circuits in the input removed harmonic energy.
Here is the circuit..

Circuit was made using ugly construction on a thin solderable GI sheet.
Here is the picture of the 20M WSPR board.


A number of transmissions were made with this command...
pi@pi3:~ $ sudo   wspr   --repeat   VU2NIL   NL32   20   20m

Got a few spots from wsprnet
Timestamp           Reporter
2021-07-14 12:24 BD7MQB
2021-07-14 12:24 BA7IB-3
2021-07-14 12:24 BG7IBS
2021-07-14 13:34 VU2PTT

73!

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