Search found 2 matches

by spirewalk
Thu Jul 27, 2017 1:19 pm
Forum: Other SDR Devices
Topic: Linear Amp for Raspberry Pi 2 GPIO transmitter?
Replies: 4
Views: 5482

Re: Linear Amp for Raspberry Pi 2 GPIO transmitter?

I am a licensed ham operator. I used this 20M TX shield (https://tapr.org/kits_20M-wspr-pi.html) to filter the harmonics. It is designed for WSPR, but also has capability for CW and SSB 20M.

Okay, so I need a pre-amp. What brand or product do you recommend?
by spirewalk
Sat Apr 29, 2017 7:54 pm
Forum: Other SDR Devices
Topic: Linear Amp for Raspberry Pi 2 GPIO transmitter?
Replies: 4
Views: 5482

Linear Amp for Raspberry Pi 2 GPIO transmitter?

I want to increase the transmission output to 10-20 watts, what sort of linear amp do I need, and what would be a suitable low pass filter?