Nowadays, SDR is the mainstream.
But I like analog systems. Since I first started amateur radio 50 years ago, I've always wanted "Collins". Recently, the "Collins Filter" has finally been discontinued.
Covid-19 occurred two years ago, and from last year, "Stay home" began to be shouted. This allows you to spend a lot of time on homebrew. On this occasion, I decided to make a transceiver using the "Collins filter" that I had longed for for many years.
For VFO, I used the touch panel type VFO controller that I posted on my blog before.
It was finally completed two years after it started. But the pandemic has not yet converged.
Specifications
ReceiverCircuit Type SSB/CW/FM/AM: Double conversion Super heterodyne
Sensitivity SSB:2.4kHz CW:500Hz FM:12kHz AM:6kHz
Frequency range Ham band (1.9,3.5,7,10.14,18,21,24,28,50)
General (0-60MHz Receive only)
Audio Output 2W into 8 Ohms







