ALL BAND TRANSCEIVER（１）

 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

Receiver
Circuit Type                    SSB/CW/FM/AM: Double conversion  Super heterodyne
Sensitivity                      SSB:2.4kHz CW:500Hz FM:12kHz AM:6kHz

Intermediate frequency  1st:70.455MHz,2nd:455kHz
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

Transmitter

Modulation types            SSB(J3E),FM(F3E),CW

Power Output                5-8W

FM Deviation                 ±5kHz

Microphone Impedance  600 Ohms

Others

Power Consumption       Rx 1.0A    Tx 3.7A  (Maximum)

Supply Voltage              13.8V

Dimensions                   W:430mm  H:100mm  D:450mm

VFO                             Si5351 PLL

Controller                    Arduino Due

LCD                            3.2inch TFT with Touch Panel

Internal View

Block diagram

Video(YouTube)    https://youtu.be/toFvZ_4qtKs

I will upload the commentary to the blog little by little in the future.

DE JA2NKD