Wednesday, December 16, 2020

Sommerkamp TS-780DX touched up!

 Together with my radio friends Theo PA0KN and Edwin PA2LVD we saved a TS-780DX from scratch.

The Sommerkamp arrived from Belgium some weeks ago and had a few 🙃 flaws:

No audio on receive

No receive at all

No SSB transmit

Fault at 7 segment LED

Oscillating of PA after pressing ptt

Some knobs not original 

Case scratched and damaged.

We spend some time to fix these issues but after replacing the audio IC, a voltage regulator and zener diode, balance modulator, remove a short circuit in the IF part, repair cold joint at LED driver, put the PA in class A and perform some adjustments the transceiver came to live again!

Enclosure was also repainted and original knobs where placed.
Very nice to have a working 40 year old Sommerkamp saved from scrap!

The result (and yes it works on 10 meter band)

Sunday, December 13, 2020

Season’s Greetings

One of the strangest years ever ... let's hope 2021 saves us from all the misery! Happy holidays and stay healthy.