Page 1 of 21
TRX Bench
Götting HG70D 2M FM-SSB-AM transceiver repair
This 50 year old transceiver had no power output.
There were several reasons for this.
First, all foil trimmers in the PA were fried...., the needed to be replaced.
It also turned out that a 10 ohm 5 Watt resistor became 8 Kohm...
It also turned out that no 24V was present on the PA so I checked the 2N3055,
this is the switching transistor and voltage regulator for the PA supply voltage.
The 2N3055 turned out to be defective, the transistor that switches the 2N3055 at
TX the BC140-16 was also defective.
All parts replaced and now the set works again!
Click here to see the fotoalbum of the Götting HG70D repair
CliCK BELOW FOR THE REPAIR OF THE HG70D ON YOUTUBE