Gonset Gsb 101 Manual

The internal relay switches the transmit and receive relay for use with twins, but isn't this keyed with 110VAC? You will have to forgive my ignorance but I do not know much about amps. The Gonset manual shows the -100 bias for turning off the tubes during receive and a 110VAC line for switching the transmit / receive relay so the receiver gets cut out during transmit. What actually keyes the amplifier then, just the rf from the transmitter?

Any suggestions for a modification for this amp? Download Do Filme Bee Movie Dublado Rmvb. The GSB-101 gets its cutoff bias from an external source, and indeed keys the internal relay with 110v AC. This is dangerous and won't work with any sort of transceiver, let alone modern solid-state ones. The natural solution is to do what did with a sparkling new looking GSB-201 owned by local ham K6DNW, and that is to re-build the amplifier, using modern circuits to interface to the ancient ones already in the amplifier.

In that unit, I added an internal Dow-Key DK260 double-pole coaxial RF transfer relay as a new T/R 'bypass' relay so the rig would work with a transceiver, rather than a separate TX and RX. Then, I built a little 12Vdc power supply into the Gonset to power that relay, and added a buffered low-voltage key line input to the rear panel in the form of an RCA phono jack. Now the rig will interface with any transceiver in the world, and keys with 12v at about 10 mA. I also had to add an internal standby (cutoff) bias supply circuit, made with an isolation transformer and filtered full-wave bridge.