Dan says:
I have not seen any mods on the Internet for G76'ez... Anyone know of any? Reply from Jim WD5JKO: No not too much that I've seen. I have two G-76's myself, and the quality of the power supply is a factor in the quality of the transmitted signal. I have a home made (not by me) AC power supply that weighs a ton, and has a 3 tube regulated low B+. I am sure this helps. As Bret mentioned, the rcv audio output tube is also the audio driver for the xmit 6DQ6's. Having good fresh tubes here goes a long way towards better quality. Since the output tubes are acting as hi-mu triodes, the idle current could be too low if the high B+ is also too low. I forget how I did it, but I have a plug in meter that measures modulator cathode current. I also fiddled with that audio output stage by beefing up the idle current on xmit (maybe I did that on my G-50..), and heavily AC bypassed the cathode resistor, and added a little bit of inverse voltage feedback. Both receiver, and transmit quality stock seemed pretty decent, and was much better after the above said modifications. For receive, some say the IF band with is kind of broad. I recall cutting out some resistors that were across the IF coils. Without the resistors, the "Q" was higher, and therefore the bandwidth was more narrow. Six meters is a joke on the G-76. Don't try it unless you want to burn up your 6DQ5. If you are interested, I might be able to open up one of my G-76's so that I can document whatever I did. Regards, Jim WD5JKO --- [EMAIL PROTECTED] wrote: > > THIS TIME TO THE LIST ON PURPOSE...heheheheh... > > > Brett sez: > > > The receive audio sucks. > > And the TX audio sucks (surprise!). > > Hmmmmmm....I have heard G76s on 10 meter AM that > sound great! I wonder what they did to improve the > TX audio? > I have not seen any mods on the internet for > G76'ez... > Anyone know of any? > > Dan > > > ______________________________________________________________ > AMRadio mailing list > Home: > http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] > AMfone Website: http://www.amfone.net > AM List Admin: Brian Sherrod/w5ami, Paul > Courson/wa3vjb >
