Thanks, Larry. You have answered my question. I plan on pairing up the Gonset with a National NC-303 for a vintage SSB pair. Vintage AM can be handled here by a variety of other transmitters & receivers. (you should hear my re-workewd Apache sometime...)
I looked in my tube stash the other night; lo and behold, I have SIX 12AV7s that I had not previously noticed, because I didn't previously have a use for them. How 'bout that? -- regards, Mahlon - K4OQ Icom IC-756 / IC-765 / IC-821 / IC-W32A Drake R-4C / T4-XC / TR-4C / MN-2000 Gonset GSB-100 Johnson Viking Ranger / Viking Valiant Heathkit Apache / Mohawk / Shawnee Alpha 91b / B&W PT-2500A National NC-303 / NCX-3 R-390A Open Line of Credit with Gulf Power Larry Szendrei wrote: > > Mahlon, > > I don't know the whole story, but I do know that my GSB-100 also had a > 12AT7 in place of the 12AV7 when I acquired it. I can guess that it was > a popular substitution because (1) the AT7 is a helluva lot more common > than the AV7, and (2) it worked. I tried a 12AV7 in mine (I had exactly > one in a junk box of hundreds, maybe thousands, of tubes) and there was > no noticible difference in the XTAL osc. output. > > Enjoy the GSB-100 on SSB, and even AM, but there are much better choices > of transmitters available for the latter. > > 73, > -Larry/NE1S > > Mahlon Haunschild wrote: > > > > Hello, list. This question isn't exactly AM-related, but the equipment > > in question is in the same vintage so I guess it's OK (besides, I do > > plan on at least TRYING AM on it eventually) anyway, here goes: > > > > Just acquired a Gonset GSB-100 transmitter over the weekend, and > > everything appears to be in order with it except for the crystal > > oscillator tube (V10). The book lists a 12AT7 in this location, but the > > book's schematic and the transmitter itself show a 12AV7 instead. WHich > > is correct? These two tubes aren't nearly the same, but on the other > > hand the transmitter works, so should I just not worry and be happy? > > > > -- > > regards, > > > > Mahlon - K4OQ
