I finally got around to restoring the old gal and it works pretty good
except for an annoying chirp on CW. It sounds like the VFO has trouble
starting and when it does the frequency shifts slightly down on keying.
Tubes are good and supply voltages look ok. Any ideas? Thanks much and 73!
Joe, KF9EU

Joe Bucher wrote:
I finally got around to restoring the old gal and it works pretty good
except for an annoying chirp on CW. It sounds like the VFO has trouble
starting and when it does the frequency shifts slightly down on keying.
Tubes are good and supply voltages look ok. Any ideas? Thanks much and 73!
Joe, KF9EU

Hi,

I had a chirpy Apache at one time, and had luck
substituting a 6AH6 for the 6AU6 in the VFO
(both tubes have the same pinouts).
This trick appeared in 73 Magazine in the early 60's.

73,
Ed Knobloch

"Edward Knobloch" wrote in message
...
Joe Bucher wrote:
I finally got around to restoring the old gal and it works pretty good
except for an annoying chirp on CW. It sounds like the VFO has trouble
starting and when it does the frequency shifts slightly down on keying.
Tubes are good and supply voltages look ok. Any ideas? Thanks much and
73!
Joe, KF9EU

Hi,

I had a chirpy Apache at one time, and had luck
substituting a 6AH6 for the 6AU6 in the VFO
(both tubes have the same pinouts).
This trick appeared in 73 Magazine in the early 60's.

73,
Ed Knobloch


Check out 'electric radio' and or am international on the google search
engine. The DX-100 has been changed and modified to the high nines and Im
sure you can find some info on it.

Dan/W4NTI

"Joe Bucher" wrote in message ...
I finally got around to restoring the old gal and it works pretty good
except for an annoying chirp on CW. It sounds like the VFO has trouble
starting and when it does the frequency shifts slightly down on keying.
Tubes are good and supply voltages look ok. Any ideas? Thanks much and 73!
Joe, KF9EU

Hi:
I use to have an old TX-1! No crystals, just a 6AU6 tube in the
tuner that always had heater power, even with the power-switch off. I
think in CW, as long as it's in TX mode, even while unkey'd, the VFO
was running. It didn't chirp if I ran the finals under light load.
(low cap 'tune' - high cap 'load')
If I tuned it for max output at a given load, it would chirp.