[Milsurplus] Tuning problems with GRC-9

[Richard Brunner]

"Wim Lakeman" said:
" I have some antenna tuning problems with the GRC-9.
 The neon indicator will not glow up permanently whatever I do with the
 switches A and C. After a short flash of the indicator lamp it's all over.
It
 is not possible to tune the antenna in resonance with the transmitter
 signal...."

One possibility is no "keep alive" voltage on the neon lamp.  The neon lamp
is in series with a 22 Meg. resistor (R122) from ground, and a 22 Meg.
resistor (R123) to B+.  If a resistor is open, the neon lamp will probably
not light with rf.

Richard Brunner, AA1P