[R-390] Sensitivity below 8 Mhz

[Pete Williams]

LOW SENSITIVITY -390A below 8 Mhz

G'day list...Apart from the obvious lack of activity in the 17Mhz xtal
oscillator . I found a fault not mentioned to best of my knowledge in the
literature that contributes to low sensitivity below 8 Mhz.
All voltages checked OK on the tube elements EXCEPT the voltage  at E209
test point was less than half the listed figure of  around 8 V.
Altho' the xfmr tuned to a peak, further examination concluded the only 
explanation -apart from tube- od bad ground, would be the feed back
capacitors in the oscillator circuit or the one in parallel with the xfmr.
Removing the RF module a pain and a shotgun approach not the best practice
but removal and replacement of all 3 produced success.
Full gain and voltage at test point per manual.
Caps SEEMED to check OK on a static test.
ALTERNAYIVE SOLUTIONS WELCOMED .Cheers 
Pete VK3IZ