Is the NB-4 Noise Blanker installed? If so remove the NB from the R4-C and
install the jumper socket and see if the effect remains.
Chances are the NB is the issue and will need to be realigned and the NB
gain reset.
JB
From: drakelist-boun...@zerobeat.net
For Sale:
Transmitting Tubes:
All of these are NOS (New, old stock), in their boxes.
6JE6
This sweep tube was used in many transmitters.
This one even has its original bill inside the box!
$20
Two 6146 B Tubes
These are the heavier duty B version of the popular
tube.
$20 each, or buy both
FOR SALE DRAKE PS-7 power supply good condition $90 plus shipping.WANTED WANTED
AM and CW filters ,noise blanker and service manual for the TR7,also want
junker TR7 and R7 partial or complete chassis.Contact David at 1-251-478-8823
or
The following Drake items are for sale only as a package deal:
TR7A Ser. No:12042
PS7 10648
RV7 Remote VFO 1140
SP75 Speech Processor1154
MS7 Speaker
MN4 Ant. Tuner 3470
Drake Desk Microphone
Hi Bob I think you hit it on the head. Also I'm suspect of the NB cable
harness being draped above the 3rd mixer tube area. I only regret not having a
low end Spectrum Analyzer to end this design anomaly and improve this
situation. As suggested I need to disconnect the NB and short some NB
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