By Walter Cates WD0GOF (UPDATE 10/30/2013)
11
SR-150 REFURBISHING AND REPAIRING CONTINUED:
1-8-2-2 Final receiver test.
With the ground still connected to the AGC line. With the equipment set up as in step 12 in the table;
1
, remove the gnd from the AGC line. If the audio output decreases more than 2db or goes away you have a
fault in the AGC and this fault must be cleared before continuing.
2
, Connect the gnd lead to the tie point of R22 and C39 (this is in the cathode of V4). If the audio output from
the receiver increases with the grounding of this point then you have a defective R10 (RF GAIN POT). You can
have up to 1db difference and the receiver will function properly. More than 1db and the sensitivity will be
adversely affected. Also, The S meter will not function correctly. See the section on RX GAIN ANOMALY for
aid in clearing this fault.
You are ready to
proceed to the
TRANSMITTER
TESTING
section.
Summary of Contents for SR-150
Page 18: ...By Walter Cates WD0GOF UPDATE 10 30 2013 18...
Page 19: ...By Walter Cates WD0GOF UPDATE 10 30 2013 19 BEFORE CLEANING CLEAN CHASSIS...
Page 20: ...By Walter Cates WD0GOF UPDATE 10 30 2013 20 3 1 2 TUBE SOCKET CLEANING KIT...
Page 21: ...By Walter Cates WD0GOF UPDATE 10 30 2013 21 3 1 3 AIR VARIABLE CLEANING...
Page 30: ...By Walter Cates WD0GOF UPDATE 10 30 2013 30 3 5 5 K3 WIRING AND PIN OUT...
Page 38: ...By Walter Cates WD0GOF UPDATE 10 30 2013 38 4 DATA SHEETS...
