Check the belt for being loose or worn and replace as needed. Lubricate the bearing of
the variable capacitors.
If lubricating the capacitor bearings does not allow the rotor to turn freely, replace the
capacitor [PN 26-122].
ah.1.33. HW-101-30: Loading Capacitor Turns as Plate Capacitor is Rotated
AUGUST 1, 1978
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-30
SEE BULLETIN NO: HW-100-16 DATED AUGUST 3, 1978.
ah.1.34. HW-101-30: Loading Capacitor Turns as Plate Capacitor is Rotated
HW-101 BULLETIN NO: HW-101-30
This problem can be caused by:
ï‚· Insufficient friction in the loading capacitor or;
ï‚· Excessive friction between the plate and load tuning shafts.
If the problem persists after freeing and lubricating the shafts, install a rubber grommet
[PN 73-3] on the loading capacitor shaft between the pulley and the RF cage. Apply
slight pressure to the grommet as the pulley set-screw is tightened. This will add
enough friction to keep the loading capacitor still while tuning the plate control. Use
only as needed.
ah.1.35. HW-101-31: Relays Chatter in VOX Mode
AUGUST 3, 1978
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-31
SEE BULLETIN NO: HW-100-15 DATED AUGUST 3, 1978.
ah.1.36. HW-101-32: "Chirping" and Slow Receiver Recovery
AUGUST 3, 1978
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-32
If "chirping" of the audio in the receive mode and slow recovery of the receiver after long
periods of transmitting are encountered, remove the cover of RL2 and check for carbon
buildup at the base, just below the contact. Clean dirt or carbon tracks, or replace if
necessary.
A dirt or carbon buildup will cause the +300 volts to be applied to adjacent contacts
such as the bias or AGC lines, adversely affecting receiver cutoff by upsetting the
operation of 1] V12, receiver mixer; 2] V10, RF amplifier; and 3]V11, first receiver mixer.
HW-101 Service Bulletins Page 144
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