June 15, 1967 HW-22 Bulletin No: 40M SSB Transceiver HW-22-1D VFO Drift An incorrect shipment of coils has been included in a recent production run of the HW-12, HW-22 & HW-32. The coil Part Number is 52-25 & has a N-750 ceramic installed inside the can...rather than a silver mica. The mis-manufactured coil causes drifting in the circuit...which can be corrected by replacing with a # 52-25 of proper construction. All stock currently on hand in the parts dept is correctly manufactured. ------------------------------------------------------------------------------------------------------------------ April 15, 1968 HW-22 Bulletin No: 40M SSB Transceiver HW-22-2D IF Feedback In Receive Mode R-121 may be changed from 12K ohm to 22K ohm 2W [PN 1-11-2] to stop IF feedback in receive operation. ------------------------------------------------------------------------------------------------------------------