3. Ground the shields to a ground foil near the junction of R213 and R214.
ah.1.46. HW-101-42: Unit "Warbles" When Chassis Is Tapped
DECEMBER 27, 1978
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-42
This "warble" has been traced to the VFO assembly. This occurs especially when the
leads of the C946 and C953 capacitor combination is too long, enabling the capacitors
to vibrate.
To solve this problem, glue the top of C946 [4700pf] to the chassis wall of the VFO
assembly. The PN 350-12 glue may be used.
ah.1.47. HW-101-43: Poor Sensitivity or Grid or Plate Driver Coils Will Not Tune
January 24, 1979
HW-101 Bulletin No: SSB Transceiver HW-101-43
Check the lugs that are nearest the chassis and verify that they are not folded under the
capacitors; thus shorting them out.
ah.1.48. HW-101-44: No Ground Pin on Tube Sockets at V10 And V11
January 25, 1979
HW-101 Bulletin No: SSB Transceiver HW-101-44
The 7-pin tube sockets [PN 434-112] now used at V10 and V11 on the RF driver circuit
board do not have a ground pin in the center. Only the 7-pin socket [PN 434-129] at V6
on this board uses a ground clip.
ah.1.49. HW-101-45: VFO Will Not Adjust Properly
February 16, 1979
HW-101 Bulletin No: SSB Transceiver HW-101-45
If the unit will not track at 0 and 500, or if it will track at 0 and 500, but the error at 100,
200, 300, 400 is greater than specifications, then make sure the slug in the VFO coil is
adjusted to the lower of the two peaks. To check, insert the shorter end of PN 490-1
tuning tool into the coil. The body of the tool should just touch the top of the coil form. If
it sticks out a half inch, the coil is at the wrong peak. Turn slug into coil and readjust
tracking.
ah.1.50. HW-101-46: Low Power Output; Poor VOX Sensitivity
April 25, 1979
HW-101 Bulletin No: SSB Transceiver HW-101-46
See Bulletin No: HW-100-21 Dated April 25, 1979
HW-101 Service Bulletins Page 147
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