Heathkit SB-10 Series Troubleshooting Manual page 10

ah.1.39.HW-101-35: Poor IF Sensitivity..............................................................................................................145
ah.1.40.HW-101-36: Receiver Recovery Slow....................................................................................................145
ah.1.41.HW-101-37: R-940 Shorting To Shield...................................................................................................145
ah.1.42.HW-101-38: Poor Carrier Suppression...................................................................................................145
ah.1.43.HW-101-39: Identification of The 6146a Tubes......................................................................................146
ah.1.44.HW-101-40: Noise or Static From Speaker When Chassis Tapped Lightly...........................................146
ah.1.45.HW-101-41: Relay Chatter in Any Setting of The VOX Sensitivity Control............................................146
ah.1.46.HW-101-42: Unit "Warbles" When Chassis Is Tapped...........................................................................147
ah.1.47.HW-101-43: Poor Sensitivity or Grid or Plate Driver Coils Will Not Tune...............................................147
ah.1.48.HW-101-44: No Ground Pin on Tube Sockets at V10 And V11.............................................................147
ah.1.49.HW-101-45: VFO Will Not Adjust Properly.............................................................................................147
ah.1.50.HW-101-46: Low Power Output; Poor VOX Sensitivity..........................................................................147
ah.1.51.HW-101-47: Driver Preselector Won't Peak for Full Output at 7.0 MHZ................................................148
ah.1.52.HW-101-48: PEC [PN 84-22] No Longer Used......................................................................................148
ah.1.53.HW-101-49: Changeover to 6146B Finals..............................................................................................148
ah.1.54.HW-101-50: R940 Overheats................................................................................................................. 148
ah.1.55.HW-101-51: Operation of Mode Switch Trips VOX ...............................................................................148
ah.1.56.HW-101-52: VFO Stops Working at High End of All Bands ..................................................................149
ah.1.57.HW-101-53: Low Transmitter Output; Low Receiver Sensitivity ............................................................149
ah.1.58.HW-101-54: Receiver Audio Troubleshooting Information ....................................................................149
ah.1.59.HW-101-55: AVC Decay Too Fast; S Meter Drops Too Quickly ...........................................................150
ah.1.60.HW-101-56: Low Grid Drive on Certain Portions of One or More Bands ..............................................150
ah.1.61.HW-101-57: Relay Chatter in VOX Mode ..............................................................................................151
ah.1.62.HW-101-58: Receiver Oscillations .........................................................................................................152
ah.1.63.HW-101-59: Finals Will Not Neutralize; C913 at Maximum Capacity ....................................................152
ah.1.64.HW-101-60: RF Mod in CQ Magazine ...................................................................................................152
ah.1.65.HW-101-61: Parasitic Oscillations..........................................................................................................153
ah.1.66.HW-101-62: Phase Shift Circuit Board Parts List...................................................................................153
ah.1.67.HW-101-63: VOX Delay Too Short.........................................................................................................154
ah.1.68.HW-101-64: Load Control Squeaks with the HW-101-30 Mod Installed................................................154
ah.1.69.HW-101-65: CW Sidetone Inoperative...................................................................................................154
ah.1.70.HW-101-66: Rotary Switch Detent Change............................................................................................154
ah.1.71.HW-101-67: Cannot Zero S Meter with the Meter Zero Control.............................................................155
ah.1.72.HW-101-68: Wiring for Use With The HD-15 Phone Patch....................................................................155
ah.1.73.HW-101-69: No Power Output in USB Or LSB; Tune Okay...................................................................155
ah.1.74.HW-101-70: Sidetone is Too Loud.........................................................................................................155
ah.1.75.HW-101-71: The #266-1116 Switch Detent Breaks During Installation..................................................156
ah.1.76.HW-101-72: VOX Cycling....................................................................................................................... 156
ah.1.77.HW-101-73: Tone in Audio When Switch To CW; Relay Chatters When Key is Closed........................156
ah.1.78.HW-101-74: Keys Continuously When Used With the SA-5010 Memory Keyer....................................157
ah.1.79.HW-101-75: R940 Overheats................................................................................................................. 157
ah.1.80.HW-101-76: Carrier Null Control Installation Change.............................................................................157
ah.1.81.HW-101-77: VFO Stops Oscillating at High End of Dial.........................................................................157
HW & SB Series Manual Page 10