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Heathkit HW-101 Troubleshooting

Heathkit HW-101
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Pin 9 of V14 = 1.5v p-p
Pin 8 of V14 = 1.5v p-p
Pin 6 of V14 = 35v p-p
Speaker Jack = .6v p-p
Add these voltages to your shop schematic.
ah.1.59. HW-101-55: AVC Decay Too Fast; S Meter Drops Too Quickly
November 19, 1979
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-55
Check for open R117 [PN 6-332]
When replacing this resistor, be sure to dress it away from the AVC wire ends
protruding from the IF board to insure that the wire ends will not pierce the resistor's film
coating.
ah.1.60. HW-101-56: Low Grid Drive on Certain Portions of One or More Bands
JANUARY 21, 1980
HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-56
The cause may be an improperly aligned or intermittent 8.395 - 8.895 Mhz bandpass
filter, T202 [PN 52-65].
An alignment problem can be corrected by sweep aligning T202.
Equipment Required:
ï‚· Post/Marker Sweep Generator (IG-5257 or equivalent) with Demodulator
ï‚· Probe (IG -5257) and Attenuator.
ï‚· Oscilloscope (IO-4550 or equivalent).
ï‚· RF Generator (MS-27 or equivalent).
Procedure:
 Unsolder T202’s two mounting lugs on the bottom of the Bandpass circuit board.
ï‚· Turn the unit over and remove the screw from the top of T202. Remove the shield
from T202.
ï‚· Connect your equipment as shown below:
HW-101 Service Bulletins Page 150

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Heathkit HW-101 Specifications

General IconGeneral
BrandHeathkit
ModelHW-101
CategoryTransceiver
LanguageEnglish

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