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General| Brand | Hallicrafters |
|---|---|
| Model | HT-44 |
| Category | Transmitter |
| Language | English |
Provides background on the HT-44, its production, features, and the document's aim.
Lists required test equipment and initial considerations for repair.
Critical steps for powering up the unit and verifying voltages.
Testing and aligning carrier, heterodyne, and VFO oscillators.
Setup and alignment procedures for mixer and IF stages.
Detailed alignment, neutralization, and band adjustments for driver/PA.
Procedures for testing modulation and carrier suppression.
Adjustments and voltage/signal checks for the microphone audio system.
Setup, testing, and signal/voltage measurements for the VOX system.
Test procedures for the anti-trip subsystem.
Troubleshooting driver/PA stages with static voltages and signal levels.
Final bias and PA output adjustments before going on the air.
Errata information and procedures for matching final tubes.
Contains voltage and signal data for various subsystems.
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