SILTRONIX 1011B Betriebsanleitung PDF herunterladen (Seite 18)

TABLE 2. TROUBLESHOOTING GUIDE

DEFECT

POSSIBLE CAUSE

P A Idling Current

Unstable

1. Defective Power Amplifier Tube (V4).

2. Defective BIAS control and/or associated components.

3. Defective bias power supply.

Inability to Load per

Operation Instructions

1. Antenna not resonant at operating frequency.

2 Defective transmission line.

3. Defective antenna loading coi1(s).

4. Tubes VI through V4 defective.

Insufficient Sideband

Suppression

1. Carrier Oscillator (Q3) operating on incorrect frequency.

2. Crystal fllter defective or mistuned.

Insufficient Carrier

Suppression

1. Tube V13 defective.

2. Transformer T1301 defective or mistuned.

3. Oirrier O~i11ator (Q3) operating on incorrect frequency.

Microphonics in Transmitter

r:'I'iibes V13 and/or V14 defective.

2. IF coil 1701 Defective or incorrectly adjusted.

3. Microphone defective.

Low Receiver Sensitivity

1. Tubes VS through VIO defective.

2. mcorrect adjustment of the transmitter Pi-Network.

3. IF coil L80I incorrectly adjusted or defective.

4. Kl relay contacts defective.

TABLE 3. VFO AND CARRIER OSCILLATOR FREQUENCIES

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SILTRONIX 1011B Betriebsanleitung Seite 18