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| Table 2-2 KWM-2/2A Operating Control Functions | |||
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INDEX |
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| Function (S11) OFF ON NB CAL |
Removes ac power from power supply. Connects ac power to power supply Turns on accessory noise blanker when used Turns on 100-kHiz crystal calibrator | ||
| MIC CAIN (R8 S10) | Controls audio amplifier gain for SSB operation, and controls tone level for CW operation. | ||
| EXCITER TUNING | Controls all ganged slug tuned circuits In receiver and exciter portion or transceiver | ||
| Crystal board selector (S15) (in KWM-2A only) |
Selects second bank Of crystals for additional coverage and changes scale BAND switch | ||
| BAND (S2 through S8, S13) | Selects capacitors and crystals needed to tune transceiver to desired 200-kHz band. S13 grounds a different pin on J25 for each band for remote antenna selection | ||
| P.A. TUNING (C150) | Resonates to pa Plate circuit to operating frequency | ||
| AF GAIN (R92) | Controls receiver audio amplifier gain | ||
| R.F. GAIN R84) | Controls gain of receiver-transmitter rf amplifier and receiving it amplifiers during receiving. | ||
| Meter switch (S12) PLATE GRID ALC |
Measures pa plate current by measuring pa cathode voltage changes Measures pa grid current Shows ALC action by measuring cathode voltage changes at transmitter if amplifier V4A. |
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| EMISSION (S9) LOCK TUNE LSB USB CW |
Measures pa plate current by measuring pa cathode voltage changes Reduces pa screen voltage with series resistor, and produces CW carrier for tuneup Selects LSB bfo crystal and raises vfo frequency for LSB operation Selects USB bfo crystal and lowers vfo frequency for USB operation. |
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| ANTI-VOX CAIN (R45) | Controls level of anti VOX signal fed to VOX circuit | ||