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Caution: Use isolation transformer or observe polarity when connecting test equipment. Maintain line voltage at 120V AC. Allow a 15 minute warm-up period. Adjustments made with 13.8V DC Input. Connect low sides of test equipment to gorund unless specified otherwise. Connect 50 ohm dummy load or antenna before keying transmitter.
| Test Equipment | Transceiver | Adjust | Remarks |
|---|---|---|---|
| Input of RF VTVM to TP6 | CH1 AM Clarifier mid range | L24 | Adjust for maximum. |
| Input of DC meter to TP7 | CH1 | L17 | Adjust for 2.0V |
| Input of RF VTVM to TP8 | CH19 | L16 | Adjust for maximum. |
| Input of freq counter to TP8 | CH19 | CT6 | Adjust for 34.9850MHz +/- 20Hz |
| Input of freq counter to TP8 | CH19 USB | CT4 | Adjust for 34.9875MHz +/- 20Hz |
| Input of freq counter to TP8 | CH19 LSB | CT5 | Adjust for 34.9825MHz +/- 20Hz |
| Input of freq counter to TP8 | CH19 LSB TX | VR9 | Adjust for 34.9825MHz +/- 20Hz |
| Input of freq counter to TP9 | CH19 USB | CT2 | Adjust for 7.8025MHz +5Hz -0Hz |
| Input of freq counter to TP9 | CH19 LSB | CT3 | Adjust for 7.7975MHz +0Hz -5Hz |
Connect an AC VTVM or AF wattmeter across speaker voice coil. Adjust volume control to obtain a suitable indication.
| Test Equipment | Transceiver | Adjust | Remarks |
|---|---|---|---|
| Output of signal gen thru .01uF to antenna jack. 27.186MHz no modulation .25uV | CH19 USB RF Gain Max, Clarifier mid range, Volume Max | L8,L7,L6,L5,L4,L3 | Adjust for maximum output. |
| output of signal gen thru .01uF to antenna jack. 27.186MHz no modulation output .25uV | CH19 | CT1 | Adjust for .5 watts audio |
| Output of signal gen thru .01uF to antenna jack. 23.5MHz no modulation, output 200uV. Input of RF VTVM to TP5 | CH19 AM RF GAIN Max NB on | L1,L2 | Adjust for maximum |
| Output of signal gen thru .01uF to antenna jack. 27.186MHz no modulation, output 250uV | CH19 USB RF Gain max Volume max | VR2 | RF GAIN RANGE Adjust VR2 for .5V audio |
| Output of signal gen thru .01uF to antenna jack. 27.186MHz no modulation, output 100uV | CH19 | VR1 | S METER adjust for S9 on S meter |
| Output of signal gen thru .01uF to antenna jack. 27.186MHz no modulation, output 500uV | CH19 | VR3 | SQUELCH RANGE, set SQL control VR404 fully clockwise. Adjust VR3 so that squelch just breaks. |
| Output of signal gen thru .01uF to antenna jack. 27.185MHz 1KHz at 30% | CH19 | VR5 | AM BALANCE Adjust VR5 for .5V audio |
Connect an RF wattmeter and 50 ohm 25 watt dummy load to antenna connector. NOTE: Be sure to check transmit frequency and power on all active channels after alignment of transmitter.
| Test Equipment | Transceiver | Adjust | Remarks |
|---|---|---|---|
| Output of 2-tone generator to microphone input. 500Hz and 2400Hz at .5V | CH19 USB Mic Gain max | L39,L37,L32,L30 | Adjust for maximum |
| Output of 2-tone generator to microphone input. 500Hz and 2400Hz at .5V | CH19 LSB | CT7 | Adjust CT7 for 12 watts |
| Input of spectrum analyzer to antenna jack | CH19 | L27 | Adjust for minimum signal at 54MHz (2nd harmonic) |
| Input of DC meter to TP10 | CH19 | RT301 | VOLT REG, Voltage should not vary when keying transmitter. |
| DC current meter to TP3 and TP4, no modulation | CH19 USB | VR15 | BIAS, Adjust VR15 for 40mA +/- 10mA |
| DC current meter to TP1 and TP2, no modulation | CH19 USB | VR16 | BIAS, Adjust VR16 for 70mA +/- 10mA |
| No modulation | CH19 USB | VR4 | BALANCE, Adjust for minimum RF |
| No modulation | CH19 AM | VR8 | AM REG, Adjust VR8 for 3.8 watts |
| No modulation | CH19 AM | VR12 | RF PANEL METER, Adjust VR12 for 3.8 watts on the RF scale of meter |
| Modulation meter to antenna jack | CH19 AM | VR7 | AM AMC, Adjust signal for 50% modulation, Increse signal 630 times, Adjust VR7 for 100% Modulation |