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CAUTION: Use isoloation transformer or observe polatity when connecting test equipment. Maintain line voltage at 120V AC. Allow 15 minute warm up period. Adjustments made with 13.8V DC input. Connect low sides of test equipment to ground unless specified otherwise. Connect 50 ohm dummy load to antenna input before keying transmitter. Connect Microphone.
| Test Equipment | Transciver | Adjust | Remarks |
|---|---|---|---|
| Input of freq counter to TP13 (IC1 pin 8) | CH19 | Check for 10.240MHz | |
| Input of oscope to TP10 | CH19 AM | L21 | Adjust for maximum RF. RF 3.4V p-p typical |
| Input of DC meter to TP9 | CH40 AM | L19 | Adjust for 3.00V. Check for appx 2.00V on CH 1 |
| Input of oscope to TP1 | CH19 AM | L20 | Adjust for maximum RF. (190mV p-p typical) |
| Input of freq counter to TP1 | CH1 AM | L23 | Adjust for 34.7650MHz +20Hz |
| same as above | CH1 USB | L59 | Adjust for 34.7665MHz +20Hz |
| same as above | CH1 LSB | L22 | Adjust for 34.7635MHz +20Hz |
| Input of freq counter to TP10 | CH1 AM | Check for .790MHz (790KHz) | |
| Input of freq counter to TP3 | CH19 USB | CT2 | Adjust for 7.8015MHz +5Hz -0Hz |
| same as above | CH19 LSB | L30 | Adjust for 7.7985MHz +0Hz -5Hz |
| Input of freq counter to TP14 (IC3 pin 7) | CH19 AM xmit | L31 | Adjust for 7.800MHz +5Hz |
| Input of freq counter to TP15 (FET 1 GATE 1) | CH19 AM | Check for 7.3450Mhz | |
| Input of freq counter to antenna input | CH1 AM xmit | VR5 | Adjust for 26.9650MHz |
Connect a AC VTVM or AF wattmeter across speaker voice coil. Adjust volume control to obtain suitable indication. Set generator output low enough to preven AGC limiting. Preset controls as follows unless otherwise noted:
| Test Equipment | Transciver | Adjust | Remarks |
|---|---|---|---|
| Output of signal gen thru .01uF to TP16 (TR15 Emitter) 7.8000MHz no modulation | CH19 USB | L14,L12,L10,L9,L8,L7 | Adjust for maximum output |
| Output of signal gen thru .01uF to TP15 (FET Gate 1) 455KHz 1KHz @ 30% modulation | CH19 AM | L15,L13,L3 | Adjust for maximum output |
| Output of signal gen thru .01uF to antenna input. 27.1850MHz 1KHz @ 30% modulation | CH19 AM | L6,L5,L4 | Adjust for maximum output, readjust L7,L8,L9,L10,L3,L13,L15 for maximum |
| Output of signal gen thru .01uF to antenna input 27.1850MHz 1KHz @ 30% modulation input of oscope to TP17 (D2 Cathode) | CH19 AM | L1,L2 | Set generator output for 10DB signal to noise plus noise ratio of receiver. Inject a 100pps, 1uSec pulse width signal at antenna input. Switch NB on and adjust for maximum plulse amplitude. (8.2V peak typical) |
| Output of signal gen thru .01uF to antenna input. 27.1850MHz 1KHz @ 30% modulation, output 100uV | CH19 AM | VR1 | AM SIGNAL METER, Adjust for S9 on signal meter |
| Output of signal gen thru .01uF to antenna input, 27.1860MHz no modulation output 100uV | CH19 USB | VR2 | SSB SIGNAL METER, Adjust for S9 on signal meter |
Connect a 25 watt dummy load to antenna connector
| Test Equipment | Transciver | Adjust | Remarks |
|---|---|---|---|
| Input of RF wattmeter to antenna input | CH19 AM | L47,L48,L46,L45,L38 | Adjust for maximum RF output |
| Input of specturm analyzer or harmonic meter to antenna input | CH19 AM | L36 | Adjust for Minimum at 54MHz (2nd harmonic) |
| Input of RF wattmeter to antenna input. no modulation | CH19 USB Dynamike MINIMUM | VR4 | CARRIER BALANCE, Adjust for MINIMUM RF output |
| Input of RF wattmeter to antenna input, insert a 0-500mA DC meter at TP3. no modulation | CH19 USB | VR9 | DRIVER BIAS, Adjust for 30mA idle current |
| Input of RF wattmeter to antenna input, insert a 0-500mA DC meter at TP7 no modulation | CH19 USB Dynamike MINIMUM | VR8 | FINAL BIAS, Adjust for 60mA idle current |
| Input of RF wattmeter to antenna input, inject a two tone 500mV audio signal at mic input | CH19 USB Dynamic Maximum | VR11 | SSB ALC, Adjust for 11.5 watts PEP RF output maximum |
| Input of oscope or modulation meter to antenna input, inject a 1KHz tone at 20mV audio signal at mic input | CH19 AM Dynamike Maximum | VR12 | AM AMC, Adjust for 100% modulation maximum |
| Input of RF wattmeter to antenna input | CH19 AM dynamike minimum | VR10 | AM CARRIER POWER, Adjust for 4.0 watts RF output maxium |
| Input of oscope or modulation meter to antenna input. injuect 1KHz audio signal at mic input set gen output to produce 100% modulation | CH19 AM Dynamike maximum | VR7 | MOD METER, Adjust for 100% on Mod scale of meter |
| Input of RF wattmeter to antenna input | CH19 AM dynamike minium | VR6 | RF POWER METER, at 4.0 watts of RF power adjust for RF PWR Meter agrees with RF wattmeter |
| Test Equipment | Transciver | Adjust | Remarks |
|---|---|---|---|
| Input of oscope to TP504 (IC512 pin 5) | CH19 AM Voicelock midrange counter/tme counter | L501 | Adjust for maxium then rotate core 1/2 turn clockwise |
| Input of oscope to TP502 | CH19 USB | L502 | Adjust for maximum RF |
| Input of oscope to TP502 | CH19 AM voicelock midrange COUNTER/TIME Counter | CT501 | Adjust for 27.1850 on counter display |