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| SETTINGS | CONNECTION | ADJUST | ADJUST FOR |
|---|---|---|---|
| REGULATOR VOLTAGE: RX Mode, AM, Band D, Ch. 1 | Connect Voltmeter positive lead to power switch. Connect Voltmeter negative lead to PCB ground. | VR601 | Adjust for 14.3 VDC |
| 10.240 MHz PLL REFERENCE: RX Mode, AM, Band D, Ch. 1 Remove TP7-TP9 Jumper PCB. | Connect Frequency counter to IC3 Pin 4. | Check for 10.2400MHz ±200 Hz. If tolerance is beyond this, replace X1 (10.240MHz). | |
| VCO OUTPUT: RX Mode, AM, Band D, CH. 1 | Connect scope to TP3 | L15 | Adjust for max. RF |
| VCO VOLTAGE: RX Mode, AM, Band D, CH. 1 | Connect DC voltmeter to TP2 | L14 | Adjust for 2.75 VDC ±0.1 Vdc. Check Band A, CH. 1 for approx. 2.0V. and Band H. CH. 40 for approx. 6.0V. |
| PLL MIXER OSCILLATOR: RX Mode, AM, Band D, CH. 1 Set Fine and coarse clarifier control to 12 oclock position. Set clarifier switch to RX/TX | Connect Frequency Counter to TP3. | L17 | AM: Adjust for 16.2700MHz ±20 Hz. |
| PLL MIXER OSCILLATOR: RX Mode, AM, Band D, CH. 1 Set Fine and coarse clarifier control to 12 oclock position. Set clarifier switch to RX/TX | Connect Frequency Counter to TP3. | L18 | USB: Adjust for 16.2725MHz ±20 Hz. |
| PLL MIXER OSCILLATOR: RX Mode, AM, Band D, CH. 1 Set Fine and coarse clarifier control to 12 oclock position. Set clarifier switch to RX/TX | Connect Frequency Counter to TP3. | L19 | LSB: Adjust for 16.2675MHz ±20 Hz. |
| FREQUENCY COUNTER: Set mode to AM RX Band D, CH.1 | VC1 on Counter PCB | Adjust VC1 on counter PCB for correct reading on display. |
| SETTINGS | CONNECTION | ADJUST | ADJUST FOR |
|---|---|---|---|
| AM/FM RF & IF SENSITIVITY: Set Radio to, Band D, CH. 1 Mode AM DIM/OFF/40dB switch to OFF RX/TX/OFF/RX switch to RX/TX Clarifier controls at center detent. RF GAIN fully clockwise. SQUELCH fully counter clockwise NB/ANL to OFFVOLUME to comfortable level. RF Generator output to input frequency of radio at 10uV modulated 30% with 1KHz audio tone. | Connect AF VTVM or scope across speaker terminals. RF Generator to ANT Jack | L5,L6,L7,L8,L9,L10,L2,L3 | Adjust for max. output reading on AF VTVM or Scope. Check for RX sensitivity of .5uv at 10dB S/N |
| AM/FM RF & IF SENSITIVITY: Set Radio to, Band D, CH. 1 Mode AM DIM/OFF/40dB switch to OFF RX/TX/OFF/RX switch to RX/TX Clarifier controls at center detent. RF GAIN fully clockwise. SQUELCH fully counter clockwise NB/ANL to OFFVOLUME to comfortable level. RF Generator output to input frequency of radio at 10uV modulated 30% with 1KHz audio tone. | Connect AF VTVM or scope across speaker terminals. RF Generator to ANT Jack | L5,L6 | Check sensitivity on Band A, Ch.1, then Band F, Ch.40. If necessary, retune L6 & L7 to balance RF sensitivity from lowest to highest frequency. |
| SSB IF SENSITIVITY: Set mode to USB. Set RF Generator output up 1KHz for USB at 1uV, no modulation. | Same as above | L11, L12 | Adjust for max. output reading on AF VTVM or Scope. Check for RX sensitivity of .1uv at 10dB S/N |
| FM DETECTOR: Set radio to FM mode. Set FM RF Generator output to input frequency of radio at 1uV modulated 30% with 1 KHz audio tone. Reduce VOLUME as required. | Connect AF VTVM or scope to IC2 Pin 7. FM RF Generator to ANT Jack | L4 | Adjust for maximum audio output. |
| AM/FM S-METER: Set mode to AM. RF Generator output to 100uV No Modulation Set Squelch fully counterclockwise. | RF Generator to ANT Jack | VR1 | Adjust for “S-9” meter reading. |
| SSB S-METER: Set mode to USB. Increase RF Generator output up 1KHZ, No Modulation. Set Squelch fully counterclockwise. | RF Generator to ANT Jack | VR2 | Adjust for S-9 reading. |
| AM/FM SQUELCH RANGE: Set RF Generator output to 20,000uV. Set Squelch Control fully clockwise. | Same as above | VR4 | Adjust to where the squelch just closes |
| SSB SQUELCH RANGE: Set mode to USB. Increase RF Generator output up 1KHZ for USB.Set Squelch Control fully clockwise. | Same as above | VR3 | Adjust to where the squelch just closes |
| NOISE BLANKER: Set radio to Band D, CH. 2 Set mode to AM. Set NOISE BLANKER switch to ON Set RF generator output frequency 10KHz below radio input frequency at 1000uV signal modulated at 30% with 1 KHz audio tone. | Connect DC Voltmeter to TP1 (Cathode of D2) | L1 | Adjust for maximum DC voltage. |
Remove TP7-TP9 Jumper PCB.
| SETTINGS | CONNECTION | ADJUST | ADJUST FOR |
|---|---|---|---|
| TX OFFSET FREQUENCY: Set mode to LSB RX | Connect Frequency Counter to TP3. | VR7 | Key TX; Adjust for 16.2675MHz ±20Hz. |
| TX CARRIER OSCILLATORS: AM TX Mode Band D CH. 1 | Connect Frequency Counter to TP6 | L25 | LSB/ TX mode: Adjust for 10.6975MHz ±20Hz. |
| TX CARRIER OSCILLATORS: AM TX Mode Band D CH. 1 | Connect Frequency Counter to TP6 | L24 | USB/ TX mode: Adjust for 10.6925MHz ±20Hz. |
| TX CARRIER OSCILLATORS: AM TX Mode Band D CH. 1 | Connect Frequency Counter to TP5 | L23 | AM/ TX mode: Adjust for 10.6950MHz ±20Hz. |
| DRIVER BIAS: (2SC2166) Set Radio to: Band D, Ch.1 Mode to USB MIKE GAIN at minimum. Remove shorting pcb from TP7,TP8, TP9 | Connect DC Ammeter between TP7 and TP9. | VR12 | Key TX adjust for 50-75mA. |
| FINAL BIAS: (2SC2312’s) Set Radio to: Band D, Ch.1 Mode to USB MIKE GAIN at minimum Remove shorting pcb from TP7,TP8, TP9 | Connect DC Ammeter between TP7 and TP8. | VR11, VR10 | Key TX and set VR10 & VR11 to 0mA. Then adjust VR11 for 50mA. and then adjust VR10 for total of 100mA for both. |
Replace TP7-TP9 Jumper PCB.
| SETTINGS | CONNECTION | ADJUST | ADJUST FOR |
|---|---|---|---|
| RF AMP CHAIN: Replace shorting pcb. Set mode to AM. Set RF power control to MAX. | Connect wattmeter to ANT output. | L44, L43, L42, L40 | Key TX & adjust (in order) for maximum RF output . Recheck power across entire freq. range. |
| SSB CARRIER BALANCE: Set mode to USB Set RF power control to Max MIKE GAIN to minimum. | Connect wattmeter to ANT output. | VR6 | Key TX, adjust for min. carrier leakthrough on scope or wattmeter. Recheck on LSB mode. If necessary readjust for best balance of sideband suppression between LSB & USB |
| SSB APC: Set mode to USB Set RF power control to MAX. MIKE GAIN to minimum. | Connect DC voltmeter from pcb ground to TP7 | VR17 | In TX, adjust for 13.0vdc |
| SSB ALC: Mode to USB. MIKE GAIN to maximum. Inject two-tone audio signal of 700Hz and 1900 Hz, 30 mV to Mic input. | Connect wattmeter to ANT output. | VR13 | In TX, adjust for 28 watts PEP. |
| AM CARRIER POWER: Set mode to AM, MIKE GAIN at minimum. RF Power control to MAX. | Connect wattmeter to ANT output. CAUTION! Do not exceed power levels. Damage to power transistors and inability to achieve 100% modulation from insufficient audio power will result. | VR14 | Set RF PWR to MAX. adjust for 10 watts |
| AM CARRIER POWER: Set mode to AM, MIKE GAIN at minimum. RF Power control to MAX. | Connect wattmeter to ANT output. CAUTION! Do not exceed power levels. Damage to power transistors and inability to achieve 100% modulation from insufficient audio power will result. | VR18 | Set RF PWR to MIN. Adjust for 1-2 watts |
| RF METER: Set mode to AM, RF Power control to MAX MIKE GAIN at minimum. | Connect wattmeter to ANT output. | VR9 | Adjust so RF meter agrees with Wattmeter. |
| AMC: Mode to AM. RF Power control to MAX. MIKE GAIN to maximum. Inject audio signal of 1KHz at 30mV to Mic input. | Connect modulation meter to ANT output. | VR16 | Adjust for 100% modulation depth. |
| MODULATION METER: Mode to AM. RF Power control to MAX. MIKE GAIN to maximum.Inject audio signal of 1KHz at 30mV to Mic input. | Connect modulation meter to ANT output. | VR15 | Adjust so meter agrees with modulation meter. |
| FM DEVIATION: Mode to FM MIKE GAIN to maximum. Inject 1 KHz, 30 mV audio signal at mike jack. | Connect deviation meter to ANT output. | VR5 | Adjust for total deviation of 4.5 KHz. |