If Noise; S Meter; Fm Quadrature; 100 Watt Bias Adjustment - Ranger AR-3300 Alignment Procedure

3. - Adjust T-1, T-2 & T-3 for max AF output ( output of Signal
Generator should be about 12 db Sinad.
1. - Set radio to LSB mode and disconnect any input to antenna terminal.
2. - Adjust R-39 ( IF GAIN ) for an AF output of 0.2 VRMS with "AF GAIN" at MAX
1. - Set radio to 28.0000 Mhz. on FM mode
2. - Apply a 28.0000 Mhz. signal to antenna at 50 uV.
3. - Adjust VR-7 so that four LED bars are lit.
4. - Set radio to USB mode.
5. - Adjust VR-9 so that four LED bars are lit.
1. - Set the radio to FM mode. Inject a 28.0000 FM deviation at 5 Khz, 1 Khz tone signal
from signal generator to antenna. Connect scope to junction of R-123 & C-96.
2. - Adjust T-18 for Max sin wave with minimum distortion.
1. - Set radio to 28.0000 Mhz. on SSB mode.
2. - Set "MIKE GAIN" to minium and adjust VR-9 & VR-10 ( Balanced Modulator) for minimum
RF output These controls should be balanced for even output on LSB & USB. IF ADJUSTMENT
IS REQUIRED AT THIS STEP THEN REPEAT STEP 6 OF PLL-VCO ALIGNMENT.
3. - Set "MIKE GAIN" to Minimum, MODE to LSB TX.
198 and ground. Adjust VR-14 for 0.68 VDC (Driver Bias.)
Move DVM to ferrite bead side of R-190
Adjust VR-12 for 0.68 VDC ( Final Amp Bias.)
Move DVM to ferrite bead side of R-194
Adjust VR-13 for 0.68 VDC ( Final Amp Bias.)
NOTE : After VR-12, VR-13 are adjusted,
Re-Adjust VR-14 for best swing.
Remove Red power lead of amplifier at main power jack. Insert AMP Meter in series with
removed red wire and positive pin of power jack. Adjust VR-101 for 150 Milliamperes.
4. - Set "Mike Gain" to max and apply 1,000 Hz. tone to microphone. Adjust VR-15 for Max
RF output.
5. - Adjust T-22, T-21, T-20 & T-19 for Max RF output
6. - Balance RF output between lowest & highest freq. with L-6, L-7 & L-9
7. - Readjust VR-15 (ALC) so that output power just starts to drop
( about 2 watts.)
1. - Set radio to 28.0000 Mhz. AM mode, Mic gain Max.
2. - Adjust VR-6, ( AM POWER ) for 7 Watts output power
( 30 Watts for 100 Watt Model )
3. - Apply 1,000 Hz. tone to microphone and Adjust VR-17 (AMC) for 95 %

IF NOISE

S METER

FM QUADRATURE

TRANSMITTER - SSB MODE

100 WATT BIAS ADJUSTMENT

AM MODE
Connect DVM to ferrite bead side of R-