Specifications

Radio Alpha Products Inc. ® Alpha 99
28
1. Tuning Up for Operation at 1,500 Watts RF Output
Preset BAND, TUNE, and LOAD controls to the nominal positions given in Table 1,
below*:
Table 1 – Preliminary Tuneup Settings
Band (MHz) Frequency (MHz) Tune Load
1.8 1.8 60 1
4
1.8 2.0 20 65
3.5 3.5 67 40
3.5 3.75 58 60
3.5 4.0 50 75
7 7.15 45 35
10 10.13 15 26
1
4
14.2 70 40
18 18.1 50 55
21 21.2 40 65
2
4
24.9 65 60
28 28.0 32 72
28 28.6 2
4
7
4
28 29.7 18 76
*Each Alpha 99 shipped from our factory will include an individual table showing the
tune and load settings we used to achieve full output power on that amplifier into a 50
ohm delivery load. These settings may vary slightly from those in the manual.
NOTE: Final TUNE and LOAD settings will vary with the operating frequency,
antenna characteristics and power level.
2. Reduce transceiver carrier output control to ZERO.
3. Press OPR (operate) on OPR-STBY switch. OPR LED should light.
4. Select TUNE function of the multimeter bargraph.
IF AT ANY TIME IN THE FOLLOWING PROCEDURE THE AMPLIFIER
FAILS TO RESPOND AS DESCRIBED, REMOVE DRIVE IMMEDIATELY!
5. Switch transceiver to CW and increase its carrier output to approximately 15 watts
(99 output apporx. 300-500 watts).
6. Adjust TUNE control to deflect the TUNE LED maximum leftward.