Alpha 8100 Operating Manual page 42


Alpha Radio Products alternate tune up procedure.
"Nominal Gain" Method
Tuning up for Operation at 1,500 W RF Output.
Preset BAND, GAIN, and LOAD controls to the nominal positions given in your amp's specific tune up
table or Table 6.3:
Note: Final TUNE and LOAD settings will vary with the operating frequency, antenna characteristics and
power level.
1. Reduce transceiver carrier output control to ZERO.
2. Press OPR (operate) on OPR-STBY switch. OPR LED should illuminate.
3. Select the TUNE function of the multimeter bargraph.
4. Switch transceiver to CW and increase its carrier output to approximately 15 W (8100 output
will be approximately 300-500 W).
5. Adjust the TUNE control to deflect the GAIN LED maximum rightward.
6. Adjust the LOAD control to place the illuminated GAIN LED in between the white lines on the
GAIN scale.
7. Repeat steps 5 and 6 at least twice.
8. Increase the excitation power until the 8100 output is about 1500 W.
9. Repeat steps 6 and 7 at least twice.
10. Touch up the TUNE for maximum power output.
11. The ALPHA 8100 is now correctly tuned to deliver 1500 W RF output on SSB, CW, FSK, SSTV
and FM. The GAIN LED normally fluctuates during modulation or keying. Illumination of the first
red LED on the RF OUTPUT bargraph indicates output has exceeded 1500 W. The GAIN LED may
vary during standard opertaion, especially SSB. This is normal.
ALPHA 8100 OPERATING MANUAL
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