Ehrhorn Technological Operations ALPHA 86, Руководство по эксплуатации и техническому обслуживанию

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Tune Up For 1,500 Watts Output
1) All initial control settings must match those in Table 1, page 12. Set BAND, TUNE, and LOAD
controls to their proper positions. The final settings will vary somewhat with operating frequency,
antenna characteristics, and drive level.
2) Reduce transceiver carrier output control to ZERO.
3) Depress HI on HI-LO switch
4) Depress OPR on OPR-STBY switch. The OPR LED should light.
5) Select TUNE function on multimeter bargraph.
IF AT ANY TIME IN THE FOLLOWING PROCEDURE THE AMPLIFIER FAILS TO RESPOND AS
DESCRIBED, REMOVE DRIVE IMMEDIATELY!
6) Switch transceiver to "tune" or CW "lock-key" and increase its carrier output until the RF OUTPUT
bargraph indicates approximately 500 watts.
7) Adjust TUNE control to deflect TUNE LED maximum left.
8) Adjust LOAD control to center the illuminated LED.
9) Repeat steps 7 and 8 above.
10) Increase transceiver output until
ALPHA 86
output is 1,000 watts.
11) Adjust TUNE to deflect TUNE LED maximum left.
12) Adjust LOAD to illuminate center LED.
13) Repeat steps 11 and 12.
14) Increase transceiver output until
ALPHA 86
output is 1,500 watts.
15) Touch up TUNE for maximum power output.
NOTE: Illumination of the first red LED on the RF OUTPUT bargraph indicates output has exceeded
1,500 watts.
The
ALPHA 86
is now correctly tuned for approximately 1,500 watts output on SSB, CW, FSK, SSTV,
and FM. On AM, decrease exciter carrier output until the
ALPHA 86
output drops to 375 watts.
Reduced Power Operation (800-1000 Watt Nominal Output)
1) Set the BANDswitch, TUNE, and LOAD control to initial settings.
2) Reduce transceiver carrier output to zero.
3) Depress LO on HI-LO switch.
4) Depress OPR on OPR/STBY switch. The OPR LED should light.
5) Select TUNE function on multimeter bargraph.
6) Switch transceiver to "tune" or CW "lock-key" and increase its carrier output until the RF OUTPUT
bargraph indicates approximately 500 watts.
7) Adjust TUNE control to deflect TUNE LED maximum left.
8) Adjust LOAD control to illuminate center LED.
9) Increase transceiver output until
ALPHA 86
output is 800-1000 watts.
10) Repeat steps 7 and 8.
The
ALPHA 86
is now correctly tuned for reduced output.
When operating at high (1,500 watt)
or
low (800 watt) powers it is normal for the TUNE LED to shift
slightly left or right of center under voice modulation or keying.
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