[AMPS] maximum output from an Alpha 89

[Robert W5AJ]

My thoughts on testing them at home:
(I believe you are talking about 3cx800's)

1.  Document tube date stamp & serial number for future.
2.  Test the tube - one at a time.
3.  I do mine into a dummy load with a external wattmeter.
4.  Remember, one tube less drive....
5.  Document test results per tube serial # (in amp manual?).
6.  Always get the HV to zero before you touch the plate cap.
I short mine to ground before I touch - also watch the HV meter.
(safety disclaimers...)  After a test they are also HOT.
7.  While testing monitor the grid current carefully with the 3cx800's, too
much
and you will no longer have a tube.
8.  To repeat:  DOCUMENT your test per tube serial number and write it
down!
and date it.
See the ARRL handbook or the tube specification sheet for typical plate
loading
and output.
73  Robert

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