Fixing one of these up, had a blown LDMOS FET now
ok on CW, but SSB trips a lot of error protect faults related to I think the
peak power during modulation input to the amp.
?
It claims > 25W is what brings it into protect and my Kenwood 930S
trips it in SSB no matter how low the output is. My KW 850S has better
Carrier and FR out controls, so I can bring it down much lower and it
seems to be ok with that rigg.
?
This is running on 110V hookup, I get about 450W CW carrier,
and most I can see on the average analog power meter is like 200W
and thats almost full bars on the amps power bar meter on the front?
panel, so I am left to believe this is its intended operation without using ALC?
?
The owner of the amp uses an ICOM 706MK2 with no ALC on the AMP, but I believe
it does have an ALC output.
?
I have never ran an amp with the ALC from the rigg, but its suppose to I guess
limit the spikes I am seeing which also reduces the buckshot side splatter from the
inherent IMD they produce?
?
--
Steve Hearns [ KA2PTE ]
Technotronic Dimensions, VT [USA]
E-Mail:
Steve@...?
?
?
Bob