[TenTec] Corsair 560 low power output

[Mike Bryce]

without having the radio in front of me, and from what you described, it sounds like perhaps you have a failed PA transistor or two.

Could also be several other issues, too. 
The low pass filters are switched in with a segment of the band switch, there are no relays in that rig to go bad.

The ssb might indicate that the finals (or drivers) have went and/or the bias circuit is acting up.

Operating with bad/missing/out of whack bias would cause the ‘almost out of tune’ condition.

Mike, WB8VGE

Mike Bryce, WB8VGE
 the heathkit shop
SunLight energy systems
J e e p
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> On Jan 26, 2017, at 3:39 PM, C Brosh <akgnomad at gmail.com> wrote:
> 
> Good afternoon-I have a Corsair 560, the first model, with some odd issues.
> The overall power output is low and varies by band, 160 is close to 0 and
> 12 meters is the best at 25 watts out, with other bands between 5 and 10,
> without much rhyme or reason to what band. Ic on the meter shows as about 5
> amps on 12, shows a range 0f 9 amps to almost nothing on other bands, and
> more power in doesn't not translate into more power out. It acts like the
> finals are out of tune, but looking at the final board, the low pass filter
> board and bandpass boards I don't see what could be tuned or adjusted in
> those circuits.
> 
> Also, received audio in SSB sounds wierd, almost like it's always just a
> bit out of tune, and kind of raspy.
> 
> My power supply is capable of 20 amps, and I have tried another supply with
> the same results. Thanks in advance for ideas or suggestions.
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