On Oct 30, 2005, at 9:18 AM, Vic K2VCO wrote:
> rich wrote:
>
>> To increase the output of a TS-850S,
>> operate it at the rated max of 16VDC and adj. the internal ALC
>> control for what u need. I have been operating my 850 from 16V for
>> over a year without a problem. With 16V in an 850 should be capable
>> of 150W out.
>
> Keep in mind (I'm sure Rich knows this,
Correct
> but others might not) that just
> turning up the ALC pot on the 850 without increasing the voltage can
> also produce 150 or more watts...with a huge increase in IMD.
Amen, Vic, without enough headroom, C-E potential drops and IMD flops.
Since the transistors are rated at 18v, 16v should be gud
> I did
> this once (on CW, where IMD is irrelevant) for an amp that needed a
> little extra drive. But I wouldn't do it on a voice mode (if I ever
> operated AM/SSB, which I don't).
>
> Maybe increasing the voltage isn't harmful to the health of the rig and
> maybe the signal quality would be OK in that case. It's worth doing
> the
> two-tone test before and after to be sure.
The adjacent splatter test with another receiver using voice modulation
gives a real-world assessment.
>
> --
> 73,
> Vic, K2VCO
> Fresno CA
> http://www.qsl.net/k2vco
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>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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