[Amps] W6PQL Designs

[WT2P - CJ Johnson]

Ken-

Did you get the Combiner/Split for an existing amp?

I'm looking at obviously not duplicating the 4O3A design in SO2R amps, 
and have been resigned to the fact that i'll probably operate two amps 
for SO2R... but I am looking at building at least *one* amp that is SS 
for my shack. That is the pinnacle here, of finally operating an amp 
that performs well in a contest and being able to say "I built/assembled 
it myself". And being able to troubleshoot any faults that may occur.

There's been a lot of talk about LDMOS amps, and I'm genuinely 
curious... I have resonant ants for 40/20, but on 80, my seasonal 
antenna is fairly resonant but narrow bandwidth (3.5-3.68) before the 
SWR jumps. I've seen some videos of the LDMOS variant amps taking a 3:1 
rating (obviously not at RTTY levels) but it has piqued my interest. 
Even my 76PA has "appeared" to tolerate my momentary excursions up to 
75M, but I know that the reflected power is just eating away at the 
tubes. Probably even more so with transistors.

I know the answer is to get resonant antennas, which I have done.. I'm 
impressed with my Alpha 76PA in the fact that it has dealt with me at 
3AM mistuning the thing and it still works like a racehorse.

On 4/28/2017 11:00 PM, Ken K6MR wrote:
>
> I bought the combiner/splitter assemblies made by W6PQL for my dual 
> KPA500 project. High quality boards and they work great. The amp 
> pallets look like they are the same high quality.  I’m just too lazy 
> to take on a project like that.
>
> He did an update on the filter design that has better harmonic 
> suppression for the high power model.
>
> Ken K6MR
>
> *From: *WT2P - CJ Johnson <mailto:fredwt2p at gmail.com>
> *Sent: *Friday, April 28, 2017 8:37 PM
> *To: *amps at contesting.com <mailto:amps at contesting.com>
> *Subject: *Re: [Amps] Amps Digest, Vol 172, Issue 92
>
> Can we get back to the topic(s) at hand, namely building/repairing amps?
> I, for one, am very curious about the new SS amp line(s) coming out and
> researching as much as I can about the W6PQL designs and would like to
> hear more about the merits of that design and some advice for budding
> builders who want to experiment along that path.
>
> Or is this going to devolve into an online version of 7.200?
>
>
> Thanks,
> WT2P
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