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Today's Topics:
1. Nitpicking (WT2P - CJ Johnson)
2. Re: W6PQL Designs (Ken K6MR)
3. Re: Ham Tests, was Price per Watt Conversation (Bill Turner)
4. Re: Nitpicking (Bill Turner)
----------------------------------------------------------------------
Message: 1
Date: Fri, 28 Apr 2017 23:34:04 -0500
From: WT2P - CJ Johnson <fredwt2p@gmail.com>
To: Chas Hamilton <schuetzen@gmail.com>, amps@contesting.com
Subject: [Amps] Nitpicking
Message-ID: <bd6b3931-bf62-c153-b46d-254eabbafe96@gmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed
Well, I sincerely apologize for offending you because I forgot to change
the digest label. Anything else you care to nitpick about?
And you people wonder why us younger hams don't want to continue in this
hobby. A bunch of old people just constantly b***ing and nitpicking at
each other now.
73 and Good Luck. Hope you enjoy projecting your manhood on internet
reflectors and on 40/75M.
WT2P
On 4/28/2017 11:13 PM, Chas Hamilton wrote:
Not a moderator of this list but Netiquette rules say to
Never use the digest label as a message title and
To change the thread subject line to something germane if you introduce a new
subject.
Ok list owner- kick me for doing your job.
Sent from my iPhone 6s+
On Apr 28, 2017, at 22:36, WT2P - CJ Johnson <fredwt2p@gmail.com> wrote:
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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------------------------------
Message: 2
Date: Sat, 29 Apr 2017 04:51:52 +0000
From: Ken K6MR <k6mr@outlook.com>
To: WT2P - CJ Johnson <fredwt2p@gmail.com>, "amps@contesting.com"
<amps@contesting.com>
Subject: Re: [Amps] W6PQL Designs
Message-ID:
<CY4PR13MB125498B42F2C2FA2BD3E1D3D9E120@CY4PR13MB1254.namprd13.prod.outlook.com>
Content-Type: text/plain; charset="Windows-1252"
Yes. I have two KPA500s. I use the splitter to drive both of them on the same
band, and the combiner to put the two outputs back together. I also have a set
of relays that switch the assembly between the two K3s. I have an Arduino that
handles switching band data, keyline, etc.. It uses the Tx Focus from the u2R
to make the amps follow the active radio. The amps are in the closet, I just
watch them using the Elecraft remote programs. Ditto for the tuners, one per
radio.
All of my antennas are fine on cw/rtty, but the 80m antennas get squirrely
above 3650. I hardly ever operate phone so it doesn?t affect me. The tuners
will make them tolerable up to 3750 or so. The KAT500s are good to 1000W at
3:1. Good enough for me.
As long as the tuner will handle it, the feedline losses are so low on 80 that
it?s not worth changing anything. 3 or 4 to 1 isn?t going to break anything
even at 1500W with normal sized coax.
Ken K6MR
From: WT2P - CJ Johnson<mailto:fredwt2p@gmail.com>
Sent: Friday, April 28, 2017 9:18 PM
To: k6mr@outlook.com<mailto:k6mr@outlook.com>;
amps@contesting.com<mailto:amps@contesting.com>
Subject: Re: [Amps] W6PQL Designs
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@gmail.com>
Sent: Friday, April 28, 2017 8:37 PM
To: amps@contesting.com<mailto:amps@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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Amps@contesting.com<mailto:Amps@contesting.com>
http://lists.contesting.com/mailman/listinfo/amps
------------------------------
Message: 3
Date: Sat, 29 Apr 2017 04:56:46 +0000
From: Bill Turner <dezrat@outlook.com>
To: Amps group <amps@contesting.com>
Subject: Re: [Amps] Ham Tests, was Price per Watt Conversation
Message-ID:
<CY1PR0301MB11964E6BDF2C765693261172C0120@CY1PR0301MB1196.namprd03.prod.outlook.com>
Content-Type: text/plain; charset="us-ascii"
------------ ORIGINAL MESSAGE ------------(may be snipped)
On Fri, 28 Apr 2017 20:07:52 -0700, Jim wrote:
## at least with a 3-500Z amp, you can shovel anything into it. Like
3-500Z, 3-400Z, 4-400A, 4-400B, 4-400C. I have used all 5 of those
tubes. Phillips 8163 will also work. A 3CX-1200 A7 + D7 will also
plug right into those sockets. A 3CX-1200Z7 will also work.
REPLY:
My point exactly, replacement variations will be available for a long
time.
I do agree about certain parts like CPUs. If you can't get the
original you are probably out of luck. Of course that is true for
either tube or SS.
As to your friend's Hercules, I'd like to give it a shot. Please give
him my email address and ask what he wants for it. Thanks.
73, Bill W6WRT
dezrat@outlook.com
------------------------------
Message: 4
Date: Sat, 29 Apr 2017 05:03:25 +0000
From: Bill Turner <dezrat@outlook.com>
To: Amps group <amps@contesting.com>
Subject: Re: [Amps] Nitpicking
Message-ID:
<CY1PR0301MB11963C7DC0946A25A6CAA3D6C0120@CY1PR0301MB1196.namprd03.prod.outlook.com>
Content-Type: text/plain; charset="us-ascii"
------------ ORIGINAL MESSAGE ------------(may be snipped)
On Fri, 28 Apr 2017 23:34:04 -0500, WT2P wrote:
Well, I sincerely apologize for offending you because I forgot to change
the digest label. Anything else you care to nitpick about?
REPLY:
That' snot a nitpick. That "rule" about changing digest subject lines
was established long ago for good reason.
73, Bill W6WRT
------------------------------
Subject: Digest Footer
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------------------------------
End of Amps Digest, Vol 172, Issue 94
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