I would not declare tube amplifiers dead until a legal limit, SS
amplifier repeatedly proves itself in serious contest conditions. I'm
not talking about the guy who casually makes 500 search-and-pounce
QSO's. I'm talking about the balls-to-the-walls, SO2R, all-band guy/gal
who operates close to 48 hours, running stations the entire time.
Mistakes happen under these conditions - ooops, forgot to change the
tornado tuner on the 80 when moving from 3700 to 3800, etc. Or, RF from
one amp gets into the other amp and fools it's microprocessor.
The only production SS amp that has come close to proving itself under
there conditions is the SPE line. Even they aren't perfect. See
http://www.3830scores.com/showrumor.php?arg=leadzTgmmcvix . That was an
SPE 2K. In all fairness to SPE, see
http://www.3830scores.com/showrumor.php?arg=lua4zPgqvqmsK . A pair of
SPE 1.3K's that worked flawlessly. (However, not at the legal limit.)
I would love to borrow a pair of these RF-Kit amps and put them to
serious use in one of my SO2R contest efforts.
73,
Steve, N2IC
On 06/04/2017 07:01 AM, Jim Thomson wrote:
Date: Fri, 2 Jun 2017 19:59:34 -0700
From: Mark Mumaw <nu6x@esedona.net>
To: amps@contesting.com
Subject: [Amps] RF2K+ LDMOS linear
<I would like to clear up the information on the RF2K+ by RF-Kit.de in
Germany.
I have tried to join the list but have not been able to get confirmation.
If this message goes through I will followup with another message
answering the questions I have seen here.
BTW, I am not an Agent or Employee of RF-kit.de. I have built several of
these linears and I have volunteered to help with the English version of
the Manual.
Mark NU6X Sedona, AZ
## At $2685.00 to $2985.00 + another $270.00 for shipping + misc parts
= $3255.00
for the amp + tuner, + shipping, raspberry pi3 for the full blown version.
## At that price point, this now spells the end of the tube era. Done,
finished. End of story.
SS 160-6m Auto tune amp, auto tuner, no expensive tubes to buy, super light
weight etc.
## No auto tune tube amp covers HF + 6m. To get HF + 6m from say Alpha,
with 2 of their alpha amps,
you could buy 4 of these SS amps, and have $ left over.
## The ameritron AL-1500 lists for $4295.00 + shipping...doesnt have 6M,
no auto tune, no auto tuner...so its toast.
## alpha 9500 lists for $7995.00 + shipping. No 6m. No auto tuner.
Its now toast.
## alpha 8406 manual tune 6M amp. $4995.00 + shipping. Toast.
## all these current tube amps are now kaputsky. Emtron is already doa.
Eimac has priced themselves into oblivion.
If the chinese stop making tubes, your tube amp will become a door stop. Get
rid of it while you still can. Hats off to the
german folks who have now put the final nail in the coffin of the tube era.
Jim VE7RF
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|