The mod AMERITRON made will help a lot
because the finals DIE of high reverse tension
this is solved with the placement off the Caps
at that place.
One other thing you can do is reducing the voltage on the finals
they put about 65 volts (no signal) on it and thats much to high
normal it should be MAX 50 volt
I build a regulation for it and now the voltage is 45 volt stable
lost some 50 watt with this mod but that doesn't matter.
I did do several very bad tests with the amp but couldn't blow
them up anymore.
btw your ts450 can't blow them up it's a fault in the design
found this out when I repaired mine and the one MARK EL2WW
was using and still is working at EL2RF I heard.
Guy ON4AOI
DX4WIN soft and related stuff at
http://www.ping.be/on4aoi/dx4win.shtml
DX4WIN, WRITELOG, WF1B & RITTY CW & RTTY interfaces at
http://www.ping.be/on4aoi/keyer.shtml
YAESU SOFT & AUTOMATIC BANDDATA CONTROL at
http://www.ping.be/on4aoi/yaesu.shtml
MY SALESPAGE with radioamateur & computer parts
http://www.ping.be/on4aoi/sale.shtml
----- Original Message -----
From: Lee Roberts <ki7rw@arrl.net>
To: <amps@contesting.com>
Sent: Monday, February 14, 2000 3:20 AM
Subject: [AMPS] Ameritron ALS600
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> I was wondering if there is a "sure-fire" mod for the ALS600 so that my
> Kenwood TS450 won't destroy the finals. According to Ameritron, the
Kenwood
> generates a full power spike at key-up which eventually blows the finals
> (Kenwood doesn't acknowledge this, of course). I sent the amp in to
> Ameritron 4 times during the 1 year warranty to have the finals replaced.
> It would have cost me about $260 (labor not included) each time to have it
> repaired outside of the warranty. Ameritron installed a mod (capacitors
> were added) that supposedly fixes the problem but since the amp is out of
> warranty I'm "afraid" of blowing it up again. The amp works great
> otherwise. I can't afford to replace finals every couple of months and
it's
> a real pain to have it fail in the middle of a QSO (especially during a
> contest).
>
> 73
>
> -----BEGIN PGP SIGNATURE-----
> Version: PGP Personal Privacy 6.0.2
> Comment: No, I'm not paranoid!
>
> iQA/AwUBOKd0aowoPKBUx8xQEQJ6CACgslLYXoxalW7gafHG5yHmnO1DbrYAoLj+
> KlZyxTS9ixdJN+FfYaA620hg
> =X9Ee
> -----END PGP SIGNATURE-----
>
>
> --
> FAQ on WWW: http://www.contesting.com/ampsfaq.html
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
>
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|