[Amps] Alpha 9500 Relays Needed

[MU 4CX250B]

Actually, they fit perfectly in the 9500, Tom, in the same location as the
originals. John K1JD and I made the swap in his 9500 one afternoon, because
he likes to run QSK and the Gigavac relays were too slow and noisy for him.
Jim W8ZR

Sent from my iPad

On Nov 23, 2017, at 6:41 AM, Thomas Walsh <w2co at comcast.net> wrote:

The only problem with using other relays is the fact that
they will not fit, the t/r relays in the 9500 are mounted
behind the main ctrlr board up against the bulkhead and
there's no room for any other type. If one tries to
mount relays anywhere else, wires would be required
the length of which will cause wattmeter calibration errors
as well as having the full output of the amp radiating who
knows where inside the amp. Not a good idea. There's a
reason they're mounted where they are.
A couple reasons they fail -1 high swr condx welds the
contacts closed, -2 lightning hits can also weld the contacts,
and -3 the op passed 1kw or more through in stby with high swr condx or not.
Tom
W2CO


Sent from my iPad

On Nov 23, 2017, at 05:55, MU 4CX250B <4cx250b at miamioh.edu> wrote:


Jennings RJ1A or the Kilovac HC1 relays are cheaper, widely available and

make (IMHO) a superior alternative to the G41C in the Alpha 9500. They are

about three times faster, have no contact bounce, and are much quieter.

They mount in grommets and can be swapped for the G41C relays in minutes,

without modifying the amplifier.


I’m curious about what happened to the original relays. What caused them to

fail?

73,

Jim w8zr


Sent from my iPhone


On Nov 23, 2017, at 4:31 AM, gudguyham--- via Amps <amps at contesting.com>

wrote:


Ouch!!


Sent from AOL Mobile Mail


On Thursday, November 23, 2017, Billy McDonald <bmm57 at sbcglobal.net> wrote:


Had to buy two from Gigavac G41C from them and had to pay over $650.00 from

them NEW for a 9500


Billy Mac

AK5DX


-----Original Message-----

From: Amps [mailto:amps-bounces at contesting.com <amps-bounces at contesting.com>
<amps-bounces at contesting.com>]

On Behalf Of David B.

Ritchie

Sent: Wednesday, November 22, 2017 7:03 PM

To: amps at contesting.com

Cc: David B. Ritchie

Subject: [Amps] Alpha 9500 Relays Needed


Anybody have any Gigavac G41C Alpha 9500 relays lying around for sale?

Probably need one - would buy 2 new ones.

David W6DR


David B. Ritchie, Esq.

T: 650-862-6400

E: dbritchie at gmail.com



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