Tony,
I agree with Gary. I did Rich Measures' mods on my SB220 over 10 years ago
and it's working beautifully. Quiet and fast and no "hot-switching".
The QSK mod is the best thing you can do to a SB220 or any other old amp for
that matter. It will thank you with many years of excellent service!
Good luck!
73 Bert, VE3OBU
-----Original Message-----
From: amps-admin@contesting.com [mailto:amps-admin@contesting.com]On
Behalf Of Gary Ferdinand W2CS
Sent: Thursday, November 14, 2002 1:35 PM
To: amps@contesting.com
Subject: RE: [Amps] SB220 T/R relay substitution
Tony,
Do the QSK mod anyway. Rich Measures' one is excellent. You don't have to
run QSK when you use it...Just run in VOX mode the way you normally do.
But, I guarantee the relays will be quiet!
Gary W2CS
> -----Original Message-----
> From: amps-admin@contesting.com [mailto:amps-admin@contesting.com]On
> Behalf Of Tony Wanschura
> Sent: Thursday, November 14, 2002 11:07 AM
> To: amps@contesting.com
> Subject: [Amps] SB220 T/R relay substitution
>
>
> I own a Heath SB220 which I have modified and improved in many
> ways over the years, but I have never dealt with the slow, noisy
> T/R relay. Does anyone have any experience substituting a relay
> that is quieter and faster than the original? I know about the
> QSK mods, but I do not want to go that route (I just don't like QSK).
>
> Can anyone recommend a suitable relay? I remember hearing
> somewhere about substituting Matsushita Type "S" or "ST" relays.
> Does anyone know anything about these, and where to get them?
>
> Thanks and 73
>
> Tony
>
>
>
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