>Subject: [AMPS] SB-220 Mod
>Sent: 3/27/1997 12:47 AM
>Received: 3/27/1997 2:39 AM
>From: Terry Gaiser, W6TG@aol.com
>To: amps@contesting.com
>
>In a message dated 97-03-26 23:48:51 EST, you write:
>
><< Who sells that vaccummmm relay mod for the SB220??
>
> --
> 73 Robert W5AJ w5robert@blkbox.com
> WB5CRG, VK5CRG, WB5CRG/VP2M & VP2E & WN5CRG !
> >>
>
>I don't know of anyone selling a kit, maybe someone on the reflector knows.
There is a circuit in "The Nearly Perfect Amp[ifier" in the 1/94 issue of
QST. The switching speed is about 1.9mS. Also see Figure 7B at:
http://www.vcnet.com/measures
You can buy the RJ-1A (RF output) relay from Fair Radio Sales
419-227-6573 for about $35. We sell a parts kit that includes the
Matsushita RSD-12v reed-relay (for RF input switch), the resistors/caps
and solid-state parts for $20.
R. L. Measures, [805]386-3734
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