I use the SB220 with various Ten-Tecs. Here is my experience:
I set the drop-out delay in the rigs to the longest hold time. Then I just
key the rig and operate normally. While the amplifier is in transmit mode,
the received signal levels are lower BUT so is the noise. This makes for
very comfortable listening and gives plenty of received signal for QSK.
My SB220 has all the Harbach mods. Money well spent.
73, Mike N4NT
----- Original Message -----
From: "Mark Erbaugh" <mark@microenh.com>
To: <tentec@contesting.com>
Sent: Thursday, August 28, 2003 9:05 AM
Subject: [TenTec] SB220 and Omni VI
> I've given in to the declining propagation and purchased my first amp. I
> picked up a nice Heathkit SB220 to help my Omni VI (opt 3). The SB220 has
> the Harbach SoftKey mod installed which I'm told allows most rigs to
> directly key the amp (i.e. very low voltage / current required, unlike the
> stock SB220).
>
> I'm looking for any tips / precautions / etc that someone might have on
> operating the SB220 and the Omni together.
>
> I know that the SB220 is not designed for QSK and I wonder what happens
when
> I use the Omni's T/R relay to drive the SB220's T/R input in CW. I'm sure
> the amp won't keep up, and I won't receive in between elements, but will
the
> rapid toggling of the T/R input harm the amp? Should I wire up a Tx/Rx
> switch that holds the amp in transmit mode and manually switch between Tx
> and Rx in CW?
>
> 73,
> Mark
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