I replaced the T/R relay in my Triton 540 with a high-voltage NPN
transistor. I believe it is a 2N5551. The collector is open to the T/R
line in the event I want to use an external amp. The transistor's base is
connected to Ten-Tec's "T" voltage sample point via a 10K resistor. This
results in a fully QSK compatible output for use with any QSK amplifier.
-Paul, W9AC
----- Original Message -----
From: "Robert Jewell" <ac9r@comcast.net>
To: <tentec@contesting.com>
Sent: Saturday, September 13, 2003 11:20 AM
Subject: [TenTec] Triton 540
> Does anyone know of an easy way to turn off the mute relay in a 540, since
> it does not control any internal functions. I hate clanking relays. I
> could "clip" R-13, or clip the 12 vdc lead to the coil of K-1, but
wondered
> if there isn't an easier way. I am technically competent!
>
> Also I "hear" what appears to be another relay operating at "code speed"
> with each dot and dash. I thought this was all solid state T/R like the
> Argonaut 515. I've heard it described as "almost" a 515 with an amp.
>
> It's an excellent radio, a recent Ebay purchase, and I haven't opened the
> case yet. I've had a 515 for about a month and absolutely love it. I
> intend to operate the 540 as a qrp rig also.
>
> I am "downsizing" as I grow old, and recently sold my Omni VI-Plus will
all
> of the cw filters, and intend to go qrp only from here on out.
>
> 73, AC9R
>
>
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