[GreenKeys] Alternate Dovetron Adaptor

Mon, 21 Jul 2003 12:43:10 -0400

Geez, and I GAVE away 9 brand new mercury wetted polar relays a few years
ago...  (sigh)
LESU in my KSR still has one.  Never did like putting the loop directly to
the selector.  Put more than a couple of units in the loop and the L
distortion soon made copy difficult with any extra distortion..  Much better
with the polar relays in the circuit.

Gil, W1RG
----- Original Message ----- 
From: "Jack" <[email protected]>
To: <[email protected]>
Sent: Monday, July 21, 2003 11:32 AM
Subject: [GreenKeys] Alternate Dovetron Adaptor

> If anyone has some old TTY polar relays kicking around
> (which seem to be good) you can wire the two coils in
> series, place a 100 OHM resistor in series with them and run them
> right off the MIL188 output of the Dovetron. You will need
> to determine which side of the relay's SPDT contacts
> give you a MARK, and away you go!
>
> Remember, the relays have to be in good shape and
> must be adjusted correctly.
>
> Jack WA2HWJ
>
>
>
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