[R-390] Positive ground (slightly off topic)

Tue, 3 Sep 2002 00:39:48 -0500

These days, it is easier to isolate the DC. You could even do 6 volts
in and 12 volts out, if the "vintage" goes back that far. Then you can
ground the radio the way it was intended to be grounded.

Don't think a DC-DC converter is going to make much noise next to a
vintage electrical system.

Regards,
Bill Hawkins

Sure is dry here on the list ...

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of AI2Q Alex
Sent: Monday, September 02, 2002 3:50 PM
To: R-390 (E-mail)
Subject: [R-390] Positive ground (slightly off topic)

Hello all:

Given the pool of technical knowledge on this list, I wonder if anyone can
suggest a way to feed a typical HF mobile whip antenna (center loaded, with
low-Z feedpoint) in an installation where the car's electrical system uses a
positive ground.

I tried feeding a Hustler whip through a homemade toroidal coupling
transformer in order to achieve DC isolation, but my transformer seems
inadequate to achieve adequate coupling. I'm not interested in reversing the
vintage car's system polarity. The transceiver is an Atlas-210X.

Any thoughts?

Vy 73, AI2Q, Alex   .-.-.

_______________________________________________
R-390 mailing list
[email protected]
http://mailman.qth.net/mailman/listinfo/r-390