[Boatanchors] BA's and 3-wire cords

[Richard Keller]

Ok, I am clear on old AC/DC radios and AM bcst radios as
well as the pitfalls of audio testing, but now I will be
more specific.

I have a Heathkit Laboratory Type Signal Generator LG-1 aka
IG-42 which has a RF filter at the AC input with both sides
of the line having an RFC and .005 bypass cap grounded in
the middle. If  you test either side of the line to chassis
you get 60VAC. How about I remove the caps (leave the
chokes) and then put a 3-wire cord on it with green to
chassis?

73, Dick KF4NS
St. Petersburg, FL 33714 USA
Keep the glow!

----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: "Keith Heitzmann" <kk5fe at charter.net>; "Richard Keller"
<rkeller at ij.net>; <boatanchors at mailman.qth.net>
Sent: Wednesday, January 12, 2005 10:24 AM
Subject: Re: [Boatanchors] BA's and 3-wire cords


| Exception!
|
| If the radio has a metal case you should wire it with
| a 3-wire cord putting the "ground" (green) wire to the
| case.  The case should be isolated from the chassis in
| the original design and adding the ground wire adds
| protection.
|
| Glen, K9STH
|
|
| --- Keith Heitzmann <kk5fe at charter.net> wrote:
|
| I'm sure everyone knows this, but DEFINITELY do not
| use three wire cords on the AC type AM broadcast
| radios.
|
| =====

From: Richard Keller <rkeller at ij.net>
To: boatanchors at mailman.qth.net
Subject: [Boatanchors] BA's and 3-wire cords
Date: Monday, January 10, 2005 5:29 PM

Seems  I remember a thread on the replacement of old 2-wire
AC cords on our old classics. I have done so on my Drake and
Heath ham gear and on one of my VTVM's but the question is
in regard to an old Heathkit SIG GEN from the 1950's which
has a habit of biting me.

Is there any situation when it would not be advisable to use
the 3-wire cord on test equipment or ham gear?
73, Dick KF4NS
St. Petersburg, FL 33714 USA
Keep the glow!