AC power input to Heath gear.

[Gary H. Harmon Jr.]

My suggestion would be to maintain the integrity of the original
construction by doing the following:  Remove the original socket (2 or 3
pin) and replace it with a piece of aluminum mounted inside the receiver
with the same hardware.  Drill an appropriate hole in the new piece to
accommodate whatever kind of new cable you have.  Use a suitable strain
relief if necessary.  Connect the 3 wires inside.  Tape the original socket
inside the set for reuse if an original cable is obtained.  Originality is
good!

73, gary

=========////////=========
Gary H. Harmon, Jr. - K5JWK
6003 Archwood
San Antonio, TX 78239-1504
210.657.1549 home
210.884.6926 cell
gharmon at idworld.net
"Veritas vos Liberabit"


-----Original Message-----
From: Heathkit Owners and Collectors List [mailto:HEATH at LISTSERV.TEMPE.GOV]
On Behalf Of Donley
Sent: Monday, April 17, 2006 8:28 PM
To: HEATH at LISTSERV.TEMPE.GOV
Subject: [HEATH-TEMPE] AC power input to Heath gear.

This is a general request to the experts on the list.

Many Heath transmitters and receivers (SB-300 and 400 Series included) have 
two-wire power cords as do many other vintage sets from the tube era. It is 
my plan to replace those with a three-wire grounded power cord. I guess I am

not concerned about lowering the value of the equipment but more interested 
in safety. On the Heath equipment, would you replace the cheater-cord style 
connection with a three-wire plug or would you leave it there and just add 
another hole for a new power cord? On the Hallicrafters equipment, I can 
just replace the cord.

Secondly, there is typically a capacitor connected from each side of the 
line cord to ground. These capacitors very typically from 0.001 to 0.047 
microfarads. I have never failed to receive a slight "bite" every time I get

between this type of system and any other system that is grounded. I know 
that these capacitors should have a high capacitive reactance (and very low 
leakage) at 60 Hertz, but what other purpose do they serve and why the large

discrepancy in value? I have seen a few systems that eliminate the caps 
altogether and have read some restorers accounts where the first thing they 
do is remove them. What are the recommendations?

Dick
KC9UB



----- Original Message ----- 
From: "HEATH automatic digest system" <LISTSERV at LISTSERV.TEMPE.GOV>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Wednesday, April 05, 2006 3:00 AM
Subject: HEATH Digest - 3 Apr 2006 to 4 Apr 2006 (#2006-89)

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