Heathkit HP-23 Power Supplies

[Brian Wood]

HP-10: DC for mobile use with the HR-20 and HX-20.

HP-13A, B: DC for mobile use with HW-12, 22 and 32. Specs same as HP-23A and
HP-23B. 13B has no bias control.

HP-14: DC for mobile use for the KW Kompact.

HP-24: AC version of the HP-14, for use with the KW Kompact.

HP-20: AC for fixed station use, replaced the UT-1, for use with MT-1 and
MR-1 (Cheyenne and Comanche)

HP-23, A, B, C: AC for fixed station use with SB and HW rigs:
	Pin #		HP-23, 23A		HP23B, 23C
	  1		fixed bias		fixed bias
	  2		fil common		fil common
	  3		low voltage		low voltage
	  4		high voltage	high voltage
	  5		nc			nc
	  6		12V filament	12V filament
	  7		ground		ground
	  8		6V filament		nc
	  9		ac switch		ac switch
	 10		ac switch		ac switch
	 11		adj bias		nc

HP-23 has choice of 250V/300V during construction, can't be operated on
240VAC, others can.
HP-23A provides choice of 250V/300V in on/off switch
HP-23B provides choice of 250V/300V in on/off switch, and see bias and
filament differences in chart above
HP-23C has choice of 250V/300V during construction, and see bias and
filament differences in chart above

HP-23C was renamed PS-23 when Hewlett-Packard objected to model numbers with
an "HP" in them.

The above data comes from "Heathkit: A Guide to the Amateur Radio Products",
2nd edition, by Chuck Penson, WA7ZZE. ISBN: 0-943016-23-1, published by CQ
Communications, Inc. I highly recommend this book for all Heathkit
aficionados.

73,
Brian, W0DZ


-----Original Message-----
From: Heathkit Owners and Collectors List [mailto:HEATH at LISTS.TEMPE.GOV] On
Behalf Of RONALD SLATER
Sent: Tuesday, April 28, 2009 03:00
To: HEATH at LISTS.TEMPE.GOV
Subject: [HEATH-TEMPE] Heathkit HP-23 Power Supplies

Heathkit offered a series of these supplies..HP-23 A,B,C.  What's the
difference?..Ron

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