[Boatanchors] 5AR4/GZ34

[R.J. Mattson]

Thanks Eric,
Do you have a web site? I've saved your e-address for quotes.
This GZ34 rectifier is used in a 90w cw xmtr (EICO 720)
Many xmtrs in this power class (6146) use a 5U4xxx class rectifier. After
you mentioned size, I now believe it is the height in this application. The
EICO 720 xmtr is quite a trim unit and the economic 5U4 must be to tall. I
am going to look through my vast 5U4 collection and see if I have a squat
model first hi.
Bob Mattson...W2AMI
http://www.qrz.com/callsign/w2ami

----- Original Message -----
From: "third Eric" <ejones@hiwaay.net>
To: <boatanchors@mailman.qth.net>
Sent: Saturday, December 28, 2002 1:43 PM
Subject: [Boatanchors] 5AR4/GZ34


de N4TGC Eric

There's an archive somewhere that covers all this, but here's the synopsis:
For MOST applications, there is little difference in any of the full-wave
rectifiers: 5AR4, 5AS4, 5AU4, 5DJ4, 5U4, 5V3, 5V4, 5Y3, 5Y4, 5Z3, 5Z4, etc.
There are minor variations in exact basing, in that some numbers tie to
more pins than others, and larger tubes (5U4) handle more current than
smaller ones (5Y3), but that's about it.

The 5AR4/GZ34 (not substitutes; they are the same tube) is only unusual in
that it's a higher-current tube in a small, 5Y3-sized envelope, which can
limit what will physically fit as a replacement.

So the question becomes not, "what substitutes for the GZ34", since almost
anything might could, but "how, exactly, is it being used?", i.e., current
load, voltage impressed/spiked, available cooling, clearance, etc.

In any case, I have over 100 rectifiers in stock, including the GZ34,
NOSIB.  I sell new ones less that A.E.S., and guaranteed used ones for half
- or less, in quantity. e


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