[Boatanchors] 1625 tube, 807, 837

[Glen Zook]

>From the P&H Electronics advertisement on page 144 of
the November 1960 issue of QST:

NEW modern styling!  NEW high efficiency 3 element
band-switching pi net.  Puts more power into any
antenna or load from 50-70 ohms.  For SSB, DSB, Linear
AM, PM, CW and FSK.  All bands 80-10 meters.  May be
driven to 800 WATTS PEP with popular 100 watt SSB
exciters.  Uses four modified 1625's in grounded grid.
 On customers order, will be furnished with 837's. 
(note:  1625's and 837's are not directly
interchangeable, since sockets are different.) 
Typical P&H Low Z untuned input.  TVI suppressed. 
Parasitic Free.  Meter reads grid drive, plate
current, RF amps output.  Heavy duty power supply
using 816's.  NEW modernistic grey cabinet measures
approx. 9" x 15" x 10 1/2".  Panel is recessed.  WANT
TO SAVE OONEY?  BUY IT IN KIT FORM.  It's a breeze to
assemble and wire.  BEFORE YOR BUY - SEE THE NEW
LA-400 AT YOUR DEALERS.

P&H was out of Lafayette, Indiana (Purdue University
is in West Lafayette).

The 837 was definitely used in linear amplifiers in
place of the modified 1625s.

Also, the punctuation, spelling, etc., in the above
quotation is exactly from the advertisement although
they did violate some rules of English writing!

Glen, K9STH


--- Mark Foltarz <Foltarz at rocketmail.com> wrote:

I don't think it was the 837 however. 
 
I recently had to look up specs on the 837 for a TBW
transmitter I put on the air. 
 
I was suprised to see how weak the 837 is compared to
the 807 - much less power from a 837.


=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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