[AMRadio] Re: [Boatanchors] 1625 tube, 807, 837


Mark Foltarz Foltarz at rocketmail.com
Sat Oct 9 08:03:55 EDT 2004


Thats the problem with this hobby. It cost too much OONEY...
HI

Mark


--- Glen Zook <gzook at yahoo.com> wrote:

> 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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