[Amps] 4cx1600b VS GU-84B

["Thomas Hix" <w4th@hotmail.com>]

Will Said.....

=============================================================
Tom,

Doing a Google search, I found several pages refering to the GU-84B as a
GU84B/4CX1600 just then, and then also seen some refering to it as a 
4CX2500.
The very first hits I list below;

http://www.nd2x.net/OH3AWW.html
GU-84b/4CX1600b PA design
144MHz 1.5KW GU-84b Linear Amplifier Matti Vilppula, OH3AWW, 2003. During 
the
summer 1997 I completed my new GU-84b tetrode power amplifier. ...
www.nd2x.net/OH3AWW.html - 29k - Cached - Similar pages
[ More results from www.nd2x.net ]


and;

http://oh3tr.ele.tut.fi/~oh3aww/pa_gu84b/pa_gu84b.htm
OH3AWW:n GU-84b/4CX1600b 144 MHz lineaarinen
144 MHz 1.5 kW GU-84b lineaarinen. Kesällä 1997 sain venäläisellä tetrodilla
GU-84b tekemäni vahvistimen valmiiksi. Niin tai ainakin toimintakuntoon ...
oh3tr.ele.tut.fi/~oh3aww/pa_gu84b/pa_gu84b.htm



Then for calling it a 4CX2500A;

http://www.classifiedbuyers.com/1036deItemDetail.asp?AdID=33347&BuySell=2&id=
ClassifiedBuyers - FREE Classified Ads - No Fraud, No Upfront Fees ...
GU-84B/4CX2500A Svetlana. Brand New! The Sockets are sale also. ... The 
GU-84B
is a ceramic-metal forced-air cooled tetrode intended for use in power ...
www.classifiedbuyers.com/1036deItemDetail. asp?AdID=33347&BuySell=2&id=

and;

http://xoomer.virgilio.it/atpaolo/4cx2500.htm
CX2500 - [ Translate this page ]
Tubo utilizzato, n°1 4CX2500 / GU-84B. Commutazione, relays sotto vuoto alta
velocità. Alimentazione, 220 / 240 volt - 3 kw. Dimensioni sezione RF (in 
mm)
...
xoomer.virgilio.it/atpaolo/4cx2500.htm


So, which one is it? Emtron says it's has a 2500 watt dissapation but does 
not
call it a 4CX2500. It sounds like some wants to call it one thing and others
something else.

Best,

Will

=============================================================
As I said before......The GU-84B and the 4cx1600B are entirely 
different......the GU-84B is a much larger tube in size, weight and output.
I dont know where these guys come up with the GU-84B being the same as a 
4cx2500.....Is there such a tube as the 4cx2500????? I dont think I have 
ever seen one.....they may well exists, but I do not know of them.......so I 
think when the guys from Europe were trying to find a tube which was 
comparable to the GU-84B so they came up with the 4cx2500.....but as I 
said......I dont know if such a tube as the 4cx2500 exists........I think 
they used the 4cx2500 because a GU-84B can give you about 2500 watts out 
with 100 watts drive and a 2300 volt transformer.
But I stand by my statement that the 4cx1600b and the GU-84B are no where 
near the same tube. Compare the specs between the two of them and you will 
see what I mean.

73

Tom....w4th


Tom's Tubes: Amateur Radio Amp Tubes & Sockets, CTHRD Hand Made CW Keys, 
K4POZ Screwdriver Antennas & G3SEK Triode/Tetrode Boards & Kits. 
http://www.tomstubes.com


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