[Amps] Longshot - looking for 8873

[Carl]

Are there any 3CW triodes that would even fit? There are a few small 
tetrodes but rather hard to find.

The only water tubes Ive worked with are the 3CX100A3 with a plumbing pipe 
jacket for use on 1296 and 2304MHz.

The 8072 has possibilities if you want to add a screen and bias supply and 
then just use a BeO block and hardware from the MOTO UHF xcvrs or the 
various HV supplies that used it as a regulator. NOS ones can be found for 
$10-20. The 8560AS are often at hamfests as pulls for next to nothing and 
converting their solid anode to the 8072 should be easy with a copper pipe 
insert. Its one of the tubes Id like to try if a cheap carcass comes along 
since the socket is the same.

Carl
KM1H


----- Original Message ----- 
From: "Ron Youvan" <ka4inm at gmail.com>
To: "amps" <amps at contesting.com>
Sent: Friday, April 06, 2012 6:52 PM
Subject: Re: [Amps] Longshot - looking for 8873


>   Jeff DePolo wrote:
>
>> Anyone know of a working 8873 available anywhere?  Resurrecting an SB-230
>> for a local ARES/RACES group and haven't been able to find one...
>
>   All of this talk of converting them to another tube makes me wonder if 
> this isn't a good
> candidate for a water cooled tube.  They can operate very quietly also.
> -- 
>    73 Ron KA4INM - All E-mail sent to this address shall linger in the 
> Google cloud forever!
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