[Amps] 813 Amplifier Article

[Carl]

4CW600A


----- Original Message ----- 
From: "Diane & Edward Swynar" <deswynar at xplornet.ca>
To: "Rob Atkinson" <ranchorobbo at gmail.com>; <amps at contesting.com>
Sent: Thursday, March 31, 2011 1:03 PM
Subject: Re: [Amps] 813 Amplifier Article


> Hi Rob,
>
> D'you want RARE...?
>
> How about those Eimac water-cooled tubes that were used in mobile linear
> amplifier designs by Bill Orr in the late 50's/early 60's...?!
>
> I believe their type designations were prefixed by the letter "W"...
>
> ~73~ de Eddy VE3CUI - VE3XZ
>
>
> *******************************************
>
>
> ---- Original Message -----
> From: "Rob Atkinson" <ranchorobbo at gmail.com>
> To: <amps at contesting.com>
> Sent: Thursday, March 31, 2011 10:47 AM
> Subject: Re: [Amps] 813 Amplifier Article
>
>
>> Glad to hear it.  I had thought 5-125 was almost unobtanium; even
>> harder to find than 5-500s and 4-65As.
>>
>> The only ham rig I have ever heard of, that used the 5-125 was the
>> Eldico TR-1TV which used one for the PA.  Few of them survive--as far
>> as I know there are four or five hams running that rig.
>>
>>
>> 73
>>
>> Rob
>> K5UJ
>>
>>
>> <<<I notice 4E27A's being ignored on Fleabay and at hamfests. My only
>> experience with them was a couple of 6M AM rigs I built to get some
> activity
>> on the band. They sure did glow nice.
>>
>> The H&K 257B is a 4E27 clone.
>>
>> If you dont want bands above 20M a couple of 803's can really make some
>> power and will take the same socket as the various Eimac 4- and 5- 
>> triodes
>> and tetrodes.
>>
>> The 814/VT-154 is a scaled down 813 and generally ignored but 3-4 will be
>> heard.
>>
>> Carl
>> KM1H
>>
>> >>>
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>
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