[Amps] Value of a 8873 w about 1 hour on it?

[Roger]

On 11/28/2011 3:07 PM, Hardy Landskov wrote:
> Speaking of 8873's, anyone know what the cathode driven input Z is at 
> 50 MHz? I am converting an Alpha 76 to 6 meters. The literature is not 
> forthcoming with such info that I have been able to find.

I don't know them off the top of my head, but:
8873, 8874, and 8875 are all the same tube with a different physical 
anode structure with slight differences in dissipation ratings. IE 8873 
is conduction cooled, 8874 is axial, and the 8875 is transverse.

73

Roger (K8RI)

> Hardy N7RT
>
>
> ----- Original Message ----- From: "Roger" <sub1 at rogerhalstead.com>
> To: <amps at contesting.com>
> Sent: Sunday, November 27, 2011 11:03 PM
> Subject: Re: [Amps] Value of a 8873 w about 1 hour on it?
>
>
>> On 11/26/2011 7:41 PM, ko1h wrote:
>>> Hi all, Just trying to get a feel of what the value of an 8873 tube 
>>> almost NOS.  Has about 1 hour of timeon it in a Henry 2kultra.  Sold 
>>> amp still have spare tube.
>>
>> I can't give you any specifics other than they are very rare, no longer
>> made, I don't think many were produced, and probably a small fortune for
>> one in good shape.
>>
>> 73 and good luck,
>>
>> Roger (K8RI)
>>>
>>> Need an idea where to begin.
>>>
>>> Thanks
>>> de John ko1h
>>>
>>> Reply direct if you like
>>> ko1h at cox.net
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>>
>>
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>