[Amps] TV sweep tubes and 6146s

[R.Measures]

On Aug 10, 2005, at 6:16 AM, Dr. William J. Schmidt, II wrote:

> I would think that using surplus tubes in the same basic price class 
> (813's,
> 572B's, or 811A's), you would get a much higher "watt per dollar" 
> return.

The best watts per dollar tube is seemingly the 8171.  They go for c. 
$200 on eBay.  That figures out to c. 12-cents per watt, including 
shipping.
>
> Sincerely,
>
> Dr. William J. Schmidt, II  K9HZ
> Trustee of the North American QRO - Central Division Club - K9ZC
>
> Email: bill at wjschmidt.com
> WebPage: www.wjschmidt.com
>
> "If computers get too powerful, we can organize them into a committee; 
> that
> will do them in."  -- Bradley's Bromide
>
>
> ----- Original Message -----
> From: "Tom Bowman" <wa3rey at comcast.net>
> To: <amps at contesting.com>
> Sent: Wednesday, August 10, 2005 5:54 AM
> Subject: [Amps] TV sweep tubes and 6146s
>
>
>> What is the reason amplifiers never seem to be designed using  four
>> 6146s instead of TV sweep tubes like for example, four 6KD6s?
>> I must be missing something obvious here.
>>
>> I'm asking because I'm thinking of building a 400W or so PEP amplifier
>> for 75 and 40 meters.
>>
>> Keeping cost really low is one of my goals here and I have several 
>> good
>> 6146s in the junk box.
>>
>>
>> 73,
>>
>> Tom, WA3REY
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>>
>
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>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org