[South Florida DX Association] twenty tube amplifier
fish7days
fish7days at bellsouth.net
Tue Sep 4 21:06:52 EDT 2007
Try this URL:
http://tinyurl.com/yt99wu
Andre
N1AJV
-----Original Message-----
From: sfdxa-bounces at mailman.qth.net [mailto:sfdxa-bounces at mailman.qth.net]
On Behalf Of Bruce Phegley
Sent: Tuesday, September 04, 2007 8:25 PM
To: Scott / W4PJ
Cc: SFDXA at mailman.qth.net
Subject: Re: [South Florida DX Association] twenty tube amplifier
I never could get the page to come up from that link.
I figured it was just a bad link, guess not..
here is what I get.
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Scott / W4PJ wrote:
> That's really cool.
> Like a Log-Periodic antenna, which ever section of the system is resonant
> does the work, and the other elements just don't do anything. In this amp
> which ever section of the tube line-up is resonating via the continuous
> coil - what is it, I forget F=2*Pi / FC ?... so even though there are 18
> tubes in the output section, only two or three are making any power / on
> each side at a time. Maybe 3 tubes on each side of the rail x 2 = 6
250B's
> is an easy kilowatt - three on each side at whatever frequency happens to
be
> resonating while the rest of the valves aren't being excited.
>
> No tune Log-Per Amplifier. I'm impressed.
>
> Scott / W4PJ
> ----- Original Message -----
> From: "Tom Lewis" <n4tl2 at earthlink.net>
> To: <SFDXA at mailman.qth.net>
> Sent: Friday, August 31, 2007 9:12 PM
> Subject: [South Florida DX Association] twenty tube amplifier
>
>
>
>> twenty tube amplifier
>>
>>
>>
>
http://cgi.ebay.com/Marconi-1kW-HF-Amplifier-TWENTY-4CX250B-Tubes-AWESOME_W0
>
>
QQitemZ120154931888QQihZ002QQcategoryZ48700QQrdZ1QQssPageNameZWD2VQQcmdZView
>
>> Item
>>
>>
>> Tom, N4TL
>>
>>
>>
>>
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>
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