[AMPS] Fwd: [QRO] Fwd: Homebrew Amp

[Jon Ogden]

Forwarded from the QRO reflector.  Please reply to original author:

Steve Desmarais at n1ibcsteve@edgenet.net

Send him e-mail direct as I don't think he's on AMPS.

73,

Jon
KE9NA

---------------- Begin Forwarded Message ----------------
Date:        09/25  22:24
Received:    09/28  09:44
From:        Brian Short, bshort@speedchoice.com
To:          qro@qth.net

>Date: Fri, 25 Sep 1998 17:47:57 -0400
>From: "Steven D. Desmarais" <n1ibcsteve@edgenet.net>
>Reply-To: n1ibcsteve@edgenet.net
>Organization: N1IBC
>X-Mailer: Mozilla 4.01 [en] (Win95; U)
>To: k7on
>Subject: Homebrew Amp
>
>Hi there,
>               My name is Steve Desmarais and I live in swansea, Mass. I
>did a little
>reading on your web site, which I might ad, is very nice! My inquiry is
>about the
>text under the "Homebrew" section of QRO. It says that "Tetrode are the
>way
>to fly because 30 watts of drive will give you 1500 watt out!" Well here
>is my
>question. On my homebrew 4CX1500B 45-50 watt drive is 1500 out. I know,
>15-20 watts isn't a big deal, right? Well my grid current is very high,
>about 4ma. If
>I bring the drive up to the .5-1ma that is normal, I get the RATED 1100
>watts out.
>Are you experiencing this same condition? Im running passive grid as
>well and have
>know complaints, it plays great. Im just trying to get a feel for what
>other home brewers
>are doing out there. Just for the record, Im using a vacuum variable off
>the plate, and a
>roller inductor. No tapped inductor. I can tweak for max! Please answer
>this inquiry,
>your help would be gladly appreciated, Thanks...Steve D.    N1IBC
> 
--
Brian K. Short 1994 E Laguna Dr Tempe, Az 85282
k7on@qsl.net http://www.qsl.net/k7on (602)839-3484
--
 

---
Submissions qro@qth.net


----------------- End Forwarded Message -----------------

--------------------------------------------------------------------------
Jon Ogden

jono@enteract.com
www.qsl.net/ke9na

"A life lived in fear is a life half lived."


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