[Amps] GI-7b amp

[Stan Gammons]

Thanks everyone for your on-list and off-list replies.  Think I'll add this project to the to do list.


73

Stan
KM4HQE


On November 8, 2017 1:28:57 PM CST, Jeff <keepwalking188 at ac0c.com> wrote:
>The tube is ok.  It needs voltage to really do a good job so for the B+
>
>think above 2500.  Plus you need a pi input net to get decent
>efficiency out 
>of the tube.  A swamped resistor drive results in poor efficiency.
>
>73/jeff/ac0c
>www.ac0c.com
>alpha-charlie-zero-charlie
>
>-----Original Message----- 
>From: Steve Wright
>Sent: Wednesday, November 08, 2017 1:09 PM
>To: amps at contesting.com
>Subject: Re: [Amps] GI-7b amp
>
>On 08/11/17 09:03, Stan Gammons wrote:
>> I was looking at "The Everyham's Amplifier" in the latest handbook
>and it 
>> mentions using a pair of GI-7B tubes.  I have a pair of these I was
>going 
>> to use for a Clipperton L conversion, but I changed my mind. I've
>seen 
>> some comments saying the IMD performance of the GI-7B isn't very
>good.  Is 
>> this correct or is the GI-7B a decent choice for a homebrew amp?
>
>You've seen those comments because of a very small fringe group (here
>and elsewhere) choose to push their own religion of cleanliness - so
>much so that other hams hesitate.
>
>Don't feed their narcissism.  Just build it.  You'll have fun making it
>and using it.
>
>S
>
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