Amps
[Top] [All Lists]

Re: [Amps] Gi-7b

To: "Tony King - W4ZT" <amps080605@w4zt.com>,"AMPS" <amps@contesting.com>
Subject: Re: [Amps] Gi-7b
From: "Mike(W5UC) & Kathy(K5MWH)" <w5uc@cox.net>
Date: Mon, 26 Jun 2006 21:41:18 -0500
List-post: <mailto:amps@contesting.com>
Thanks Tony.  Great info. I guess if I can get 800 watts output on 6 meters 
I will be happy.  Anything over that will be a bonus.  I'm doing a running 
history of the project with my digital camera. I will put it on my web site 
when it is complete.

73,
Mike, W5UC




----- Original Message ----- 
From: "Tony King - W4ZT" <amps080605@w4zt.com>
To: "AMPS" <amps@contesting.com>
Sent: Monday, June 26, 2006 9:21 PM
Subject: Re: [Amps] Gi-7b


> Mike,
>
> Take a look at the projects by W4EMF <http://w4emf.gs35b.com> and K4POZ,
> <http://k4poz.w4zt.com>.
>
> Treat the GI-7B like any other old tube. It's a very stable little tube
> that will give you 55 to 60% efficiency in Grounded Grid with tuned
> input. I am currently doing a six meter conversion and retrofit of an
> old butchered SB-200 with a single GI-7B.
>
> Good luck with your project!
>
> 73, Tony W4ZT
>
>
> Mike(W5UC) & Kathy(K5MWH) wrote:
>> Good Evening All:
>>
>> I found this group while searching for information on the Gi-7b Russian 
>> tubes.  So, here is the question.  Has anyone used the Gi-7b in an 
>> amplifier?   I am in the process of building a new amp for 6 meters using 
>> a pair of these tubes. What kind of output did you get, and at what 
>> efficiency? I have seen data saying anywhere between 700 & 1200 watts for 
>> a pair at 6 meters, and at efficiencies from 57% to 68.5%
>>
>> Did you burn the tubes in before applying HV and drive?  What was your 
>> burn in process?
>>
>> Any input would be greatly appreciated.
>>
>> 73,
>> Mike, W5UC
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps 

_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps

<Prev in Thread] Current Thread [Next in Thread>