[Amps] GI-7BT Amplifier Thoughts

[Jeff Blaine]

The GI7B is a great tube.  350W plate disipation per hole.  I use it for 
RTTY contesting and have exploded the amp in various ways many times but the 
tubes just keep on ticking.  1000-1200W out depending on band but thats with 
some pretty serious work on the anode coolers...

If you want more power, go with the GS35B instead.  It's by far the easier 
solution and with a true 1500w plate dis, it will push out whatever power 
you want as long as you have enough power supply to back it up.

73/jeff/ac0c
www.ac0c.com


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From: "Roger" <sub1 at rogerhalstead.com>
Sent: Friday, August 27, 2010 12:45 PM
To: <amps at contesting.com>
Subject: Re: [Amps] GI-7BT Amplifier Thoughts

>
>
> On 8/27/2010 12:19 PM, Richard Solomon wrote:
>> Has anyone used the Russian GI-7BT in a VHF or UHF Amplifier ?
> Apparently they are often used in Europe and a few are floating around
> state side.
> There is a some what larger version with 1500 watts dissipation
> available in the $30 to $50 range. I saw one of those set up for
> 2-meters. How well it worked? I don't know.
>> It looks like a pair of them might work. Are there any sockets
>> for them, it would make construction much easier.
> There is a guy who makes them and is selling them on e-bay. They look
> good. How well they stand up? I don't know.
>
> 73
>
> Roger (K8RI)
>> Just musing on a quiet day in the desert.
>>
>> 73, Dick, W1KSZ
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