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Reviews Categories | Electron Tubes | Russian GI-7B Help

Reviews Summary for Russian GI-7B
Russian GI-7B Reviews: 2 Average rating: 5.0/5 MSRP: $32.50
Description: HF-VHF-UHF Coaxial Triode. With 350w anode dissapation.
NOS available in abundance.
Product is not in production.
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W9DZ Rating: 5/5 Jan 19, 2012 17:30 Send this review to a friend
A terrific bargain  Time owned: 6 to 12 months
I am using the tropical version of this tube, the GI7BT, in a home brew 6M amp. I paid less than $28 each including shipping from Ukraine. Using a single tube I'm getting over 400W out with 22W of drive. It's been on the air 6 months now and has been very stable. I also use it as an AM linear at 100W of carrier. The tubes require conditioning before use as most have been in storage 20 to 30 years. Plenty of info available on the Internet.
KW3KW Rating: 5/5 Sep 5, 2010 05:13 Send this review to a friend
Nice Gain  Time owned: 0 to 3 months
So far the GI-7B has proved to be a great tube.
The replacements are NOS, and available in abundance via the internet at reasonable $/watt prices. For a few $ more, a robust version is available, the GI-7BT designed for tropical climates of high temperature and humidity. Power multiplication factors of 10x to 14x can be expected with 40-60w drive. RFI/TVI has proven to be nil in my application of converted Dentron

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