SKU: 44924861250

GU70B GU-70B NOS Soviet Transmitting Tetrode (4CX250B) Made in USSR in 1990

$30.59 $33.99
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Description

GU70B GU-70B NOS Soviet Transmitting Tetrode (4CX250B) Made in USSR in 1990Model: GU70B GU 70B Country Region of Manufacture: Germany Type: GU 70B GU70B 4CX250B Brand: Soviet One (1 pcs) NOS GU70B GU 70B NOS Soviet Transmitting Tetrode (4CX250B) Made USSR in 1990. I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts. If you buy any item on ebay from me and for if you are not fully satisfied for any reason

Model: GU70B GU-70B

Country/Region of Manufacture: Germany

Type: GU-70B GU70B 4CX250B

Brand: Soviet

One (1 pcs) NOS GU70B GU-70B NOS Soviet Transmitting Tetrode (4CX250B) 
Made USSR in 1990.



I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts.

If you buy any item on ebay from me and for if you are not fully satisfied for any reason or have any complains, please send me message before leaving negative or neutral feedback or opening a case. I really do care about your satisfaction and I’ll do my best to solve any kind of problem.

I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message.


Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.

Please ask me before you buy or bid if you are uncertain. 


Thanks for your interest

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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SKU: 44924861250

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4.3 ★★★★★
Based on 704 reviews
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C
Verified Purchase
Connor Ellis
Belleville, US
★★★★★ 5
Perfect
Software is a bit clunky to use but worked perfectly (not to mention a huge cost savings!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
K
Verified Purchase
Katelyn
Natrona Heights, US
★★★★★ 4
They do have a key to resolve it. Make sure you can connect your computer to your printer.
The customer service is great. They answer your email within 2 hours. The product itself is great too! Comes with two ink pads, gloves, etc. just like what they are advertised. They have instructions and if you have any questions, you CAN contact them. Sadly, my computer couldn’t connect to the printer so I couldn’t use the key they gave me to resolve the problem. I got the printer second hand, wanted to fix the issue, but in order to fix it, we need a cable to connect the computer and the printer. It’s weird that we found two different software (same purpose), but one can connect, the other one (the one on the instructions with this product) can’t. I confirmed with them that we do need a cable. I asked my printer seller about the cable and googled about it, both said the printer doesn’t come with a cable. But when I emailed them (this product) about my issues, they said it should come with a cable to connect. So I don’t know the answer about the cable but what I know is that I either but a cable myself or buy a separate key on their website and hopefully it works. If you don’t know your key, you can email them and ask about it. They then will send you another instructions (another method I assume). It’s a really long key, so if you can connect your computer to the printer, I’m sure you can use the key that comes with the product. It’s just a little bit of a slow process, but at least you know now and you can easily fix it in the future. :) In case you want to know my printer model, it’s ET-4800. These are just my opinions, I hope you can fix yours without any issues! :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2025
I
Verified Purchase
ilive4fire51
Charlottesville, US
★★★★★ 1
Waste of time and money
Don’t waste your time. It did not work. Tried everything the instructions said but the software would not recognize my laptop. So I could not change the replacement pad.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
M
Verified Purchase
Marla Job
Lexington, US
★★★★★ 5
reset link contains bad stuff you dont want on your computer
easy to install, appears to work well so far. Link they provide to reset your counter for tank replacement, lit up my security software like a 10,000 watt light bulb.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2025
M
Verified Purchase
Michi
Los Angeles, US
★★★★★ 5
Awesome
Works perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026

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