GU70B GU-70B NOS Soviet Transmitting Tetrode (4CX250B) Made in USSR in 1990
SKU: 44924861250

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

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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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SKU: 44924861250

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J.
Grantham, US
★★★★★ 5
Honestly, I never thought I would enjoy studying this much!
Format: Paperback, Format: Paperback
I was so grateful for this book's excellence that I opened the Amazon website during my break to write a review. I wanted to brush up on my skills before taking my first Python class in the fall, so I was looking for a beginner's book I could study on my own over the summer. Since I had no coding experience, I needed a book that explained even the smallest details step-by-step. I've been studying with the goal of completing two chapters a week since August. I'm currently on Chapter 8, and it's been so much fun! Honestly, I never thought I would enjoy studying this much. I spent two days on practice problem 8-8 (though I spent most of the time lying on the couch screaming, "Why can't I do this?" than actually solving the problem). However, after some time, I reconsidered and re-tested the problem, and today, on the third day, I finally figured out what the issue was! I resisted the urge to ask AI or look at the GitHub code the author had posted. Instead, I solely relied on the book to solve the problem. The information in the book was more than enough. I'm proud of myself! If you're a beginner like me and just starting out with Python, I highly recommend this book! It seems unlikely I'll be able to finish all the remaining chapters and projects before the fall semester, but I'd like to take the time over the weekend to finish this book if possible. I have no doubt that the detailed, helpful explanations and systematic practice problems will help me solidify my fundamental Python coding skills.
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Reviewed in the United States on August 29, 2025
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idris
Boise, US
★★★★★ 5
Awesome book
Format: Paperback
The best guide for anyone who want to learn python efficiently and quickly
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Reviewed in the United States on April 28, 2026
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kellyjdukesjr
Cuba, US
★★★★★ 5
Must have for programmers
Format: Paperback
It's a simple, easy-to-use guide for learning Python programming.
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Reviewed in the United States on March 4, 2026
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javi
San Leandro, US
★★★★★ 5
Very informative and easy to understand
Format: Paperback
I love how Charles wrote this book, I read it slowly throughout the year and was easily able to digest all the examples and illustrations provided and have got a better and broader understanding of Code, software, hardware, batteries, lightbulbs, history and much more!
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Reviewed in the United States on May 4, 2026
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Mariano
Pawtucket, US
★★★★★ 5
Great Place to Start
Format: Paperback
Clear and entertaining
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Reviewed in the United States on February 17, 2026

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