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Categories | Electron Tubes | 572B Tubes- China Manu. Help

Show all reviews of the 572B Tubes- China Manu.

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KD7ZYZ  Rating: 0/5 Mar 22, 2013 13:04  Send this review to a friend!
Not worth your time  Time owned: 0 to 3 months
I bought a matched set of three shuguang 572b tubes
from a seller on ebay. After burn in I apply power
600 watts ok that looked good but shortly after my receive on my Ft-950 began to get very load pulsating noise . One of the tubes had broken into oscillation.Replaced by seller next while loading on 75 meters the swr went whacky and in ssb there was a carrier. Put My 811a's back in my Ameritron
amp and all was well. Would not buy another China tube if it was the last one in the world total dodo. 
Product is in production.
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