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REPLACING BOTH THE 12AQ5 AND 12AU6 IN DEMCO

Sonar

Sr. Member
Apr 8, 2016
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As these particular tubes are abundantly available (NOS and tested) is their any particular brand you would choose? Sylvania, RCA, ect ect.
Any particular getter suggested over another?
Is there something I should know about which type would work best for the Demco modulator and it's particular application?
 

The name printed on a tube only tells you who packaged it for sales and distribution, not who made it.

I predict you'll be hard pressed to find any measurable performance change from one brand to the next.

73
Very good. I'll just purchase both of them from the eBay tube seller with the most sales and best feedback. Thank you nomad. 73
 

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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.