WTB - 21cmp4 CRT

[gary k.]

My 58 Philco Miss American crt is getting pretty dark. Does any AK member have this CRT for sale? Second option is having it rebuilt. Thanks -

[Tubejunke]

Have you tried a brightener yet? One of these has been on my 1956 Philco for at least 20 years and just lately its taking its time to become viewable in a day lit room...

For the benefit of your search and the rest of our info, what crt # do you need???

[polaraman]

SUBS FOR 21CMP4: 21DNP4, 21CBP4, 21CKP4, 21DRP4, 21FLP4

Not a hard tube to find but not that common either. Keep on checking Ebay.


polaraman

[gary k.]

Poor Miss America has had a brightener on for many years. The CRT is truly on it's last legs. It's pretty dark. Thanks for the subs - I'm going to keep checking on ebay and eventually might just spring for a rebuild! If any AK members have one of these sub CRT's, drop me a note!

[bgadow]

I think CBP4 is the most common of those-used in a ton of sets before 110 degree tubes took over.

[csingle]

I had trouble finding a 21MP4. Took 3 years to find one, but I finally did, through this AudioKarma forum. Keep after it, and you'll find one!

-Chris

[Tubejunke]

Please disregard...