[frenchy]

I posted this question to the radio newsgroup last night as the AK forum was down for maintenance...
The pic tube looks to be rebuilt, has newer 70's type "RCA" script on one sticker, label on it about it having a new gun, etc. Seems to test good, I'm getting 10 to 10.5 on a scale of 0-4.5 being fail, 4.5 to 14 being pass. On all three guns, all about 10 to 10.5. That's about what I got on all my color sets that work good, when I tested them for the heck of it.
But.... when I first pulled the back of the set off it had one of those dreaded color boosters on the pic tube. So when I saw that I thought -crap- and was expecting to get lousy test readings, especially testing it in it's old pre-booster state. This booster is just called a color booster cb-380 by antronic corporation. Somebody said maybe it was for a heater/cathode short but not sure these boosters do that unless they are marked as such, this one says nothing about it. Do they?
But even then, I get nothing on any of the HK or G1 short tests I did on any of the guns either. Cold or warm, tapping the neck, needle doesn't jump or move.
And if this booster doesn't do anything for shorts, that tells me that's not why they put the booster on there in the first place. But then why am I getting such good readings if the put it on there for low emission? Any suggestions or ideas? Just wish I had a better idea of whether or not I have a crap tube here first before I start working on the rest of the set. thanks!
Frenchy
Tester is an RCA WT-509A from late 60's.