At 04:21 PM 2/27/05, you wrote: >Been there - Done that - Still putting the $&#**^% plug-in back together! >BTW - the Cushman manual is SOOoooo wrong. > >The CRT is actually a 3RP1A (flat screen) and you "could" pay >$160 for a "NOS" one on ePay >or you could go to: > http://www.vacuumtubes.net/ >and get a brandie new (Chinese) one: > 3RP1A - $30.00 >plus shipping: > 1-5 tubes $5.00 > >Great on the fone, great and speeeedy service. >Bill - WB1GOT
One trick, since there are replacements available, and you've decided that the old one is pretty shot.... 30 years ago I used to "rejuvenate" B&W television CRTs by upping the heater voltage by running 8-9v on 6.3v heaters for a couple of hours. If you have a variac and a filament transformer around of the correct voltage, why not try it? If it's a 6v filament use a 12v or 24v transformer and start the variac at zero and work up. If you can milk the tube out of a few more years of life, you've saved some money, if not, well, you haven't lost anything but some bench time, and that might even be fun. Mike Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/