I wished that I had used spell check on my post. "attempting" and "during"
In my humble opinion, the reason for the filament to shatter, break, snap, open, split; crack, divides, etc. or whatever occurs is physical jarring. However, I had a gentleman in New Zealand ship me two 75TH tubes for my 30K-1 and they arrived in great shape. Think of how many "frequent-flyer miles" these tubes had since leaving the factory in California. Best of everything in 2004. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com ----- Original Message ----- From: "David Knepper" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, December 31, 2003 6:03 AM Subject: Re: [AMRadio] Need advice on storing RF power tubes > Can anyone explain the difference between the filaments in an ordinary light > bulb with that of a transmitting tube. The point that I am attemting to > make is that outside lighting - like the lights on our barn withstand > tremendous cold durin the winter and then when evening comes, the filament > is shocked with 120 volts. These bulbs seem to last forever, particularly, > street lights. > > I am sure that the filaments are made of different material but thought I > would ask the so-called "experts." > > Thank you and Happy New Year > Dave, W3ST > Secretary to the Collins Radio Association > Publisher of the Collins Journal > www.collinsra.com > ----- Original Message ----- > From: "Donald Chester" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Wednesday, December 31, 2003 4:51 AM > Subject: Re: [AMRadio] Need advice on storing RF power tubes > > > > > > > > >BTW, where in 4-land are you where it gets below zero? I thought you > folks > > >had it easy down there compared to those in the great white north? (o: > > > > Here in north middle TN, it normally gets below zero a time or two each > > winter, but the last few winters have stayed above zero. The coldest I > > personally remember was -18. According to the local highway dep't, it has > > dipped to -20. But that's not normal for this region. > > > > I also have heard the story about cold storage of tubes. I suspect tubes > > like the 250TH, which already have a brittle filament, would not stand > > physical vibration while at that temperature. > > > > Don k4kyv > > > > _________________________________________________________________ > > Have fun customizing MSN Messenger - learn how here! > > http://www.msnmessenger-download.com/tracking/reach_customize > > > > _______________________________________________ > > AMRadio mailing list > > [email protected] > > http://mailman.qth.net/mailman/listinfo/amradio > > _______________________________________________ > AMRadio mailing list > [email protected] > http://mailman.qth.net/mailman/listinfo/amradio
