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
