Exactly the higher temp boils off more Cs to raise the signal to noise at the expense of tube life. Thats exactly how I run Frankenstein. Though in that case I am eking out what was left at no expense to tube life because it was dead. We are talking C fumes. Regards Paul WB8TSL
On Sun, Feb 19, 2017 at 4:19 PM, Bob Camp <[email protected]> wrote: > Hi > > The high performance tube runs at a higher beam current than the standard > tube. One would guess that a bit more Cs boils off to supply the beam > at the higher temperature. There are rumors that the high performance tubes > were “selected” out of the batch. Even if that was once true, who knows > if it’s true today … > > Bob > > > On Feb 19, 2017, at 3:04 PM, Bill Dailey <[email protected]> wrote: > > > > Is it possible that the higher temp keeps the tube "cooked off?" > > > > Bill Dailey > > > > > >> On Feb 19, 2017, at 12:54 PM, <[email protected]> <[email protected]> > wrote: > >> > >> Hi, > >> > >> The tiny coil inside the beam path is the low frequency coil used for DC > >> testing of the tube. > >> > >> The tube shown is a standard performance tube and has no degaussing > coil. > >> > >> The flat windings on top of the shield are the C-field winding. > >> > >> The high performance cavity is even "prettier". > >> > >> You can see one at http://www.leapsecond.com/pages/cesium-tube/ > >> > >> Towards the bottom you can see the C-field windings in slots around the > >> circumference of the cavity. > >> > >> BTW in 5071A tubes there is no internal difference between the STD and > >> High Performance tubes. > >> > >> They just run at different temperatures! Saves having to build two > >> different tubes! > >> > >> Some more interesting 5071A tube info will post in a couple weeks!!! > >> > >> (Hint: Run your 5071A HiPerf tube at the Std tube temperature to extend > >> life!!!???) > >> > >> Cheers, > >> > >> Corby > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > >> and follow the instructions there. > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
