Lol Thanks for that berry useful information!
Best regards - Bry Carling > On May 25, 2014, at 8:12 PM, "Michael" <[email protected]> wrote: > > Note that the only good ones are the IERC shields made to MIL-S-9372 specs. > Of those, only the ones which were made on alternate Tuesdays that coincide > with a new moon between the hours of 7:14 AM and 1:23 PM are worth having. > The others made to this spec resonate imperceptibly at frequencies between > 516 Hz and 2.16 kHz. This resonance is impossible to see on any test > equipment. Only a true expert's ear can hear it. Other IERC shields also > have resonance issues, mostly at negative frequencies which cancel out the > positive counterparts in music thus leaving the music sounding hollow and > unfulfilled. Non-IERC shields sound metallic and aren't worth the metal > they're made from. > > Best Regards, > > Michael, K3MXO, CBLA #6, BL01hx15np24 ... or there abouts > What was the greatest thing before sliced bread? > http://www.nationalmssociety.org/chapters/NTH/index.aspx > http://wh7hg.blogspot.com/ > http://kludges-other-blog.blogspot.com > Hiki Nô! > > -----Original Message----- > From: Boatanchors [mailto:[email protected]] On Behalf Of > Brian Carling > Sent: Sunday, 25 May, 2014 13:44 > To: Bob Jackson > Cc: porch.boat; puck.boat; qth.boat > Subject: Re: [Boatanchors] Tube shields > > I have a bunch of the black ones if anybody is interested... > > Best regards - Bry Carling > > > >> On May 25, 2014, at 6:48 PM, "Bob Jackson" <[email protected]> wrote: >> >> I always assumed that tube shields were used to keep stray RF either in or > out of the tube or both. Are there other reasons as well like keeping them > securely in their sockets via the little springs inside the shield? >> >> Bob >> ______________________________________________________________ >> Boatanchors mailing list >> Home: http://mailman.qth.net/mailman/listinfo/boatanchors >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> List Administrator: Duane Fischer, W8DBF >> ** For Assistance: dfischer at usol.com ** >> >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > _______________________________________________ > Boatanchors mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/boatanchors > > > _______________________________________________ > Boatanchors mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/boatanchors _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
