Chuck and Colin, Thanks for your suggestions, but in this case the critical nature of the N50 variable cap is not only related to the 8:1 Vernier drive, but also to the subminiature size. Standard size variable caps will not fit in the antenna's ultra-compact PVC frame.
Gary > On August 25, 2018 at 5:54 PM "R. Colin Newell" <[email protected]> > wrote: > > I think I’ve got around 10 of these in my projects cabinet - one can > never have too many variable capacitors with vernier drives. > > https://youtu.be/FofRvvPzG7E > > Zeroing out the IMD in the dual Norton phaser buffer/amplifier... > > LPF/HPF filter suggestion/design by Steve Ratzlaff... > > Colin Newell - Victoria - B.C. CANADA - > > On Aug 25, 2018, at 5:04 PM, Chuck Hutton < [email protected] > mailto:[email protected] > wrote: > > > > > Gary - > > > > > > Happy you found more of them. > > > > Should you get desperate in the future, I'll point out that Vernier > > (planetary reduction) drives are still available, so you could in principle > > substitute a any normal variable of the proper size. > > > > > > Chuck > > > > > > ________________________________ > > From: IRCA <[email protected] > > mailto:[email protected] > on behalf of Gary DeBock > > <[email protected] mailto:[email protected] > > > Sent: Saturday, August 25, 2018 1:48 PM > > To: America, Mailing; NRC > > Subject: [IRCA] "Frequent Flyer" FSL Project Clears the Turbulence > > > > Thanks to long term technical buddy Steve Ratzlaff for tracking > > down a new source for the critical "N50P" variable capacitor used in the > > TSA-friendly 3.5" rod and 5" bar FSL antennas. A sizable order has been > > placed for these critical components, ensuring that these airport-friendly > > miniature FSL's can continue to be constructed well into the future. > > > > As mentioned previously, the performance of these tiny FSL's > > during long range air travel has proven to be far greater than expected, > > providing a major boost in hobby satisfaction for those DXers who have > > tried them out. Craig Barnes, Pete Taylor and I are all eagerly awaiting > > our next "Frequent Flyer" trip, after having experienced thrilling TP and > > DU-DX in multiple trips to places like Hawaii and the Cook Islands. The > > option of having serious DXing gain in exotic places around the world > > (especially where large external antennas are forbidden) can be a game > > changer in hobby satisfaction. The related 23-page full construction > > article (which will soon be augmented by the "rubber locking collar" > > improvement to the ferrite sleeve) is posted at > > http://www.mediafire.com/file/pnfm8909c77zjoy/3.5inch-FF-FSL.doc/file > > > > Gary DeBock (in Puyallup, WA, USA) > > > > > > > > > > _______________________________________________ > > IRCA mailing list > > [email protected] mailto:[email protected] > > http://montreal.kotalampi.com/mailman/listinfo/irca > > > > Opinions expressed in messages on this mailing list are those of > > the original contributors and do not necessarily reflect the opinion of the > > IRCA, its editors, publishing staff, or officers > > > > For more information: http://www.ircaonline.org > > > > To Post a message: [email protected] > > mailto:[email protected] > > > > _______________________________________________ > > IRCA mailing list > > [email protected] mailto:[email protected] > > http://montreal.kotalampi.com/mailman/listinfo/irca > > > > Opinions expressed in messages on this mailing list are those of > > the original contributors and do not necessarily reflect the opinion of the > > IRCA, its editors, publishing staff, or officers > > > > For more information: http://www.ircaonline.org > > > > To Post a message: [email protected] > > mailto:[email protected] > > > > > > > _______________________________________________ IRCA mailing list [email protected] http://montreal.kotalampi.com/mailman/listinfo/irca Opinions expressed in messages on this mailing list are those of the original contributors and do not necessarily reflect the opinion of the IRCA, its editors, publishing staff, or officers For more information: http://www.ircaonline.org To Post a message: [email protected]
