Re: [IRCA] "Frequent Flyer" FSL Project Clears the Turbulence

[Gary DeBock <d1028gary@xxxxxxxxxxx>]

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" <coffeecanuck@xxxxxxxxx> wrote:
> 
>     I think Iâve 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 < charlesh3@xxxxxxx mailto:charlesh3@xxxxxxx > 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 <irca-bounces@xxxxxxxxxxxxxxxx mailto:irca-bounces@xxxxxxxxxxxxxxxx > on behalf of Gary DeBock <d1028gary@xxxxxxxxxxx mailto:d1028gary@xxxxxxxxxxx >
> >         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)
> > 
> > 
> > 
> > 
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