[Boatanchors] Lettine 240 Transmitter Plug In Coils

[D C *Mac* Macdonald]

Have the folks who made the "Air-Dux" coils gone away?
If I recall, they seemed to be of sturdier construction.
 
* * * * * * * * * * *
* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret (61-81) *
* * * * * * * * * * * 

 

----------------------------------------
> From: 1oldlens1 at ix.netcom.com
> To: drewrailleur807 at yahoo.com; boatanchors at mailman.qth.net
> Date: Sun, 12 Dec 2010 14:32:36 -0800
> Subject: Re: [Boatanchors] Lettine 240 Transmitter Plug In Coils
>
>
> ----- Original Message -----
> From: "Drew P." 
> To: 
> Sent: Sunday, December 12, 2010 10:55 AM
> Subject: Re: [Boatanchors] Lettine 240 Transmitter Plug In
> Coils
>
>
> >
> > Lee wrote:
> >
> > [snipped for brevity]
> >
> > "What is really disturbing is new B&W coil stock at 1 3/4
> > inches in diameter with many turns per inch, which would
> > be used to re-coil a 80 meter and 160 meter coil base,
> > sells for $80 for a 4 inch long piece from B&W direct!
> > The price is insane. I think I can make my own coil stock
> > for the high bands which have few turns per inch but close
> > wound ones for 80 and 160 meters might be a real challange
> > to make myself."
> >
> > How much demand is there for B&W coil stock these days?
> > Welcome to the world of supply and demand.
> > Statospherically high prices on many specialty items have
> > certainly dissuaded me from attempting many otherwise
> > appealing projects.
> >
> > A friend of mine made PA tank coil forms for his BC-610 by
> > threading ABS (not PVC) pipe of appropriate diameter on a
> > lathe. It was an easy matter to then wind the wire into
> > the threads. This worked out well in operation with no
> > undue heating of the finished coil.
> >
> > My friend is lucky in that "his" lathe runs on beer. (He
> > tossed a six pack in the direction of his lathe-owning
> > buddy).
> >
> > Drew
> >
> >
> I also wonder about the logic behind B&W's pricing. If
> the coils are uneconomical to make why not just discontinue
> them instead of pricing them out of reach. One would think
> that if low volume is the problem reducing the price and
> advertising a little would increase it quite a bit. Or,
> perhaps, they could just farm them out. I suspect that
> whatever patents B&W has will have long ago expired and
> would tell you how to make similar coils. Essentially, the
> are just air-wound coils on strips of polystyrene for
> support.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk at ix.netcom.com
>
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