coils

[Eddy Swynar]

Hi Brian...

Barker & Williamson actually DO have a website that lists the particulars of
ALL their coil stock---just get on YAHOO & type in the company name, & check
it out! (...AND the current price$!!!).

~73~ Eddy VE3CUI - VE3XZ






----- Original Message -----
From: "Brian Carling" <bcarling at cfl.rr.com>
To: <BOATANCHORS at LISTSERV.TEMPE.GOV>
Sent: Friday, October 19, 2001 4:52 PM
Subject: Re: coils


> On 19 Oct 2001, at 9:29, JR LINDEN wrote:
>
> > I don't have a cross reference and I'm not familar enough with coil
numbers
> > but are any of them that are listed, suitable for the output stage of a
10-6
> > meter amplifier?  Tnx....JR  K7PUR
> >
> > JR Linden  K7PUR
> > Cave Creek, AZ
>
> Dear JR - I can tell you this:
>
> They are medium sized coils.
>
> For example, the 3016 is an air wound coil that looks like it would work
on about 500
> kHz.
>
> 1" diameter coil and it is 3" long. The winding is made of wire that is
either tinned or
> silver plated. There seem to be about 28 or 30 turns per inch. So it is
about 85
> or 90 turns altogether. the wire is too small for a QRO final amplifier
for sure.
> More suitable to a buffer tank stage I would guess. You cut these to
whatever length you
> need for the correct inductance. Making taps would be tricky on such
closely spaced
> inductor.
>
> Drat! These boxes are like small tube boxes and very difficult to open
without tearing
> off the tabs. You know the  drill if you mess with tube boxes much!
>
> The one labelled 3010 is more of a VHF 10m/6m coil with only a few turns
of thicker wire.
> Like 10-12 turns I think. Wider spaced. It is 1" diameter, but only about
1.25" long.
>
> The 3015 is 1" diameter and 3" long. It has about 50 turns of wire that
looks to be about
> 22 or 24 gauge ( my guess).. or close to it. Looks like it's good for 80m
as-is  or for
> 40m and up with a bit of cutting and trimming.
>
> The 3013 is a seriously HF/VHF unit, again 1" diameter and 3" long.
> It has 12 turns of wire that is about 18 or 20 gauge (my guess) and
> would make a dandy medium power driver or small final tank for 10m or 6m
work.
>
> All the best - Brian, AF4K
>
>
>
>
> I am guessing that there must be data on them somewhere on the web.
>
> -----------------------------------------------------------
> This list is a public service of the City of Tempe, Arizona
> -----------------------------------------------------------
>
> Subscription control -
http://www.tempe.gov/lists/control.asp?list=BOATANCHORS
> To post - BOATANCHORS at LISTSERV.TEMPE.GOV
> Archives - http://interactive.tempe.gov/archives/BOATANCHORS.html
>

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=BOATANCHORS
To post - BOATANCHORS at LISTSERV.TEMPE.GOV
Archives - http://interactive.tempe.gov/archives/BOATANCHORS.html