[HBR] 5-pin Coil Form

[Kees & Sandy]

Hey, Bob,
Good to hear from you and continued thanks for the mirror site (sure is much faster than QSL)
So you are living in a house and doing the renovation trick (been there, done that, didn't like it ("boss" came up with too many things that looked OK/Good to me and it was always my back). Are you going for better antenna position ?
They have any Harley WLAs over there ? Always thought that was a cool bike.
73 Kees K5BCQ


-- Bob AH7I <bob at atl.org> wrote:

The brown pill bottles are usually polypropylene.
They seem OK for 40meters. Have not used elsewhere.

Some of the clear ones are polystyrene.

Here are plastics identification symbols
http://www.atomic.princeton.edu/~kuzma/chem/plastic.html

here is a chart of dielectric and loss properties
http://www.eccosorb.com/sales/Dielectric_Chart.pdf

according to the chart, polyproplene is not too far from polystrene as far
as loss goes.

-Bob
been busy with home renovation and motorcycles lately
be selling a bunch or radio and electromechanical stuff soon so I sell the
house.


On Fri, 2 Feb 2007 hbrnut at earthlink.net wrote:

>
> >Has anyone had experience purchasing/using 5 pin coil forms
> >www.tubesandmore part number P-C211 dimension  2 5/16 in H x 1 1/4 in
> >Diam "standard" 5-pin base @ $6.95 each?
>
>
> I have used them and do not recommend them. They are a two piece design, with the base glued to the actual form. After repeated inserting and removing from the socket, the glue gives way and the base separates from the form.
>
> There is a fellow reproducing the polystyrene forms. They are a little pricier at $10 each, but might be worth it if they last.
>
> Darrell, WA5VGO
> ************************************
> Visit the HBR Receiver Web Site with over 100 pictures of receivers and
> construction notes...... via http://www.qsl.net/k5bcq/
> there is also a mirror (faster response)at http://k5bcq.edebris.com/
>
>
> Retrieve reflector archived data via http://mailman.qth.net/mailman/listinfo/hbr
>
>
************************************
Visit the HBR Receiver Web Site with over 100 pictures of receivers and 
construction notes...... via http://www.qsl.net/k5bcq/ 
there is also a mirror (faster response)at http://k5bcq.edebris.com/
 

Retrieve reflector archived data via http://mailman.qth.net/mailman/listinfo/hbr