[HBR] High-carb link LEXAN DENCO COILS microwave test

[Brian Burns]

Hello Rob,

When I worked at Hansen Labs at Stanford, and we wanted the lowest loss
plastic at RF, we used polystyrene. Not the best mechanically.

Cheers,

Brian

On Sun, Oct 18, 2015 at 10:46 PM, Rob <roomberg at ptd.net> wrote:

> Yes... been there with epoxy glue I used as antenna element isolators.
> I filled a cup with glue and microwaved it after it got hard to see if
> it warmed up.
> It definitely warmed but not a lot.
> Nothing like a tea cup of water.
>
>
>
>
>
> Something I remember from "Ye Olden Daze" is that whatever material you
> intend to use FOR the coilform - put it in a microwave for about a
> minute
> (on High).  If it gets hot, don't use it... the reason is obvious.
>
> Tom - W0EAJ
>
>
>
>
> On Sun, 2015-10-18 at 19:29 -0400, Rob wrote:
> > Have you used LEXAN to make DENCO coils like these:
> > http://www.learnmorsecode.com/denco/index.html
> >
> >
> >
> >
> >
> >
> > -10-18 at 22:22 +0000, Shoppa, Tim wrote:
> > > At the other end of the spectrum, I'm highly in favor of high carb
> (that is, polycarbonate) coil forms.  Polycarbonate is easy to work with
> regualr woodworking tools and does not crack like acrylic.
> > >
> > > Some links:
> > >
> > > http://www.usplastic.com/catalog/item.aspx?itemid=23791
> > >
> > > http://www.mcmaster.com/#polycarbonate/=zfbyo6
> > >
> > > http://www.eplastics.com/Lexan_Polycarbonate_Tube
> > >
> > > Tim N3QE
> > >
> > > ________________________________________
> > > From: HBR [hbr-bounces at mailman.qth.net] on behalf of Brian Burns [
> brian at lessonsinlutherie.com]
> > > Sent: Sunday, October 18, 2015 4:13 PM
> > > To: 'HBR Receiver List'
> > > Subject: [HBR] Revised Low-carb links
> > >
> > > Hello All,
> > >
> > >
> > >
> > > I just discovered that the last internet link on my collection of
> low-carb
> > > links goes to my purchase of a Hickok VTVM on Ebay---honest, I didn't
> mean
> > > to gloat! If you would like a copy of the revised list of links, just
> email
> > > me off or on the list and I'll send it along.
> > >
> > >
> > >
> > > Cheers,
> > >
> > >
> > >
> > > Brian Burns
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > ---
> > > This email has been checked for viruses by Avast antivirus software.
> > > https://www.avast.com/antivirus
> > > ______________________________________________________________
> > > HBR mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/hbr
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:HBR at mailman.qth.net
> > >
> > > This list hosted by: http://www.qsl.net
> > > Please help support this email list: http://www.qsl.net/donate.html
> > > ______________________________________________________________
> > > HBR mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/hbr
> > > Help: http://mailman.qth.net/mmfaq.htm
> > > Post: mailto:HBR at mailman.qth.net
> > >
> > > This list hosted by: http://www.qsl.net
> > > Please help support this email list: http://www.qsl.net/donate.html
> >
> >
> > ______________________________________________________________
> > HBR mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/hbr
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:HBR at mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
>
>
> ______________________________________________________________
> HBR mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:HBR at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>