[Antennas] Open Wire Feedline

[n8de at thepoint.net]

Microwave ovens heat by causing 'vibration' of WATER molecules in the  
item being heated.

Not sure that ball-point pen bodies have any water in them.

73
Don
N8DE

Quoting KB4QQJ at aol.com:

>
> If you want to perform a very basic check of the conductivity of your
> spacer, put it in the microwave for one minute. If it get "hot" to   
> the touch it
> is not suitable for insulators. This being  a very simple but basic test.
> The black pens I've used (papermate?)come out of the microwave at 93°f and
> have  stood 600 watts and daily NC sun at my clubhouse  for the  last three
> years. It is a 41 foot section of openwire. Just my 2¢
>
> Randy_KB4QQJ
>
>
>
> In a message dated 1/26/2013 5:29:29 P.M. Eastern Standard Time,
> n8de at thepoint.net writes:
>
> think  using BLACK spacers is a big mistake, as the chemical used to
> make  the pen bodies BLACK is somewhat CONDUCTIVE ... and might break
> down  under high power applications.
>
> I prefer to use the plastic tubes that  machine tool companies discard
> from drill bits.  They are about  5 to 6 inches in length, somewhat
> transparent, and FREE, if you ask  for  them.
>
> 73
> Don
> N8DE
>
>
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