[Antennas] Open Wire Feedline

Sat Jan 26 19:39:16 EST 2013

I thought the pens came in white as well. I would prefer blue but oh well....
73, de Jim KG0KP
-----Original Message-----
From: antennas-bounces at mailman.qth.net [mailto:antennas-bounces at mailman.qth.net] On Behalf Of Ken
Sent: Saturday, January 26, 2013 6:04 PM
To: KB4QQJ at aol.com
Cc: n8de at thepoint.net; antennas at mailman.qth.net
Subject: Re: [Antennas] Open Wire Feedline
 I was hoping they would last long enough in the Texas sun. It would be nice to get "free" plastic tubes. I will have a least a 100" 
foot run, might take quite awhile to gather them up. What wire did you use Randy? Did you cut the pens down, 3" as in the video?
On 01/26/2013 05:28 PM, KB4QQJ at aol.com wrote:
> 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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