[Lowfer] WD2XGI

Fri, 05 Mar 2004 10:08:00 -0500

>What are the details on Bill's eggbeater?

>>Eight 10-foot sections of 3/4th inch copper water pipe with 45 elbows 
>>connecting it all together and series resonated. It is supported in the 
>>top run in the middle and rotated with a rotator on an insulated mast up 
>>the middle with the rotator on the bottom mounted to a pole.

Mike, Tom, that insulated mast was 3 telescoping sections of 4" PVC drain 
pipe with 3/4" holes drilled in the top and bottom sections to accommodate 
the horizontal portions of the octagonal loop. The break in the lower 
horizontal pipe section for the feed was re-enforced inside with a foot long 
1/2" ID PVC pipe and a short 1/2" steel rod inside that.

I was able to raise this loop into position without help by tightening the 
three support ropes (installed over the trees) one by one. Once installed 
the horizontal support ropes (three minimum) are obviously needed to give 
the loop lateral stability and the 4" pipe provides only for the vertical 
load. The loop is just too heavy to hang from the support ropes alone as 
does my Medfer loop. A swivel joint is needed where the pipe attaches to the 
support ropes to allow for rotating the loop without causing wear to these 
ropes.

As I recall the transmitting gain of this thing was -8db compared to the std 
#12ga 50' x 50' loop. Right now it's disassembled and parked in the overhead 
pipe rack in the garage.

Bill

>From: "WE0H" <[email protected]>
>Reply-To: [email protected]
>To: <[email protected]>
>Subject: RE: [Lowfer] WD2XGI
>Date: Thu, 4 Mar 2004 20:29:35 -0600
>
>Eight 10-foot sections of 3/4th inch copper water pipe with 45 elbows
>connecting it all together and series resonated. It is supported in the top
>run in the middle and rotated with a rotator on an insulated mast up the
>middle with the rotator on the bottom mounted to a pole.
>
>Mike>WE0H
>
>
>-----Original Message-----
>From: [email protected] [mailto:[email protected]]
>On Behalf Of Tom Norris
>Sent: Thursday, March 04, 2004 7:58 PM
>To: [email protected]
>Subject: RE: [Lowfer] WD2XGI
>
>Eventually I will get some sort of usable LF antenna up. Hopefully
>your signal will be strong enough to actually copy. :-)  What are the
>details on Bill's eggbeater?
>
>Tom
>
> >My license is for 5 years from March 1st 2004 to March 1st 2009. I will
>only
> >do extremely short HP tests near 185kc just for a nice Grabber capture 
>but
> >not to stay for any length of time that would create a stir amongst the
> >gang. I'll float around the bands as needed with anything up to 300w and
>yes
> >the loop as well as many other variations of the loop and flattop 
>vertical.
> >I suppose if I am not off doing some HP experimenting, then I can let a
> >beacon run at Lowfer power levels in the Grabber. I definitely want to 
>try
> >Bill's 3/4th inch copper pipe Eggbeater loop on a rotator with the top
> >hanging on a rope for the support.
> >
> >Mike>WE0H
> >http://www.we0h.us/lf
> >"XGI" on 185.3026kc
> >QRSS 30 & -.-.  .--
> >WD2XGI

_________________________________________________________________
FREE pop-up blocking with the new MSN Toolbar � get it now! 
http://clk.atdmt.com/AVE/go/onm00200415ave/direct/01/