[TowerTalk] add a 3rd el to 40-2cd

[GALE STEWARD]

See the info at the following link. May be of interest. I have not done this mod to my 40-2CD but I may do this in the future.
73, Stew K3ND

VE6WZ


  
|  
|   |  
VE6WZ
   |  |

  |

 


      From: Grant Saviers <grants2 at pacbell.net>
 To: john at kk9a.com; towertalk at contesting.com 
 Sent: Wednesday, March 7, 2018 12:44 AM
 Subject: Re: [TowerTalk] add a 3rd el to 40-2cd
   
You're probably right about coil losses.  Re putting up the Moxon. It 
took careful threading of all the aluminum around the mast even with a 
boom lift, which is how I got mine on a HDX589 lowered.  The identical 
40m Moxon I built with K6KR went on his tower mast with a crane.  The on 
the ground footprint is 36' x 48'.

My 10m beams are on different towers.  Since the Moxon tips are near 10m 
resonance it could be a problem for a stacked 10m  but the tips are 
perpendicular to yagis aimed the same.  I don't recall a feedpoint 10m 
resonance but would have to check to be sure.  Maybe in 5 years if there 
a 10m band then :(

btw the boom on the scratch built ("120mph") version is 26.7' vs the 22' 
of the Cushcraft conversions.

Grant KZ1W