[TowerTalk] Cushcfraft 402CD modification for 30m band

Joe Reisert, W1JR W1JR at arrl.net
Thu Apr 6 11:08:37 EDT 2006


I am using a modified 30 meter beam with parts from a 40-2CD.

Basically, the top hat rods (36" elements after the inductor) are 
removed. Next, the spacing is reduced to 140". The boom could be 
lengthened (with little performance increase) but I just used a 
simple 12 foot boom.  Then the overall length of the reflector is 
reduced to 215" and the driven element to 212". I used a toroid balun 
at the feed but a few turns of RG8 coax (similar to 40-2 CD) should 
work fine. The VSWR is about 1.5:1 but that is no problem.

My 30 meter 2 element shortened beam works great and F/B is over 12 
dB. I have had mine in operation for two years.


Joe, W1JR

At 07:18 PM 3/27/2006, carlos colon wrote:
>I will like to know if there is any modification for Cushcraft 402CD 
>to be used on 30 meter band? Thanks for help.
>TowerTalk mailing list
>TowerTalk at contesting.com

More information about the TowerTalk mailing list