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[TowerTalk] More CC 402CD -> 403CD - More Oops

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Subject: [TowerTalk] More CC 402CD -> 403CD - More Oops
From: (
Date: Sat Feb 22 13:53:56 2003
In a message dated 2/22/03 8:02:40 AM Pacific Standard Time, 

> HI Dave,
>  Yes, when the capacity hats fall off, so does F/B and gain! You'll 
>  find that the 36" element broke due to vibration and that the so called 
>  2-meter Yagi clamp is still in place. If not, let me know and I can 
>  to send you one.
>  As for 17 meters, the 40-2CD has a resonance at about 19 MHz so it has a 
>  few dB F/B and some gain. I worked about 200 DXCC with mine before I 
>  designed the A3WS and put it up for WARC. On 12 meters, I don't know.
>  The 40-2CD is a great performer. One of those flukes that come along every 
>  so often. I miss mine! I hope to out up an XM-240 soon.
>  73,
>  Joe, W1JR
>  At 09:52 AM 2/22/2003 -0500, you wrote:
>  >The Cushcraft design appears very similar to the 3 el 40 short beam from 
> the
>  >ARRL Antenna Book circa 1980.  It was 3 elements on a 36 foot boom with 
>  >reflector and driven element spaced 23 feet.  It used coils with a 
>  >hat on each element half.   I think maybe it was Joe W1JR that told me in
>  >about 1984 that converting to a 3 el was not really worth the effort.  I
>  >remember the figure of .8Db more forward gain and a sharper pattern.
>  >
>  >I did lose one of the capacity hats on one reflector element half.  At 
> first
>  >I noticed that the SWR
>  >changed from mid band (7180 or so) to 7230 but little change in results.
>  >The past few months
>  >I now find the beam has lost front to back with beaming NW/SE its better 
> off
>  >the back by sometimes an S unit.  Europe and VL/ZL are about equal 
>  >either was.  I can keep the beam between NW and ENE and work about 
>  >However I plan on replacing the hat.  I have the actual pieces of metal 
>  >the har.  Just not sure if the clamp is still there (hard to see 87 feet
>  >up).  Ed K4SB says its a 2 meter element to boom clamp.  Gotta crank down
>  >all the amtennas.  Health problems have kept me from doing the work until
>  >now.
>  >
>  >I previously used a Mosley 2 el S-402 (the Cushcraft is much better) and a
>  >Create 3 el HB9CV
>  >on a 36 foot boom.  Too flimsy and aluminum windings arced at over 1KW.
>  >Seemed to work as well as the Cushcraft.  The Cushcraft was compared to a
>  >Telrex 3 el 40 on a 29 foot boom at N4RJ and was at least as good every 
> time
>  >(I would win 50% of the time).  Val N4RJ then switched to a 3 el on a 46
>  >foot boom and now he beat me at least 50% of the time.
>  >
>  >A number of people told me my beam was a killer and bought their own beam.
>  >K1MM told me his worked well on 17 and 12.  I found the beam works very 
> well
>  >on 17 but on 12 its a cloverleaf pattern so its either boom or bust (S9+ 
>  >JA and S3 in DU).   The beam works on 160 too!  It loads thru a tuner but
>  >having the remote coax switch in line forces me to run 100 watts max.  My
>  >firsdt contact on 160 using the beam was HC8DX on SSB in 1987.  I got a
>  >59+20 and he had me confused with K4JPD.  That was before I ran the remote
>  >switch.  I still use it on receive and the last couple of years used in
>  >during the CQ 160 SSB.
>  >
>  >I have not checked out the coil Q (so so according to W1JR).  However it
>  >makes a great 40 antenna for the little/medium gun!
>  >73 Dave K4JRB
>  >
>  >
>  >73 Dave K4JRB
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