[SixClub] Re: [50mhz] FS: new 6M 1.5wl yagi, stack match, plus some other goodies

Thu Mar 8 21:59:54 EST 2007

That was done 17 years ago and that PC has long been trashed after a 
lightning hit. However I did make hard copies of the graphs and dimensions 
and those are available for a business size SASE  and 2 ounces postage.

Carl

----- Original Message ----- 
From: "Bill Cotter" <n4alg at qx.net>
To: "jeremy-ca" <km1h at jeremy.mv.com>
Cc: "Gary - N3JPU" <n3jpu at speakeasy.net>; "'World Wide Six Meter Club'" 
<sixclub at mailman.qth.net>; <50mhz at mailman.qth.net>; "'VHF Reflector'" 
<vhf at w6yx.stanford.edu>
Sent: Tuesday, March 06, 2007 8:21 AM
Subject: Re: [50mhz] FS: new 6M 1.5wl yagi, stack match, plus some other 
goodies

> Carl,
>
> You seem to have a winning design, based on your numbers. How about 
> sharing the YO file with the list. I think many of us would appreciate 
> having this data to build a similar design.
>
> Tnx and 73 bill n4lg
>
>
> At 07:54 PM 3/3/2007, jeremy-ca wrote:
>>The OWA concept has been around a long time before Cebik's article and I 
>>first read of it in German and US UHF articles highlighting very high 
>>performance 432 mHz arrays that could perform under all weather 
>>conditions. This was back in the 80's.
>>
>>My own experience was taking a 6 el Cushcraft boomer and spending some 
>>serious YO and NEC time on it. The end result was 8 elements with 11.1 dBd 
>>at 50.1 mHz with a 37 to 42 dB complete 180* f/r up to 50.5 mHz and an 
>>almost flat VSWR curve over that range. It has been in operation for 17 
>>years and is a proven performer chasing DX, contesting or yakking on 50.4 
>>AM.
>>Snow and ice has no noticable effect.
>>
>>I also have 28' boom 432 antennas built to this criteria and have 
>>redesigned several other commercial 6M yagis for others that exhibit 
>>similar performance results.
>>
>>Carl
>>KM1H
>>
>>
>>----- Original Message ----- From: "Gary - N3JPU" <n3jpu at speakeasy.net>
>>To: "'World Wide Six Meter Club'" <sixclub at mailman.qth.net>; 
>><50mhz at mailman.qth.net>; "'VHF Reflector'" <vhf at w6yx.stanford.edu>
>>Sent: Saturday, March 03, 2007 5:02 PM
>>Subject: [50mhz] FS: new 6M 1.5wl yagi, stack match, plus some other 
>>goodies
>>
>>
>>Put up a new 60' tower and new antenna for 6M. Originally planned to stack 
>>a
>>pair of the 1.5wl yagis but did not realize how robust the Force12 
>>antennas
>>are so settled on just one of them. This is a OWA design on a 30' boom.
>>Check out Cebik's articles on the OWA design for VHF
>>(http://www.cebik.com/qex/owa.pdf). As I mentioned this is a very robust
>>antenna. Elements are .75" for the 12" center section, tapering to .625" 
>>for
>>18" then to .5" tips. The boom is 2" diameter end to end with the walls
>>being .125" except for the 6' end pieces being .058". The design calls for
>>no truss. I have modeled this with MultiNEC and YW and it's right on what
>>Force12 claims as true gain of 10.6dBd and 25dB FB. SWR curve is very 
>>broad
>>which came in handy last week when we had a heavy and wet snowfall. My
>>EF-906's SWR did not budge when there were M2's in the area that were
>>unusable.
>>
>>Being a OWA design it uses a split driven element and I have for it a new
>>high quality Array Solutions W1JR 1:1 balun with N connector.
>>
>>I have not had any openings yet since I put my other EF-906 up but I do 
>>work
>>regularly from FM19lc up into FN32 with QSO's that span an hour or more.
>>That is 325 miles and I am only using 100W.
>>
>>----------------------------------------------------------------------------
>>-
>>
>>New in the box:
>>Force12 EF-906 30' 10.6dBd Lists for $599.00
>>http://force12inc.com/F12-6mtr-info-001.htm
>>
>>Array Solutions W1JR-50-3N Balun N Lists for $94.75
>>http://www.arraysolutions.com/Products/baluns.htm#5%20kW%20Balun
>>
>>Array Solutions BMP-4 Mounting Plate Lists for $14.00
>>http://www.arraysolutions.com/Products/baluns.htm#Mount
>>
>>DX Engineering DXE-SAD-200A 2" Saddle Clamp Lists for $8.40
>>
>>Asking $600 for all above.
>>
>>----------------------------------------------------------------------------
>>-
>>
>>New and never used:
>>Array Solutions Mini-Stack Match 6M with N connectors. List for $148.
>>Asking $130
>>http://www.arraysolutions.com/Products/stackmatch.htm#MiniStackMatch
>>
>>----------------------------------------------------------------------------
>>-
>>
>>New and never used:
>>Yaesu GS-065 Thrust Bearing (Mast Diameter 1 1/2 - 2 1/2") List for
>>$59. Asking $45
>>http://www.heightstowers.com/rotators.htm
>>
>>----------------------------------------------------------------------------
>>-
>>
>>Gary Mitchelson
>>N3JPU Montgomery Co. MD  FM19
>>USAF MARS and SHARES: AFA1PU
>>MD/DC State USAF MARS Director AFF1MD
>>USAF MARS Technical Services Manager AFN1TS
>>http://www.mitchelson.org/
>>
>>
>>
>>Moderator: Ray Brown, KB0STN
>>_______________________________________________
>>50mhz mailing list
>>Home: http://mailman.qth.net/mailman/listinfo/50mhz
>>Help: http://mailman.qth.net/faq.htm
>>Post: mailto:50mhz at mailman.qth.net
>>
>>Moderator: Ray Brown, KB0STN
>>_______________________________________________
>>50mhz mailing list
>>Home: http://mailman.qth.net/mailman/listinfo/50mhz
>>Help: http://mailman.qth.net/faq.htm
>>Post: mailto:50mhz at mailman.qth.net
>
>
> ----------------------------------------------------------
> Bill Cotter, N4ALG             E-mail: n4alg at qx.net
> 173 Carolyn Lane               Home: (859) 887-5563
> Nicholasville, KY 40356-9340   Work: (859) 323-6474
>
> ARRL   ARCI #9878   QRPl #1646   QCWA #29393   FISTS #4535
> ---------------------------------------------------------- 
>
> 