[HiDARG-MEMBERS] 6 meter Vertical Dipole

Sun Mar 15 00:22:51 EDT 2020

I made a 6m wire ground plane years ago - very simple and easy to tune.
worked great.  In fact, I made my very first 6m DX (for me) contact with
the top of the antenna about 10 - 12 ft up in a tree and the two ground
planes staked to the lawn with 2 or 3 ft of cord.

Materials were easy -  wire and a SO-239 chassis connector.  The vertical
element (1/4 wavelength on the freq you want to use) is soldered into the
center connector so that you can attach the coax to the antenna and the
ground planes are attached to opposite mounting holes on the chassis
connector.  It doesn't get much simpler than this - everything is 1/4
wavelength.  Remember to allow a little extra length for the elements so
that you can make a loop for hanging it up and staking it out while still
keeping the correct length for the freq used.  Upside down Y configuration.
  The first contact was Arizona!  This was done w/o an analyzer based on
the math.  I think I had Joe K7SQ come over and put his analyzer on it to
see what it was doing - checked out fine - just use a tuner.

I used a 6m vertical that I also have for 6m FM - it's tuned to the FM
portion of the band and also worked great locally.

Lots of possibilities for the industrious ham.

7   3

Jeff Moore  --  KE7ACY

On Sat, Mar 14, 2020 at 5:45 PM Max Vaughan bb <maxv at bendbroadband.com>
wrote:

> Just remember, that this is an End FED vertical Dipole, meant to hang from
> a tree or even the top peak of your house.
>
>
>
> The RG58CU I got from HRO
>
> I used these plans below to start with, but adjusted the calcs based on
> the materials I had and the coax I used.
>
> I used the 1400mm instead of 1315 and the 1255mm length I did keep.
>
> I may adjust the shield section from 1255 to 1300 next time around, to see
> what that does.
>
>
>
> The nice thing about that part is that you can easily change the length of
> the shield section.
>
> I found out the hard way that if you trim the top part 1inch you kick it
> up the band and affect broad width as well.
>
> I used 10turns on the balun/coil part on a 60mm OSD PVC instead of 50mm.
>
> I have enough of that size PVC, to make about 10 of these…FREE to anyone
> needing it.
>
>
>
> https://vk1nam.wordpress.com/2015/08/16/sota-6m-coaxial-dipole-antenna/
>
>
>
> 1.       Don’t use coax with aluminum shield.
>
> 2.       If you use different size coax, you will need to put those specs
> in the coil calculator.
>
> https://hamwaves.com/inductance/en/index.html#input
>
> 3.       As long as you keep your designed coil at around 50mhz resonance
> you should be fine
>
> 4.       For the top part, I crimped a round terminal connector to the
> top, to allow easy connection
>
> of string or rope to hoist in the air. That did move the 1.1swr down the
> band about 100khz off 52mhz
>
> 5.       Note the info on the fact that if you want this self-supporting
> you enclose it in PVC, but have to adjust lengths
>
> of the elements if you go that route. Maybe one day, I will check into
> that.
>
>
>
> ...Max
>
>
>
>
>
> *From:* HiDARG-Members [mailto:hidarg-members-bounces at hidarg.org] *On
> Behalf Of *Randy Tomer
> *Sent:* Saturday, March 14, 2020 16:50
> *To:* HiDARG Members
> *Subject:* Re: [HiDARG-MEMBERS] 6 meter Vertical Dipole
>
>
>
> At vhf freq's the exact length you cut a wire to won't be real critical.
>
> Just in case anybody is concerned.
>
>
>
> R
>
>
>
> On Sat, Mar 14, 2020 at 4:42 PM RICH LOVIN <richlovin at gmail.com> wrote:
>
> Max,
>
>
>
> How about a construction diagram???
>
>
>
> Rich
>
>
>
> On Sat, Mar 14, 2020 at 4:27 PM Mike Williams <kb7klt at gmail.com> wrote:
>
> I'll see what I can get up for 6meter...ssb or fm?   Both?
>
> de Mike KB7KLT
>
>
>
> On Sat, Mar 14, 2020, 2:16 PM Max Vaughan bb <maxv at bendbroadband.com>
> wrote:
>
> OK made a 6m vertical dipole end fed, attached is the SWR details over the
> 6m band.
>
> Pretty happy with the results….I had the lowest swr right at 52.00 but I
> added a ring on top for a support and that moved it down the band.
>
>
>
> HiDARG is looking to start up a 6m net for testing out who can hear who.
>
> If interested, let me know, and more details to follow as to when where
> etc.
>
> Anyway in the process of building another one as this one is already given
> away.
>
>
>
> 73
>
> Max Vaughan KF7MAX  Secretary
>
> High Desert Amateur Radio Group
>
> PO Box 723
>
> Bend, Oregon USA   97709
>
> 541-706-1475
>
>
>
> www.hidarg.org
>
> maxv at horizonps.com
>
> kf7max at arrl.net
>
>
>
>
>
>
>
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