Thanks All. I got some great on and off list responses.
Yes I believe the 40" length limit is a reasonable one. (I have found
carrying 48" mast sections via backpack to be a bit awkward for me.)
73
Mark S
VE7AFZ
Aligned Solutions Co.
mark@alignedsolutions.com
604 762 4099
> On Feb 15, 2018, at 7:17 AM, Bob K0NR - email list <list@k0nr.com> wrote:
>
> Zack,
>
> I'd be interested in the 144 MHz yagi design for backpack portable operating.
> Its got to be compact and easy to assemble, otherwise it tends to get left at
> home.
> For me, compact is nothing longer than 40 inches.
> (I'm actually thinking SOTA more than VHF contesting but I sometimes combine
> the two.)
>
> 73, Bob K0NR
>
>> On 15-Feb-18 7:57 AM, Zack Widup wrote:
>> I got a design from VE3BFM for a four-element 6m beam on a 13 foot boom.
>> It's a great performer. Since I operate portable 95% of the time, I built a
>> version I could quickly assemble and disassemble at a portable site. The
>> boom and each element is in two pieces. I never formally wrote up an
>> article about how to build it, but I did talk about it at the VHF forum at
>> Dayton a couple years ago. Maybe I should write it up.
>>
>> I have similar portable Yagis for 144 through 432 MHz. I can assemble and
>> disassemble them pretty quickly. My 144 MHz Yagi has six elements
>> wide-spaced on a 12 foot boom. I believe the gain predicted by Yagi
>> Optimizer is about 12 dBd. I haven't measured it yet.
>>
>> 73, Zack W9SZ
>>
>>
>>> On Thu, Feb 15, 2018 at 8:23 AM, jon jones <n0jk@hotmail.com> wrote:
>>>
>>> Mark:
>>>
>>>
>>> Another idea is to build your own portable 6 meter beam. I have found a 2
>>> element yagi is easy to build, break down and re-assemble quickly. A 2
>>> element yagi offers about 3 - 4 dB gain over a dipole. It is easier to put
>>> up and take down than a 3 el.
>>>
>>>
>>> I use one for my VHF contest and portable operations. A picture of it is
>>> in the NCJ March/April 2016 pp. 32. It works... have WAC with it on 6 with
>>> 100 W from KS on ssb/cw.
>>>
>>>
>>> A plan for one is here: http://www.qsl.net/k7yo/6m2Yagi.htm
>>>
>>>
>>>
>>> - Jon N0JK
>>>
>>>
>>>
>>>
>>>
>>> ________________________________
>>>
>>> Hi:
>>>
>>> I finally took delivery of a suitable LiPo battery to facilitate "back
>>> pack portable" operation at the 50 to 100 watt level. If any of my
>>> Canadian colleagues are interested I can provide the contact details for a
>>> Canadian distributor.
>>>
>>> At this point I'm planning on simply taking my 50 MHz three element beam
>>> apart and re assembling it on site. In my view the beam I have isn't
>>> really intended for that type of use and I'm curious if anyone knows of any
>>> suppliers for small 50 MHz beams that break down and re assemble quickly
>>> and easily. Google searching on my part didn't turn up anything that is
>>> currently in production.
>>>
>>> I'm hoping to shift my focus a bit this year and actually reach the true
>>> summit of at least one local mountain (vs simply driving most of the way up
>>> via logging roads.) Having this ability would also have been useful
>>> earlier this year when I had to abort my CO81 visit during the sept
>>> contest. In hindsight I suspect I could have activated the grid for a few
>>> hours on foot.
>>>
>>> 73
>>>
>>> Mark S
>>>
>>> Aligned Solutions Co.
>>> mark@alignedsolutions.com
>>> 604 762 4099
>>>
>>> ------------------------------
>>>
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>>> VHFcontesting mailing list
>>> VHFcontesting@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/vhfcontesting
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>
> --
>
> --
> Bob Witte K0NR
> bob@k0nr.com
>
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