[NLRS] Those wind profiler 222 beams that were available backwhen...

Tue Jul 7 13:59:08 EDT 2020

Bruce,

If the elements are large diameter tube with some really beefy element 
to boom clamps then those are 222 antennas. John, KB9TLV had a line on 
those and bought up a bunch of them - I think they came from somewhere 
down by Madison.  I have several of them myself.  There weren't all that 
bad of antennas.

Charlie, N0AKC

On 7/7/2020 09:50 AM, Jon Platt via NLRS wrote:
> 222 yagi elements will roughly be around 23 to 26" in length.  So I would guess that that 10 element yagi is indeed a "222" yagi albeit D8 at 19.25" is pretty short, so its probably a "broadband" 222 yagi intended to cover FM as well.  Probably not optimized for 222 weak signal work, but hey, its got gain!
> The antenna with the 33.5" elements appears to be made for something roughly around 176 MHz.   What is there?  Business band?
> For the vertical, measure the length of the radials.  They will be 1/4 wavelength on the frequency of interest.  The vertical part is some type of collinear, but the radials are 1/4 wavelength.
> 73, Jon
>
>
> -----Original Message-----
> From: Bruce Richardson <w9fz at w9fz.com>
> To: nlrs at mailman.qth.net
> Sent: Mon, Jul 6, 2020 11:08 pm
> Subject: Re: [NLRS] Those wind profiler 222 beams that were available backwhen...
>
> Hi Donn,
>
> Good point and a tiny bit of data I failed to include.  My notes here say
> that on the beefy one that I think is the "wind profiler", the first
> director (D1) in front of the DE is 33.5".
>
> On the other antenna that I think is 222 (10-ele), the D1=24" and the
> D8=19.25"
>
> I don't expect that to be enough info. I will collect more data the next
> time I'm in the barn.
> Thanks for your thoughts.
> 73
> Bruce W9FZ
>
>
> -----Original Message-----
> From: nlrs-bounces at mailman.qth.net <nlrs-bounces at mailman.qth.net> On Behalf
> Of WA2VOI, Donn
> Sent: Monday, July 6, 2020 10:56 PM
> To: Bruce Richardson <w9fz at w9fz.com>; nlrs at mailman.qth.net
> Subject: Re: [NLRS] Those wind profiler 222 beams that were available
> backwhen...
>
> Hi Bruce.
>
> Measurements would help: first three elements (reflector, driven el & 1st
> director) and spacing of same.
>
> I don't know of a "wind profiler" in the 220 region but it  possible.  There
> is (was ?) one in SW MN at 449 MHz (in the Mil band).  Allocation table says
> "Government - Fixed and Mobil" between 225 and 328 MHz and "Non-government"
> with no classifier.  A note says "FAA provides air traffic control
> communications to the military services on selected frequencies in this
> band."  I suppose that could mean wind shear data.  Also, isn't 243 MHz a
> military airborne Emergency channel ?
>
> They look like nice antennas, especially the 10 el.
>
> 73 Donn
> WA2VOI/0
>
>
> ----- Original Message -----
> From: "Bruce Richardson" <w9fz at w9fz.com>
> To: <nlrs at mailman.qth.net>
> Sent: Tuesday, July 07, 2020 2:43 AM
> Subject: [NLRS] Those wind profiler 222 beams that were available
> backwhen...
>
>
>> Looking through antennas (in the barn), I find two or 3 antennas that are
>> not easy for me to identify.
>>
>> I was told by the previous owner that one of them was the "222 wind
> profiler
>> antennas" that were available back 15 years ago or so.
>>
>> How many elements did those antennas have?  I've got a stout/beefy 6
> element
>> that I think is the one but I want to be sure.
>> http://w9fz.com/tower/profiler_223_vertical_1.jpg
>> http://w9fz.com/tower/profiler_223_vertical_b_1.jpg
>> http://w9fz.com/tower/profiler_detail_1.jpg
>>
>> Two other antennas I can't identify. A UHF vertical that I have not
> measured
>> with an analyzer.
>> http://w9fz.com/tower/uhf_vertical_1.jpg
>>
>> I think this is a 223 antenna, but not sure:
>> http://w9fz.com/tower/223_vert_beam_1.jpg
>> http://w9fz.com/tower/223_vert_beam_b_1.jpg
>> http://w9fz.com/tower/223_vert_beam_detail_1.jpg
>>
>> Any thoughts on these three?  Thanks for looking.
>> 73
>> Bruce W9FZ
>>
>>
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