I was particularly interested in the construction of the 66' DX Engineering
vertical, not to use as an actual vertical antenna, but to mount in a tripod on
my roof and then use it as a tall support for an 80M inverted vee. I figured an
aluminum mast (it doesn't have to actually be the full 66 feet tall) would be
stronger than buying one of those telescoping fiberglass poles that I see
frequently advertised on most of the ham radio web sites. They appear to become
pretty small at the top and can probably only support a number 18 to 22 wire
inverted vee for a field day weekend, at best. Just a sturdy, tall support for
a wire antenna was my real interest in considering this telescoping mast
project. My Buternut HF6V more than performs well for any DX I might want to
chase.
-----Original Message-----
>From: Jack/W6NF <vhfplus@bmg50.com>
>Sent: Mar 13, 2009 8:05 PM
>To: n8de@thepoint.net
>Cc: towertalk@contesting.com, N7KA@comcast.net
>Subject: Re: [TowerTalk] DX Engineering 66-Foot Vertical?
>
>On Fri, Mar 13, 2009 at 6:03 PM, <n8de@thepoint.net> wrote:
>
>> Let me calculate:
>>
>> 6 x 11 = 66'
>>
>> 64' vertical
>>
>> this means the TEN overlaps occupy only 2' ?
>>
>> 24/10 = 2.4 inches.
>>
>> I'd never put up a vertical with only 2.4" per overlap... disaster
>> looking to happen.
>>
>> Now, if there are 12 sections with 11 overlaps:
>>
>> 6 x 12 = 72'
>> 64' vertical
>>
>> 8' of overlap in 11 places
>>
>> 96/11 = about 9" per overlap.
>>
>> Much safer construction, in my humble opinion.
>>
>> 73
>> Don
>> N8DE
>>
>>
>> Quoting N7KA@comcast.net:
>>
>> >
>> >
>> > Tubing cost alone is $142.20 from DXE plus the mast kit comes with
>> > clamps. Not to bad a deal for the mast kit. Note that most tubing
>> > is slit at one end for use of "hose" clamps. It takes 11 6ft
>> > sections to be for 64ft vertical.
>> >
>> >
>> >
>> > Arne N7KA
>> > ----- Original Message -----
>> > From: "Jim Brown" <jim@audiosystemsgroup.com>
>> > To: "TowerTalk" <towertalk@contesting.com>
>> > Sent: Saturday, March 14, 2009 1:06:11 AM GMT +00:00 Monrovia
>> > Subject: Re: [TowerTalk] DX Engineering 66-Foot Vertical?
>> >
>> >
>> >> It would be interesting to see a printout of all the diameters,
>> >> lengths wall thicknesses and any other relevant info for each of
>> >> the aluminum tubing pieces that comprise one of these 66' vertical
>> >> antennas.
>> >
>> > Yes, it certainly would. But DXEngineering PAID an engineer to
>> > design that antenna, and they deserve to sell that product to
>> > recover their costs. It's what's called free enterprise.
>> >
>> > 73,
>> >
>> > Jim Brown K9YC
>> >
>> >
>> > _______________________________________________
>> >
>> >
>> >
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>> >
>> >
>> >
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>>
>>
>>
>> _______________________________________________
>>
>>
>>
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>
>I have two of the DX Engineering 65-foot vertical kits...one on 80-meters
>and one tee-loaded for 160. They both have 1/4-wave radials...40 on 80 and
>39 (at present) on 160. Both are mounted on 8-foot 4x4's set in concrete and
>pivot on long bolts. The performance of both is excellent with my first EU
>on 160 with this antenna...something I never was able to do with my
>inverted-L.
>
>The bottom sections are 5-6-inch overlap with diminishing overlap as you go
>up. I have the both antennas guyed with Dacron line at 3 levels, as
>recommended by DX Engineering, plus I have two extra guys at right angles to
>the tee-wires on the 160 antenna. I have experienced 65-70MPH (minimum)
>winds with no detrimental effects at all. Basically, I'm pretty happy with
>the verticals and have no qualms about the construction technique.
>
>--
>Jack, W6NF
>Silver Springs, NV
>DM09ji
>
>Migrating my e-mail to vhfplus@gmail.com. Please update you address book.
>Thanks!
>_______________________________________________
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