FYI.........
Anyone in need of a Tornado Tuner I have one that's never seen daylight.
Changed directions from an M2 rotary dipole to a vert 4sqr array.
I don't have controller. Will make a good deal I can assure you in hopes
someone
will use it.
catch me off Twr Tlk
Tim , AB4B
Rogersville,AL
On Mon, Oct 9, 2017 at 10:34 AM, Grant Saviers <grants2@pacbell.net> wrote:
> My Tornado does not have any sliding contacts such as in a mobile loading
> coil. Instead it compresses and expands a solid connections at the ends
> wound copper tubing coils. This gives a 2:1 inductance range which is
> enough to cover more than 3.5 to 4.0 MHz on my 86' dipole, no hats.
>
> I worked up a model to build a 2 element beam this way to tune the entire
> band, but decided to buy the JK 2L with fixed and relay switched loading
> coils instead.
>
> Might be a fun project to build a 3L 80m out of the JK shorty Tornado
> dipoles.
>
> Grant KZ1W
>
>
> On 10/9/2017 3:31 AM, Richard Thorne wrote:
>
>> Hi Bob,
>>
>> Yes the tornado tuner is a dual motorized coil. It works just like a
>> mobile coil antenna.
>>
>> Rich - N5ZC
>>
>> On 10/8/2017 8:25 PM, Bob K6UJ wrote:
>>
>>> Rich,
>>> I looked at the stack on QRZ.com. Great station Rich !I can't make out
>>> the JK801 in the picture.
>>> The specs on JK site show the T-hats, very nice ! Anda loading coil
>>> (motorized ?)
>>> BobK6UJ
>>>
>>>
>>> From: Richard Thorne <rthorne@rthorne.net>
>>> To: towertalk@contesting.com
>>> Sent: Sunday, October 8, 2017 4:58 PM
>>> Subject: Re: [TowerTalk] 80 Meter yagi question
>>> I can recommend the 80m JK801 rotatable dipole.
>>>
>>> I have one at 138' and so far so good. It's only been up since July so
>>> I'm looking forward to the fall/winter DX season. The antenna does not
>>> use coils, it uses T-hats towards the ends. There isn't much droop to
>>> it(note there is no truss cable) and it has handled the winds here in
>>> Amarillo nicely.
>>>
>>> There's a picture of my JK stack on my qrz page. The dipole is at the
>>> top followed by a Mid-Tri Tribander, JK3040SR 40/30 yagi, another
>>> Mid-Tri and finally a F12 WARC 2/2 at about 55' to cover 12/17. I'll
>>> probably add another Mid-Tri when 10 meters is more active.
>>>
>>> The only interaction I've had is on 20m, I had to move the JK801
>>> parallel with the other booms to fix the 20m swr issue. At the time of
>>> installation the tornado tuner was not active. I'm going to climb the
>>> tower and have a buddy monitor the 20m swr while I move the JK801
>>> parallel with the elements.
>>>
>>> Each half of the JK801 is 27' long and with the T-Hat it probably acts
>>> as a half wave on 20m. I'm hoping with the tornado tuner on line, that
>>> the 20m portion of the upper Mid-Tri won't be affected. I'd like to get
>>> this resolved from an SO2R stand point. More than likely propagation
>>> will be coming from the same direction on both 40 and 80 which requires
>>> both antennas to be pointed in the same direction vs a 90 degree offset.
>>>
>>> I've worked lots of DX on FT8 with it along with some phone and cw.
>>>
>>> I can cover the entire 80m band from below 3.5 mhz to above 4.0 mhz via
>>> the tornado tuner and the mfj-1924 controller.
>>>
>>> I have the following swr bandwidth as follows:
>>> - 1.5:1 40 khz
>>> - 1.75:1 60 khz
>>> - 2.0:1 80 khz
>>>
>>> I use 5 of the MFJ memories to cover cw and 5 for SSB then fine tune if
>>> needed with the up and down buttons. I may change that to 4 on CW and 6
>>> on SSB.
>>>
>>> Rich - N5ZC
>>>
>>> On 10/8/2017 6:32 PM, Bob K6UJ wrote:
>>>
>>>> Hi John,I'm assuming you want a loaded shortened dipole.
>>>> I would suggest contacting JK Antennas and ask Ken to fab two of his
>>>> loading coilsfor a shortened 80M rotary dipole. His loading coils are
>>>> outstanding. Made with solid
>>>> aluminum rod, not tubing, and the connector blocks on the end of the
>>>> coils are welded on.Less connection worries. Take a look on his website at
>>>> how he makes these loading
>>>> coils, very impressive. For that matter ask him about a complete 80M
>>>> rotatable
>>>> dipole if you aren't making one yourself.
>>>> I wish my tower would handle an 80M dipole along with the existing load
>>>> or I would
>>>> be thinking of doing an 80M dipole too.I have a 4EL 20M yagi at 108 ft
>>>> and a 3EL 40M yagi at 96 ft. That will be my upperband antennas during the
>>>> low sunspot cycle years. I have an 80/160 dual band
>>>> inverted L to cover these bands.
>>>>
>>>> BobK6UJ
>>>>
>>>> From: john nistico <electric911inc@hotmail.com>
>>>> To: towertalk <towertalk@contesting.com>
>>>> Sent: Sunday, October 8, 2017 12:19 PM
>>>> Subject: [TowerTalk] 80 Meter yagi question
>>>> So my Virginia towers are almost completed and most of the
>>>> antennas are ready to install. I am thinking of adding a rotatable 80 meter
>>>> yagi on one tower. Any suggestions?
>>>>
>>>>
>>>> John J. Nistico
>>>> 911 Electric Inc.
>>>> 516.325-8993
>>>> _______________________________________________
>>>>
>>>>
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