I believe the tribander used at WRTC was a touch different than the Navassa5. I
think WRTC stocked up when Cycle 24 was still supplying the TX 38, or when DX
Engineering was supplying it. The JK Tribander, which isn't a five-bander like
the Navassa5, is much like the TX38, with 2els on 15 and 20 and 4 els on 10.
The Navassa5 has 2els each on five bands, six if you get the 6m add-on.
73, Kelly
ve4xt
Sent from my iPhone
> On Jun 23, 2015, at 21:30, "Jeff AC0C" <keepwalking188@ac0c.com> wrote:
>
> If you need an endorsement, I believe this antenna was the choice of the 2014
> WRTC. It was made originally by Cycle 24 but later the designer hooked up
> with JK to do the builds.
>
> 73/jeff/ac0c
> www.ac0c.com
> alpha-charlie-zero-charlie
>
> -----Original Message----- From: Rick Stealey
> Sent: Tuesday, June 23, 2015 9:02 PM
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] JK Navassa antenna
>
> ve4xt (A ham with obvious extraordinary expertise associated with all things
> electronic, with a call like that) writes:
> "i would disagree: the dBi numbers seem in line with other trapless 2-el
> designs, such as the C3 or XR3."
>
> Tom, N6BT in his book Array of Light, goes to great lengths to specify the
> parameters associated with gain specs. Good stuff, well known.
> But then he goes on to claim that his 2 element designs will beat any trapped
> tribander regardless of size! Who knows? But It doesn't appear as if Ken of
> JK Antennas has done anything to distort the gain figures right from the
> highly respected NEC4 model from which his antennas are built. What else
> could you ask for? No wild claims, no marketing hype. Isn't this what we've
> been demanding of antenna manufacturers for 50 years?
>
> Rick K2XT
>
> By the way, sorry that I am unable to delete the text below. Hotmail does
> not give me an option that I can find.
>
>> From: ve4xt@mymts.net
>> Date: Tue, 23 Jun 2015 17:41:49 -0500
>> To: samsadventure@gmail.com
>> CC: towertalk@contesting.com; mathenyr@marietta.edu
>> Subject: Re: [TowerTalk] JK Navassa antenna
>>
>> i would disagree: the dBi numbers seem in line with other trapless 2-el
>> designs, such as the C3 or XR3.
>>
>> They’d be way high if they were quoted as dBd numbers, but take off the,
>> what, 2.4 dB, to get to dBd and 4 dB and change sounds reasonable. At least,
>> way more reasonable than, say, 8 dBd that some three-element trapped
>> tribanders pretend to have...
>>
>> 73, kelly
>> ve4xt
>>
>>
>> > On Jun 23, 2015, at 3:55 PM, <samsadventure@gmail.com> >
>> > <samsadventure@gmail.com> wrote:
>> >
>> > no, but the claimed gain for 2 elements on each band seems high
>> >
>> >
>> >
>> >
>> >
>> >
>> > Sam N5FO
>> >
>> >
>> >
>> >
>> >
>> >
>> > From: Ralph Matheny K8RYU
>> > Sent: Monday, June 22, 2015 12:29 PM
>> > To: towertalk@contesting.com
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > Does anybody have any direct experience with this antenna? I looked
>> > at it at Dayton, as an item for our club to purchase, and I'm wondering
>> > how it works out for real users.
>> >
>> > de K8RYU
>> > _______________________________________________
>> >
>> >
>> >
>> > _______________________________________________
>> > TowerTalk mailing list
>> > TowerTalk@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|