[TowerTalk] JK Navassa antenna

[ve4xt at mymts.net]

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 at 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 at 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 at mymts.net
>> Date: Tue, 23 Jun 2015 17:41:49 -0500
>> To: samsadventure at gmail.com
>> CC: towertalk at contesting.com; mathenyr at 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 at gmail.com> > <samsadventure at 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 at 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
>> > _______________________________________________
>> >
>> >
>> >
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