[TowerTalk] JK Navassa antenna

[Jeff AC0C]

Kelly,

Yes, you are right.  I was mixing the two.  The TX38 was the WRTC variant. 
Sorry for the confusion.

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie

-----Original Message----- 
From: ve4xt at mymts.net
Sent: Tuesday, June 23, 2015 9:36 PM
To: Jeff AC0C
Cc: Rick Stealey ; towertalk at contesting.com
Subject: Re: [TowerTalk] JK Navassa antenna

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
>> > _______________________________________________
>> >
>> >
>> >
>> > _______________________________________________
>> > TowerTalk mailing list
>> > TowerTalk at contesting.com
>> > http://lists.contesting.com/mailman/listinfo/towertalk
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk at contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk