[TowerTalk] JK Navassa-5

[Ken Garg]

Joe,
All data is available at 50ft, 100ft etc. There is not much significant difference thats smoke and mirrors. The reason to show 100ft was taking into account an average ham shack with a coax run. Do you think there will be a significant difference in swr between 100ft and 50ft? Ot do you think that our coax has so much loss that we don’t see swr? Not sure of your point.  If measured swr at the feed point is 1.28:1, then the measured swr at 100ft will be approx 1.2:1 using RG213 as a coax.
The goal was to show a freespace design vs actual measured for the average ham on a simple page. If someone needs more details, they can always ask in an email through the website.

Thanks,
Ken

On Nov 27, 2014, at 2:12 PM, Joe Subich, W4TV <lists at subich.com> wrote:


> The swr curves for this antenna assembled out of the box at 36ft is
> presented here .. http://jkantennas.com/navassa-5-data.html

If the antenna is at 36 feet, why are you using 100 feet of coax for
the measurement?  Why not use 50 feet or calibrate out the losses and
present true "at the antenna" measurements?

73,

  ... Joe, W4TV


On 2014-11-27 12:34 PM, Ken Garg wrote:
> Happy Thanksgiving all !!
> A good friend alerted me to a posting by K9OM. His post starts as follows ..”Correct me if I’m wrong …”. Well, Dick you are WRONG.
> The JK Navassa-5 comes pre-drilled, pre-cuts tips from the factory. The user just needs to assemble the antenna. These antennas are made of the best quality hardware and rated heavy-duty. There are many other quality manufacturers in the Yagi antenna space and the Hams are left to some good choices. If you like the JK construction with machined saddles, and quality hardware, including the “mast plate" all available for $1185 compared to others, then you will buy this antenna. The JK construction and mechanical robustness speaks for itself and folks that have it will speak to it. The swr curves for this antenna assembled out of the box at 36ft is presented here .. http://jkantennas.com/navassa-5-data.html
> 
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