Comments for NT1K - Welcome http://nt1k.com/blog My Experience With Ham Radio Wed, 08 May 2013 19:35:33 +0000 hourly 1 http://wordpress.org/?v=3.5.1 Comment on NT1K Op-Ed: Preppers and Ham Radio by Dave http://nt1k.com/blog/2013/nt1k-op-ed-preppers-and-ham-radio/#comment-5518 Dave Wed, 08 May 2013 19:35:33 +0000 http://nt1k.com/blog/?p=1143#comment-5518 I put together a go kit more from having the fun of operating at a remote location than worry about an EMP pulse or something causing doomsday.

Anyways everybody knows we stand to lose more in a zombie apocalypse.

]]> Comment on OSJ-Pole – Adjustable by NT1K http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5513 NT1K Wed, 08 May 2013 13:16:22 +0000 http://www.n1bmx.com/blog/?p=213#comment-5513 If there was no demand for perfection then we wouldn’t have a lot of the amazing technology that we’re dependent on today. I also want to know that my money is well spent. I would rather apply it to something that will work instead of taking a “Shot in the dark” on something that might work. However if you don’t take risk then you never know.

I wish I can answer your questions when it comes to the electrical/RF properties of the antenna. At this point in my life I do not have the equipment or even the proper knowledge to provide answers. I’m hoping that at some point I will but it seems to be far away. If you do some research of this particular antenna, you will find the write-ups and controversies from people who know a lot more about antennas.

From a mechanical standpoint, It’s a decent antenna for the price. Weakest point is being the SO-239 connector/adapter and it’s plastic insulators which is not really an issue. Even with that I’ve had this antenna outdoors for over 10 years w/o issue and worked fine. It’s no Yagi or commercially made antenna with gain but it’s better than a ground plane, dipole and other antennas of the sorts.

I am looking forward to your results.

Thanks for reading!
Jeff

]]> Comment on OSJ-Pole – Adjustable by Mark Richards http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5512 Mark Richards Wed, 08 May 2013 11:57:23 +0000 http://www.n1bmx.com/blog/?p=213#comment-5512 Jeff,

Sorry if I came across as one who demands perfection :) Indeed it is kind of you to share this project with everyone, and I am grateful.

And thanks for clarifying that which escaped me.

I will give this a try and post back here as to the results.

73,
/m

]]> Comment on NT1K Op-Ed: Preppers and Ham Radio by Couldn’t have said it better myself… | KK4DSD http://nt1k.com/blog/2013/nt1k-op-ed-preppers-and-ham-radio/#comment-5505 Couldn’t have said it better myself… | KK4DSD Wed, 08 May 2013 03:58:04 +0000 http://nt1k.com/blog/?p=1143#comment-5505 [...] Jeff, NT1K nailed it in his recent blog posting: [...]

]]> Comment on OSJ-Pole – Adjustable by NT1K http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5503 NT1K Wed, 08 May 2013 03:47:39 +0000 http://www.n1bmx.com/blog/?p=213#comment-5503 The DE is insulated from the rest of the stubs. The bracket/base and the stubs are “Connected” to the angle when they are threaded through and tightened with the jam nuts as shown on my blue prints as well as the source of where I got the dimensions from.
I would also assume the spacing of the holes and size and area of the base/bracket apply to the resonate frequency of both 2M and 440Mhz and it’s SWR. I am not an EE and I am not the designer of this antenna so I can not give you definite answers. Sorry if I am coming off as rather rude but you are over complicating a $15 antenna. I understand you want to get the best “Bang for your buck” and I understand you want to have your “ducks in a row” but this antenna is by no means comparable to Yagi or even a Loop when it comes to gain and performance. I tried modeling this antenna but had a difficult time in 4NEC2. This person modeled it and hopefully it will provide you a little more information.

Just like with other amateurs before me, I tinkered with this antenna. When I saw the Adjustable J-Pole antenna on the Buxcomm page, I thought I could apply it to the OSJ-Pole as an alternative to cutting/grinding the elements and the adjusting seem to work as it show a difference on my SWR bridge. I wish I had the knowledge and equipment to give a in-depth review of the antenna and my modifications. I thought the least I can do is to make an actual blue print (or something close to it) that gave a better visual idea how to make the antenna than what I had to go by.

Your starting to dive into an area where I wish I can provide you the facts with the information to back it up. I guess when it comes down to it, you’ll have to build the antenna and see for yourself. Worst thing that might happen is that you’ll be out $15-25. Even though it’s not my design (I want to make that clear), I’ve had many people come back with positive results. However I no one has came back about the adjustable version.

Ty,
Jeff

]]> Comment on Open Stub J-Pole Project – Completed (Many times) by OCF Dipole antenna question - The RadioReference.com Forums http://nt1k.com/blog/2011/open-stub-j-pole-project-completed-many-times/#comment-5490 OCF Dipole antenna question - The RadioReference.com Forums Tue, 07 May 2013 15:30:47 +0000 http://www.n1bmx.com/blog/?p=97#comment-5490 [...] has the parts. Emergency Amateur Radio Club – Hawaii – Homebrew Projects here is another one http://nt1k.com/blog/2011/open-stub-…ed-many-times/ __________________ Don't confuse my personality with my attitude. My personality is who I am. My [...]

]]> Comment on OSJ-Pole – Adjustable by Mark Richards http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5487 Mark Richards Tue, 07 May 2013 12:54:50 +0000 http://www.n1bmx.com/blog/?p=213#comment-5487 Jefferey,

Thank you. I am keen to build this.

If you might clarify something… it seems the driven element (where the coax terminates) is quite naturally not connected to the aluminum base (well, the “ground” or shield of the coax is). But what of the stubs? These appear to be simply screwed into the aluminum base.

If so, then does not the size, angle, and mounting of this base have some bearing upon the perhaps rather complex relationship between the driven element and the stubs?

Trying to source the aluminum angle I have decided to resort to some scrap which does allow for the exact relationships between the vertical elements but does not come close to matching the overall size of the design. So wondering if this will prove problematic.

Of course, no better way to find out than experimenting, but I’d rather have a good basis to do so before I start :)

]]> Comment on OSJ-Pole – Adjustable by NT1K http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5484 NT1K Tue, 07 May 2013 11:48:37 +0000 http://www.n1bmx.com/blog/?p=213#comment-5484 I would assume yes. I never tried it but it makes sense. If I ever make another one, I will post information about it.
From what I’ve read and done, the J-Pole does not need ground/grounding and it doesn’t require it to insulated when mounting.
You can refer to Arrow Antennas Website and look at the manual for the OSJ-Pole since it’s the same. If you’re tight on time, you can purchase one from them. However they don’t sell an adjustable one (I do not work for or compensated by Arrow, they make decent antennas)

]]> Comment on OSJ-Pole – Adjustable by Mark Richards http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5469 Mark Richards Mon, 06 May 2013 12:03:07 +0000 http://www.n1bmx.com/blog/?p=213#comment-5469 “Yes, the same can be applied to the dual band version to adjust the SWR for both 2M and 440Mhz.”

Therefore an adjustment feature for each of the two stubs will be effective?

]]> Comment on OSJ-Pole – Adjustable by NT1K http://nt1k.com/blog/2011/osj-pole-adjustable/#comment-5468 NT1K Mon, 06 May 2013 11:22:41 +0000 http://www.n1bmx.com/blog/?p=213#comment-5468 Yes, the same can be applied to the dual band version to adjust the SWR for both 2M and 440Mhz.

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