Comments for K4UPG.COM http://k4upg.com Adventures in Ham Radio QRP Portable Ops! Tue, 02 Dec 2014 21:39:30 +0000 hourly 1 Comment on What’s Your Favorite HF Portable Antenna? by Garth http://k4upg.com/2009/12/16/whats-your-favorite-hf-portable-antenna/comment-page-1/#comment-9542 Tue, 02 Dec 2014 21:39:30 +0000 http://k4upg.com/?p=278#comment-9542 I’m just getting started in QRP portable. The only antenna I’ve used so far is an EFHWA matched by a SOTA tuner. I worked the East coast from N. Utah. I would like to try the PAC-12, just because it sounds like a fun home brew project.

Garth, KF7ATL

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Comment on Mag Loop First Attempt by Myles VK6ZRY http://k4upg.com/2009/09/05/mag-loop-first-attempt/comment-page-1/#comment-6270 Fri, 14 Mar 2014 12:08:23 +0000 http://k4upg.com/?p=174#comment-6270 https://plus.google.com/communities/109283065808971118728

These Hams all are portable.

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Comment on Mag Loop First Attempt by Myles http://k4upg.com/2009/09/05/mag-loop-first-attempt/comment-page-1/#comment-6062 Sat, 28 Sep 2013 03:26:40 +0000 http://k4upg.com/?p=174#comment-6062 http://img171.imagevenue.com/img.php?image=20590_2elMagloop_Indoors_122_1010lo.jpg

http://img209.imagevenue.com/img.php?image=31946_SIMPLE_MAGLOOP_FOR_WSPR_122_252lo.jpg

By inserting different lengths of coax inner and with a link joining to the other end, I tune the 2 el loop to Wspr frequencies.

The 2 el magloop tunes to 20M, 30M, 40M, and 60M.

My outdoor loop is a single turn, with no tuning cap its resonant at 33MHz.

By adding capacitance I have run it down to 80M @ 100 Watts.

Capacitors I make using PET from large soda bottles (2 Litre)and Pepsi cans, also use coax inner slid into one end.

For low Watts on Wspr typically 5 Watts, simple butterfly caps will suffice.

http://wsprnet.org/drupal/node/3179

http://imageshack.us/photo/my-images/295/1672mmdiamagloop.jpg/

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Comment on K4UPG FOBB 2013 Antenna on da Ground! by Pete - W1PNS http://k4upg.com/2013/07/31/k4upg-fobb-2013-antenna-on-da-ground/comment-page-1/#comment-5911 Thu, 01 Aug 2013 00:31:49 +0000 http://k4upg.com/?p=1080#comment-5911 Thank you for the FoBB contact!

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Comment on Portable projects by Jennifer http://k4upg.com/2009/08/23/portable-projects/comment-page-1/#comment-5871 Mon, 22 Jul 2013 11:26:46 +0000 http://k4upg.com/?p=145#comment-5871 A quick addition to my comment. The wire dipole I mentioned is center fed rather than end fed like yours.

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Comment on Portable projects by Jennifer http://k4upg.com/2009/08/23/portable-projects/comment-page-1/#comment-5870 Mon, 22 Jul 2013 11:23:05 +0000 http://k4upg.com/?p=145#comment-5870 Very nice! I am working on the very same sort of antenna. I did a quick and dirty version with small lengths of 1/2 inch PVC to wind the extra wire around. For the wire I am using 22 guage speaker wire since it was what I had on hand. I have enough wire to go down to 40 meters. My next upgrade to the antenna will be a couple of those clothes line reels. I used a feed point very similar to yours. The only differences are that mine isn’t a balune and I used an SO-239 instead of a BNC. A BNC to binding post adapter also works great as a feed point. I currently use one of those on my 10 meter dipole without a balun. I am not sure how much power it can handle, but I am limited to QRP (except for 25 watts on my RadioShack HTX-10); so it works fine for me.

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Comment on What’s Your Favorite HF Portable Antenna? by Vit http://k4upg.com/2009/12/16/whats-your-favorite-hf-portable-antenna/comment-page-1/#comment-5372 Tue, 26 Feb 2013 07:33:27 +0000 http://k4upg.com/?p=278#comment-5372 Hello to all, after years of portable activities (mainly IOTA, …) my most favorite antenna is G5RV and 2x 27 m extended ZEPP, depending on a room which is available.

Regards from Vit, OK5MM

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Comment on Hamcation 2013 and QRP by kmack http://k4upg.com/2013/02/10/hamcation-2013-and-qrp/comment-page-1/#comment-5318 Mon, 11 Feb 2013 13:26:29 +0000 http://k4upg.com/?p=1032#comment-5318 Hi Mike! Wish you could have joined the fun with us! The Alex Loop is really simple to set up, hears very well and gets out amazingly well too. It is a good complement to the KX-3 I think and is a nice quick setup for antenna restricted guys like me. Quality construction and packaging make it a nice antenna. Stay warm up there in the north good friend! 72, Kelly K4UPG

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Comment on Hamcation 2013 and QRP by Mike http://k4upg.com/2013/02/10/hamcation-2013-and-qrp/comment-page-1/#comment-5316 Mon, 11 Feb 2013 02:15:53 +0000 http://k4upg.com/?p=1032#comment-5316 I have heard lots about he Alex loop and that it is both portable but at the same time works great! Very nice pic’s of the event and nice to see the interest in QRP op.
Mike

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Comment on Favorite Portable Antenna Launcher? or Story? by Jim WB0IYC http://k4upg.com/2010/01/03/favorite-portable-antenna-launcher-or-story/comment-page-1/#comment-5088 Tue, 25 Sep 2012 15:47:33 +0000 http://k4upg.com/?p=297#comment-5088 I would like to plug the Joplin ARC launcher *kit* that they have been selling for over a year. This project was so popular with club members that they decided to offer it to other hams via their website. They have shipped hundreds of these kits. Mine is one of the first built and is featured in the video.

This simple kit comes partially assembled and can be finished with some PVC glue in about an hour. Add a closed faced spincast reel (found at Walmart for $5 or in your closet) and a hand operated tire pump, and it is ready for action. Mine will launch projectiles over the tops of trees with good control. I get about 70′ with about 11 strokes! I did not glue the barrel, so it breaks down to about 24″ long to fit in the bag.

It includes two projectiles, streamers, cable ties for mounting the reel, and even snap-swivels for connection to the tag line. Instructions are included. They have a video on the Joplin ARC website showing it in action. Cost is $35 at hamfests, but more when shipped (see website). You can order using PayPal or send them a check.

See it here:
http://www.joplin-arc.org

’73
Jim WB0IYC

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