Archive for the ‘antennas’ Category

Central FL QRP Group

Calling all Central Florida QRP Ops… there’s a small group of us in Orlando that like to gather together on the 2nd Saturday of the month for some breakfast, show n tell, and portable ops in a nearby park.

CFQRP1b 111310

Antenna Tweakers

cflqrp

Operating site

K3RLL

K3RLL in action with KX-1

We just had a nice time of antenna tweaking and operating down by Lake Sylvan. There’s still room for more of you, so mark your calendars and plan to join us on the 10th of December 2010. Leave me a comment if you’d like me to send an email reminder to join us, or if you’d like to get on our list for future outings. Snowbirds are welcome too!

72,

Kelly K4UPG PB #173

Good Customer Service is NOT Dead!

Recently I began a project for a wire vertical antenna and it called for a 20 ft fiberglass or non-conducting pole/mast of some sort. Not to worry as I have a trusty 20 ft Jackite pole in a nice green color. I put the antenna together but the vertical wire was too long and so there was considerable slack wire swinging in the breeze. After some head scratching, I measured my 20 ft Jackite and found it was only 18 ft long!!! YIKES! Did it shrink?

My 20 Foot Jackite Pole

Did it shrink? Nope, it is all good to go!

Thanks to the internet, I was able to send an email to Jackite products and ask if that was normal. In a short time, I received a very nice response from the Jackite vp and an offer that was over the top and way more than I was expecting. It was more than I could accept as I’ve been quite happy with the product otherwise. Turns out that it was a small quality control issue that I can tweak and correct personally.

I get no monetary or other gain out of this, but did want to give credit where credit is due. This level of customer support is often lacking in today’s busy world. I am glad to give a shout out to this company and its products! They do the job and the company stands behind them with good service. Outstanding job Jackite!

72,

Kelly K4UPG PB #173

I am CAD afflicted

Yep, it is confirmed now for sure. Compulsive Antenna Disorder has haunted me since I was first licensed and ran a coax fed 80 meter dipole on multiple bands without a tuner.  The first time the symptoms were noticed by my family and friends was when I got a couple OO tickets for out of band harmonics. Hmmmm… what’s up with that? So a bit of reading and the antenna tweaking began and that’s when it all started.

Soon thereafter I tried to load up a nifty pin from my Junior Prom Boutonnière that reminded me of a triple stacked halo for 1296 Mc (MHz for the newer ones amongst us).  Then it was the handheld yagis for 432 Mc that we used with some military surplus gear that used dynamos so we could chase tornadoes. (We thought if it bounced off the moon, it should bounce off of a tornado!) The saucer sled that became a parabolic for listening to satellite telemetry and on it goes… Compulsive Antenna Disorder has had a firm grip on me for some time now.

Antenna Farm

Am I dreaming? Thanks wiki images!

As a QRP operator, I am always looking for more antenna power. I know that somewhere out there simply MUST be a silver bullet, that magic QRM and pileup busting antenna that makes my 2 watts output sound like a full gallon.

I can say one thing for sure, I know a lot of non-silver bullet antennas, as I have a box full of them.

But they still make a few QSO’s at times and I’m having fun along with a bit of frustration and disappointment as I deal with my CAD affliction.

I’m told that much like telegraph key collectivitis there is no known cure or relief. I share in your grief brothers and sisters…

72,

Kelly K4UPG PB #173

Giving Out Points Again!

Nice weather and an open schedule allowed for some radio time this weekend. The QRP ARCI Fall QSO Party made some buzz so I loaded up the gear and headed out by the lake.  I put up an 88ft doublet in an inverted vee. I shoot a line over a tree limb at about 40ft and use that for the center and have two 17ft Crappie Poles that I use for end supports. That allows me to reorient the antenna to suit the conditions.

Ground Mount Closeup

Ground Mount Closeup

One of the things I threw together is a simple mount for the crappie poles. I use a 2ft piece of PVC with a couple bolts inserted at right angles to one another at the base to keep the pole from going all the way through to the ground. The PVC is attached to a 3ft piece of aluminum angle iron that with 3 stainless steel hose clamps.

crappie pole

Crappie Pole End Supports

The poles are pretty limber and take a bit of a bend but do a good job of handling the 24 gauge teflon wire I use.  As you can see in the pictures, the mounts do the job and don’t cost as much as commercial counterparts.

So it was a good day and I made a few contacts, enjoyed the outdoors and had a nice picnic lunch with my XYL down by the lake between QSO’s.  The bands were pretty decent and I gave points to 20 of the more serious contestants out there.

72,

Kelly K4UPG PB #173

p.s. The Polar Bears will be out and on the air next weekend. Give a listen, hear?

QRPSPOTS.COM and IHAB Do it Again!

Wow! Great way to bring together a lot of ham radio ops on a Saturday using all sorts of technology!  Way to go! QRPSPOTS.COM is normally used by QRP ops to spot each other when we are out operating portable or to alert others of band openings. It was ALIVE with reports and updates from all over the USA and even a few DX ops adding input too! In addition, several QRP reflectors were buzzing with updates and info. What a great community effort this turned out! Congrats to all and thanks to QRP ARCI for helping get the word out.

iHAB Logo

Iowa High Altitude Balloon Project

One of the 4 States QRP bunch, Terry WA0ITP, provided the 20m beacon again and has some great info on his informative website.

But for me, the coolest thing was listening in on the streaming webcast of  VE3EN and his wonderful IC-7700. Sure wish I had thought of recording a bit or doing a screenshot to share here. But what a treat to listen in and hear the beacon’s signal right up until touchdown. Thanks Kevin for a fun way to eavesdrop on this event since the lawn mowing crew took over my condo’s yard and didn’t allow me to put an antenna out today. There is a ton of info and creative website construction on Kevin’s website and it is worth spending some time looking at the solar cycle data.

Congrats to the team for a successful event today and for bringing so many hams together for a good learning experience and something out of the ordinary. Well done W0OTM, well done indeed!

Stealth Antennas

Today sees the publication of a new RSGB book by Steve Nichols, “Stealth Antennas.” I haven’t seen the book myself, but I was asked by Steve to contribute a description of my own stealth antenna farm as one of the practical examples. It remains to be seen whether this entitles me to receive a free copy. 😉 It isn’t even in the RSGB Bookshop yet, but hopefully it soon will be.

I think this is an important book which addresses an issue that I believe many new radio amateurs (and many not so new, such as myself) find themselves faced with, that of what to do when circumstances prevent the erection of the kind of antennas so many experts say you need. I hope the book helps to dispel the impression created by many that in order to enjoy the hobby one needs a beam mounted on a huge tower, or at least a full size dipole up high and in the clear. It would be nice if you could have one of these, but it certainly isn’t the end of the world if you can’t.

Duh: Learning Curve #6 What’s a ham to do?

Here’s my dilemma:

I am a rookie homebrewer. My kit experience is good, but I have struggled to build direct from schematics. Part of it is my lack of ability to conceptualize the physical layout and part of my challenge is lack of building experience and mentoring.

Boxes

What should I use?

Several of my antenna tuner projects seem to have a TON of hand capacitance effect. They are built in plastic cases, some from the Shack and some from the local surplus shops and hamfests. Most commercial tuners are built in metal cases and I wonder if that would eliminate the sensitivity to the tuning hand?

I have a couple metal enclosures I can use and a great ham friend sent me some thin copper with adhesive tape on the back.  I am thinking of slapping some copper tape inside the plastic cases and see how it works.

So, I am putting it to the vote:

Note: There is a poll embedded within this post, please visit the site to participate in this post’s poll.

And for the record, the vote in the poll  for best ham radio QTH in the US was won by West Virgina. Here is the top 5:

  • West Virginia (17%, 11 Votes)
  • Kansas (14%, 9 Votes)
  • Texas (8%, 5 Votes)
  • Hawaii (6%, 4 Votes)
  • New Hampshire (5%, 3 Votes)

Thanks and 72,

Kelly K4UPG


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  • Matt W1MST, Managing Editor