Archive for the ‘antennas’ Category

Duh: Learning Curve #5 Old Lessons Remembered

POLL RESULTS SO FAR:  West Virginia is in the lead for best Ham Radio QTH in the USA… One more week of voting… Have you voted yet? Here’s the link to vote!

Last weekend I played in the QRP Afield event and had fun with fellow Polar Bear QRP Club members on the air. It was a great time. Once again, the antenna tweak won out and under the influence of a great blog post by Polar Bear #20 VA3SIE, Martin in Ontario about the 88ft Doublet, I caved in and put one together the night before the event. Oops, I did it again! But this time I had excellent results and the antenna worked as advertised.  LESSON: Sometimes it pays to follow your heart and not your head.

cd logo

Civil Defense Logo

I also remembered how I learned a lot as a young teen aged ham via the Civil Defense program. Remember that time?

Watching a weather report about tornadoes reminded me of a great learning experience. The Palm Sunday Tornadoes of 1965 hit the counties north and east of my home in Elwood, IN. At only 15 yrs old, I was the assistant emergency coordinator and ran the 6 meter emergency communications net on Sundays.  Our county and city Civil Defense teams had setup equipment and were ready for disasters and those tornadoes reeked havoc on our area.

Palm Sunday Tornado Map

Path of the Palm Sunday Tornadoes

Our teams rolled out the emergency vans, and the adults helped this young ham handle traffic for the state police and other government emergency responders.  The old yellow CD Gonset Goonie Bird rig is still something I remember fondly. I loved running that thing!

LESSON: Give the young hams some responsibility and empower them. They will be there when the time comes and will never forget how older folks treated them as peers and gave them an opportunity to do something important. I bet that kind of opportunity will still attract young people to our great hobby. We need them! They need us!

Goonie

The Yellow Goonie Bird

Lesson from a Heron: Search and Pounce

As a bypass survivor, each morning when possible, I go for a brisk walk. We are blessed to live in a nice development in Orlando which has a bit of lakefront and also has some irrigation and flood prevention ponds. This water attracts a good selection of wildlife which makes it fun to be outside and exercising even though the heat and humidity are often both above the 90 mark.

We have ducks, baby ducks, coots, turtles, snakes, eagles, hawks, osprey, sand hill cranes, storks, cormorant, anhinga,  raccoon, possum, squirrels, armadillos, feral cats, foxes, geckos, lizards, frogs, toads and all sorts of other neat critters to entertain us at various times of the year.   This morning I spent some time watching the water birds fishing on all the new fingerlings from this year’s hatch of bass, bream and tillapia that gather in the grass along the water’s edge.

Heron Fishing Style

Learning S & P from a Heron

Today a heron demonstrated how to do catch fish and I realized that the heron could teach me some things about operating QRP style search and pounce.

The heron has a particular style… they spread their wings like this great photo demonstrates so well (thanks Chris Harshaw and http://www.wikimedia.org). So what’s that got to do with ham radio? Like a karate master who learns from the world around him, a good QRP op can learn from the birds! The heron shades the target with its wings to take the glare off the water so it can see better. It also causes the fish to become confused and they can pick off the loner or easiest target.

Same thing with QRP… we need to spread our wings by tuning around a bit more agressively and listening for the ones we can snag. Not always the strongest, but a signal that is decent and an op that genuinely wants to make a contact. When we find that contact we need to pounce on it and not waste time.

Yes, I learned a bit from watching that heron this morning. He caught quite a few fish in a short time using his form of search and pounce. That heron was quick and moved from spot to spot gingerly and didn’t miss his target very often. No wonder he’s grown so large! I want to be more like that heron when I am on the air.

Still time to cast your vote in the poll for the best ham radio location in the USA.

72,

Kelly K4UPG PB #173

Duh: Learning Curve #4 Oops I did it again!

Ever see one of those tie bars or pins that say, “IYKDWYBDYKGWYBG”  My dad had one back in the days when men wore ties. The thing used to bug me cause he didn’t tell us what it meant right away. We tried guessing for a few days before he got tired of 7 kids all ganging up on him.

It is the famous If You Keep Doing What You’ve Been Doing, You’ll Keep Getting What You’ve Been Getting!” Not sure who gets the credit for that one, but it sure stuck with me all these years. Of course, I’ve heard my bosses recite it a few times along the way too.

Hole in the Head?

It only hurts when I laugh, or think, or move, or…use a new antenna in a contest!

That’s what this series of posts is about. Not repeating mistakes I’ve made. Maybe you can learn from my mistakes and save a bit of time. Or maybe you’ll just get a laugh and some relief from knowing someone else made the same mistake you’ve made. HA!

Well, last night, I did not follow my own advice. I put together a new antenna a few hours before the NAQCC Sprint and set it up. LESSON: As previously mentioned, don’t try to use a brand new antenna in a contest.

Ooops I did it again. Strike TWO! It was a disappointing night and too late to try to get another antenna up before the 2 hour sprint was over. So no contacts for me, I’m still scratching  my head. Was it the antenna, me, or the band conditions? BUT… I don’t think I’ll pull that one again. Unless I have a hole in my head…

72,

Kelly K4UPG

p.s. Don’t forget to take the poll on my blog for the best ham radio QTH in the USA! It is on the left side column.

We all should know the benefits of salt water and antennas…. but salt water AS the antenna……

OK, I just had to post this.

I’ve experimented with saltwater when operating portable (one of the benefits of living about a half hour from the shore).  I know friends that have made antennas using salt water, and they had great luck.

This guy, took the idea and spun it on it’s head.  Check out the induction as well – SWEET!

I am a CPG

Spent my birthday participating (casually) in the Straight Key Century Club Weekend Sprint. My Lake Fredrica neighborhood site was where I set up my shelter and 3 antennas. I had a 40m dipole fed with twinlead up 40 ft and running E-W. An End Fed Halfwave for 20m was nearly vertical suspended by a nearby tree. A twinlead 44 ft doublet on my 20 ft Jackite with the ends at 16 feet was setup running N-S to give me a bit of a mini-smorgasbord of antenna choices. Since it was really sunny, I hooked up my ACME GC100 Solar Charger and VW Solar Panel.

Bands were decent with 40m quiet and some DX coming through early from Eu stations. Nice to hear that again. 20m came alive and was pretty much the go to band for the majority of the day. I did check 15m a couple times but did not hear much and no one replied to my CQ’s.

In the middle of a QSO, my Jackite pole decided to collapse but I was able to finish the QSO with one end of the dipole about 4 feet above the ground. hi hi

The highlight of the day was my last QSO with EA3NO, Lluis in Spain. As the special station for the sprint there was a lot of competition but Lluis hung in there with my weak signal and pulled me out of the crowd after a couple attempts. THANK YOU FOR THE BIRTHDAY PRESENT Lluis!

Still wondering what a CPG is? Contest Point Giver! I am a really casual contester. Really the only reason I participate is that contests offer a fairly good opportunity to make some QSO’s. When you are QRP you have to do a lot of listening, plus pounce and search, but serious contesters will dig out weak signals to make the QSO’s so it is fun. I enjoy giving out points and reading the mail on ops that are faster than my cw comfort zone. Good practice, eh?

Here’s some photos from the day. Enjoy!

72,

Kelly K4UPG PB #173 SKCC #5415

Duh: Learning Curve #3–Coke Choke Works!

Had a great time setting up the C Pole antenna in a tree suspended configuration. My good friend and cohort, Jim Diggs, K4AHO came by with his AIM 4170 Antenna Analyzer and we were ready to tune the antenna and get a feel for it.

LESSON: A good analyzer makes tuning an antenna fast, simple  and accurate! The AIM 4170 gave us a TON of info (most of it going over my head) and let us see how the C Pole was doing in several areas.  Take a look at this output! (Click on the image for a larger version)

C Pole Plot

K4UPG C Pole Scan Results

LESSON: I followed Niel’s directions, but did not have a small plastic coffee container so used a Quart Coke bottle instead. So I call it a Coke Choke and it seems to work well. Here’s a photo to show it off!

Coke Choke

Coke Choke Ready for Duty

I think this one is a keeper. Goes up easily, hears well and loads nicely too. I made a few brief contacts and called it a day, but look forward to more C Pole action in the days ahead.

72,

Kelly K4UPG PB #173

p.s. Don’t forget to vote in the Ideal Ham Radio QTH poll on the blog!

Sivan’s Wonder Loop

It’s always good to hear when something one does or writes inspires somebody else to try it and they are pleased with the outcome. Sivan, 4X6IZ, made a version of my portable Wonder Loop and found that “it works as advertised.” He has put some information and pictures of it and another loop he made on a website. His idea of using polyethylene coated aluminium pipe to make a fixed frequency loop and tuning capacitor is particularly interesting if you always operate close to a particular frequency such as for QRP CW, PSK31 etc. If I had space in my attic for another magnetic loop I could dedicate for HF APRS use I would definitely make one of these.

I’m sure you’ll find it worth reading about Sivan’s magnetic loop antennas.


Subscribe FREE to AmateurRadio.com's
Amateur Radio Newsletter

 
We never share your e-mail address.


Do you like to write?
Interesting project to share?
Helpful tips and ideas for other hams?

Submit an article and we will review it for publication on AmateurRadio.com!

Have a ham radio product or service?
Consider advertising on our site.

Are you a reporter covering ham radio?
Find ham radio experts for your story.

How to Set Up a Ham Radio Blog
Get started in less than 15 minutes!


  • Matt W1MST, Managing Editor