Archive for the ‘antennas’ Category

Hontoon Island Qualification Report

Great weather, great site, and despite so-so band conditions but we made over 25 contacts to be able to submit our qualification of Hontoon Island, Deland, Florida as an official island to be listed and activated as a US Island On the Air.

The main picnic site

The main picnic area near the ferry landing

The team consisted of Wally Crew, KG4LAL, Jim Diggs, K4AHO and Kelly, K4UPG. We used the special event callsign K4T on operated on 20m cw and ssb, 30m cw and a few unsuccessful attempts at 40m & 15m cw. Jim was our secret weapon on 20m with his good cw, K-1 and a Par End Fed antenna in vertical configuration on a 33 ft MFJ telescoping mast. Without his contribution we would not have been successful! So a big thank you Jim for your good operating skills and equipment that made it happen in less than 8 hours at QRP levels.

FL481 is ready for future activations!

Thanks to the Polar Bear QRP group, QRP-L members, 4 States QRP Group, GORC QRP Spots, US Islands organization and HF Packers that helped out by listening and attempting to connect with our effort on Hontoon Island. It was fun to work as a team!

The NA-034 operation that almost wasn’t, Part IV

If you haven’t read Part I , Part II and Part III first, you might want to do that.

As I mentioned previously, once I got the power problem figured out I was able to easily make contacts with other stations, which is what I’d planned to do in the first place. In the first half-hour of operating, I made contact with about 25 stations. Compared to rare DX stations this is very slow, but my operation was very low-key and I’d often spend a bit of time to briefly chat with the other operators, so this was far from the typical “K2DBK you are 59 thanks QR Zed” that you hear in those operations. I was having a great time working stations, and after a while I started to hear folks in Europe calling me, but they were covered up by the US callers. I figured that I’d try to work as many folks outside North America as I could, so I asked for only stations outside of North America, and worked 9 stations in as many minutes, all outside the US. I worked folks in Italy, Poland, Spain, and Belarus all in fairly quick succession. Thanks very much to the folks in North America who very politely stood by while I worked the other stations. Not one single person from North America called when I was asking for the other folks. (By way of explanation, it is an unfortunate fact of life that all-too-often hams will “call out of turn” and ignore requests from contacts from specific areas. When they do that, it just slows down the process.)


After I had contacted the folks outside North America, I went back to working any station that was calling me, and I picked up a mix of both US stations and some more DX from Italy, Serbia, and Belgium. I had a couple of other chats during a few lulls with Larry, KH6ITY, and finally shut down for the day at around 4:45PM local time to head back to have dinner with the Sharon in St. Armands.

The Legendary Salty Dog

The following day I got somewhat of a later start than expected, but I did want to stop at The Old Salty Dog again, this time to have what is one of the most delicious and presumably most unhealthy foods in existence: Their signature “Salty Dog”. A Salty Dog is a jumbo hot dog dipped in beer batter and deep fried. It is indescribably delicious. Of course, it must be washed down with a nice cold bevarage (a Bass Ale for me, thanks). 


When I arrived at the park, the parking spot I’d had the first day was taken, and I was having trouble finding a place to park where I could be close enough to be able to set up on a picnic table, but as I was walking around (I’d parked temporarily “out of range”) someone left and I was able to pull in close to a different table, this time right out in the sun. The only downside to this location was there there wasn’t another table nearby so that I could set up the antenna on a different table, but I was able to set up the antenna on one end of the table and operate from the other without any issues.  Well, not at first.

Buddistick set up for 20m with counterpoise thrown
over a tree branch

I started off working stations on 20 meters and worked a number of US and Canadian stations, as well as a station from Slovakia and one from Hungary. I’d been trying to set up a contact with Scott, NE1RD, who was now operating from the island of St. Thomas (as KP2/NE1RD) on and off for a while by this point. I emailed Scott from my BlackBerry that I was currently on 14.260Mhz and Scott quickly threw together an antenna for 20m, but by the time he got on the air, I’d lost the frequency that I was using and we didn’t make the contact. “Losing” the frequency means that I was using it to make contacts, but due to the way that propagation works, sometimes two (or more) stations will be using the same frequency, both unable to hear each other until the conditions change, then usually one of the stations will wind up “taking over” the frequency. This is what happened in my case, and I “lost”.


As it turned out, Scott had already built a 2 element beam for 15 meters using the Buddipole gear that he’d brought, which would provide a much better signal to me. I reconfigured my antenna for 15m (very easy to do), and coordinating once again via email we were able to contact each other. Neither Scott nor I consider ourselves as “rag-chewers”, which are folks who prefer to get on the radio and have a nice long chat with someone. I’ve certainly done that in the past, but most of my current interest is in working DX stations and contesting, both of which  require very brief, specific exchanges of information. However, Scott and I found that we had a lot to talk about, so the contact was not a brief one. About 10 or 15 minutes into our conversation, I got another visit from Mr. Murphy.


As we were talking on the radio, I thought that I noticed the odd sound in my headset that I’d heard previously. This didn’t make any sense, since the car was still running (as you’ll recall, the battery alone was unable to provide sufficient power to transmit at full power). Scott then commented that he could hear my signal starting to distort, so it sounded like the problem was returning. We both tried to figure out what might be going wrong, and while trying to figure out what could have “broken” while operating (nothing had been touched since I originally got on the air that day), I thought that perhaps our relatively long chat had caused the power cables to heat, which in turn would increase the resistance in the cables, reducing the power available to the radio. I felt along the length of the cable but didn’t feel any warm spots. I was about to rule out the wire heating up when I realized that I’d closed the hood on the car almost all the way and when I opened it, obviously (in hindsight) the portion of the power cable that was closest to the battery, and under the hood, was quite warm. It hadn’t heated up solely from transmitting, but also because it was a warm day and with the engine running and the hood closed, the engine compartment was quite hot. The solution to the problem was now quite simple: Leave the hood of the car open.


After just a minute or two, the power cables cooled enough to allow enough power to flow so that my radio was again transmitting normally. Scott and I finished our chat, and I decided to stay on 15m where I worked stations from Puerto Rico, Italy, Portugal, and the US, finally finishing up with a nice chat with Andy, AE6Y who was operating from Aruba as P49Y, having just arrived there prior to the WPX Contest that was coming up. When I finished with Andy, it was time to shut the station down to head back for a final family dinner, since we were leaving for home the next day.


In all, despite losing a day of operating due to the power problem, I would rate this as a successful operation for a number of reasons. First, I did finally get on the air and made contact with 16 different DXCC entities (countries) and at least 10 different states. (It was almost certainly more than that, but I didn’t always get the name of the state for the station that I was talking to.) Second, I was able to give back a bit to the hobby by talking to, and with Larry, KH6ITY’s class. If even one of his students goes on to get his ham license that would really be a wonderful extra benefit. Third, I’ve made a number of new friends both as the result of both my operation on the air and the attempts to troubleshoot with the wonderful folks from the Buddipole Users Group. Fourth, I’ve learned a bit more than I already knew about troubleshooting this type of problem. Finally, and perhaps most important, despite the issues that I ran into, I had a really good time doing this.


I have really enjoyed writing this series, and I want to thank those of you who’ve commented about how you’ve enjoyed it as well. There is a bit more information that I want to share that I’m going to write as an epilogue to this series, please look for that soon.


Until then,
73,
David, K2DBK

Update: I’ve posted the epilogue.


Polar Bear on Hontoon Island

Look out Hontoon Island the Polar Bear of Florida is coming your way! Good Friday, 2 April 2010 Polar Bear QRP member #173 (aka K4UPG) will attempt to qualify Hontoon Island as a US Island on the Air by making 25 contacts including at least 2 DXCC entities.

Main pic

Hontoon Island is a beautiful place for some QRP Portable Ops

Activity will start about 1400Z after the ferry ride over to the island. Plan is to use special callsign K4T for recognition.

Look for us on 30m cw (10.106-10.116 MHz) and 20m cw 14.050-14.070 MHz and on the hour we will check 15m 21.060-21.070. If anyone shows up to assist, will also attempt ssb on 14.250-14.260 MHz island corridor. All ops will be QRP so we’ll need your help to pull us out!

***************************************************************************************

Hontoon Fishing spot

Fishing is good!

If things go well, our Central Florida QRP group may consider this as a new operating site! If you are in the area, come on and check it out with us.

Closing Time is Dusk

Hontoon Island closes when the sun goes down!

Thanks to Florida State Parks for the fine pictures!

P.S. We did it 4.2.2010!  Over 30 QSO’s update coming! I am TIRED!

Polar Bear Midnight Madness Event Mar 2010

A fitting end to this season of PBMME … Saturday the weather was finally decent here in Orlando and with 80F temperature and lots of sun, I certainly earned my red neck for the season! I set up my portable station near the tall pine trees in our neighborhood park on Lake Fredrica. A few curious neighbors came by to find out what the crazy guy with the wires in the tree was doing!

I am really liking the latest antenna launching combo shown in the photo below. I have been using a slingshot taped to a shelf bracket and equipped with a spincast reel, but have been considering other alternatives. The monofilament fishing line is prone to wind knots and tangles and does not always slip through the branches as well as I’d like. I found an old post by Russ Carpenter, AA7QU, a co-founder of Adventure Radio Society, which described using an archery reel and super slick braided line. Sure is nice to learn from those that have gone before! The bright yellow line is very easy to see though very thin, 3x stronger than monofilament and flies through both air and branches with ease! KEEPER!  Think I will do away with the spincast reel and save it for the grandkids!

Tools of the trade

Antenna Launching options

Mar 2010 PBMME site

Here's my site for the event

another view

Great trees for antenna wire hanging!

If you look closely, you can see the 30m half wave going up to the tree on the left. Nearly vertical for 46 feet and is spooled on a Coleman Camping clothes line and used with a 3 ft counterpoise.

To the right is my 20ft Jackite pole and a W3EDP 84 ft antenna with a 17 ft parallel feed with 3/16 inch PET pipe spacers about every 2.5 ft. it tunes 80-15m with my BLT+ tuner.

The Polar Bear QRP Group is a great bunch of guys… (no yl’s or xyl’s that I’ve heard yet) and our monthly outings are something I look forward to each month. The Yahoo Group is a good source of information and laughs as we swap stories and share our adventures. If you like QRP and portable operation, this is the group to join.

MEN OF ADVENTURE by Dan Caesar NI9Y PB #218

These last two Polar Bear adventure radio sprints in January and February was quite an experience operating QRP (5 watts or less) outside in the snow. I never thought I would never do anything like this in freezing weather. There I was knee deep in snow; with a wind chill around 15 degrees, under an open air shelter at Cobus Creek Park, located in the northwest corner of Elkhart County in January. I was invited by Bob, KB9IVA, who said it would be fun. So I got my portable gear and winter parka and headed out to the site. When I arrived Bob wasn’t there. I got out of the warm car and looked over the snow covered picnic table. The bright sun reflected off the stone on the side of the building helped warm things up a bit.

initial setup

First one gets the warmest spot!

Then the sun disappeared and it became colder.  The heated outhouse was open so I warmed up for a few minutes.

QRP in the parking lot!

QRP in the parking lot!

It was too cold for me to set up outside so I operated in my mobile on 40 meters.  Bob arrived in a snowmobile outfit with a bag full of tools, and his ICOM-703 and MP-1 portable all band vertical antenna.

The antenna would not tune properly so I ran 25 feet of RG-59U coax from my mobile antenna to the picnic table.  Then the portable battery pack ran out of juice.  So I took my emergency car starter battery and hay wired a connection to the ICOM-703 and we were back on the air.  When it’s cold radios and batteries don’t work properly.  Wires become stiff, batteries quickly discharge, and the straight key was difficult to use.  Not to mention your exposed fingers feel frostbitten.  I had forgotten my gloves but you couldn’t send CW with them on anyway.

antenna vertical

Our vertical in the park!

Cold stiff hands on a very cold key! YIKES!

Cold stiff hands on a very cold key! YIKES!

I was more prepared for the February sprint but didn’t count on blowing snow.  Participating in this sprint was, Bob, WA9S Keith, and Steve KB9ZVJ and I Ni9Y.  Keith arrived late and operated inside his Jeep.  I Made a half-dozen contacts from Utah to Colorado to the East coast with my HB1-A 4 watt transceiver using a 50’ end-fed wire only 27 inches high.  Then the wires snapped off my battery pack.  So we quickly repaired the pack with a new connector and we were back in business again.

Snowy Location for the PBMME

2 Cold QRP Guys operate in the Feb 2010 PBMME

Bob had his IC-703.  His headphone band cracked in two in the cold.  Bob’s straight key was almost brittle and hard to use with gloves on.  Steve operated SSB with his Yaesu rig, powered by a riding mower battery, feeding a sloping 20 meter dipole about 5 feet high.

A snow proof antenna for 20m

A snow proof antenna for 20m

Last man sending!

Last man sending!

It was getting too cold for me so I packed up and left as the snow began to really come down. Steve saw me packing so he packed up and so did Bob.  Keith stayed behind moving to the picnic table and made more contacts in a small blizzard.  Then Park Ranger paid a surprise visit to find out what in the world was going on.  The ranger was satisfied that we weren’t suspicious characters after Keith explained the situation.  The ranger failed to notice Keith had wrapped his antenna rope around the door handle on women’s entrance to the outhouse. There was no way anyone could open that door.   The ranger probably thought we were a bunch of nuts playing radio in the snow.  It was fun and we probably will do it again next season.  Only next time I will be more prepared for polar bear weather.  Oh yes I forgot to say this was the POLAR BEAR MOONLIGHT MADNESS event.  You can read all about on their website http://www.n3epa.org/Pages/PolarBear.htm.  Polar Bears all over the country and in Europe participated in the madness.  The final polar bear event was held March 20th but I took a pass on that one because all the snow is gone so it wouldn’t be as much fun operating in warm spring weather!!!

The MEN OF ADVENTURE will soon take off again.  Barry, WD4MSM says “QRP To The Field” has just been announced for 2010.   He recalled that we took part in the 2009 version that had as its theme “The Great Depression.”  We operated from the WPA site of Monkey Island in Mishawaka (the bridge to Monkey Island was built by the WPA).

This looks as if it might be an ideal outing for us.  Saturday, April 24, 2010
Spicer Lake Nature Preserve http://www.sjcparks.org/spicer.html
Small picnic shelter available; Trees for antenna support if needed;
Restrooms (heated and immaculate) just steps away; Ample parking for hundreds!
Just minutes from South Bend; Plenty to do for family members and visitors (trails, grills, visitor center, two lakes, etc.); Handicap accessible trails and parking immediately next to the suggested operating position.

You to can join the MEN OF ADVENTURE even if you don’t have a QRP rig.  Just show up to learn about portable operation and how to put up antennas where they don’t belong.  Who knows maybe you to will be just as nuts as the other members of the group are?  Present company accepted.

That’s it for this edition.

73’s Dan, email DAN

p.s. Consider operating the special event KØS Strange Antenna Challenge Special Event — May 29-31, 2010.
Start Date & Time: Saturday, May 29, 2010, 1000Z
End Date & Time: Monday, May 31, 2010 at midnight (local time zones)
This is not a serious event.   We are all out here for fun!  K0S will employ out-of-the-ordinary antennas to promote Amateur Radio and making do with what might be available during an emergency.  Individuals and clubs may participate as “satellite stations” by using anything but wire or pipe for a radiating element and adding “/K0S” to their call signs. Details are on the KØS, Strange Antenna Challenge Web site. Strange antennas used in past events, dating back to 2002, have included folding chairs, paint easels, ladders, tape measures, dog kennels, fences, cots and chicken fencing with a trampoline as a ground plane. “More people share in the fun each year,” says Erik Weaver, N0EW, a Strange Antenna Challenge founder. “I hope you give me a call this year with your very own strange antenna. Now let’s play radio!”

Then the sun disappeared and it became colder.  The heated outhouse was open so I warmed up for a few minutes.

Across the pond mobile

With rain being forecast for the rest of the week I thought I would take the opportunity to make a few more mobile contacts. Before I did I decided to make a modification to the antenna that I hoped might improve the SWR of the MP-1 on the magnetic mount.

The Moonraker 7in. Turbo mag mount is not, in fact, a 7in. diameter magnet. It is more like a 5in. diameter magnet inside a steel case shaped like an upside down dinner plate with a 7in overall diameter. The magnet is not a tight fit inside the recess of the plate, so by drilling close to the flange I was able to make a hole without drilling into the magnet, to which I attached a terminal for one of those push-on electrical connectors. This could be used to attach a wire to ground the antenna to the car body. But as I hadn’t found a suitable grounding point I decided instead to make up a set of quarter wave counterpoises for 10m, 15m and 20m which I attached to a mating connector.

This time I thought I would drive to the coast to see whether being close to the sea would help me work across to North America. I parked beside the road half way between Maryport and Allonby, looking across the Solway estuary to the Scottish mountains in the distance. It was a sunny afternoon, the sky was blue and the sun glittered off the sea. A nice mobile QTH for a spot of operating.

I set up the MP-1 on the magnetic mount and checked the SWR on 20m using the antenna analyzer: it was about 2:1 as it was before. I then connected the counterpoise, expecting the SWR to come down to a 1:1 and was amazed to find it made absolutely no difference. It was as if there was no connection to the counterpoise at all – though I checked, and there was. Possibly the SWR curve changed slightly but the null stayed exactly the same, which was very disappointing.

I switched to 15m, tuned the MP-1 for best SWR and had a listen around. The first contact was with Nick, UY3LA from Lozovaya 150km south of Kharkov in Ukraine. My report from him was 55 to 59. He spoke good English and we had a chat for five minutes. I told Nick that my wife was in Kharkov at this very moment, and he invited us to visit him the next time we are both in Ukraine.

I heard some nice DX including FM5WD, A71CV, XE1HH, VU2JQ and CU2AA. I also heard several Stateside stations but could not get through to any of them. I switched to 17m for a while and made a couple of European contacts with good reports, which surprised me as there was a small hill about 80ft high immediately behind me in the direction of Europe. I’ll never understand HF propagation.

I also had an eyeball QSO with a local from Allonby who drove by and saw my antenna. He was a fellow radio enthusiast and wanted to say hello. It turned out the radio he was enthusiastic about was the 11m kind, but he was interested in getting a ham license so I told him to contact the Workington club for more information. He has a better antenna than me – a Sirio vertical up at 20 feet above all the TV antennas. I can just imagine what my neighbours would do if I tried that. That’s the trouble with living in a “posh” area.

Eventually I returned to 15m where I could still hear several US stations. I called K1JDL who said “I can hear a mobile in there but I just can’t pull you out” and then immediately QSY’d. Then I called Tom W0WP in Iowa who came right back with a report of 57 to 58. We had a really good chat for 15 minutes and Tom said that he “didn’t miss a word.” He was running 1200W to a TH6DXX so I said he must have a good receiver as my power was 20dB less than his. I thought he would say he was using a K3 but in fact he was using a TS-2000! However he is out in the country in a plot of several acres and the nearest neighbour is a quarter of a mile away so he doesn’t suffer from man-made QRN. I can only dream!

Mission accomplished: my first Stateside contact from the mobile and a good solid ragchew to boot. I decided to call it a day and go home for tea.

DIY helical antenna for 2m

A few weeks ago I made a rubber duck helical antenna for my TH-F7E. I didn’t get around to writing about it at the time, plus it took a while to get some reports of its performance.

Well, it works extremely well, and I have just added a description of how to make it to the main G4ILO’s Shack website. See A DIY Ducky for 2m.


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