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One of my favorite QRP groups is the 4 States QRP Group that sponsors Ozarkcon. Today we had an interesting thread going on their email list concerning slingshot antenna launcher and visibility of the line and sinker.

I’ve been working on that issue for a bit and offered my current solution. Still not 100% perfected, but it is working well now. Here in Florida, the tallest trees are mostly pines and the bark is pretty sticky with sap and lots of crooks and crannies that don’t allow monofilament fishing line to slide as freely as I’d like. I’ve tried the archery reel and slick braided line and although it does slide nicely through the trees, it is much slower and challenging to reel in and also is very prone to tangles and wind knotting which wastes time to untangle. In low wind or super sticky pine trees it is still the best solution.

Below are some photos of my cheapo solution to the slingshot line launcher. A $4 slingshot from Harbor Freight and a 99 cent shelf bracket from Lowe’s are the basic components. One challenge is being able to see where the sinker and line end up after the shot. I tried painting the sinkers, but in tall grass or lots of leafy trees, it did not show up as easily as I would like. The simple solution I found was to use fluorescent plastic surveyor’s tape (also from Lowe’s) to add both vivid color and some motion to help me locate the sinker whether in the trees, air or ground. I’ve also recently switched to red colored monofilament line called Cajun Red Lightning that offers a bit more visibility than clear monofilament.

Here are the basic elements… slingshot, Shelf bracket, spincast reel

If you are looking for an inexpensive simple solution, this might be the answer! Give it a try and let us know how it works for you. Leave a comment or better yet, join the 4 States QRP Group and join the conversation.

Closeup of the mounting of the reel

The assembled launcher — slingshot taped to bracket

Welcome to Handiham World!

A volunteer summer

Eliot, KE0N, gets the remote base project underway

Eliot, KE0N, at the new remote base control point.

The Handiham Remote Base at Courage North has proven to be reasonably reliable and quite popular with the Handiham membership. Just in case you need a refresher, our Camp Courage North location is in far northern Minnesota near the headwaters of the Mississippi River. The station is at the location where we held many Handiham Radio Camp sessions over the past two decades. It consists of a Kenwood TS-480SAT, a rig control interface and computer, an LDG auto tuner, and a G5RV antenna. The station runs W4MQ software to control the radio and SKYPE to port the audio both to and from the remote control operator. Users sign in with their approved credentials and are able to control the radio, changing the frequency and other parameters, and use the radio for both transmit and receive functions. The idea is to provide a real radio for many of our members who cannot otherwise get on the air because of antenna restrictions or other impediments to installing an HF station. Some of our members who do have their own stations also appreciate being able to operate from a completely different location. In addition to the W4MQ software interface, up to five users without transmit privileges can listen to the radio by connecting to W0EQO-L on Echolink. If no transmit control operator is present, Echolink users may control the radio’s receive frequency using the text box feature of Echolink, simply by sending a frequency in the text and pressing enter. This feature is useful for a quick check of propagation conditions here in the Midwest. For example, a user might enter the number 10 to hear what The National Bureau of Standards station WWV sounds like here in Minnesota.

Since only one transmit control operator can run the station at a time, there is a need for a second remote base. That is why we are pleased to have the able assistance of Eliot, KE0N, and Lyle, K0LR, who are working together to help me with this second Handiham remote base. Our new callsign will be the traditional Handiham headquarters call of W0ZSW. We hope to have the station in operation by the end of July, and when Eliot visited Handiham headquarters yesterday to work on the project, he made a lot of progress. In case you were wondering, the radio we have chosen is a Kenwood TS-570S. This radio, which has the capability of operating 160 through 6 m, will be coupled through an MFJ autotuner to a W0OXB 300 foot “special” wire antenna at an average height of 45 feet. This arrangement will allow us to offer 160 m through 6 m capability from the new remote base location. The existing remote base station at Courage North operates only 80-10 m using a 102 foot wire antenna, so we think that this will be a significant addition to our member services. The rig control computer is a Windows machine configured and supplied by KE0N, and the interface is a RIGblaster Pro. The radio is equipped with the VS3 speech module for blind users.

Lyle, K0LR, engineer for the Courage North station, is helping us with the station configuration. Our goal is to copy all of the user credentials from the first remote base to the new remote base so that users will have easy access to either station. This will also help us with tech support issues, and as you might guess we hope to keep those at a minimum!

One advantage of having two remote base stations separated by a significant distance is that there will be more choice for operating when conditions are bad in one spot but not in another. In the event that one station goes down, the other one would still be available. Redundancy is a good thing if you want to keep a service like this up and running.

No project worth its salt ever gets through the installation process without a few glitches and a visit from our associate engineer “Murphy”. Sure enough, Murphy’s presence was felt when the necessary DB9 serial cable turned out to be missing in action. We still have some issues to figure out with port forwarding and a static IP address, for those of you who understand what that stuff means. Nonetheless, we are pleased with the progress to date and feel that we are on target to have this member service available very soon.

For Handiham World, I’m…

Patrick Tice
[email protected]

Handiham Headquarters spruced up

The Handiham headquarters entrance in the Camp Courage Reception Center.

You have seen photos of our headquarters before, but things are looking pretty good now at the Cyril Rotter Technology Center. Antennas rise to the left of the round building, and the 300 foot wire antenna is invisible high up in the trees to the left. The double doors can open wide to accommodate electric scooters or wheelchair users.

QSL cards

Since it is strictly “slow news” for ham radio this time of year, how about telling us about some favorite QSL cards you have either sent or received over the years? A photo or scan would be helpful, if you have one.

This photo shows a Handiham 25th anniversary sticker that we produced in 1992. The idea was to stick these onto your existing QSL cards and send them out to help promote the Courage Handiham System. They are pretty rare, so if you have a card with one of these Silver Jubilee stickers, hang onto it!

So what do you have? Send it to [email protected] with your comments.

Feedback

Howard, KE7KNN, writes:

Hello, Pat.

Could you please remind our readers and listeners that we need people to take part in the Handiham nets, both the daily net and the Wednesday evening net. Summer is a particularly slow time and we need more participants. Remember that these nets are open to everyone and that you do not need to be a Handiham member. So bring a friend and join us — you may even find the Handiham net a place to make new friends!

73,
Howard, KE7KNN, Handiham Net Manager

Ed Piskor's QSL card for N2H

The station has a great QSL card (above) which was drawn by Ed Piskor of Wizzywig Comics.  Ed shows on his blog how he created the QSL card. I will have to try and catch N2H on the air to get one of those cards.

Great to see amateur radio involved in the hacker scene.

For above image note: Ed Piskor / CC BY-NC-ND 3.0

Had a good day in the park with Jim K4AHO and Wally KG4LAL. Spent a good bit of time testing a couple tuners for End Fed Half Wave antennas using Jim’s AIM 4170. Wow is that thing a great tool for tweaking antennas! Info overload!

I built an antenna tuner based on AA5TB’s design for an end fed half wave antenna. I am using a 3 ft or so counterpoise on the ground as Steve suggests. On the analyzer in a test lashup it was a bit touchy to hand capacitance but tuned well even up to 21Mhz. Since I am not thinking of backpack size I used a pretty good sized enclosure for it. I am using an air variable 6-160pf cap instead of a polyvaricon like Steve used since space is not a big issue. I also used a T68-6 toroid instead of the T50-2 Steve used.

When I mounted it in a plastic box the sensitivity seemed to increase. I have not put a LED SWR bridge in the box yet, as I was waiting to see how it worked before adding more variables. Today I was able to put an AIM 4170 analyzer on it and it did tune the antenna… seems that the air variable I used is perhaps a tad small. It is almost fully meshed on 40m cw and on 20m it acts like even at minimum capacitance the sweet spot is very narrow and hard to tune.

Here's the innards

My question(s) are:
1) Is the hand/body capacitance normal? If not, what might cause it to
be so touchy?
2) Would my parts layout be part of the issue?
3) Does the DPDT switch (mini toggle) I added for later use with the SWR
bridge add significant capacitance to the circuit? I was able to match a
21Mhz load on the raw test setup, but not once it is in the box.
4) I have a small bus wire for a ground, do I need to increase that?
5) Is the plastic box the problem? Would it be better in a metal enclosure?
6) Am I asking too many questions? Sorry, this is how I learn. Build,
test, ask…

SWR bridge I want to use

Thanks for your wisdom and experience on this one.

72,
Kelly K4UPG

Welcome to Handiham World!

A volunteer summer

Will Tice, KC0LJL, does some soldering.

Handiham volunteer Will Tice, KC0LJL, helped out at Camp Courage by soldering some PL-259’s to random wire receiving antennas. Will learned to solder when he took an electronics class in high school. Now that he is heading into his senior year at university, he helps us with other jobs as well, including computer-related stuff.

“Look at these nice, shiny solder joints”, he says.

And speaking of volunteers, Bob Garwood, W0BV, has a first draft of the Summer Handiham World print edition ready. Bob is an experienced newsletter editor, and knows how to cut my sometimes too-long articles down to size. Look for the print edition (with a giving envelope) to show up later this summer.

Handiham volunteers Lyle Koehler, K0LR, and Eliot Ricciardelli, KE0N, will be working with me on the W0ZSW Remote Base HF station. We expected to work on the project soon after radio camp, and several important pieces of the project are now in place. We have completed our office move and have configured the office and ham shack space at Camp Courage. We have drilled holes through the concrete walls for feedlines, and our antenna team of Dave Glas, W0OXB, and John Harvard, KC0UHY, have installed an excellent 300 foot center-fed dipole fed with 450 Ohm open wire line and a current balun. The parts were donated by the Stillwater Amateur Radio Association, and a tuner was donated by Eliot, KE0N.

We are so grateful for the time and talent that all of our volunteers share with us. Thank you!

For Handiham World, I’m…

Patrick Tice
[email protected]

Welcome to Handiham World!

A volunteer summer

Will Tice, KC0LJL, does some soldering.

Handiham volunteer Will Tice, KC0LJL, helped out at Camp Courage by soldering some PL-259’s to random wire receiving antennas. Will learned to solder when he took an electronics class in high school. Now that he is heading into his senior year at university, he helps us with other jobs as well, including computer-related stuff.

“Look at these nice, shiny solder joints”, he says.

And speaking of volunteers, Bob Garwood, W0BV, has a first draft of the Summer Handiham World print edition ready. Bob is an experienced newsletter editor, and knows how to cut my sometimes too-long articles down to size. Look for the print edition (with a giving envelope) to show up later this summer.

Handiham volunteers Lyle Koehler, K0LR, and Eliot Ricciardelli, KE0N, will be working with me on the W0ZSW Remote Base HF station. We expected to work on the project soon after radio camp, and several important pieces of the project are now in place. We have completed our office move and have configured the office and ham shack space at Camp Courage. We have drilled holes through the concrete walls for feedlines, and our antenna team of Dave Glas, W0OXB, and John Harvard, KC0UHY, have installed an excellent 300 foot center-fed dipole fed with 450 Ohm open wire line and a current balun. The parts were donated by the Stillwater Amateur Radio Association, and a tuner was donated by Eliot, KE0N.

We are so grateful for the time and talent that all of our volunteers share with us. Thank you!

For Handiham World, I’m…

Patrick Tice
[email protected]

As one of the many antenna restricted condo owners of America, I cannot operate as often as I’d like. The hassle of putting up and taking down temporary antennas wastes time, isn’t always practical and generally spoils the fun for us.

Great that we have some holidays and time off as it allows a bit more opportunity to get on the air. The MI QRP group hosted a 4th of July Sprint and although the hour was late (7-11PM EDT) since I did not have to go to work Monday, I took advantage of the chance to work a few of my fellow QRP ops.

Rain and lightning welcomed my efforts to set up an antenna. So I forsook my normal setup and settled for a twinlead 44 foot doublet hung from my 20 foot Jackite pole which was bungee cord strapped to a ladder in the back yard of our condo. The antenna ran north south so much less than ideal, but at least I could get on the air.

Freshly Built NEScaf saved my bacon!

The day was saved by my freshly built NEScaf filter. As one of the lucky ones, I recently received the latest edition of this great kit provided by the NE QRP bunch. It enabled me to listen to cw despite the high QRN and background hash from neighbor’s TV’s, computers and air conditioners. What a joy it is to actually hear stations through the noise. This is a must have accessory for the condo based QRP op! I am still learning to use it well, but am mega-impressed with the capabilities it offers. With this audio filter, I could null out the QRN and peak the CW signals making for much more relaxed and enjoyable copy. The extra audio boost helps my little Sierra audio too. Keep watching for the next round of kits!