Category Archives: Antennas

Accessories, Antennas, Articles, Field Radio Kits, Field Reports, Grab And Go, Guest Posts, News, Portable, POTA, QRP, SOTA, Travel

Flying High and Keying Low: A Pilot’s QRP Adventures Across the USA

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Many thanks to Micah (N4MJL) who shares the following guest post:

Elecraft KH1 Anytime and Anywhere Adventures

by Micah (N4MJL)

Anywhere and anytime—that’s how I like to describe my Elecraft KH1. This radio goes everywhere I go. As an airline pilot, I bounce from coast to coast and everywhere in between almost daily. Since I’m constantly on the move, my radio gear has to be small and compact.

I’m a third-generation ham radio CW operator. Anyone who’s heard me on the air knows I’m still quite new to CW. I only started running CW activations with POTA/SOTA in the spring of 2024. Here’s the gear that’s been working well for me, along with a few photos from the locations I’ve had the pleasure of activating.

I’ve found that the Pelican M50 micro case is the perfect “shack in a box” for my KH1. This setup goes everywhere with me. Here’s what fits perfectly in the M50:

  • Packtenna 9:1 random wire
  • 20 ft BNC coax
  • Panasonic ErgoFit earbuds
  • SP4 paddles from CW Morse
  • KH1 (fully loaded with internal battery and tuner)
  • 30 ft throw line
  • Write-in-the-Rain notebook
  • High Visibility Orange Cap-O-Matic Fisher Space Pen (with lanyard)
  • Desiccant silica gel pack

In pedestrian mobile configuration, the KH1 is a solid system. I’ve done several activations this way. That said, after 45 minutes of holding the KH1 in this setup, I’m ready to wrap up! Having a portable shack that lets me deploy a random wire that tunes 40-15m and a more ergonomically designed key drastically improves my capabilities.

In many urban environments where I activate POTA, pedestrian mobile is essential. Unfortunately, the security in urban parks can be unpredictable, and the KH1 allows me to operate on the go and quickly move if needed.

Some of you may be wondering what I did to the inside of my M50 case. Well, in my defense, it’s my wife’s fault. She left me unsupervised with a glue gun and a bit of alcohol. When my KH1 arrived this spring, solar conditions were poor, so I had a few days to think and decided to turn the case into a makeshift Faraday box. I used Polyken aluminum tape, cardboard, and a glue gun to line it. Now, I know what you’re thinking: there’s no electrical bonding between the lid and lower box due to the rubber seal, so will this really work as a Faraday cage? Maybe, maybe not—but it sure looks cool! What do you think?

In addition to the M50 case, I carry a support pouch (Magpul DAKA, size small). This heavy-duty, water-resistant pouch contains:

  • 31 ft counterpoise wire
  • AXE1 40m antenna extender
  • Bioenno battery 12V 3Ah (backup battery—“1 is none, and 2 is 1” if you know, you know!)
  • KH1 power cable
  • KH1 right-angle antenna mount

These items aren’t essential but are nice to have for longer activations.

When I’m done flying and ready to play radio, I pack all this gear into my Flash 22 day pack. This compact, minimalist pack takes up almost no room in my flight bag and even has a built-in whistle on the chest strap, which is perfect for California!

When conditions allow, I enjoy using the full five watts of power. My go-to antenna is the SOTAbeams Band Hopper III, which is a versatile half-wave linked dipole:

  • Rated 125 watts
  • Center-fed with 33 ft RG174 coax
  • Guying system included
  • Resonant on 20m, 30m, and 40m (no tuner needed, though the KH1 tuner will also tune up 17m and 15m)
  • Built-in balun
  • Weighs only 14 oz

The wire/guying winders are excellent, and I’ve used this system in all kinds of environments, from sandy beaches to mountain tops above the treeline. I replaced the aluminum tent pegs with plastic ones to keep TSA happier.

The SOTAbeams Tactical Mini Mast fits diagonally in my 22″ roller board. I wrap heavy rubber-coated wire around it to secure it to posts or shrubs when needed.

Along with this radio gear, I also manage to pack a change of clothes—usually enough for a five-day trip. I typically fly three trips a month, each lasting four to five days. My roller board carries me and my radio gear from plane to plane all week long.

On a short backpacking trip along the Appalachian Trail (June 3, 2024), I activated SOTA summit W4V/BR-007 Three Ridges and the Three Ridges Wilderness area (POTA US-9959). The mountain in the distance is The Priest (W4V/BR-002), which I activated earlier this year with my LNR Precision MTR4B.

The summit of Three Ridges is a densely wooded area, so I stopped below the summit to enjoy the view, grab a quick snack, and play some radio. I snagged two POTA-only QSOs with W8WZ in Louisiana and KU8T in Indiana using the KH1’s whip antenna. Once I reached the summit, I used the Packtenna 9:1 random wire for my activation. Continue reading Flying High and Keying Low: A Pilot’s QRP Adventures Across the USA →

Antennas, Articles, Field Reports, Guest Posts, POTA

64-Contacts Spanning 6-Bands, 8-Countries, 3-Continents Using A 17m Coaxial-Sleeve Vertical Dipole

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Gee, the title almost tells the whole story.  But not really.  The title is where I ended up; how I got there, is the story.

Here’s the story.

Today, I hope to activate Fintry Protected Area CA-3505 in southern British Columbia.

One of my objectives since I started POTA last year is to try to activate as many parks as I can in the Okanagan region of BC that have not yet been activated by anyone.  Nothing like a good challenge.  I expect that most of them haven’t been activated because they are quite remote and difficult to access unless one has a true off-road all-terrain vehicle.  Even at that, sometimes it still requires backpacking-in, to boot (no pun intended).  This is in part because many of the Protected Areas and Ecological Reserves are not always directly accessible by vehicle.  The roads often do not enter the park boundaries at all.  They get you close, and then you need to hoof-it in to be POTA legit inside the park boundaries.

Fintry Protected Area has never been activated before, by anyone. I’m wondering why?  Compared to many of my past activations, it isn’t nearly as difficult to access as some others I’ve been to.

The location in Fintry CA-3505 that I will be activating today is located about a 1-hour drive north of Kelowna, BC (where I live) via West Kelowna.  The last section of travel is via rough gravel roads.

Continue reading 64-Contacts Spanning 6-Bands, 8-Countries, 3-Continents Using A 17m Coaxial-Sleeve Vertical Dipole →

Antennas, Field Reports, POTA

Activating CA-4252 With A Novel Coaxial Sleeve Telescopic Vertical Dipole

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In recent times I’ve been feeling the urge to start experimenting with telescopic vertical whip antennas.  Vertical whip antennas appear to be somewhat simpler to setup than elevated dipoles.  So, it seems like a worthwhile endeavor to experiment with.

Recently, I purchased two Chameleons telescoping verticals whips:  their 17’ version and the 25’ version, for experimental purposes.  I’m looking forward to trying various configurations, which will likely not be until next spring or summer as our weather here in the Okanagan Valley of BC is starting to show hints that winter is just around the corner.  So, for now I have one specific configuration idea in mind that I have been itching to try:  a 1/2 λ Coaxial Sleeve Telescopic Vertical Dipole.  However, this configuration is required to be elevated with a tall mast.

In a sense, I suppose one could call this a Hybrid Telescopic Vertical Antenna because the top-half of the antenna will be a standard 17’ telescopic vertical whip from Chameleon.  And, instead of typical radials, the bottom-half of the antenna will be using the same concept of a Coaxial Sleeve Vertical Dipole, tuned for the 20m band.

I won’t take up too much space in this report outlining the construction details.  I just wanted to see if this antenna concept has any viable potential for ongoing uses.  This is the antenna I will be using today atop my 30’ carbon fiber telescopic mast.

Here we go with the events of the day.

Today I will be attempting to activate Vance Creek Ecological Reserve, CA-4252.  The Vance Creek activation spot is located about 1.5 hours drive NE of Kelowna, BC, Canada.  The access road into Vance Creek is a gravel forestry service road (FSR), just north of Lumby, BC.  I will be the 2nd person to ever activate this park, and the 1st to do it with CW.

We left home early with plans to make this another full day of playing with POTA.

Having never been here before, we drove the length of the reserve in search of a good spot and settled for a location just inside of the far-end of the park boundary at around 16:00 UTC (09:00 PDT).  We chose this location because it is one of the few areas to easily park off the roadway.  Beyond the sign titled “Woodlot” is a forestry logging harvest area (outside the park boundary).

Continue reading Activating CA-4252 With A Novel Coaxial Sleeve Telescopic Vertical Dipole →

Antennas, Field Reports, Guest Posts, POTA

Uncharted Trek into Trout Creek Ecological Reserve, CA-4221

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My goal for this summer is to do more backpacked day-trip POTA activations while I’m still physically able to. This is my 4th backpacked-in activation this past week or so. And a thank you to Thomas K4SWL for letting me share my adventures from the Canadian out-back.

Today’s goal is to activate Trout Creek Ecological Reserve, CA-4221 which is about one-hour drive south of Kelowna, BC, Canada, which is where my wife Alexis (VE7LXE) and I (VE7EFF) have lived for the past 12 years. Alexis accompanies me on all my POTA activations.

It is a beautiful late August day. The temperature is expected to be about 31℃, or 88℉.  The one-hour drive is just the beginning of the day’s adventure. We were able to conveniently park at the Summerland Golf and Country Club, but this is where all conveniences end for us.

Trout Creek Ecological Reserve has never been activated before – I’ll be the first. It’s no surprise this reserve hasn’t been activated before. It’s all wilderness with no trails to follow. I have to rely on my Garmin 66sr GPS and Pixel8 smart phone with Google Maps with Satellite View to help me navigate to and through the reserve in search for an optimal operating location.

I expected the trek to only be about 1 Km in with about 600 ft elevation gain. It’s all uphill, all the way. From the golf course parking lot, the hike starts out relatively easy. At first, there appears to be some semblance of a trail.

Continue reading Uncharted Trek into Trout Creek Ecological Reserve, CA-4221 →

Antennas, Field Reports, Guest Posts, Morse Code

Experimental Antenna Reins-in Surprising Results

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Editor note – Please enjoy this guest post from Jeff Bourgeois VE7EFF.

Today, September 6, I hope to POTA activate Inonoaklin Provincial Park CA-3626 in Southern BC, Canada, located on the shores of the Lower Arrow Lakes. On this activation, I will be using my novel experimental homebrewed Coaxial-Sleeve Dipole. The results were surprising!

We have been wanting to come back to this park since a brief visit to the area last summer.  I especially wanted to come back because, at that time, it had never been activated by anyone. I had plans to activate another park in the area that day.  Unfortunately, I was beaten to the draw just a few weeks ago by another ham.

The other reason I didn’t get here sooner was because it is a 3-hour drive east from our home in Kelowna, BC. 3-hours is pushing the limits of how far I’m willing to drive on daytrips, especially in mountainous areas. We rarely, if ever, do overnight trips.

We left the house very early in the morning on Sept. 6, 2024.  While the countryside is very beautiful enroute to the Arrow Lakes, I kind of dread the drive as the roads are often narrow, twisty-windy and up and down steep mountain passes.  At times it felt like being on a roller coaster.

Continue reading Experimental Antenna Reins-in Surprising Results →

Antennas, Field Reports, News, Portable, POTA, QRP, Videos

Field Report: POTA Energy Boost at Tuttle Educational State Forest

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Somedays, I just need a little POTA and radio-active therapy to energize the day. And this was one of those days.

On Thursday, July 18, 2024, I woke up still feeling quite tired because I had been out the entire day before helping my sister with a move–my wife and I didn’t get back home until midnight.

I was exhausted!

That Thursday, though, I still needed to hit the road again fairly early to help my sister with her home closing and then bring my dad home (finally) from the skilled nursing facility where he’d spent the previous 2.5 months!

It was a big day, and I was feeling pretty low on the energy reserves even after the morning coffee. We’ve all been there, right?

I didn’t think I would have time to fit in a POTA activation, but my father’s nursing facility contacted me and asked if I could pick him up after lunch instead of before. All of a sudden, I had a two-hour chunk of time, so, of course, I was going to get radio-active!

Fortunately, I had my GoRuck GR1 in the car, after my trip to the NC coast, packed with the KX2 and a few antenna options!

Looking at the time, I knew Tuttle Educational State Forest would be my best bet for a quick activation. Accounting for travel time and lunch, I would have about a one-hour window to operate.

Tuttle Educational State Forest (US-4861)

I arrived at Tuttle and wasn’t surprised to find the place nearly empty. Tuttle caters to school groups, and since schools were still in summer break, I didn’t expect to see any school buses or large groups.

My plan was to attempt this activation using the AX1 antenna–just to keep things simple.

I chose a picnic table in the shade and set up my gear in short order!

Gear

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On The Air

I hopped on the air hoping that propagation wouldn’t be too rough, but turns out, it was not in the greatest of shape. Anyone active in POTA lately knows this struggle! Continue reading Field Report: POTA Energy Boost at Tuttle Educational State Forest →

Antennas, Field Reports, News, Portable, POTA, QRP, Travel, Videos

Beautiful POTA activation at Brunswick Town/Fort Anderson and Afternoon in Southport!

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On Wednesday, July 10, 2024, my wife and I were in the middle of a week-long stay in Wilmington, North Carolina, while our daughters attended residential programs at NCSU and UNCW.

That particular day, we couldn’t decide what to do because the weather was fickle! Temperatures and humidity were high, fueling a constant string of isolated thunderstorms rolling over Wilmington and the Cape Fear River area. Every hour or so, a new storm would roll past.

Heather suggested I fit in a POTA activation, and, of course, I loved the idea. I just didn’t want to play radio anywhere near thunderstorms.

We decided to drive south to one of my favorite coastal towns in North Carolina: Southport. Based on the weather radar, it looked like we could drive to Southport on the west side of the river, then return via the Fort Fisher Ferry on the east side, potentially avoiding most of the isolated thunderstorms moving north along the coast.

After stopping in Leland for supplies, we made our way to Brunswick Town/Ft. Anderson State Historic Site, directly across the Cape Fear River from where I’d activated the previous day at Carolina Beach State Park (US-2722).

En route, we drove into a thundershower with rain so intense that most cars on the road turned on their hazard lights and slowed to a crawl. Visibility was nil.

Fortunately, the heaviest rain only lasted 10 or so minutes, and by the time we were two minutes from the park entrance, it had slowed to a drizzle. As we parked at the visitor’s center, it had all but cleared up.

Brunswick Town/Ft. Anderson State Historic Site (US-6834)

Brunswick Town/Fort Anderson State Historic Site is unique in that it offers a blend of colonial and Civil War history along the beautiful Cape Fear River.

Founded in 1726, Brunswick quickly grew into a bustling port town known for exporting naval stores. However, the town was burned by British troops in 1776 and never rebuilt, leaving behind ruins for visitors to explore today.

During the Civil War, Confederate forces constructed Fort Anderson atop the remnants of Brunswick. The fort’s earthen walls and impressive gun emplacements now stand as a reminder of the region’s strategic importance during this turbulent period.

Visitors can explore the colonial foundations and Civil War earthworks, while enjoying the river waterfront.

There’s also a visitor’s center with exhibits detailing the area’s rich history.

I was pleased to spot a picnic area on the opposite side of the parking lot from the visitors’ center. This would allow me to set up close enough to the car that if another storm approached, I could pack up quickly.

First, I introduced myself to the staff and asked for permission to activate. I was confident they would grant it, as this site had been activated 39 times already (mine would be the 40th).

The two park rangers inside were incredibly kind and accommodating. My wife and I ended up speaking with them about history for nearly 30 minutes. I also gave them more insight into the POTA program and asked if activators were following their rules. Fortunately, they gave a very positive report. NC State Historic Sites protect both the archaeology of the site and the natural resources, so I always ask for permission to activate because some sites have restrictions about putting lines in trees or stakes/spikes in the ground. Fortunately, this was not an issue at the picnic area.

Setting up

Since weather was iffy and since Heather and I wanted to spend the rest of the afternoon in nearby Southport, I decided to pair my Elecraft KX2 with my AX1 antenna.

This also gave me a chance to try out a new 3D-printed bipod that my friend Mike (KE8PTX) sent me.

This Bipod consists of a 3D-printed clip and knob designed by Adam (K6ARK) and two legs designed by Mike.

I was really amazed at 1.) how easy it was to attach the clip to the antenna’s BNC base and 2.) how incredibly stable this Bipod felt even compared with the OEM bipod.

Thank you, Mike (and Adam)!

With the radio set up, I was ready to activate!

Gear

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On The Air

I assumed 20 meters would be the best place to start and, frankly, I hoped it would be productive enough to cap off my activation in short order so that my wife and I could continue our travels.

Unfortunately, propagation was not compliant. Continue reading Beautiful POTA activation at Brunswick Town/Fort Anderson and Afternoon in Southport! →

Accessories, Antennas, Guest Posts, How To, News, Portable, QRP

W2AEW’s Trapped EFHW Antenna Tutorial: Building a Smaller, More Versatile Solution for Portable Operations

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Many thanks to Alan (W2AEW) for the following guest post:

Trapped EFHW antenna story (it’s all Vince’s fault)

by Alan (W2AEW)

One of my favorite antennas to use for POTA activations is a 40m EFHW wire.  When properly tuned and deployed, it can be used on 40, 20, 15 and 10m without the use of a tuner (although, I really don’t mind using a tuner when I need to).  Most of my activations are on 40 and 20m, so those bands are covered easily.  It can be used successfully as a sloper, an inverted vee, or a combination of these (whatever the trees or support structures allow).  It is efficient, inexpensive to build, lightweight and effective.

There are a few downsides to this antenna.  The first is that it is approximately 68 feet (almost 21 meters) long.  That’s a lot of wire to get in the air.  Some POTA sites just don’t have that much room or support structures to effectively use this antenna.  Another downside is that it doesn’t naturally support operation on the 30m band, another favorite of mine.

A few weeks ago, I watched a video from my friend Vince VE6LK entitled: “Discover the secret ingredients to build a trapped EFHW antenna”. This piqued my interest…

The video introduces a design for a 40/30/20m trapped EFHW.  The fact that it covers the three bands I use the most, and would be shorter than my trusty full-sized 40m, and give me 30m to boot, got me excited to learn more.

Vince used a pair of traps (30m and 20m) that are offered in kit form by Tim Sherry, N7KOM.  Here is a link to kit on Etsy.

Image Source: Tim Sherry, N7KOM

These are exclusively for use at QRP power levels – perfect for my application.  I placed my order immediately after watching the video.  The build instructions are very detailed, including how to tune the traps, which is critical in getting the antenna to work.

Image source: SparkPlugGear

He also used a 49:1 UNUN from SparkPlugGear.  I’ve had one of these in my POTA kit for a while, but only used it occasionally.  This was another good reason to proceed with this antenna build.

Of course, you could also use the QRP UNUN kit from KM4CFT that I made a video about earlier this year.

I created a video that showed how to assemble and tune the traps.  Tuning can be a little tricky, and then stabilizing the turns/spacing to preserve the tuning is critical – not hard, just takes a bit of patience.

With the traps built and tuned, the next step would be to build and tune the antenna itself.

I was able to find the time this weekend to do just that, and make a video of the process.

Details of the resulting wire segment lengths are in the video.  It is important to note that if you decide to build this antenna, your wire lengths will likely vary from mine.  Several factors will effect the resulting lengths (details of the UNUN used, the trap construction, etc.).  My video goes through the process I used to build, tune and test the antenna.

“The proof is in the pudding” as they say.  It was time to actually run a POTA activation with this antenna.  The overall length of the antenna was about 43 feet (about 13.1 meters), which is about 2/3rds the length of the 40m EFHW.  This opens the possibility of using my 12 meter Spiderbeam mast (video review) as a support rather than just relying on a tree branch.

The weather here in NJ has been oppressively hot and humid with heat indexes over 100F, so I opted for a morning activation, before the heat really built up.  The intent was to get some contacts on all three bands, even though 20m probably wouldn’t be very active.

I setup at my “home” park – Washington Rock State Park, US-1635.  I decided to setup the Spiderbeam mast as the support for the new antenna:

The rig was my trusty KX2 with the BamaTech TP-III paddles:

I only had about an hour to dedicate to operating before the family activities for the day, so I figured I’d start on 40m and get most of the “ten” there first, then move on to pick up a few on 30m and 20m.

I was able to put 14 contacts in the log, under “so-so” band conditions, which at least a few on each band, several of which were park-to-park contacts.

Here’s the map of the “reach” that the new antenna had during this short activation:

Overall I am quite pleased with the antenna’s performance.  The near ideal band coverage for my typical activations, and the ease of deployment compared to the full-sized 40m EFHW make this antenna a great addition to my POTA kit.  I suspect it will get a lot of use!

Resources:

Accessories, Antennas, Articles, How To, News, Portable, QRP

Construction Notes: VO1DR Monopod Antenna Mount

8 Comments

Many thanks to Scott (VO1DR) who shares the following guest post:

Construction Notes – VO1DR Antenna Mount for Camera Monopod

by Scott Schillereff,  VO1DR

Further to my article about radio during trip to Portugal, a number of readers asked for details on how I mounted my whip antenna system to my camera monopod for /P use.  Here are some photos and notes on this.

General notes:

  • This is a “straight-through” design.  Just direct connections from the BNC center pin to whip (via brass nut), and BNC housing to radial connector.
  • This is not a cook-book construction article, rather just a show-and-tell of how I built mine.  You can use what you have on hand to build something similar.
  • I suggest you start with your telescoping whip, so you know the size and threads for mounting bolt.
  • You could use any type of connector for the radial (wingnut, knurled nut, spade lug, alligator clip, whatever you like).  I prefer banana jacks since a) I can push in the radial banana plug fast, b) the plug is a weak release point (pulls apart if someone walks into the radial), and c) I can easily attach additional radial wires, if desired.
  • Use a strong case (metal clamshell or cast aluminum work well).  With the whip extended, there can be substantial forces (bending moment) from wind or handling. A tiny plastic case would be fractionally lighter but might fail.
  • For size, the one I used (25 x 25 x 50 mm; 1” x 1” x 2”) is about as small as I would go.  It needs to have a big enough footprint to sit firmly on a camera mount fitting.
  • Use high heat (e.g., Weller 100-140 W solder gun) when soldering the center pin wire to the brass whip mounting nut.  Solder the wire to the brass nut before you epoxy the nut.
  • I custom made the white plastic insulating bushing (where whip screws in). This was from a nearly-right bit from my junk box.  You can be creative here.  You could also epoxy on short piece of close-fitting, thick-walled PVC pipe around the outside of the whip mounting hole as a supporting sleeve to give some lateral support to whip when it is screwed in.
  • Dry-fit everything (before epoxying) to make sure nothing touches that shouldn’t and you can screw in the camera nut and whip fine.  Test proper continuity of center pin and radial connections to BNC fitting.  Once glued, there’s no going back!
  • For surfaces to be epoxied (metal nut sides and bottom, insides of mounting case), slightly roughen with sandpaper or jewellers file, then clean with isopropyl alcohol and Q-tip.  This will increase adhesion and strength.
  • Use good-quality, high-strength, long-cure epoxy (e.g., JB Weld), not el-cheapo 5-minute epoxy from the Dollar Store.  LET THE EPOXY COMPLETELY CURE BEFORE MESSING WITH IT!  Just walk away from it for a day… (your patience will be rewarded).

Figure 1 – VO1DR Antenna Mount, clamped onto top of monopod.  Coax goes to BNC on left; whip screws into top; raised radial connects by banana plug on right

Figure 2 – Antenna mount unclamped from top of monopod.  The black plastic fitting (at right, with wedge-shape) fits into slot on platform at top of monopod (at left) and clamps in with cam arm.  Large steel screw attaches wedge fitting to antenna mount case. Ruler shows scale of things.

Figure 3 – Antenna mount case (right) unscrewed from camera mount fitting.  Steel screw is standard camera mount size (1/4-20 thread size).  Black silicone cap keeps dust out of BNC connector.  If your camera mount does not have a detachable wedge fitting (like the one on the left), you would simply screw the camera mount screw directly into the bottom of the antenna mount case.

Figure 4 – Top of monopod dissembled to show (clockwise from top): black monopod tube with telescoping whip stored inside (stainless steel with 10 mm brass mounting bolt), antenna mount case, detachable camera mount fitting, and round top plate of monopod.  For my monopod, I had to remove one tiny screw and apply gentle torque to break a weak glue joint of this round piece on top of the monopod leg.  It remains a snug hand fit (no screw needed).

Figure 5 – Fully assembled whip antenna mount with wiring.  Radial (blue wire) with tie-off cord (yellow) at left; RG174 coax (5 m) at right.  Whip is only ever screwed in hand-tight.  Deploying in the field, I first tie off the monopod to something (park bench, picnic table, fence, tree), then screw the collapsed whip into the antenna mount and clamp mount on top of monopod, then plug in radial and tie the yellow cord off to something (straight out at 2 m height or slope down to ground anchor), and finally connect the coax to the rig.  When all in place, I carefully raise the whip (slowly, with two hands to reduce bending forces).  Take-down is all in reverse.

Figure 6 – Detail of antenna mount case.  Case is 50 mm x 25 mm x 25 mm aluminum clam shell box with square metal end plates.  These end plates are screwed in to hold the two halves together.  White plastic bushing provides additional lateral support for the whip when it is screwed in.  The bushing is glued to outside of case with CA (Krazy) glue.

Figure 7 – Inside of antenna mount case.  On left, a ¼-20 steel nut is epoxied to inside of case with strong JB Weld epoxy.  In main case, a 10 mm brass nut is epoxied to inside of case with an insulating washer beneath.  This brass nut connects to the whip and is “hot”, so must be insulated from the black aluminum case.  Yellow wire connects center of BNC to brass nut (soldered).  Black wire connects ground side of BNC to radial banana jack.  Use plenty of epoxy; there is a lot of force exerted on the steel and brass nuts.

Figure 8 – Detail of inside of case.  Note separation of banana jack solder post and edge of 10 mm brass nut.  Solder yellow wire to nut before epoxying in nut.

Hope you find this useful.  Just use what you have on hand and some ingenuity to make yours!

Best 72, Scott  VO1DR

Antennas, Field Day, Guest Posts, Morse Code, POTA, QRP

Experimenting during Field Day 2024

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by Vince (VE6LK)

Field Day 2024 started out with the best of plans to be spent with the best of friends and ended up totally different – and, unexpectedly, I had a hoot! With my carefully made plan behind me, my new last-minute plan was to run solo for Field Day in the backcountry of Kananaskis Country and bring along my new-to-me Nikon D3400 and lenses and rekindle my interest in (D)SLR photography at the same time as doing some experimentation with radio gear.

I grew up in a home with a scratch-built enlarger and a darkroom, so a love of taking pictures has been with me for a long time. My Father taught me patience to get the shot as he would set up a 120 format bellows camera on an air-triggered remote release to get closeups of chipmunks while we were camping, a process that took hours and yielded excellent results. My Brother, AG7GM, has attempted to instill within me the basics of composition, rule of threes and such and his wonderful skill in editing both stills and live video. While I have plenty of patience, with composition I think I’m fair to middling at best.

Thus photography has always been on my mind.

With a recent sale of a few ham radio related items, I had fun money, so just for fun I started looking [on Thursday before I activated] at used DSLRs and was shocked at how much camera I can get for such a relatively low cost compared to new. I had said once, 25 years ago when I divested out my 35mm kit, that when I could get a DSLR with a 25 to 300mm lens for <$500 I’d jump in… and finally that day is here, even if it means carrying two lenses. Of course, I started looking on the day before Field Day for deals – and scored them too! 🙂 Around these parts, good quality pre-owned consumer grade DSLRs are easily available. I purchased this as much for still photography as for ability in shooting high-quality video for my YouTube channel.

These peaks form part of the border between Alberta and British Columbia to the west

For me, Field Day has always been about the experimentation rather than chasing points. Trying new things. Changing up from the normal way I operate in the field. Comparing, analyzing and making notes as I go.

For example, and as a tribute to Chip Margelli K7JA (SK) after corresponding with his brother David, last year I attempted to wet a piece of string and see if the KX3’s tuner would match it and radiate a signal. Chip was known for many things, among them his proficiency in CW as he demonstrated on The Tonight Show with Jay Leno in 2005. David told me that he and Chip would do crazy and fun experiments like loading up clotheslines and wet string to experiment .. and it fostered a new direction I could take each FD and on some days between. The string experiment was a failure last year but I haven’t given up yet!

This year, I wanted to work with a few different antennas and a Charmast 100W battery pack from Amazon along with a USB-C PD 12v power cable for my KX3 [note: Amazon affiliate links!].

I wanted to know, in no uncertain terms, that the Charmast would or wouldn’t be as quiet as my trusty Talentcell LiFePO4 pack. The Charmast is also used in my field soldering kit with a Pinecil as it delivers USB-C PD. What better way to test this out than to head as far away from noise sources as possible, see the Canadian Rockies in their early summer glory with snow on the peaks, rivers running high (and cold) and the sun in the sky? Just for grins I would ensure that I was in POTA entities while doing Field Day.

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