Group Effort - 3 Times the fun!

W9BRI and KB9BVN at US-12023

Today we were operating from the Cikana State Fishery in Martinsville Indiana with my friend Steve W9BRI. We were checking our his new setup and hoping to make some phone contacts using his new FT-891 and the JPC-12 vertical antenna.  Steve also had the optional radial ring with four 20m radials attached.  We had some trouble getting thing to tune properly on 20m, not sure why yet but we're checking into a couple things.  I had a couple 40m radials in my SUV so we dragged those out and attached them to the radial ring and we were able to get on 40m with no issues, the LDG tuned that right up.  Steve was down here yesterday and working out some features of this new setup. What he found was when he used the 25 foot coax that came with the antenna, he was able to tune 20m with no issues.  So he made 9 contacts in about 5 minutes, and then Murphy showed and made the battery die.  

The weird thing is when we used the 50 foot coax from ABR the SWR was 14:1 on 20m and no matter what we did, we could not get it any lower.  Very odd.  We were able to get it tuned on 40m today so we went with that. 

FT-891 and LDG Tuner

Here's a shot of his setup with the FT-891 and the LDG auto tuner.  The orange coax coiled up there is the new 50 footer he got from ABR. It has ferrites already on both ends, could this be giving us trouble with the SWR being so high on 20m? 

I think he going to call ABR on Monday to see what they think. Like I said we were able to get it to work on 40m with the two 40m radials I added to the antenna. 

So at about 2PM we were on the air and hunting for POTA parks. We were planning on just hunting for Park 2 Parks today, and the first one we worked was KN4ARI down in Kentucky at US-3782.  We got a 59 from them and they were loud and clear here so we sent a 59 down their way.  We took turns working each station since we were both going to be turning in a log.  The CQWW contest is underway so the band was pretty crowded.  We still managed to work seven other parks for park to park credit today.  But was not like rolling off a log.  

About an hour or so into the activation, none other than Ivin N9IVI showed up on his awesome Honda Cub.  

N9IVI on his Honda Cub - Beautiful day for a ride! 

Ivin suggested we try using his PAR End Fed antenna to see if we could do better on 20m.  He had it deployed in about 10 minutes and we connected it to the station and it was perfect for 20m.  We had to turn the power down to 25w per the PAR documentation.  Didn't hurt us one bit. With the CQWW contest going full blast on 20m we managed to work Germany, France, and Croatia.  Giving us 11 contacts. 

Ivin N9IVI deploying the PAR End Fed 

 

We were able to tie off to the shelter uprights. Perfect. So we were about 25 feet high on the tree end, and about 5 feet high on the shelter end.  Tuned up perfectly. 

Steve had brought some other toys for us to tryout and admire.  This cool little paddle set from Putikeeg is magnetic and sticks to the heavy metal base the Putikeeg sells as an accessory.  

Here's a shot of the kit that the JPC-12 antenna comes with. Orange Coax not included. 

All in all it was a great day.  I made my first ever phone activation, so Steve, Ivin and I were happy with the results of the gear and we will definitely be back soon.  Looks like 70's next week but this is Indiana, we get snow on Halloween pretty often.  So make hay while the sun shines! 

KB9BVN, N9IVI, and W9BRI - what a great day! 

Oh before I forget, here is a picture of our QSO Map.  Pretty cool working Europe on 20m three times. 

Have a great week at work, I'll still be retired and by my calendar every day this week is Saturday! 

73 de KB9BVN

Brian

A Great Day to be in the Woods

Yesterday was just a beautiful Fall day in Indiana,  So I packed up my gear and headed out to the Morgan Monroe State Forest just south of Martinsville IN off Interstate 69.  

For those of you that don't know, on the evening of June 17th, 2026, one or possibly two tornadoes rated as EF2 or EF3 ripped through the state forest.  By the time the storm ended, the state forest faced 850 acres of downed mature trees.  Also lost in the storm was the Boy Scout shelter, the Bryant Creek Lake Shelter, and several trails and roads were left impassable.  Four months later, I was still shocked at how much damage is still visible in the park.  

Tornado Path through Forest

To give you and idea of the size of the path taken by the tornado, I am posting this photo that I got from the local weather site. To say the devastation was apocalyptic, would be an understatement.  The Indiana DNR estimated 852 acres were flattened, and 2008 acres were damaged and marked as a buffer zone. 

Fortunately the state forest here is about 24,500 acres, so there is still an amazing amount of things you can do here.  Many of the popular hiking trails are closed but many are still open.  The most popular trail is probably the Low-Gap trail (9.6 miles - rugged) and perhaps the Tecumseh Trail (40 miles with the trailhead here in MMSF). 

There are still two of the largest campgrounds open, Mason Ridge, and Oak Ridge. There is also back country camping permitted in a 1600 acre Wilderness Area set aside for backpackers and hikers.  

So I drove around for a bit, taking in all the sites, and enjoying the sweatshirt weather and bright Autumn sunshine. I finally landed at the playground area next to the fire tower and the Mason Ridge camping area.  It was completely empty, I had the place to myself, including a very nice picnic table to operate from.  

Firetower at MMSF

The fire tower is fenced in and locked so I don't think it's open to the public like the towers found in most of our State Parks.  I'd love to get a chance to operate from up there except I don't get along with heights too well...not as sure footed as I once was, and besides, I am totally a land based mammal. 

So I got the SUV parked and installed the hitch mount for my Eagle One vertical.  That all went well and according to plan, which is not what I normally run in to.  This made me wonder if Murphy was about, but things continued to go smoothly.  I attached a couple of ground radials that I use when deploying in this manner.  

After stringing the coax over to the operating position on the picnic table, I connected the antenna and fired up the KX-2. The first thing I did was check the POTA spots page to see if maybe I could hunt a few parks before getting started.  I tried in vain on 40m and 20m and I was not able to make a single Park to Park contact in hunt mode.  

Next I tuned around on 20m to find a quiet spot, I was worried that the band might not be cooperating again today since I was not able to raise any parks while hunting.  I ended up on 14039 Khz and started calling CQ POTA.  I had a contact a minute for the first five minutes.  So the band was open.  I logged TX, FL, NH, and Ontario right off the bat. 

KX-2 tuned to 14039 Khz - worked like a dream

The infamous POTA mobile...great cell coverage BTW...I wonder why

By the time I wrapped up, maybe an hour later I had sixteen contacts in the log, ten are required to be a successful activation.  My best DX contact was with SQ9JS in Poland!  He must have amazing ears to hear my 10w signal from the park in Poland.  He gave me a reception report of 319.  This means he was barely receiving me, my signal strength was very low, and my CW tone was stable and unwavering.  Most of my contacts today were TX, FL, and MN. 

Map of my contacts today - I was very happy to work Poland! 

Winter is coming, and we won't be having a ton of days like this, so when one comes along, take advantage and get outdoors.  The fresh air does wonders for the daily doldrums of day to day working life. (I'm retired, every day is Saturday)

I think the next time I go out I will bring my new Pebble HF radio and see if I can get 10 contacts using it and my vertical. That should be fun! 

Until the next time...73 and best DX to you and your shack. 

de KB9BVN 

Brian

Kit Building - The Pebble

So I have been busy with family stuff the last 5 or 6 weeks, went to Navarre Beach Florida for a week vacation two weeks before the hurricane hit, among other things. I have not had a successful POTA activation in about six weeks. So I have been enjoying being retired, and staying reasonably healthy these last few months. Today was going to be a good day to go to the parks and setup my station, I had everything ready to go, and it started raining. Here it is the middle of October, we've had no frost yet, no snow yet, and today it was 85 degrees and raining. Supposed to get a lot cooler next week. We'll see. This is Indiana. 

Sometime about mid May I heard about a new radio called The Pebble. This radio is being sold by Mike and Becky, AKA The Ham Radio Duo. This is a single band radio for 20m, designed in collaboration with Barb WB2BCA and Guido PE1NNZ. Barb is the designer of the uSDX radio, he does great work! So I placed my order in May....and I knew there was going to be a waiting list. 

My Pebble kit arrived last Friday! I was tied up with stuff all weekend so I didn't even get a chance to fondle the parts and pieces and dream about all the QSO's I was going to have. Let me tell you a little about this radio, it's been out there a while now so you may already be aware but here goes my impression. 

This is a single band 20m radio, capable of SSB and CW and with the right cables cobbled up, it'll do the FT modes. It can be used with a set of paddles, or a straight key. It puts out a little over 5 watts into my dummy load with a 12v DC power source. It will also run in QRPp mode off a USB-C 5v power feed. It has abuilt in microphone, or you can plug in an external microphone. It has a BUILT IN straight key and can accomodate an external paddle or straight key. There are bandwidth filters you can set for 50, 100, 200, 500, 1800, 2400, and 3000hz. Making the filtering good for CW or SSB. Adjustable tune rates of 1Hz, 10Hz, 100Hz, 500Hz, 1Khz, 10Khz, 100Khz, and 500Khz for quick tuning through the 20m band. Also on the easy to use menu system is RIT, AGC, Noise Reduction, 2 levels of Attenuation, three different S-Meter settings, A CW Decoder, CW Tone adjustment, QSK, Keyer speed, a Practice mode for those learning CW, VOX, and a few more tweaks. My kit is Version 1.0.7, dated June 3, 2026, and I have the v 2.7 PCB. 

The first thing I did was visited the builder website: https://hamradioduo.com/pebblehf-quickstart/ Here the Duo has links to download the assembly manual, and Youtube videos of a building session, plus information on operating The Pebble. All in one place. So I downloaded the assembly manual and put it in a binder so I could read along as I started my build.

This kit is entirely open source as well, so if you are inclined, you can download the source and start working on one from scratch.

• Hardware: PEBBLE 20m HF Transceiver by Barb WB2CBA
• Firmware: usdx-pebblehf by Mike N4FFF and based on uSDX by Guido PE1NNZ
• 3D Case: Print Your Own Pebble HF Case

I need to explain a couple things...I have not successfully built a kit of any kind in about ten years.  I love building stuff and using it on the air but my eye sight and steadiness of hands has taken a turn for the worse. So I was a little concerned that I was going to solder glob this thing and it would end up in the scrap heap...but it was raining, I was trapped at home, and besides....I had already rounded up all my kit building stuff and had it in one place.  So I decided to go for it, slow and with lots of magnified inspections. 

So here is where I started: 

ALL the surface mount parts are already mounted.  There is HOPE.  

The first parts I had to install were the two toroids.  Yes toroids. I have never been afraid of toroids, but these guys are tiny.  One needed 7 turns of mag wire, the other one got 9 turns. Here they are installed, I took my time stripping the enamel off the wires, you can't do a good enough job on these.

Next came the transistors, all three are the BS170 variety found in so many QRP radios these days. They are close together, side by side. If I had one suggestion, it would be to have these socketed.  The BS170 is a cheap transistor and can be found just about everywhere, but they are easily killed by the builder and operator. 

Next thing to be installed was the Diode. Cathode UP, do not install this backwards. If you do the radio  will no-workie. 

Next I installed the DC power jack, it can only go on one way so I was safe there. 

And then it was time to install the PCB mounted BNC antenna jack.  This jack has four solder points, make sure you get them all and use plenty of solder, this jack will have a heavy antenna attached eventually.

Now we are done putting parts on the back of the PCB, now it's time to attach the LCD screen. The header is 16 pins, on the top, and 16 pins on the bottom.  By now my eyes were getting fatigued, I took a break before starting this section.  My soldering job looks downright amateur...but hey, I ain't getting paid for this. 

When soldering the pins on the bottom of the PCB I accidentally touched the DC power jack housing with the soldering iron.  It's ugly but it's ok. 

Next I added the tuner pot, pushbuttons for the menus, the microphone element, and the little straight key doo hickey. 

Time for the smoke test.  I will admit it did not go well at first.  My display was only showing a row of little black boxes.  The Ham Radio Duo assembly Youtube explained this is caused when the builder slobbed the job of the 32 solder joints to the display.  So I broke out my magnifying glass, and did a close order inspection of my shameful and disgusting solder job and I found two cold solder joints, and two pins I didn't even have soldered.  Did I mention this is the first kit in 10 years?  After I fixed those, I applied power, and quite frankly I would not have been surprised if it burst into flames in front of my eyes.  But it didn't.

SUCCESSFUL SMOKE TEST!!  IT POWERED UP!!

Power was delivered via a 12v lithium battery that I use in my KX-2.  Plus I had a nice old Norcal dummy load attached.  I was beside myself with glee and joy and the birds were singing, and I saw unicorns in the backyard.  It was a special moment....so I yelled to my wife "HONEY!! IT'S ALIVE!!" and her response was "That's nice." 

So the last thing to do was to put it in the 3D printed case that came with it, and verify the power output.  Using my ever trusty but never rusty WM-2 QRP Watt Meter on the 10W setting, and the Norcal dummy load, I keyed it up and saw a smidge over 5 watts.  My day was made. 

I sent out a few CQ's using my Nye Viking Master Key and got no takers. The band was weak as a baby bird...but...The Reverse Beacon Network was hearing me.  My antenna is a 40m half wave in the attic, and using a LDG auto-tuner to make it do something on 20m. Not a great antenna for 20m. 

So tomorrow I will be ready to have my first QSO on the Pebble rig.  I can hardly wait. 

The Pebble is a $50 radio. Capable of being heard around the world....with the right antenna.  

Visit https://pebblehf.com/ to learn more about this cool little radio. 

UPDATE FOR 10/15/2026

I made my first contacts this morning, the first was to K5DOE, Jeff at Deer Camp in Tate Hills Park near Magnolia Arkansas.  Jeff awarded me with a 599. 

My next contact was with Joey WN4AT, he was at Oak Mountain State Park near Sterrett Alabama.  Joey gave me a 559.  

The band is very mushy today, I switched between my K2 and the Pebble and the receive audio was about the same on both....low and somewhat muffled.  The numbers for right now are not the best, with the A index over 8 it gets hard to hear. 

SSN:124 SFI:123 A:10 K:3

73 de KB9BVN

Brian

I'm back! Took July off!

KB9BVN at US-4183 

Well I took July off from POTA, we just had too many things going on and did not have time to get out and activate any at all. So I have been looking forward to hitting the trail again and getting outdoors with my portable station and making some contacts. Besides, it was pushing 100F most of the month. 

Today I went back to US-4183 Atterbury Fish and Wildlife Area in southern Johnson County between the city of Franklin and Edinburgh.  This was my 49th time to activate from this location.  I can't help it, it's less than 30 minutes from home, so why not? 

I drove around a bit looking for a site with some appreciable shade, I found a nice parking area and setup my station in the shade of a giant Walnut tree.  The temperature was a balmy 83F and the horse flies were thick as peanut butter on a popsicle.  Once setup I decided I would do some hunting before I went to the POTA website and spotted myself.  It took me almost an hour to contact six other parks on 20m, the bands were very muffled, and the speaker in the KX-2 is not super loud.  Next time I will bring headphones, but I hate using them when it is so hot. 

I spotted myself on 10110 Khz at first, this is the 30m band, and when it's good, it's real good.  Today that was not the case.  The column marked SNR is basically a indication of my signal strength being heard in various locations on the map. Usually for me, anything under 11 or 12 db is not going to get me any contacts. I ended up with ONE.  That was it. 

See below: 

Then I decided to give 40m a try, I spotted myself on 7063 Khz and started calling CQ.  This went on for about 15 minutes with no takers then it was like someone turned on a switch in North Carolina.  I got four more contacts in about 5 minutes all from North Carolina!  My SNR rating never did get much above 10-12db.  After I logged contact number 11, I had been at it for almost 90 minutes. I have usually gotten my minimum of 10 contacts in less than 15-20 minutes.  Not today.  

You can see my 40m map below:

I was using the Eagle One telescoping vertical mounted to my hitch on the beloved POTAmobile, which is old enough to vote.  The old 2006 Trailblazer cracked 200,000 miles last month...I think I need to start looking for a replacement soon. I buy used, then drive the wheels off. I have owned this one for the last 12 years. 

One last photo...here's the logbook and my KX-2 in action! 

Until next time, have a great summer, what's left of it.  Only 49 days of summer left...USE THEM WELL!! 

73 de KB9BVN
Brian

Another day at Atterbury Fish and Wildlife Area

 

Another Day in the Great Outdoors at Atterbury

Another beautiful day today, low humidity, and temps in the upper 60's to mid 70's. Bright sun, and a slight breeze. So nice.  So I packed up the gear and headed to the park at about 12:30pm, drove around for a bit looking for a shady spot to erect the POTA station.  I stopped at several familiar places, Beaver Bottom Lake had no shade and about 15 people fishing off the dock.  I did not see any fish being caught but they were having a great time. I then drove over to Stone Arch Lake, and the parking area was also without any shade.  Since it was about 1PM the sun was almost directly overhead. I finally landed at Mink Meadow Marsh, under the shade of a big walnut tree that was hanging over one corner of the parking area. 

Once again at Mink Meadow Marsh

So today I decided I was going to make this a quick one and I would go ahead and use my Alex Loop antenna.  It's very easy to setup and tune, and goes a lot faster than the hitch mounted portable vertical. 

Alex Loop with my Elecraft KX-2 radio in its handy pouch

After I got the antenna assembled and in place, I broke out the KX-2 and remember to turn off the auto tuner.  When you are using a Magnetic Loop antenna, you tune it by adjusting the variable capacitor in the rectangular box at the bottom of the loop.  This is why you must set the autotnier in the radio to BYPASS.  I started out on 20 meters, 14.058 Mhz to be exact.  I got on the air at 1:13PM EDT and almost immediately started making contacts.  I worked Idaho, Newfoundland, Maine, Oregon, and Nevada in the first ten minutes.  Not bad for a Mag Loop and 10 watts. The band was really working well this afternoon.  At 1:40PM I shut the station down with 12 contacts, enough to qualify as an activation of this park, my 48th time to activate this park.

KX-2 radio and log book, ready to go to work! 

From the looks of my contact mapping, I had the antenna angled so it was radiating East-West. Worked both coasts and a bunch in the middle. 

Weatherman says we have more severe weather on the way, and to expect rain and storms the next three days, with over 3 inches of rain expected in total.  Indiana has logged 71 tornadoes so far this year.  We had one last Friday night the ripped through the Morgan Monroe State Forest, cutting a swath of knocked down trees 1/4 mile wide and about 8 miles long.  I will try to make to MMSF next month to do some POTA work....but I want to give the DNR a few weeks to get things cleaned up a little bit. 

Until next time, 73 es Best DX to you! 

Brian KB9BVN

Beautiful Day to be Outdoors!

 

KB9BVN at the key, ready to POTA!

Gosh what a great day weather wise.  Here in central Indiana it was over 90 degrees every day last week, and every night we had torrential rain and thunderstorms.  One system even spawned about half a dozen tornadoes in the northern third of the state. Fortunately no one was killed. 

Here is it Monday again, or Saturday to those of us that are retired, and the temperature was 65 degrees when I rose this morning.  Sunny, and cool...perfect day for POTA at the park.  So today I headed back to US-4183 Atterbury Fish and Wildlife Area in southern Johnson County.  I used the Eagle One portable vertical, the KX-2 radio, and the KX-2 paddles.  Getting the antenna erected and the operating position setup took about fifteen minutes or so. 

The location I chose today was called "Mallard Marsh".  I think I have operated from here before but it has been a couple years or so since the last visit.  I took a short hike back to the lake and the marsh area, and using the Merlin application on my phone I logged 7 different bird species. Including a rare to find these days, Bob White Quail.  I heard it but I never found the location for a picture.  Maybe next time. 

Mallard Marsh has no restroom, and limited parking 

The sky was really beautiful this morning, and the clouds were rolling but no rain predicted here until maybe Thursday. 

Looking east at the beautiful sky and the slow moving clouds

Before I started operating I took a quick hike down to the pond and by the marsh.  Pictured here at the current state of things, this place is usually crowded with ducks and geese and all kinds of birds in the Spring and early Summer. I heard several bullfrogs but did not see them. 

Here is a shot of my setup with the Eagle One vertical.  It mounts to my trailer hitch, and has a large clamp that clamps on the ground side of the antenna, making my Trailblazer in to a counterpoise, or radial if you prefer.  I also clip on 2 wires made from 18g speaker wire, each about 22-23 feet in length to help the antenna tune up better on 40m.  One of the wires I lay across the top of the vehicle and out over the hood...gives it some elevation.  Does it help? I don't know but I like to think it does.  The other wire I just deploy to the ground and let it lay there. 

Today the bands seemed to be in OK shape.  I started out on 40 meters at about 12:15PM EDT.  It took about 20 minutes to get the first three contacts.  Granted I was only running 10 watts.  I switched to 20 meters (longer distance) and immediately worked California, Florida, and Nebraska.  Then 20 meters seemed to go quiet, so I switched back to 40m.  

After about 90 mins, the DNR showed up with a John Deere mower...and proceeded to mow all around me while I was operating.  The noise being generated by the mower engine was enough to cover up anything I might hear.  The DNR lad was very nice and I showed him what I was doing and how much fun amateur radio is.  So at about ten until two o'clock, I packed it in.  Finished with 13 contacts, all I need is ten for a valid activation.  Done and Done. 

Here's a map of my contacts from today:

It is supposed to be nice again tomorrow, so I may try to run down to the fishery in Martinsville Indiana, or maybe even down to Lake Monroe in Bloomington. 

Until the next one,  may you have the best DX and all the contacts you need! 

73 de KB9BVN

Brian