Oops! Operator Error!

I was out and about on a rainy and foggy Friday morning. Since I was in the vicinity, I made a stop in Ridley Creek State Park (US-1414, KFF-1414) for a quick activation. I completed the activation successfully, despite some self-inflicted problems.

I pulled into ‌a convenient parking spot. Not surprisingly, the picnic area I was in was completely deserted. Since the weather was miserable, I planned to use my Elecraft KH1 in the truck with my trusty 12-foot base-loaded whip on the back.

As I was setting up the antenna, I noticed my first issue. The spot I had hastily chosen was under a tree—a large, rain-drenched one. Rookie error! Fortunately, my 12-foot stainless steel whip went up in between the branches and didn’t appear to be touching any of them. (Note to self: Look up next time!)

Rainy and foggy morning in Ridley Creek State Park (US-1414, KFF-1414)

I finished up with the antenna and got the KH1 set up for 40M. Normally, with this antenna, the KH1 easily finds a good match on the first try. Not this time. It would find a good match (1.5:1 or better), but the SWR would occasionally jump full scale. I had to hit the KH1’s ATU button to re-tune frequently, sometimes mid-QSO. Thinking it was the wind blowing the whip into the wet branches above, I backed the truck up a foot or two to clear the tree. That didn’t help.

After stumbling through seven contacts on 40M, I went out to change the antenna tap for 20M. As I did that, I realized what the problem was. On my last activation, I was using the KH1’s whip antenna, and I neglected to set the switch for using the BNC connector. The BNC jack is always connected, but the “20M” setting puts in some additional inductance for the whip. It appears extra loading was the source of my issues on 40M. Once I corrected my mistake, things continued normally on 20M and 17M.

Despite my struggles, I completed my brief activation with 22 contacts in my log. It was good to put a few DX stations in the log:

20M: CU3DI, F1BLL
17M: OE3KAB

All’s well that ends well, I suppose. My switch error got my activation off to a shakey start, but I got it done. Having already experienced blown finals with this rig, I’m usually mindful of the antenna switch setting. Still, I used my trusty label maker to put a reminder right on the radio.

Label added to the front of my KH1 to remind me to check the antenna switch

Take that, Murphy!

72, Craig WB3GCK

Coming Out of a Slump

I’ve been in a bit of a ham radio slump lately. It had been nearly three weeks since my last park activation, and I’ve only had a few QSOs from the home station. Our temperatures have finally gotten above freezing this week, so I headed out to Evansburg State Park (US-1351, KFF-1351) for a long-overdue activation this morning.

With the slightly warmer temperatures this week, the snow and ice from last month’s storm are finally melting (a little). Even though the temperatures are above freezing, we still have what I refer to as “refrigerator weather.” Still, I braved the chilly weather and operated outdoors today.

The Evansburg State Park entrance sign with the dirty remnants of last month's snow — The Evansburg State Park entrance sign with the dirty remnants of last month’s snow

I was the only person in the park this morning, so I had a large picnic pavilion to myself. Of course, there usually aren’t many picnics on a weekday morning in February. I went with my Elecraft KH1 and whip antenna with a right-angle adapter from Tufteln. I ran my counterpoise wire out across the snow.

WB3GCK operating at Evansburg State Park (US-1351, KFF-1351) — Operating at Evansburg State Park (US-1351, KFF-1351)

I started out on 40M with the Elecraft AXE1 extension coil. As always, the little whip antenna amazed me with how well it was getting out. I logged eight contacts in the first 10 minutes before the action slowed. After logging 11 contacts, I moved up to 20M. The action was a little slower there, but I still managed seven more contacts.

The view from my operating position this morning

My coffee mug was nearly empty, so I called it quits after an hour on the air. I finished up with 18 contacts in my log. Not bad for a 45-inch antenna and “fair” band conditions, I suppose.

It was fun getting back out in a park again. Hopefully, I’ll get in another activation or two before the next round of snow shows up.

72, Craig WB3GCK

Thinking Inside the Box

I’ve been very happy with the soft case that came with my Elecraft KH1 Edgewood Package. It has room enough for the KH1 and most of the accessories I typically use with it. Although I’ve been very careful with the KH1, I somehow damaged the stock Elecraft paddles that came with it. I’m not sure how I managed to do that, but that prompted me to start looking into a hard case for transporting this expensive little radio.

[Note: This post is not sponsored, and there are no affiliate links.]

Fortunately, others have gone before me in this quest, so there are a variety of boxes that others have tried. KR8L wrote a blog post about using a Pelican 1040 case for his KH1. K4SWL had a blog post and an excellent video showing a bunch of hard cases suitable for the KH1. Somewhere online I saw mention of the Apache 550 as a less expensive option from Harbor Freight. Commercially, Tufteln sells a Pelican M40 case modified to fit the KH1 and its whip antenna.

Now that I had a mind-boggling array of options to consider, it was time for the next phase of my project: over-thinking and over-analyzing.

While most KH1 users carry the bare minimum of items to get on the air. I, however, tend to over-pack. With the original soft case, I could carry everything I needed for pedestrian-mobile, picnic-table-portable, and stationary-mobile operations. Being a soft case, it has a little “give” to it when I squeeze in some extra items. So, for my purposes, I wanted a box at least large enough to hold everything I carried in the soft case.

After much agonizing, I settled on the Pelican M50. With exterior dimensions of 8.10 x 5.50 x 2.90 inches, it’s somewhat larger than others use. However, it easily holds everything I carried in the soft case—and then some.

Pelican M50 MicroCase with my KH1 and accessories (see text for contents)

Here’s what I have in there:

Elecraft KH1 Edgewood package
(2) 13-ft counterpoise wires
(1) 20-ft counterpoise extension for 40M
K6ARK Pressure Paddle
N6ARA TinyPaddle & KH1 Adapter
Earbuds
Elecraft AXE1 40M Extender
Tufteln Angle Adapter
Tufteln Right Angle Adapter
SO-239 to BNC-M adapter
Right angle BNC adapter

I placed the KH1 on top of the counterpoise wires for some cushioning, but the KH1 still flopped around a bit. I found that placing a 3×5 inch notepad under the KH1 kept it in place with the lid closed. So, the notepad and a full-size mechanical pencil are now part of the kit. No problem, since they will get used for picnic table operations.

Pelican M50 MicroCase. The counterpoise wires and a notepad are under the KH1.

Although I already have a bunch of stuff packed in there, I’m still thinking about adding a random wire antenna and maybe some throw line. I might just keep that stuff in my backpack, though. We’ll see.

So that’s what I wound up with. In typical fashion, I probably packed more than I should have, but the overall weight of my backpack hasn’t increased very much. Plus, I like to think I’m minimizing the possibility of forgetting something in the field.

72, Craig WB3GCK

Keeping My CW Fist Warm

My old, arthritic fingers aren’t what they used to be, especially when sending CW in colder weather. I’ve tried a variety of gloves over the years, but they have each had their drawbacks. Recently, my (far) better half stumbled across an inexpensive pair of gloves that seem to be just what I’ve been looking for.

[Note: This post is not sponsored, and there are no affiliate links.]

I mentioned my cold weather CW dilemma to my (far) better half in passing, and she found an interesting pair of gloves on Amazon a few minutes later. They are the Glider Touch Screen gloves for $8.99 (USD). At that price, I took a chance and fired off an order to try them. After measuring my hand and using their sizing guide, I went with the large size. Glider Gloves is a Canadian company, and our friends to the north certainly know a thing or two about cold weather.

Some reviewers on Amazon complained about these gloves having a snug fit, but that’s exactly what I’ve been looking for. I use iambic (squeeze) keying and paddles with a light touch, so bulky gloves can make accurate sending difficult.

This is how I normally send while holding a pencil. These touchscreen gloves allow me to do that with no problems.

I tried my new gloves during a recent POTA/WWFF activation. They definitely have a snug fit, but they conform nicely to the shape of my fingers. There’s no excess material in the fingertips to interfere with keying. Normally, I use the paddles while holding a pencil, so I can quickly alternate between keying and logging. I found I could still do that with no issues. My log’s legibility was no worse than my normal chicken scratch.

My Glider Gloves. (See the Amazon website for better pictures) — The Glider Gloves. (See the Amazon website for much better pictures.)

They also worked great when I entered my spotting information using my cell phone. To facilitate use with touch screens, they have some copper woven right into the material. My typing on the phone was about the same as my normal “fat-fingering.”

Since they are thin and form-fitting and have some non-slip material on the palms, they are good for other tasks requiring manual dexterity. Normally, I have to take my gloves off at some point when installing the antenna on my truck. This time, however, I had the Glider gloves on and had no problems screwing the parts together.

The temperature in the truck during my brief activation was about 45° F (7° C), and my hands stayed reasonably warm. The manufacturer says they’re good for “moderate temperatures,” so I probably wouldn’t wear them on an Artic expedition. Regardless, they are a whole lot better than no gloves at all—which is how I sometimes operated in the cold. I can also put my regular gloves on over them if I need to take a break from sending.

I had hoped to use them during Winter Field Day this year, but some personal obligations and a snowstorm forced me to sit this one out. According to the weather forecasts, we have a lot more winter weather ahead of us here in Pennsylvania, so I’m sure these gloves will still get plenty of use.

There are lots of similar gloves on the market, so there may be better options out there. Since I tend to avoid operating in extremely low temperatures anyway, I think these should do the job for me.

72, Craig WB3GCK

Boschveldt QRP Winter Outing 2026

For the third year in a row, the Boschveldt QRP Club (W3BQC) held its annual winter outing in a cabin in French Creek State Park. For a variety of reasons, we had a smaller than usual group this year. Regardless, it was a fun weekend of catching up with old friends, eating some good food, and playing radio in the park.

When I arrived Friday afternoon, Ed K3YTR was already in the cabin. After unloading my gear and settling in, I wanted to squeeze in a quick POTA/WWFF activation (US-1355, KFF-1355) before the rest of the crew arrived. I operated from the truck using my Penntek TR-35 and 12-foot loaded whip. After 14 quick contacts on 20M and 17M, I headed back inside the cabin to warm up.

ED K3YTR with his KX3 station in a box — Ed K3YTR with his KX3 station in a box (Photo credit: NK1N)

Glen NK1N rolled in from New Jersey later in the day. He put up an 85-foot inverted vee and used his Elecraft KX2 from inside the cabin. Over the course of the weekend, Glen activated the park using our club’s callsign, W3BQC. We wrapped up the first day with a lasagna dinner and some socializing.

Walt KB3SBC also stopped by on Friday and stayed for dinner. Special thanks to Walt for making sure we had a coffee maker and plenty of coffee for the weekend—a crucial part of every Boschveldt QRP Club gathering.

On Saturday morning, we had some snow starting. I drove over to the Hopewell Lake boat launch for another quick activation before the roads got too bad. Using the same setup as the day before, I hopped on 40M. The activity was fast and furious. After about 30 minutes, I had an inch of snow in the bed of the truck, and it was coming in through the window I fed my coax through. I wrapped up with 28 contacts in my log, including an ear-shattering park-to-park QSO with W3BQC (NK1N operating) less than a mile away back at the cabin.

WB3GCK operating at the boat launch in the snow

Snow piling up on my homebrew loading coil

Later on Saturday, Ed K3BVQ joined us and set up his MFJ travel loop antenna inside the cabin. With his indoor antenna, Ed was busy making contacts with a four-watt YouKits rig and a straight key. Chris W3CJW also stopped by for a visit.

Ed K3BVQ operating from the cabin with his indoor loop antenna

Saturday evening we drove into town for dinner at a local restaurant. We capped off the night by watching an old science fiction movie projected onto a screen hung on the wall.

We woke up Sunday morning to another round of snow. After breakfast, NK1N and K3BVQ got back on their radios to make some more contacts.

During the weekend, we noticed that Ken N3CU was doing a POTA activation somewhere in the park. It turned out that Ken and his XYL, Stephanie, were in a cabin just down the road from us, and they stopped by for a visit. Ken and I had worked each other many times over the years, so it was a pleasure to finally meet him in person. Ken had a successful weekend, completing his POTA Kilo award at French Creek. By virtue of his visit, Ken also became our newest Boschveldt QRP Club member.

Ken N3CU and his XYL (and future ham), Stephanie, stopped by to visit on Sunday morning.

K3BVQ and I packed up to head out on Sunday afternoon, while NK1N and K3YTR stayed over for one more night. According to the POTA website, W3BQC had close to 80 contacts over the weekend.

In true Boschveldt QRP Club fashion, our weekend get-togethers are as much about socializing as getting on the radio. Although illness and competing obligations prevented some of our regulars from attending, it was great to spend the weekend hanging out with some old ham radio friends.

72, Craig WB3GCK

Testing a New Mag Mount

On those occasions when I do an activation with my (far) better half’s car, I have been using my Gabil GRA-7350TC antenna on an old magnetic mount. Because of a recent issue with the mag mount I’ve had for 20+ years, I finally had to replace it. Today was the first opportunity I’ve had to use the new one.

While visiting my daughter and her family over the Christmas holiday, I headed out to activate the Captain John Smith Historic Trail (US-4567). Normally, when using the GRA-7350TC and mag mount on my (far) better half’s car, I can easily get the SWR down less than 1.5:1 on 40M. This time was different; the tuning seemed very finicky. I eventually got it close enough to use with the KH1 and completed my activation. As I was packing up, I noticed some damage to the coax where it enters the mount.

This old mag mount has seen many years of service with a VHF/UHF antenna on my truck before being pressed into service with the Gabil antenna. It’s amazing it lasted as long as it did. I decided that trying to disassemble and repair it was more trouble than it was worth.

I ended up buying a Tram magnetic mount on Amazon. This one is a real beast. It’s five inches in diameter and weighs a whopping 2.6 pounds. It’s probably overkill for my intended use, but I figured the larger diameter would provide better coupling to the vehicle. (Spoiler Alert: It does.)

My new five-inch magnetic mount — Tram magnetic mount

To try it out, I headed out to Marsh Creek State Park (US-1380, KFF-1380) and set it up on my truck. The attached coax is 17 feet long. That’s way more than I need, so after feeding it through the passenger-side window to my Penntek TR-35 (5 watts, CW), I coiled up the excess.

The Gabil GRA-7350TC antenna and magnetic mount on my truck

I started out on 40M and was surprised to see I could tune‌ the Gabil antenna down to 1.3:1 SWR. That’s better than I could ever get using the old mag mount on my truck. It was slow going on 40M this morning with a lot of fading. I could only manage about nine contacts before moving up to 30M.

Up on 30M, things picked up dramatically, but the most productive band was 20M. My contacts on 20M included Germany, France, and two from Finland. After logging 42 contacts, I pulled the plug and headed home for lunch.

So, the new mag mount should work great on my (far) better half’s car. Sadly, my old mount is now destined for the trash. I certainly got my money’s worth out of it, though.

72, Craig WB3GCK

Farewell 2025, Hello 2026

Going out for back-to-back park activations on the first and last days of the year has become something of a tradition for me. Since my (far) better half and I had no special plans, I happily carried on that tradition. Plus, my New Year’s Day activation had a special significance this year.

New Year’s Eve

I wrapped up 2025 with a trip to French Creek State Park (US-1355, KFF-1355). As with my last visit to French Creek, the weather was unpleasantly cold. Here in southeastern Pennsylvania, we’re in the midst of a stretch of days with temperatures below or near the freezing point.

The antenna project I tested last time was ready for another round of measurements. With the temperatures forecasted to remain below freezing all day, however, I didn’t bother to bring it along.

So, I hunkered down in the truck with my Penntek TR-35 (5 watts, CW) with my 12-foot whip and homebrew loading coil on the back of the truck. When I powered up the radio, I was pleased to see I wasn’t the only early-morning station on the air. My log quickly started filling with familiar hunter callsigns. In fact, it took only nine minutes to make my first 10 contacts. I spent most of my time on 40M, but also worked several stations on both 30M and 17M.

My truck and antenna at French Creek State Park near Hopewell Lake — New Year’s Eve at French Creek State Park (US-1355, KFF-1355)

With my supply of hot coffee running out, I made my last contact of the year. That was a park-to-park contact with G0UUU/M. It took about a dozen tries before Phil correctly copied the last two letters of my callsign. Mine isn’t the most CW-friendly callsign, so I appreciate his patience in digging my QRP signal out of the noise. After that, I quickly packed up, cranked up the heater in the truck, and headed home. I ended my activation with 42 contacts, including five that were park-to-park.

Looking back, 2025 was a pretty good year for me. I earned my first-ever Kilo Award early in the year and earned Kilo Awards at four more local parks after that. Plus, a DX park-to-park contact was a pretty good way to wrap up the year.

New Year’s Day

On this day back in 2016, ARRL kicked off its wildly successful National Parks on the Air (NPOTA) program. This one-year program led to the massive popularity the Parks on the Air (POTA) program enjoys today.

So, 10 years ago, I headed out early on New Year’s Day for my first-ever formal park activation from Valley Forge National Historical Park (US-0761, KFF-0761). That was far from my first time operating from a park (and Valley Forge in particular), but it was my first time activating in a formal parks program. To recognize the ten-year anniversary of my first park activation, I headed back to Valley Forge. This time, though, I was about a mile away from where I parked back then.

I still have the old Yaesu FT-817 I used 10 years ago, but I went with a more modern rig: my Penntek TR-35. This rig lets me keep both paddles and a straight key connected at the same time. January is Straight Key Month for the Straight Key Century Club (SKCC), so I would be ready if I heard any K3Y special event stations.

Mother Nature welcomed in the new year with freezing temperatures and a coating of snow from an overnight snow squall. Traveling on the back roads was a little tricky, but I arrived without incident. The trailhead parking lot I was in was fairly busy with hikers and dog walkers.

New Year's Day at Valley Forge National Historical Park (US-0761, KFF-0761) — New Year’s Day at Valley Forge National Historical Park (US-0761, KFF-0761)

Using the same equipment as the day before, I quickly set up and got on the air. Boy, the bands sure were busy. I split my time between the 40M, 20M, and 17M bands, and there were lots of early-risers out there hunting.

I was feeling a little under the weather, so I packed it in after about an hour. I ended up with 42 contacts, with a couple of park-to-park contacts. Some highlights included:

W6LEN in California on 40M. (Forty seemed long this morning)
F1BLL on 20M
IK2XDF, IK1GPG, and DL1AX on 17M

So, 2026 is off to a good start for me, and I hope it’s a good one for you, too. Here’s wishing you a happy, healthy, and prosperous new year.

73, Craig WB3GCK

Happy Holidays!

Before I head off to spend some time with family, I just wanted to wish everyone a Merry Christmas and Happy Holidays. Thanks to all of you who dropped by the blog this year and those I’ve had the pleasure of working on the air.

AI-generated of Santa in his sleigh operating a mobile radio with an antenna on the back of the sleigh.

Here’s wishing you and yours all the best for the holidays. May your holidays be filled with good company, warm memories—and maybe that new radio gear you’ve been eyeing up.

73, Craig WB3GCK

The Weather Was Cold – 40M Was Hot

I drove out to French Creek State Park (US-1355, KFF-1355) for an early morning activation. While I was there, I wanted to do some initial testing on an antenna I’ve been working on. With the near-freezing temperature, I picked the wrong day for antenna testing. Fortunately, the activity on the bands made the trip worthwhile.

I designed the new antenna to be attached to a picnic table, so I parked by a picnic area near a boat launch. My original plan was to set up the antenna and take some antenna analyzer readings after my activation. My impatience got the better of me, so I decided to brave the freezing temperatures and test the antenna right away. That wasn’t a smart move. By the time I got the antenna set up and took some SWR scans, my fingers were numb. I should have waited for it to warm up a little.

Taking some measurements on a new antenna I'm working on — Doing some antenna testing prior to my activation

I was hoping to hook up my Elecraft KH1 and see how it worked with the antenna, but that wasn’t happening. After tearing everything down and packing up, I sat in the truck with my gloves on and the heater running until my fingers thawed out. Then it was time to get on with my activation.

I quickly set up a 17-foot whip and my homebrew loading coil on the back of the truck. Up in the cab, I set up my trusty Penntek TR-35 (5W, CW). I went with a 17-foot whip because my band conditions app showed an unsettled geomagnetic field and poor daytime conditions on 40M. I figured the extra length couldn’t hurt.

My truck with 17-foot whip at French Creek State Park

When I fired up the TR-35 on 40M, I heard lots of activity and some very loud signals. In fact, I had to search around for a clear frequency. Once I started calling CQ, the hunters immediately pounced. I had constant pileups for the first 20 minutes. I had my first 10 contacts in about eight minutes.

About 30 minutes in, I had worked 29 stations on 40M. The 20M band wasn’t quite as productive, but it still produced 22 more contacts. Among those was one with IZ2UUG in Italy. When I pulled the plug after an hour on the air, I had 52 contacts (before removing a dupe). The moral of the story is: Don’t always go by the band condition predictions.

A partially frozen Hopewell Lake in French Creek State Park — Hopewell Lake in French Creek State Park

Now that I’m back home, I have some tweaks to make to my experimental antenna. Once I’m convinced it works and will be useful, I’ll do a separate post on it. That might take a while, though. I plan to wait for some warmer weather for the next round of tests.

72, Craig WB3GCK

CW – A Workout for Your Brain

For those of us who use it, the advantages of the CW mode are well known. It’s efficient and cuts through noise better than voice. CW is also well-suited for low-power (QRP) communications, enabling the use of modest equipment and power sources. Another important advantage is that learning and using Morse code is good for your brain.

It should come as no surprise that ham radio demographics skew heavily towards older adults. Folks over the age of 55 make up roughly 60% to 70% of the ham radio community.¹ It’s also widely known that cognitive decline often comes with age. I’ve always believed that Morse code is good exercise for your brain. In doing some research, I found that scientists have studied this, and there’s solid scientific evidence supporting my beliefs.

AI-generated cartoon image showing a human brain lifting weights in a gym.

Five Ways Your Brain Benefits From Morse Code

Mental Exercise There are several studies out there that show the benefits of learning and using a new skill, such as a new language or playing a musical instrument. With Morse code, you are essentially learning and using a new language, since you are translating sound patterns into letters and words. This type of activity strengthens memory and attention.²

Promotes Neuroplasticity. There are studies that show measurable changes in CW operators’ brains related to listening and motor control. Activities like this have been shown to promote neuroplasticity, or the ability to adapt and create new pathways in the brain.³ ⁴ I’m no neuro-scientist, but I’m told this is a good thing for your brain.

Improved Auditory Processing. Copying Morse code by ear is all about recognizing patterns, rhythms, and differences in pitch. This can sharpen auditory discrimination and focus. It seems to me that recognizing patterns, rhythms, and pitches is pretty similar to playing a musical instrument.

Focus and Mindfulness. Copying CW requires our complete attention and sustained concentration. This exercises your brain, not unlike playing a challenging game or solving a puzzle.

Social Interaction. When you use Morse code to communicate with others, it keeps you socially engaged, which is increasingly important as we age. Social engagement is not limited to just Morse code; hams communicate with each other using a variety of modes. Belonging to a radio club or participating in nets also provides social interaction. During my 50-plus years in ham radio, I have had the pleasure of developing countless friendships, both on the air and in person.

It’s Never Too Late to Start

When I was an 18-year-old sailor training to become a U.S. Navy radio operator, I soaked up Morse code like a sponge. Studies show there’s a good reason for that. Younger brains work faster, while processing speed and working memory can decline with age. That doesn’t mean we older folks should throw in the towel on learning new skills. Au contraire! Remember that neuroplasticity I mentioned earlier? Well, science shows that the ability to form new pathways and connections in the brain continues well into our twilight years.⁵ Contrary to the old adage, it seems you can teach an old dog new tricks.

While younger brains have their speed advantage, older adults approach learning armed with a lifetime of experiences. Because of these accumulated experiences, older folks are often better at problem solving and pattern recognition. Also, our retention and conceptual understanding are often better. We just might need more repetition and smaller chunks of information while learning something new.

Take Your Brain to the Gym

If you don’t already use CW, consider giving it a shot. It can be challenging, but it’s certainly worth the effort. Just be patient and stick with it. I think you’ll find it’s a fun way to communicate.

If you’re already a CW aficionado, grab that key and join me on the air for a workout!

73, Craig WB3GCK

DIT DIT

References:

Mann (N0SSC), S. (2021, April 23). There Is Youth in Ham Radio. On All Bands. https://www.onallbands.com/there-is-youth-in-ham-radio/ ↩︎
Wu, R., & Jessica, C.-L. (2023, June 23). To Stay Sharp as You Age, Learn New Skills. Scientific American. https://www.scientificamerican.com/article/to-stay-sharp-as-you-age-learn-new-skills/ ↩︎
Schlaffke L, Leemans A, Schweizer LM, Ocklenburg S, Schmidt-Wilcke T. Learning Morse Code Alters Microstructural Properties in the Inferior Longitudinal Fasciculus: A DTI Study. Front Hum Neurosci. 2017 Jul 26; 11:383. doi: 10.3389/fnhum.2017.00383. PMID: 28798672; PMCID: PMC5526915. https://pubmed.ncbi.nlm.nih.gov/28798672/ ↩︎
Schmidt-Wilcke T, Rosengarth K, Luerding R, Bogdahn U, Greenlee MW. Distinct patterns of functional and structural neuroplasticity associated with learning Morse code. Neuroimage. 2010 Jul 1;51(3):1234-41. doi: 10.1016/j.neuroimage.2010.03.042. Epub 2010 Mar 24. PMID: 20346399. https://pubmed.ncbi.nlm.nih.gov/20346399/ ↩︎
Greenwood & Parasuraman (2010). Neuronal and cognitive plasticity: A neurocognitive framework for cognitive training in older adults. Restorative Neurology and Neuroscience. https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2010.00150/full ↩︎