Tag Archives: Keys

Hamcation Treasure: Mike discovers and restores a mystery key!

Many thanks to Mike (VE3MKX) who writes:

Hi Everyone,

While at Hamcation (a great event) this year, I picked up this little Gem. It was found at one of the club tables located inside the Swaps building. When I saw it, I said, ‘wow…way cool!’

It didn’t have any markings on it and the seller said he thinks it was home made.

The hamfest bartering fun then began. He wanted $40 for it and me, being the cheaper than usual Ham, I said
‘How much do you want for this $30 dirty old key ‘ ?? He laughed but did not budge on the price.

Being from the North I calculated the price with the 35% currency exchange rate.

So I started to hem and haw….it was one of those…. Do I buy it or not. I’d kick myself after if I didn’t !!

I bought it and I’m glad I did !

After my southern vacation, I placed it on the bench for the restoration that was about to begin.

 

I took apart the key taking various pictures along the way so I wouldn’t have anything placed in the wrong spot or left over. Even something as simple as fastener lengths could make a difference placed in different spots.

I got out the Brasso cleaner, fibre cloth, Q tips, and rubber gloves. In hindsight, it might have worked better cleaning with a toothbrush. I’ll save that idea for next time!

Once the key was totally dismantled, I inspected all the parts. The black base was too far gone with scratches and chips to restore to my liking.

So I then took some 220 grit sandpaper and gave the base the once over. I went over to the local Walmart and picked up some flat black Rustoleum spray paint.

I was expecting a true flat dull black finish. What I finished with was like a flat egg shell black which to my surprise I like a lot better!

After each coat of paint (letting it dry for 24 hrs ) I then did a quick sanding with 220 grit water paper. So after three coats of paint it was done !

The key came with very small wooden finger paddles. I wasn’t a fan of those because of the size and shape. So I went into my junk drawer–sorry, my ‘ham radio treasure collection’–and found a pair of spare Begali finger paddles.

These finger paddles were acquired a few years back at Dayton, another fantastic don’t miss event ! With a little cutting I made these fit onto the cleaned brass arms of the new key.

The key was then reassembled. One thing that I did do while reassembling was to wear gloves, so I wouldn’t leave fingerprints all over the freshly restored key.

I also gave the swivel arms a few drops of WD40 which would prevent any sticking.

The reassembly went fine. The overall project took a few days to complete. I did place a small piece of cupboard lining rubber under the base of the key to prevent the key from moving on the desk when in use.

The key weighs about 5lbs, so it didn’t move much to begin with, but ya never know–!

Overall, the key has a very nice feel to it,

I still have some tweaking to do to get the paddle to my liking.
A was a fun little project.

If by chance you know anything about this key, please let me know !

Have a great day and see you at FDIM at Dayton !

72 Mike VE3MKX

New Year’s Day POTA: New VK3IL Pressure Paddle, New FT-817/818 Narrow Filter, and New TPA-817 Pack Frame!

I try to start each year by doing a POTA or SOTA activation on New Year’s Day.

POTA actually issues a certificate for completing an activation on New Year’s Day so there are typically loads of activators and hunters working the bands. It’s an ideal time to play radio.

This year, we had a number of family activities on New Year’s Day, but I made a little time to fit in an activation during the late afternoon at my most accessible spot on the Blue Ridge Parkway: the Southern Highland Folk Art Center.

As with my last activation, I suspected I would be operating in the dark, so I brought my LED lantern along for the ride.

Although not intentional, this New Year activation had a lot of new-to-me stuff involved!

New VK3IL Pressure Paddle

The prior evening–on New Year’s Eve–while my wife and daughters were watching a classic movie movie marathon, I used the time to heat up the soldering iron and work through a few kits and projects that had been sitting on my desk.

One of those projects was a Pressure Paddle designed by David (VK3IL).

Michael (G0POT) sent me the Pressure Paddle circuit board and heat shrink via Andy (G7UHN) several months prior. [Thank you so much, fellas!]

To my knowledge, the VK3IL Pressure Paddle isn’t available in complete kit package, but it’s quite easy to source everything yourself.

On his website, David provides the Gerber files you’ll need in order to purchase the circuit boards from your favorite manufacturer (I’m a huge fan of OshPark here in the States).

Next, you simply need to order the components. Here’s the list assuming you’re using DigiKey:

  • Quantity of 2: 732-7579-1-ND (CAP CER 10000PF 10V C0G/NP0 0805)
  • Quantity of 2: BSS806NH6327XTSA1CT-ND (MOSFET N-CH 20V 2.3A SOT23-3)
  • Quantity of 2: 311-470KCRCT-ND (RES 470K OHM 1% 1/8W 0805)
  • Quantity of 2: 1738-SEN0294-ND (RP-C18.3-ST THIN FILM PRESSURE S)
  • Quanity of 1: Three conductor wire with a (typically) 3.5mm plug (note that I had one of these in my junk drawer)

Keep in mind: the components are surface-mount. If you’re not used to working with SMD components (ahem…that would be me) I suggest buying a few spares of each in case you lose or damage one or more during the build.

It also helps to cover the finished board in heat shrink not only to protect the board and make it easier to grip, but most importantly (if you’re me) hide your electrically-sound yet unsightly surface mount soldering job.

The build might have taken me 20 minutes.

New FT-817ND Narrow CW Filter

Some time ago, I purchased a second FT-817ND with the idea of doing full-duplex satellite work. I later realized I could be taking the second FT-817ND out to the field more often if I simply had another narrow CW filter installed, so I built one.

This New Year’s Day activation was actually the first time I’d taken this particular FT-817ND and its new narrow filter out to the field!

New Armoloq TPA-817 Pack Frame

Earlier this year, I also decided that I wanted to outfit my 2nd Yaesu FT-817ND with an Armoloq TPA-817 pack frame. The idea was to experiment with building a rapid-deployment field kit around it.

This is actually one of the big projects I’m working on in 2023. I’ve yet to sort out the antenna mount I’d like to use with this frame based on how I plan to deploy it. Continue reading New Year’s Day POTA: New VK3IL Pressure Paddle, New FT-817/818 Narrow Filter, and New TPA-817 Pack Frame!

Scott builds a base for his ZN-Lite II paddles

Many thanks to Scott (KK4Z) who shares the following post from his blog KK4Z.com:


ZN-Lite II Update

by Scott (KK4Z)

I’ve had these paddles for about a year now but I haven’t used them much. Here is a link to my original review: https://kk4z.com/2021/11/24/n3zn-zn-lite-ii/. The reason is rather complex. they are small but because of their design, they can’t be held in the hand like some other paddles. If you put them on a table with the included Lexan base, they are so light, you have to use both hands to operate them. To me, it was a conundrum. These are very well-built, precision paddles and as smooth as any well-made paddle out there. My original thought was to use them for POTA. I was a little discouraged with their functionality, and even offered to sell them at one point — but I didn’t.

Here lately, I have been pairing my paddles with my various radios. My Begali Signature with my IC-7610, Begali Traveler Light with my IC-7300, Begali Adventure with my IC-705, and my N0SA SOTA paddle with my TX-500. I have a Penntek TR-45L on order. It is a CW-only radio that has a nice retro look. I thought these paddles would be a great match for this radio. What I want for this radio is a set of paddles that can be operated with one hand. The TR-45L is a tabletop radio https://www.wa3rnc.com/store/penntek-tr-45l-qrp-transceiver. I envision its use at a park during a POTA activation. I decided what my ZN-Lite II paddles needed was a heavier base. I ordered from Amazon a 3″ diameter, 1/2″ thick piece of steel.

I drilled a hole to mount the paddle and 4 smaller holes to mount the rubber feet. The paddle hole is countersunk on the bottom so the screw head is below (or above) the surface of the base. That way it can be used without the feet.

The holes for the feet were drilled and tapped for 8-32 thread. I had to drill the hole all the way through because I didn’t have a bottom tap. Without a bottom tap, there would not have been enough threads in the hole if I didn’t drill all the way through. When I do these projects, I basically use hand tools and in this case, I used a cheap drill press I bought from Home Depot.

Continue reading Scott builds a base for his ZN-Lite II paddles

N6ARA introduces the new TinyPaddle Jack!

A few week ago, my buddy Ara (N6ARA) sent me a prototype of his new ultra-portable CW key, the TinyPaddle Jack (TPJ).

You might recall, Ara introduced the original TinyPaddle late last year. His motivation for the original TinyPaddle was to have a super minimalist paddle that could be stored away as a spare in your kit for those times when you either forget or have an issue with your primary paddle in the field.

The TinyPaddle is a very capable little key!  Click here to read my field report using the original TinyPaddle.

Turns out, there was a lot of pent-up demand for a product like the TinyPaddle. At $15 for the kit or $20 fully assembled, the TinyPaddle is a serious bargain. Ara and his father have been quite busy producing these.

Enter the TinyPaddle Jack (TPJ)

Whereas the TinyPaddle is designed around being the most simple/minimalist backup paddle solution–basically a wee paddle with a male 3.5mm connector that plugs directly into a rig’s paddle jack–the TPJ takes it one step further.

The TPJ is essentially the TinyPaddle  with a female 3.5mm plug encased in a 3D-printed holder and protective cover.

The design is clever. The case that protects it while stored away in one’s field pack, pulls apart and is re-joined to make a very usable paddle holder.

There are actually quite a few purchase options, so Ara created this short video that describes the different components/options and how to use them:

Click here to view on YouTube.

I’ve been using the TPJ with my MTR-3B and new SW-3B. As I mentioned in my field report with the TinyPaddle, the action of this paddle is actually very precise–it almost feels like a capacitive touch paddle.

I find that the holder definitely adds to the ergonomics of the paddle (although it can actually be used without a holder, too).

Ara also created a small adjustment tool that will allow you to tweak the paddle spacing if needed. Keep in mind, this is a very simple paddle design (there are no springs or magnets) and isn’t really meant to be a primarily paddle. I do feel, however, that it will hold up quite well over time. The spacing of the contacts is so fine, I believe the stress on the paddle levers is minimal .

I plan to keep a pair with my new MTR-3B field kit (above) and use it as the primary paddle for that radio. I will plan to buy a second one for the SW-3B a well.

Highly recommend

The price of the fully assembled TinyPaddle Jack ($24) and Cable ($5) is $29 US.

This is firmly in the “no-brainer” category.

Just take my money!

I personally think Ara could charge $40+ for these and they’d still be a bargain. I know him well enough to know that his motivation is in the fun of designing these products and making them accessible to other field radio operators. Case in point: I’ve been pricing quality 3.5mm patch cables recently and I find his $5 cable to be an excellent price; even more competitive than cables I’ve seen on Amazon and eBay.

In addition, Ara even freely distributes the 3D printer files so you have the option to print your own paddle holder!

It’s obvious to me that these products are his contribution to the community that pays for itself enough so that he can continue to innovate. His designs are so clever, I can’t wait to see what he comes up with next!

Very well done, Ara!

Click here to check out all of Ara’s products at N6ARA.com.

Eric’s DIY Cootie: “Levon”

Many thanks to Eric (WD8RIF) who writes:

Well, if K8RAT is going to tout Hermione, I guess I need to tout Levon.

My cootie/sideswiper was inspired by an article (http://sideswipernet.org/articles/w9ok-modernization.php) by W9LA about how hams in the 1930s might have constructed a cootie/sideswiper using a ceramic DPST knife switch. I didn’t have a ceramic DPST knife switch, but I did have a nice Leviton ceramic DPDT knife switch which I used as the basis for my cootie/sideswiper. Instead of using tape for the fingerpieces as described in the article, I used Fender guitar picks.

This cootie is the key I use most often for home-based operations.

While operating in the field, I usually use an inexpensive and lightweight Whiterook MK-33 single-lever paddle as a cootie key.

Levon is a handsome sideswiper, Eric! Thanks for sharing his story and your photo!

Thanks to both of you, I feel inspired to make my own “cootie” this winter. Perhaps I’ll try to find some historic context/inspiration as well!

Any other homebrew sideswipers, straight keys, or paddles you’d like to share? Please contact me and we’ll feature your creations!

I’ve got a very special one that’ll be featured later this week. Stay tuned!

Alex builds a simple sideswiper

Many thanks to Alex (W3AVP) who shares this photos of his homemade cootie/sideswiper originally posted on the POTA Faxcebook page. Alex notes:

I didn’t want to lug my Begali key to the parks so I made my own using the plans from KA8VIT. Worked great! I had a little QRP key but my fat fingers would make so many mistakes. The DIY aspect of this hobby is extremely entertaining!

And I bet your “cootie” serves you well in the field! I love the simple design and the fact it even has an adjustable action. At the end of the day, keys are merely switches so are perfect for homebrewing!

If you have a sideswiper/cootie or any other key you’ve built and would like to share it here on QRPer, contact me (K4SWL at QRPer.com).

Thanks for sharing, Alex!

W1SFR’s New Portable Torsion Bar Key

TBP3qtrLftFront(Source: W1SFR)

New Portable Torsion Bar Key Announced by W1SFR
Jan 12, 2016—Sudbury, VT

Many of you know W1SFR from the End Fed random wire antennas that have become very popular with QRP ops around the world. The antenna design is not new and has handed down by many hams over many years, but Steve has managed to create quite a following due to his attention to construction and only using the best of materials…all at a very reasonable price.

Now he has applied that same attention to detail and high value to his new “TBP” (Torsion Bar Portable) key. Torsion bar keys use a unique combination of construction and design to provide the CW op with a different experience…one that users are saying very good things about. All of his keys feature a contact system that allows the key lever to make a “softer” contact allowing the very slightest movement when the contact post hits the stainless contact. That not only makes the key feel less “mechanical”, but also makes it much more quiet…a feature these keys are known for.

“ I make each key by hand and top them off with my trademark exotic wood finger pieces with a signature Mother-Of-Pearl dot on each finger piece…no CNC plastic here. The torsion system allows very close contact spacing and effortless CW. The TBP represents a much smaller version of my larger keys, designed to be at home in the field or in the shack.”

The new portable key follows W1SFR’s TBKII, a single lever key and the TBSK, a torsion bar straight key.

You can see all of the keys at W1SFR.com.

Note: Steve also tells me that he lowered his prices for the Christmas season and has decided to extend them for the month of January. Click here to check out his product line.