What are those brass pcb stand things called and where did you get them?

Hi Rex. The LPF board doesn't show which toroid goes left or right. You put the 15-turn toroid where I thought the 17-turn toroid should be, based on the power efficiency module schematic when looking at the capacitor locations and their values. Does it make any difference? I've been chasing why I have no RF out and found I have a cracked toroid, so I've got some T30-2 on order. 73.

Great job my friend.What a beautiful layout for the boards.

Opera com qrp cw tem que a propagação ajudar muito para fazer dx um ft73 de py7pq.

Very nice Rex, looking forward to freeing up some time this winter to do some Rock-Mite'n. Very Best 73, KU9L

Rex - thanks so much for what you do! I heard your interview on Ham Radio Workbench. It was great!

Rex. This may be slightly off topic, but I don't know how else to get ahold of you. I ordered the X-CHECKer Crystal kit on June 26, 2024. It has been nearly two months, and I haven't received it yet. I tried to contact you twice via the email given through Paypal, but that did not yield a response either. Not sure if those went directly to your spam filter or not. Can you get back to me?

When is your next buildathon Rex?

You have been busy! Thanks and looking forward to more kit building.

Which kit is it?

That’s very cool. I’m new, guess a lot, and it usually looks horrible

Cool little board, keep it up rex!

Spamalot

From NM, AE5VM in Santa Rita, nice video.

What else to work on during the Maine winters! Love it!

I home brew 2 of those probes, and an RF one that lights up made from a maker.

Like that board for the key.

Got it! Thank you for the quick reply! Now I understand. Great stuff Rex. What a great hobby! Looking forward to building it.

Rex, thanks for going through the function of each component of the circuit....great information and I finally understand how this works!! .....however, you skipped over the function of C1....it is the electrolytic across the key jack....wondering what that capacitor does.....could you please briefly explain what the function of that capacitor??? Thank you!! 73 Pete KD2OMV

Cool!

From Paul AE5VM here in Southern NM

Promo_SM 🏃

I just built the two you sent me last winter, and made a short video of building and using it for my 6, 8, & 11 year old grandchildren. They know Poppi builds radios but the concept will come home when we go up to Chicago in April so they can learn to send their name to me and each other. Then I can show them how I talk to my ham friends in various forms. ;-)

2 questions and a comment. No sound. Why not do some Sardine Can Kits? 1/4 or 1/8th wave maybe. I have the 35 Anniversary TT2 Can I buy the rest of the buildathon? Got to get back on the air again.

I set my iron to 800 deg F that way it will heat the soldier joint quickly. If you heat the soldier joint to slowly heat will travel to the component being attached

Hello, This is Mr. Gairson, I bought a Tuna Kit and look forward to January 28th 2024 Buildathon. Will I recieve a email inviting me to join in to live stream, I am not that computer savy.

These work really good if you incorporate a laser led. Frosted lens for target protects eyes from laser. Much greater distance.

So - you're using the blanks just because it would take too long to grind the 6574.570 up to 7030? But it could be done?

Does the xtal oscillator in it work below 1MHz? I'd like to have something that can test 100KHz xtals.

Question: What is the lower end of crystal frequencies that the oscillator will work with?

Thanks for the video! I have an old HF radio that the sidetone has stopped working. Im looking for a key that has a sidetone built-in so I can send CW and hear what im sending. Would this key work in this scenario?

Nice demo, sir!

Yeah, go Rex, go! :-)

Use a pilot point drill. It acts like a trepanning cutter and you will also geta nice round hole.

Thank sir

I am ready to Tuna Palooza if you have any stock? I am searching for a soldering iron suitable for a picnic table operation of kit building.

Hello my friend!!!!

These kits were a big winner with a group of Boy Scouts from Quakertown, PA who came to our Maine museum for three days of workshops. One of these workshops included making the Two Scouts Night Sender. The Scouts liked the opportunity of learning soldering with Rex Harper and making these modern versions of a technology dating back to the 1840s with Morse himself albeit without LED lights or 9V alkaline batteries that you snap, snap off. This is the kind of thing that more young people would be learning in their spare time because of its rewards if there were more adults to introduce them to the technology fortunately Rex's kits are out there to grab on to when the opportunity arises.

Can you include a link on where to purchase?

Camera did not capture your bends of battery connectors well. But your explanations helped a lot.

is AA1TJ still around? i am looking for his 'solidarityt' trx project using sputnik valves. his website is gone

Rex, I ordered one of these during the stream What do you recommend for a strip to isolate the battery from the rest of the radio?

Team replay for the win!

Great tutorial Rex. I still saved a handfull of Altoids that are in tote in storage unit.

It finally worked. The 9-12v jumper need to be installed for the tuning circuit to work. Otherwise it is stuck on one fixed frequency. My receiver's tuning range seems to be around 14.042 to 14.053 MHz. Thanks and 73, W2AYZ