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Hello,
Should I get the?Two Tinned Tunas (EZ Build) and the?Tuna Tin 2 40th Anniversary Issue?

Other than the obvious that one kit includes a tuna can where as the other does not.? Are the designs the same?

Anyways, I was thinking of getting another Two Tinned Tunas.? My kits I built years ago got damaged or parts lost in my last move.? ?Going forward, I will put my kits into an enclosure.? At a minimum, keep it in a cheap plastic food container.? But preferably in a metal enclosures.? I found aluminum enclosures on Jameco for $9 that worked for me.

I also came across a Kindle book called?Oscilloscope Applications for the QRP Enthusiast?and they use one of the original Tune Tin transmitter in the book.? I was thinking I could use the kit from QRPme.? Of course, the kit from QRPme was designed to meet today's FCC requirements where the harmonics must be 43dB down compared to 30dB prior to 2003.

I was thinking of getting another Sudden Receiver for the same reasons where parts got damaged or lost.? I was wanting to build a Direct Conversion Receiver thinking I never built one of these types of radios.? Then I re-read the Sudden Receiver kit is based on the?G3RJV Sudden Kit.? Searching online more about this old kit, I discovered it is a Direct Conversion Receiver.

Lately, I have been trying to learn more about radio electronics and its theory and math.? These QRP radios are a good way to learn these things.? You blow a transistor - no problem - replace it with another cheap transistor.

Anyways, a big thanks to Rex and others for creating these kits.

73 Daniel KK4MRN

I think there was a private email from someone to me about this awhile back.? Shame the message did not go to this group.

Anyways.? I think these 2 kits are simple to build for new hams, cheap, simple to understand how it works, and it's low power output is less likely to shock you to death.? Serious on that last part.? ?But these 2 kits are great for education on electronics and how to use test tools.

In this video, you will see mention of using the TinySA Spectrum Analyzer to see the harmonics of various QRP radios including the Norcal Two Tinned Tuna.? The TTT met transmitter emission requirements before January 2003 but does not meet it to today.??
However, I am interested in testing it for the QRPme.com's Two Tinned Tunas EZBuild kit which would meet today's requirements - but I just want to see it for myself from an academic point of view.


I say it gain, Rex Harper, think you providing these easy to build kits. And others that inspired or helped Rex.

73 Daniel KK4MRN

Hello David.

Thanks!

I am going to post info but I am no expert and could be wrong.? But I do hope to get constructive criticism.

I wonder if WE in this group can come up with an course on some of the kits at QRPme.? Rex's kits are easy to build.? I know, I built multiple kits.

There is the Elmer 101 course for the SW20+ rigs from Dave Benson.? Midway Electronics got permission from Dave Benson to sell these kits. You can buy directly or on ebay.

There is the Electronics of Radio book and the Norcal 40A.? And the QRPTech group has boards and schematics and BOM to build the 25th anniversary edition.??

So, I would like to start up something with the Two Tinned Tunas EZBuild kit and other kits like the Sudden Receiver which is a Direct Conversion receiver.? Not only help those who have issues building, hooking it up, and operating the rig along with a receiver.? But help with issues they have.? And also write notes, take photos, and create videos of the rig.? Use various test tools like oscilloscopes, signal generators, spectrum analyzer like a TinySA to demonstrate various topics including RF amp, oscillator, mixing, audio amp, filters, etc.? ?Make it where a high school student along with adult supervision could build the TTT EZBuild and understand How It Works - that is my goal.?

Well, along the journey of providing this material, i would learn a lot myself.? it is no secret that I want to learn all this stuff so I can design my own radios and home brew them.? But I have to pay my dues - build and home brew and experiment a lot - measure, test, read a lot, do the math, learn radio theory.? ?I want to show others what they can do to learn how to do this stuff too - not only build the radios - but understand how they work - how they can fix issues but also make modifications/enhancements to the radio.? And for others to learn how to design and build their own radios too.? But I cannot do it on my own - this is where all the elmers are needed - their experience and constructive criticism.? ?And kits from QRPme will be a huge help because they are so easy to build - thanks Rex!

Anybody want to participate?? Learn? Build along?? Or Elmer others with your hard-earned knowledge and experience?
Suggestions, comments?

I hope others jump into this topic and participate.? I want this to happen.? ?To me - this is where the real ham radio hobby is.

73 Daniel KK4MRN