I bought a used Honda generator 3000is from a fellow at the flea market a while back. I payed $164 for it. It was all I had on me. It leaked gas a bit, so I knew it needed work. I got it home and got it started and noticed it was surging at idle speed. I put in some startron enzyme fluid in, and ran it for a bit and let it sit overnight. I always have some on hand, it is amazing! Started it the next day and it never surged again. I let it sit for a couple months and decided to check that gas leak out and make sure it would be safe to run. The tank was bone dry. So I took the tank off to see how bad it was. It was very bad! I bought a used one that looked a lot better than mine. I used some tank sealer called POR15. I never tried a sealer before. I LOVE that stuff. This video shows how I did the repair. I used a 200 watt soldering gun, and 60/40 solder with rosin flux. DO NOT use a flame to solder the tank if there is even a chance of fumes in it!!! I have zero affiliations with any products here. I will have a video on putting the generator back together soon. That sealer can save you in an emergency situation I bet. It saved me close to $200 for a tank, BUT, I REALLY saved way more because I fixed a generator that costs thousands. Gotta love a good flea market find! ... https://www.youtube.com/watch?v=X9psjlYvRnQ

I had some old glass that I used to make a solar air heater. The downspouts cost about $9 a piece so with tax about $40 for 4 tubes cut in half. The AC insulated vent tubing to run from house to the heater cost $27 for 25 feet. The rest of the wood I had on hand. I used 3/8" OSB and its ok but not for the baffle section...I should have used plywood..but it will be just fine like this. I cracked the glass when it was in the sun for a while and then I turned on the fan to test it. The cold air blast caused the crack. It should never happen again since the fan comes on while it is just starting to heat up now. I used an old 12 volt computer fan for air circulation. I added two cutoff tubes at top and bottom to add a bit more heat. The thermal images at the end show first, two pictures of temperature in open air with no glass on it yet. Next two are of first warm-up at 9:30 am with outside temp of 60 degrees. The first is out going from the house, then the input to house from heater after fan started running. The next picture is at input from heater, about 10AM and 62 degrees outside. Then at 11am nd 64 outside temp. The last one is from about 12:30 and 67 degrees outside temp. It really blows some ice hot air, and a nice breeze too. It IS VERY worth making one of these !!! ... https://www.youtube.com/watch?v=QnpUnehCe_w

If you stop the video at about 28 seconds you can see the name on the plane as QATAR ! Crazy zoom on this. I am not sure why there is so much "smoke" coming out of this. I did notice a big storm the next day though...hmmmm ! ... https://www.youtube.com/watch?v=4nIAO1d9Ypo

This is an easy project to make a very useful tool. There is LOUD audio signals in the video in the last part. As you can see it works both to extract a signal, or inject a signal. This makes it easier than trying to hook wires inside a radio. Much safer too. Any metal box will do. I just made mine because I can. Use any connectors that make you happy! This does not seem to make any change in SWR into a dummy load, that I can see. The toroid was from my junk bin, I am guessing that any type will work well here. I tested this before I closed it up. I suggest you do the same to see if you may want more or less turns on the toroid. I would NEVER transmit while you have a signal generator hooked into it. EVER! You could put a resistor divider network in here to drop the signal out to your scope even more if you wished to. ... https://www.youtube.com/watch?v=EjzhldiiNqE