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Oh yes, I do intend to keep it up.
I am in the middle of building a TV transmitter with HB tuning caps built on the PCB, but it is the modulator that is giving me a bit of a problem. BR H Hi all, I have had a bit of a busy half-year, with sickness in the family and the like. But I have managed to add a few new projects that could be of interest to my homepages on http://web.telia.com/~u85920178 Have you ever wondered how these old IF-cans can be re-used? I have two different articles dedicated to them: http://web.telia.com/~u85920178/begin/cans-0.htm (reusing IF cans) http://web.telia.com/~u85920178/rx/tda7k-rx2.htm (TDA7000 for NBFM) http://web.telia.com/~u85920178/bloc...mr_tube_00.htm (Making your own) Last month someone asked me how I choose values for components, but "Can you add calculations". Ok, I did it, with a few over-simplifications, and for a crude project: http://web.telia.com/~u85920178/begin/bug_calc.htm (FM Wireless Microphone) http://web.telia.com/~u85920178/begin/calc-00.htm (Includes loads of useful calculators) Earlier int he year I needed to throw together s quick VHF antenna for 446MHz, 432MHz, and again for 145MHz. When I had to do it for 105MHz I created this project: http://web.telia.com/~u85920178/antennas/vpole0.htm (15-minute +2.5dBd antenna) Where did those multi-gang tuning capacitors go? I needed one, so I etched it on a PCB, cheap: http://web.telia.com/~u85920178/use/tuning_caps.htm (multi-gang - for HF/VHF) http://web.telia.com/~u85920178/use/tuning_caps2.htm (PCB Preset capacitor) Hejsan, "Lethall Harry!" :-) Excellent new pages on your website. The two on homemade tuning capacitors is very good. Keep it up, please, should be of help to many hobbyists, not just licensed radio amateurs. |
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