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Thanks Dan! And I put one together... a bit more ghetto than I normally would make things, but it works great. I appreciate that.
Pete
KEØBRS
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Final Results:
Using my new RF Probe attached to my DMM and a 50 ohm dummy load on the antenna, I now read 1.540V (set on DC...
I was attempting to measure the output of a small FM "microphone transmitter" I made that works in the regular FM broadcast band (around 108MHz). I attached a 50Ω load to the antenna output, then using an analog meter measured the AC voltage.
The pictures are crappy -- I was holding the camera...
I came across this RF amplifier on an internet quest and suspect that it was just the thing I was after. The schematic shows up in various website, but doesn't have any author I could find.
However, as a newbie, I thought I'd squeeze all the big juicy brains here to see what they think of my...
The transmitter also puts out a strong signal on my scanner at 150.215MHz. My cheap (GOOIT, Chinese brand) frequency counter shows a strong signal at 100.145MHz. To be fair, this crystal was off eBay sent from HongKong and probably was never "to spec". But this might explain why the 3rd...
I am absolutely not sure why the strongest output it at this frequency. It also has a good signal at 150MHz--which makes perfect sense. But 166.9xx gave me an even clearer audio signal.
I'm just a simple radio hobby mechanic, so I couldn't figure this one out if I tried. :oops: But I...
This is my version of a "small" crystal-controlled voice transmitter. It uses 5-transistor array chip, otherwise, it could easily be made with individual components. It transmits at around 166.900MHz using a 50MHz crystal. The input audio jack (for the microphone) is simply attached with the...
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