Since power companies usually use the Radar Engineers equipment, which tunes
about 310-330 MHz AM (don't know for sure, I'd have to look again), who is
playing with the 315 MHz AM receivers than can be had on ebay for a few tens
of cents? Sensitivity is more than adequate, usually in the -110dB range
and since they are broadband, I've seen many around 50-100 KHz, putting an
amplified computer speaker on it the audio bandwidth would be limited by the
speaker, your ears or a capacitor added to the output, you'd have something
comparable to the RE unit for about a buck. Add a fancy Yagi made of scrap
and you're in the 5-10 dollar range. That's a lot better than the $5K or so
for their fancy AM radio. An idea if someone is looking for a project.
Kurt
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