Hi all. Newbie here. I was wondering if anyone knows of a project kit where I can make a super small 512Hz transmitter. Any help would be greatly appreciated.
Thank you for your time. I've seen these. They are popular but too large to be practical in pool plumbing that frequently uses 1 to 1-1/2 inch return lines.This is a commercial one:
I'd guess it's a pulsed oscillator similar to a BT 87 "knocker" cable locator, but driving a coil fitted around the electronics?
They appear to be strictly pipe location, I don't see how they work in leak detection?
Thank you for the info. I'll be reading this later. It looks interesting. Not sure yet if this would apply to my circumstances but I appreciate your time.512Hz audio frequency, according per the link I posted. Presumably magnetic field coupling?
Vaguely similar to the GPO/BT cable locator gear - they exist in many revisions, this is the instruction sheet for one of the latest:
Thank you for your time. I've seen these. They are popular but too large to be practical in pool plumbing that frequently uses 1 to 1-1/2 inch return lines.
People often will attach a 512Hz transmitter near the hydrophone. This is how the location of leak in pipe is found. Having said this, there are hydrophones with built in transmitters too. Very expensive. I was just looking for an alternative.
This is a thread I'll keep my eye on. I know low frequency is used by cavers (spelunkers?) as it can penetrate rock but I also imagine that transmitting at an audio frequency will require great power to get any distance. Anyone know the frequency used by cavers?
And not Audio frequency as the OP asked - kHz -v- Hz.Not high power either using protocol :