They used to make pagers with a relay in them. Are pagers still a thing?
On 9/29/2019 11:08 AM, Chuck McCown wrote:
I built a remote control to turn on the air flow from a 175 PSI 375
CFM compressor so that I don’t have to have someone manning a
compressor when blowing sponges through miles of duct.
Using Baofeng and Retevis VHF murs frequencies with DTMF control.
Not terribly happy with the range. It is only reliable for 2-3 miles
at most.
Going to get some 5/8ths wave mag mount for the vehicle but not sure
that is going to help all that much.
Could try UHF but I doubt it will be much better.
Anyone know of a radio switch type of thing that works will cell phones?
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