radio frequency

  1. M

    Is it possible to use a yagi antenna to receive and monopole to transmit in the same system?

    Hello, I am trying to create a pet tracker and was wondering if its possible to use a monopole antenna to send and receive signals to the handheld device from the pet collar, and then to track the location of the pet collar, use the yagi for directional finding. So the pet tracker would...
  2. S

    Hatfield radio frequencies

    Hi i was wondering if anyone on here knows the frequency that hatfield fire company and colmar fire company operate on. All the ones i found they dont operate on. I know station 12 is on fire ground 3 but i cant find the right frequency for it. The stations are located in montgomery county, PA...
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