Antenna for APC220 without right-angle connector

Discussion in 'Wireless & RF Design' started by CollieJim, Apr 19, 2019.

  1. CollieJim

    Thread Starter Active Member

    Nov 27, 2004
    I'm using an APC220 in my project to monitor my driveway gate. The antenna that came with it is good, but has a right-angle connector.

    That makes the box to put the transmitter in much larger than I would like to use. If I had a straight connection I could use a bit of conduit which is much less obtrusive.

    Can I use any 433MHz antenna, or is there a requirement for the antenna to be at right angles to the board?
  2. Yaakov

    Well-Known Member

    Jan 27, 2019
    There is no requirement the antenna use a 90° connector. The included antenna is for convenience, and the angle provides vertical polarization from the board.

    You can use any antenna (electrically) that is designed for the frequency and impedance requirements, and (legally) that meets FCC Part 15 regulations for the band you are operating in. If you are in some other country than the US, it must be type accepted for operation in your country.
  3. BR-549

    AAC Fanatic!

    Sep 22, 2013
    "Could use a bit of conduit"

    For what?

    Make sure rx and tx antenna lay in the same plane. i.e polarized.