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    Captain abcd567's Avatar
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    3 EASY ANTENNAS FOR BEGINNERS

    3 EASY ANTTENNAS FOR BEGINNERS

    The main disadvantages of stock antenna supplied with DVB-T USB Dongle are:

    (1) It has a very short lead. Due to this, in most cases the antenna cannot be placed at an optimum location.
    (2) The stock antenna is not optimized for 1090 Mhz.


    SOLUTION FOR PROBLEM (1):
    The short cable length can be overcome by connecting a MCX to F pigtail to the DVB-T USB Dongle, and connecting to the pigtail, the required length of commonly available RG6 cable with a DIY antenna at other end of RG6 cable.


    Tip:
    (1) For RG6 coax lengths in excess of 5m/15ft, coax attenuation will be high, and an amplifier may become necessary.
    (2) Even with short lengths of Coax, use of amplifier increases plane count & range.


    SOLUTION FOR PROBLEM (2):

    The non optimized antenna can be replaced by a DIY antenna which has a ¼ wavelength vertical whip connected to core of coax cable, and a ground plane connected to shield of coax. The ground plane can be formed by a disc, a number of horizontal radials, a number of slanting radials, or a food/drink can.

    Below are 3 different easy antennas for beginners, Spider, Platenna & Cantenna. These all have a ¼ wavelength vertical whip connected to core of Coax cable, but use different methods of providing ground plane connected to shield of coax
    Last edited by abcd567; 2015-12-02 at 04:10.

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