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Welcome to The Radio Society of Harrow, G3EFX


Foundation & Intermediate
Licence Training Courses

In the UK there are three levels of Amateur Radio licence – Foundation, Intermediate and Full. The Radio Society of Harrow runs Foundation and Intermediate training courses. Over 200 people have taken our training courses and become Foundation licensees or progressed to Intermediate level with us. All students receive a year's free membership of the Society when booking on a course.

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GB3HR, The Harrow 433 MHz (70 cms) FM Repeater

A new UHF Base Station has recently been installed and is running 9 Watts erp from our site near Harrow Weald. The new transceiver consists of a Kenwood TKR 851 running 12 Watts RF output on 433.350 MHz and receiving on 434.950 MHz. The station will relay FM transmissions when a continuous sub-audible tone (CTCSS) of 82.5 Hz is sent. The station identifies as GB3HR D in Morse Code, the D denoting the sub-audible code 82.5 Hz. The station has also had a new 6dbD gain collinear antenna installed and this has greatly improved coverage throughout Watford, Harrow and surrounding areas.

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Club Events

  • Upcoming Events
    1. 5G – What’s it all about? Chris G4AUF

      July 5 @ 8:00 pm - 10:00 pm
    2. Scanning the Skies – Colin G1IGA

      July 19 @ 8:00 pm - 10:00 pm
    3. No open shack today

      July 21 @ 9:00 am - 5:00 pm
  • Latest News:

    Membership fees

    Full membership £20 (£18); Concessionary: £12 (£11);
    Family £30 (£26); Junior £6; Supporter £5.

    We like Direct Debit payments - price shown in brackets.