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Welcome to The Radio Society of Harrow, G3EFX


Foundation & Intermediate
Licence Training Courses

The Society runs Foundation and Intermediate training courses, these are shown in the Events section of the website (click here) - usually on consecutive Sundays at the 1st Stanmore Scouts Group HQ in Marsh Lane, Stanmore (click here)

At Foundation level, the course fee is £25 plus £27.50 for the exam. The Intermediate course is £30.00 + £32.50 exam fee. We also offer a Fast Track unlicensed to Intermediate course, £40.00 + £60 exam fee.

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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. DF/Foxhunt: Hints & Tips – Brian G3YKB

      June 2 @ 8:00 pm - 10:00 pm
    2. Introduction to Low Power, Wide Area Wireless Networks, Sigfox and LoRa

      June 16 @ 8:00 pm - 10:00 pm
    3. Direction Finding 144 MHz Foxhunt

      June 18 @ 2:00 pm - 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.