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Welcome to G3EFX – The Radio Society of Harrow


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. Staying Safe Online – Mike M0ITI

      March 3 @ 8:00 pm - 10:00 pm
    2. Annual General Meeting

      March 24 @ 8:00 pm - 10:00 pm
    3. The M0UJC Memorial Lecture: An Introduction to Designing Antennas by Computer

      April 7 @ 8:00 pm - 10:00 pm
  • Latest News:

    Club Net

    All are welcome to join the Club net on Mondays at 20.15 (local time). Call on 145.500 (V40)…Read More

    New Training Venue

    I am delighted to confirm to the club and prospective students the new venue that we have for training. This is at the 1st Stanmore Scouts in Marsh Lane, Stanmore.  

    Read More

    70th Year Celebrated

    On Friday 16th September we held a social event to mark the club’s 70th year with nostalgia spanning 70 years! Here are some photos featuring Russell G3JVM cutting the birthday

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    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.