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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 - usually on Wednesday evenings at a venue near Harrow-on-the-Hill bus/train/underground stations or there is street parking nearby if travelling by car.

At Foundation level, the course fee is £25 plus £27.50 for the exam. Students will also need to have a copy of the RSGB book "Foundation Licence Now!" which is available on-line from the RSGB Shop (click here).


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.


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

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.