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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).

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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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Latest News:

A 100% year of examinations success

In 2015, the Radio Society of Harrow sat 37 students for Amateur Radio Examinations. 23 Foundation 14 Intermediate Congratulations to all 37  and wishing you all further success as you

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Meeting Location 2016

Meetings in January – March 2016 will take place at the Blackwell Hall, 90 Uxbridge Rd, Harrow HA3 6DQ. There is a small car park and substantial on street

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Club Net

All are welcome to join the Club net on Mondays at 20.15 (local time). Call on 145.500 (V40), then QSY to 145.350 MHz (V28) or nearest clear frequency.    

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Construction Contest 2015

Congratulations to Colin G1IGA, 2015 winner of the Radio Society of Harrow Construction Contest. Colin made a portable station in a plastic toolbox powered by a solar panel mounted in

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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.