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GB3CK located near Charing, Kent TX frequency: 433.000 – RX frequency: 434.600 CTCSS: 103.5 Hz Manager: John Wellard M0ZAA
The Central Kent repeater is located near Charing on a site 192 metres asl and covers many parts of Kent. Parts of East Sussex and Southern Essex are covered as well.
The repeater was first commissioned in 1978 A Pye 460 went into service in 1983.
It was replaced with a Motorola Micro in September 1990. This was replaced with the current repeater which consists of a Icom 4520 on the 30 December 2001.
The repeater consists of a Icom 4520 UHF repeater (kindly donated by Icom UK) with a logic system designed by Colin G6OEY & Don G4TKR to take care of the callsign generation and access tone decoding. The aerial system is a Diamond X50 at 10 metres agl, fed by LDF 450 heliax.
Single aerial working is achieved by a commercial narrow shift diplexer made by Procomm of Denmark specially for GB3CK, also two other cavities and pre amp are used giving 75dB isolation.
A callsign is transmitted every 8 minutes whether the repeater is in use or not. Timeout is set for 8 minutes. CTCSS tone is 103.5. |