GB3BY Information

GB3BY is a 70cm FM repeater in Chorley, Lancashire. The NOV holder is Dave Austin M0DKR. 

It transmits on 430.9750MHz, and has a +7.6MHz split with a CTCSS access tone of 82.5Hz.

Please ensure your radio is set to FM narrow deviation 2.5KHz 

Link to GB3BY on


GB3BY is connected GB3FC Hub

Repeater Tones

Several tones are used by the repeater to indicate its operational states. 

When you transmit into the repeater and it's connected to another node, as you unkey, the gateway will reply with a morse K (dah-dit-dah) with a higher frequency of 1200Hz.

When you transmit into the repeater and it isn't connected to another node, as you unkey, the gateway will reply with a morse K (dah-dit-dah) with a lower frequency of 800Hz.

When a remote user on the network ends transmission you will hear a morse I ( dit-dit).

License details.

Callsign GB3BY
Transmitter Frequency 430.9750 MHz
Receiver Frequency 438.5750 MHz
CTCSS Frequency 82.5 Hz
Modes FM Narrow
Allstar Node Number 565452
EchoLink GB3BY-R Node 
Antenna Diamond X50
Antenna Height Above Ground 8m
Maximum Transmitter Power PEP 10.8 dBW, 12W
NOV Holder M0DKR

Radio Settings.

To use a repeater you need to listen to its transmitter frequency and transmit on its receive frequency. This can be confusing so these are the settings you need for your radio.

Transmit on 438.5750MHz, receive on 430.9750MHz and select a CTCSS tone of 82.5Hz.

On many radios, you select the receive frequency of 430.9750MHz and an offset of plus 7.6MHz with a tone of 82.5Hz. You can use tone squelch if your radio has this function as the repeater transmits a CTCSS tone of 82.5Hz. 
GB3BY can be linked to using Allstar node number 565452 and EchoLink GB3BY-R node 


Coverage Prediction. 

GB3BY Coverage Prediction