On 30/08/2013 7:46 AM, Peter Watkins wrote:

Can anyone advise on how to activate the tone squelch on an Alinco DR-135?

<-- Hi Peter; Press the "TS" button until you see 'TSQ' appear in the display, with some value (representing the TSQ tone), then use the larger VFO knob on the right to select the required tone frequency. HTH.... Ramesh.