WA Radio Scanner Users' Group

There's a good list of FESA frequencies here
http://vk6hgr.echidna.id.au/warsug/freq ... /FESA.html

You might pick up traffic from Mundaring (CALM) and Wooroloo repeaters too, but Red Hill should be no problem from Midland.

edit: You should be able to pick up 6IP on channels 24 and 25 also.