|VK6RBN's 2 metre repeater is a converted
FM880 and detailed diagrams can be found here.
The circuits below are those that are specific to the Busselton site. VK6RBN is part of the VK6 WIA news link system and is linked for the news direct from Roleystone to Busselton on 146.300 MHz.
The FM1680 receiver uses a GasFet preamp to improve the receive performance which is mounted inside the FM1680.
Also the news link FM1680 is only turned on during the VK6WIA news times and will include a circuit of this ASAP.