Spent a few days building a new vhf setup for my aerotec.
I managed to fry my old vhf by accidentally connecting it to reverse polarity. Not my cleverest moment! So I bit the bullet and bought a standard horizon 1600e explorer.
Built a sealed ply box with some leftover aluminium fascia board on the side of the box to dissapate heat a little. This is screwed down onto rubber draught exluder.
Inside the box is a 7ah gel battery and a 12v to 5v step down box. This powers the globalsat gps mouse you can see mounted on the top. it also gives an extra 5v output to a Usb charger point on tne side of the box. there's also a waterproof cigarette lighter socket on the side of the box for charging the battery and running any external 12v items. Planning on mounting it behind and level with the thwart using some leftover wallplate straps from work. The only gripe so far is the step down transformer - it introduces a little radio click which i will try to suppress with some capacitors and suppressors.
1600e - brilliant, £118 and allows you to programme waypoints.
br355 globalsat mouse - £20. picks up satellites within seconds, even indoors
step down transformer £5
switches and sockets £10
case - FOC, building site leftovers