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Gooday Brett,
I use an old Amateur Radio Transceiver power supply that can deliver up to 20A at 12v.
A lot of other people use an ATX Computer Power supply, a 400W version is about $60.00 but you need electrical knowledge to wire it up. (e.g cut off all the hard drive connectors and connect the 12V portions in parallel to get the required current needed). However I am not sure how many watts are available on the 12V rail as the bulk of the 400W is in the 5V rail.
In your situation the best bet is go to Jaycar and buy one that can deliver at least 15A preferably more for insurance.
For your 6M run make sure you have thick gauge cables to minimise voltage drop across the cable. The thickness used for house wiring should be OK, they are rated at 20A before they heat up..
P.S. If you can find one with a backup battery would be good, so if you lose mains power the battery will keep you going long enough to do a shut down and park the scope etc. Nothing worse than doing a slew to a new target and then lose power, gears start crunching in the mount, especially on an EQ6.
Cheers
Bill
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