I'm using one and have been very happy with it. I sourced mine from ThePartsPlace from k5nwa; here's their page:??price/shipping is reasonable.?
I run it usually with 2W output and it seems to me in transmit the total draw in on the order of ~800-900mA. I biased it using the "zero bias" method, but I can't remember if there was any difference between it and the IRF510.?
Good luck!
73
Al Holt
WD4AH