i have two hr2510's that have mosfet final conversions done on them. they work as good if not better that when i bought these radios new years ago.everybody says it sounds like i am sitting in the room with them. i waited for years for someone to come up with fix for the mrf477 replacement. i tried one of the other so-called replacements and the radio was not half the radio it should have been.the biggest improvement in my opinion is the lack of heat generated by mosfet when in tx mode. the heatsink temp only went to 118f with a keydown time of 15 minutes at 20 watts into a 50 ohm dummy load. the onlt thing that does not work on the radio is the tx power meter reading. most everybody uses a external meter so i don't see this as a problem.

john

Could you possibly post a link to the information? TIA.

Hi can you post pictures of the modification? Im working on it by my own but cant fet more than 7w pep using the irf520. Thanks 73