Re: ?- How high SWR before smoke?

Ralph Mowery

I understand full well about how to isolate the irf510s electrically.  However has anyone given any thought as to what may happen, if anything, to the RF coupling if the transistors are mounted on the same heat sink ? 

On Fri, Jul 6, 2018 at 10:24 AM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:
Google "TO-220 insulator kit".  You can steal them from old equipment such as a computer power supply.
With two of those and some heat transfer grease, you can mount the IRF510's to one grounded heatsink.
The RD16HHF1's don't need the insulator kit, since the tab is the source pin, and gets grounded anyway.
But the insulator kits work well with the IRF510's.

t/ BITX Web Site of Mike ZL1AXG Wiki

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