On Fri, Oct 2, 2020 at 06:41 AM, Rubens Kamimura wrote:
I think about putting the PA 10W (qrp-labs - Hans Summers) in place of the power stage of uBITX v4 (QRP 10W), I thought about this modification to suit jobs in digital modes. Taking advantage of that I'm putting the uBITX card in a new box.Hello Rubens,
Have you thought about just adding a large heatsink to the two output MOSFETs that are already in the uBITX? Many have done that or mounted to an aluminum box, or just added a fan to cool the devices. The one thing to be sure to do is to insulate the MOSFETS from the heatsink with thermal insulators for TO-220 case transistors.