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Thanks Rick. I may put a very piece of Kapton on the non GND tracks only. (the white coated parts). The Kapton is incredibly thin. I can imagine people using small heatsinks having issues with thermal transfer from sink to PCB / components. The heatsinks they show in the images on ebay / ali...

Hello Rick. I really appreciate the info and images which make perfect sense and are totally clear. I do apologise for it taking up your time. These things always seem to take longer than we expect unfortunately. :( Your help has been amazing. I very much look forward to building my units. I...

Hello Rick sir, I hope you don't mind me asking but have you had time to take any more detailed images please ? I would be fascinated to see more detail of what you have accomplished. Best regards and 73 G4XRZ Joe

Hello Rick. Thank you again. Excellent information again. I am so glad I found this forum and your good self. It is also really nice to make your acquaintance sir. What a super hobby we have. I will look closely at those LPF units. I agree on price. I looked at building my own and the price...

Hello Rick and thank you ever so much for the detailed reply. I see now, on looking more closely, that as you say the large PCB material piece is cut away so that the minipa board can be inserted in the cut-out. Very neat and a great way of all round ground plane access. Is the 'pcb' from the...

Hello Rick and thanks for the great info. Can I please ask that you explain more about your heatsink arrangements ? Is that FR4 board on top of an aluminium heatsink with the 9120 attached direct to aluminium via a cut-out ? - or some other arrangement. I would be very interested. Also, I have...