Marcel, my comment was by no means meant as a criticism, it is almost impossible to marry any digital circuitry into a radio without some interaction. The oscillator in the micro is a square wave generator, and will spatter harmonics all through the SW spectrum. I am suprised how few birdies there are. It could be MUCH worse.......
I am perfectly happy to switch the Arduino section off when the rare occasion that a birdie will trash the signal I am receiving, a small compromise really.
On Wed, Nov 6, 2024, at 1:48 AM, Marcel, de PA8MA wrote:
Hi Pentagrid,
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I've noticed the burdies as well, which I don't like at all. I've tried to reduce them by sending only the necessarry data to the display and use some ferrite in the flatcable, but the Arduino itself procudes burdies. I think the only solution would be shielding of the PCB. I gonna try that as well.
I will let you know about my results.
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Kind regards,
Marcel
