It's very easy to get this coil turned around backwards. I installed it properly on my first QMX-MB, and then installed it backwards on the second unit I built. As Ludwig says, check where L401a and L401b are connected. There is only one hole in the v.4 circuit board, and not enough room to insert 2 wires. L401a has to be tacked to L401b.
gl de va3rr
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On Fri, Aug 16, 2024 at 11:07 AM, @Ludwig_DH8WN wrote:
Nurlan, these bands are related to BPF0 and 1, both using L401a (24 turns).
Please check the solders there, especially the solder to RX_IN (turn "0").