You will have an error if the synth board is inserted backwards, did you
follow the assembly instructions precisely?
Ensure that the Si5351A synthesiser module is inserted the correct
way round as shown in the photograph. The Low Pass Filter kit module should be plugged in
with the ¡°Out¡± legend aligned next to the RF Output connector of the main PCB (see photo).
page 15 of 22
Charles Brown
