Demodulation boards set-up
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mixer:	Minicircuit TAK3H

R36=R37= 50

Low gains version (<10) use RF amp CLC426
RF Gain= 1.7 ->	R35=R30= 36
RF Gain= 4   ->	R34=R31= 150
RF Gain= 8   ->	R33=R32= 350

High gains version (>10) use RF amp CLC425
RF Gain= 10  ->	R35=R30= 450
RF Gain= 30  ->	R34=R31= 1450
RF Gain= 100 ->	R33=R32= 4950

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version fmod=6.25MHz:
phase shifter:	Minicircuit PSCQ-2-6.4

version fmod=12.5MHz:
phase shifter:	Minicircuit PSCQ-2-13

version fmod=18.75MHz:
phase shifter:	Minicircuit PSCQ-2-26