JUMA TRX2 RF Filter board toroidal coils
 
L32 and L33


250nH, Core Amidon T25-2 (red)
9 turns 0.4 mm enamel copper wire

 L30 and L31


500nH, Core Amidon T25-2 (red)
12 turns 0.4 mm enamel copper wire

 L28 and L29


1uH, Core Amidon T25-2 (red)
17 turns 0.4 mm enamel copper wire

 
 

Additional instruction
(This is a principle picture, see the
turns and the other specification above)


1. Wind the coil (see the details above)
2. Presolder the wires with a hot iron
3. Fold the wires for surface soldering