DC1RN Triplexer



All Cap values in picofarad, Coil dimensions as below:

All dimensions in millimeters
Coil No.	Outer Diameter	Wire Diameter	Turns
1	5	0.8	3
2	5.6	0.8	5
3	5.6	0.8	7
4	4.6	0.5	7
5	8.5	1.6	9
6	8.5	1.6	12

Passband attenuation SW: 0.1dB, frequency range 0-52 / 60 - 80 MHz (@ 3dB).
It turned out to have a notch characteristic at 56MHz from interaction with the other branches, I didn't investigate this any further.

Passband attenuation 2m: 0.5dB, frequency range 105 - 240 MHz (@ 3dB).

Passband attenuation 70cm: 0.25dB, frequency range 290 - 850 MHz (@ 3dB).

Crossband attenuation:
SW (-63dB) --- 2m (-42dB)
SW (-66dB) --- 70 (-25dB)
2m (-50dB) --- 70 (-27dB)

Read: SW Signals are attenuated by 42dB on the 2m branch, 2m signals are attenuated by 63dB on the SW branch and so on.