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Example Diplexer Graphs -
LH7S- 40 / 50 and LH7- 470 / 520

Graphs: LH7S 40/50 - Sub-band and TV band Combiner

High performance CATV diplexer features low passband loss, low ripple and high isolation.

LH7S-40/50-HI port

  Passband Skirt
Mkr Freq (MHz) Attn (dB) Attn (dB)
1 40.000 -64.007 -64.531
2 50.000 -1.355 -0.807

LH7S-40/50 Low stopband

  Passband Skirt
Mkr Freq (MHz) Attn (dB) Attn (dB)
1 40.000 -1.293 -1.051
2 50.000 -54.458 -55.257

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Graph: LH7-470/520 CATV General Purpose Diplexer

LH7-470/520 graph illustrates lowpass and highpass frequency responses.

  • Combine two bands: 0 to 470 MHz and 520 to 760 MHz, or
  • Divide 0 to 800 MHz RF-spectrum into low & high bands
  • Passband loss: < 1dB lowpass, < 1.5 dB highpass
  • Ripple: <1 dB
  • Mutual isolation >40 dB

Lowpass Port

Mkr Freq (MHz) Attn (dB)
1 470.000 (Fc1) -2.22
2 520.000 -47.56

Highpass Port

Mkr Freq (MHz) Attn (dB)
1 470.000 -41.26
2 520.000 (Fc2) -2.338