Low Power BPFs: 10 – 15 – 20

General Specification:

  • Total Triplexer with BPFs band Isolation is better than -70dB.
  • Isolation between 10 and 20 meter band > -100 dB.
  • Total Insertion Loss < -0.55 dB (triplexer < -0.15dB, BPFs:  20M < -0.3dB, 15M < -0.4dB, 10M < -0.3dB )
  • Return Loss > 25dB

Recommended BPF Power with antenna VSWR < 1.5:

  • 200W CW/SSB /RTTY (ICAS)
  • 100W  100% Duty Cycle

Triplexer Enclosure is Hammond 1411RU :

  • 1411RU – 8″ x 6″ x 3″

BPF Enclosure is Hammond 1411MU :

  • 6″ x 3″ x 3″

Total weight is 2.2 kg  (5 lbs)

Photo below shows the set where BPFs connected to the Triplexer with UHF M-M adapters. Coax cables can be used as well if it is more convenient for installation.

  • I recommend a 3 feet coax cable between the Triplexer and BPFs.

200WSet

Below is the band isolation graph showing all three bands.

Please, see how much band isolation do you need on this SO2R webpage.

Triplexer_BPFs

To be continued….