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 < -0.45 dB (triplexer < -0.15dB, BPFs:  20M < -0.3dB, 15M < -0.3dB, 10M < -0.35dB )
  • 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 for a better total SWR of the set.

200WSet

Below is the band isolation graph showing all three bands.

Triplexer_BPFs

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

To be continued….