Shack-LAN Bandpass Filter Unit

with removable filter modules

 

  • W3NQN type filters

 

  • Removable filter modules

 

  • 200W Power Rating

 

  • 2nd harmonic rejection of over 55db

 

  • SWR less than 1.2:1 across band

 

  • Very low insertion loss

 

  • Hand tuned for maximum performance

 

  • 3 control methods
    The standard Hamation Bandpass Filter Unit contains six bandpass filters, one each for 160M, 80M, 40M, 20M 15M and 10M. The optional Rx Unit contains filters for 160M and 80M for use with separate receive antennas. All filters use the popular N3NQN design and are rated for 200W operation.

   These filters are designed for low insertion loss and low SWR across an entire band with emphasis placed on maximum rejection of second harmonic energy.

 The filters can be selected via front panel knobs, remotely by applying +12 for each individual band to the rear panel control connector or via computer network with the optional Shack-LAN Ethernet based controller.

Download Manual here (PDF format)

Measured Band to Band Rejection

  1.8 MHz 3.5 MHz 7 MHz 14 MHz 21 MHz 28 MHz
1.8 MHz X 50db >60db >60db >60db >60db
3.5 MHz 55db X 52db >60db >60db >60db
7 MHz >60db 55db X 45db >60db >60db
14 MHz >60db >60db >60db X 40db 50db
21 MHz >60db >60db 56db 42db X 28db
28 MHz >60db 55db >60db >60db 45db X

 

Typical Filter Response