LPF 1.8-54 MHz 7-pole Low Pass Filter Assy. 1.5KW & SWR Protect

Description

Low pass filter (LPF) PCB assembly with built-in FWD/REF output power detector for amplifier protection and an ALC output. (Fully assembled; not a kit.)
A mature design and implementation with no known issues. Several have been sold.
For use with BLF188, MRFX1K …, ART1K6 …,
4x VRF2933, 4x SD2933,  etc., push-pull solid state amplifiers.
Photos 2 and 3 are the actual assembled and tested unit you will receive.
This PCB assembly consists of 6 selectable filters covering 1.8MHz to 54MHz.
Each filter is a 7-Pole Chebyshev filter, (W6PQL Revision 6 version).
Selection of one of the six LPFs is by grounding one of the five filter selection lines or leaving them all ungrounded for 160 meters.
The board requires 12V DC to switch the relays.
Required DC power is +12VDC nominal, 10 volt (minimum) to 16 volt maximum.
Designed and manufactured in the United States of America (USA).
PCB Size:
5-1/2 (W) x 7-5/16 (L) x 1-1/2 (H) inches
DC Voltage: 12V
Individual filters are
6 m, 10-15 m, 17-20 m, 30-40 m, 75-80 m, 160 m
Insertion Loss: less than 0.2db on all bands
Power Handling: 1.5KW (1500 watts)
Harmonic suppression: nominally 25dB or more for
2
nd
harmonic –nominally 50dB or more for 3
rd
harmonic; more than ample for push-pull amps
SO-239 connector for ease of connection.
Compare to W6PQL kit (not assembled) at 5 plus shipping; without FWD/REF output power detector, ALC, and SO-239 connectors, and W6PQL fully assembled version at 5 plus shipping; also
without FWD/REF output power detector, ALC, and SO-239 connectors
.