VHF band pass helix filter for 144 MHz ( 2 meters ). Adjustable on request from 130 to 170MHz. Thanks to the triple helix filter and the mechanical notch it is possible to attenuate FM broadcasting up to 120dB with an insertion loss of less than 0.40dB. Perfect for EME, trope, DX, Satellite and contest use but also for civilian use, on voice, digital or APRS radio links.
HI-Q 3-cell 144MHz HELICA band pass filter
DESCRIPTION AND FIELD OF USE
VHF 144MHz band pass filter (2 meters). Tunable on request from 130 to 170 MHz for civil applications or for NOAA satellite frequency at 137MHz. Entirely made from solid aluminum with anticorodal 6060 alloy.
Allows perfect reception of the 2 meter band from 144 to 146MHz with a low insertion loss (typically 0.35dB)
Thanks to the mechanical notch it completely eliminates FM broadcasting from 88 to 108MHz with an attenuation of over 120 dB.
Perfect for :
- Eliminate intermodulation problems on radio systems operating in the 2 meter band
- EME, TROPO, CONTEST and SAT stations
- Amateur Radio Links
- Possibility of filter calibration also in the CIVIL AREA from 130 to 170MHzPRODUCT MATERIALS
Uniqueness
- Propellers made of 3mm silver plated copper
- Filter machined from solid aluminum using a 3-axis milling machine
- Lightweight and compact to be installed anywhere
FEATURES
Connectors :
- N female Amphenol®
- N female Amphenol®
Materials :
- 3mm silver plated copper springs
- 6060 anticorodal aluminum filter
- Stainless steel screws
-
Typical insertion loss : <0.40dB
Attenuation at 98MHz : 120dB
Maximum applicable power: 200W
power input
200W
