Kerlink Cavity Filter 902-928 MHz – KLK02973

Particularly useful in case of colocalization with other transmitters (Cellular, …), cavity filter avoids desensitization of the gateway. The cavity filter selection is depending on the LoraWAN regional parameters used by the gateway and bands used by transmitter colocalized with the gateway.

Installation Recommendations:

Each time it is possible, cavity filters should be directly mounted (screwed) on the N connectors of the LoRa antenna as follows:

Avoid direct mounting on the gateway since the weight of the cavity filter may deform enclosure. Reduce cable length between gateway and cavity filter as much as possible (by default, cable length provided by Kerlink with antenna kit is 1 meter).

Earthing is ensured by antenna brackets earthing connection (Cable section: 25mm2 min)

To improve the durability of the RF connections against environmental aggression (moisture, pollution …), protect connectors of cavity filters with an insulating tape like the reference 130C from 3M.

• Frequency range 902-928 MHz
• Targeted countries USA/Canada/Mexico
• LoRaWAN Regional Parameters US902-928
• Colocalized disturbers LTE850 (B5)
• Insertion Loss (Max) 1.5 dB
• Band Ripple (Max) 0.7dB
• Return loss (Min) 20 dB
• Rejection (Min) 60dB @ 10~850 MHz / 45dB @ 850~894 MHz / 45dB @ 936~960 MHz / 60dB @ 960~3000 MHz
• Power handling >10W
• Connectors N Male / N Female
• Dimensions 80 x 150 x50 mm
• Weight (max) 1.5Kg
• IP Protection IP66
• Operating temperature range -40°C to +85°C