Bandpass SAW Filter 868 Mhz for Helium LoRa Lorawan SigFox

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This filter for the 868 MHz bandpass allows to improve the selectivity of the reception and to suppress the parasitic signals outside the 868MHz band and in particular to reject the GSM 900 MHz band.

In emission this filter allows to suppress harmonic frequencies, with a maximum power of +18dBm.

Insertion loss: 2.8dB
RF IN connector : SMA female (to the antenna)
RF OUT connector: SMA female (to transmitter/receiver)

Type of use unlicensed frequency 868MHz: Sigfox, LoRa / LoRaWAN, Hotspot Helium and any radio application on the ISM 868 band.

Delivered with: 1 SAW F1OPA bandpass filter 868 MHz.

Option: Tuned HNT antenna 868 MHz 4.4dBi

3D printing compatible case by bubux on : https://www.thingiverse.com/thing:5235270

More details

Download

Data sheet SAW 868 MHz

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Data sheet

Central frequency: 869 MHz
Frequency coverage: 868 to 870 Mhz
Bandwidth: 2 Mhz
Insertion loss: 2.8dB
Max. input RF power 18 dBm (63 mW max.)
Attenuation at 862 Mhz : -48dB
Maximum power supply : 6 volts
Connector : SMA female
Impedance : 50 Ohms
Dimensions : 40 x 30 mm

Use with Helium hotspot

Depending on the cables used for the antenna and the hotspot, adapters may be needed to connect it.

RF cables and adapters for Helium are available here: https://www.passion-radio.com/hnt-connectors/197

The connector on the 868MHz filter is female SMA and should not be confused with the RP-SMA (reverse SMA) connector used on some helium hotspots. RP-SMA and SMA are not compatible.

The filter should ideally be placed as close as possible to the antenna and is not designed for outdoor use, in this case it should be protected in a waterproof case for outdoor use.

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