Filters
HPF - 1
BPF - 33
HPF - 1
The HPF-1 is a Receive Only high pass filter designed to reduce the RF signal levels below 3.5 MHz. The HPF-1 is highly effective in reducing or eliminating interference caused from nearby AM broadcast transmitters. The HPF-1 will strongly attenuate signals below the 80 meter amateur band. Available with SMA or BNC connectors. Please specify when ordering.
Impedance: 50 Ohms
Attenuation Range: DC – 3.5 MHz
Insertion Loss: 1.5dB
Case: Diecast Aluminum Alloy
Connectors: SMA or BNC
Price: $35
HPF - 2
BPF - 33
HPF - 1
The HPF-2 is a Receive Only high pass filter designed to reduce the RF signal levels below 1.8 MHz. The HPF-2 is highly effective in reducing or eliminating interference caused from nearby AM broadcast transmitters. The HPF-2 will strongly attenuate signals below the 160 meter amateur band. Available with SMA or BNC connectors. Please specify when ordering.
Impedance: 50 Ohms
Attenuation Range: DC – 1.8 MHz
Insertion Loss: 1.5dB
Case: Diecast Aluminum Alloy
Connectors: SMA or BNC
Price: $35
BPF - 33
BPF - 33
BPF - 33
The BPF-33 is a bandpass filter specifically for the 33cm band and Meshtastic service. The BPF-33 incorporates High-Q ceramic resonators that enables sharp rejection near the pass band. The BPF-33
maintains typical VSWR over the passband frequency range making the BPF-33 easier to integrate into receiver and transmitter RF chains with less concerns for in band
frequency ripple.
Impedance: 50 Ohms
Maximum Power: 10W
Bandpass: 902MHz – 928MHz
Minimum Insertion Loss: 1.05dB
Connectors: SMA, BNC or N (N add $10)
Price: $80
TRANSCEIVER FILTERS
HPF-3
HPF-3
HPF-3
The HPF-3 is a high pass filter designed to reduce the RF signal levels below 3.5 MHz. The HPF-3 is effective in reducing or eliminating interference caused from nearby AM broadcast transmitters. The HPF-3 will strongly attenuate signals below the 80 meter amateur band.
Impedance: 50 Ohms
Maximum Power: 250W
Attenuation Range: .1 – 3.5MHz
Insertion Loss: .25dB
SWR: 1.1 – 1.2
Case: Diecast Aluminum Alloy
Connectors: SO-239
Price: $75
HPF-4
HPF-3
HPF-3
The HPF-4 is a high pass filter designed to reduce the RF signal levels below 1.8 MHz. The HPF-4 is effective in reducing or eliminating interference caused from nearby AM broadcast transmitters. The HPF-4 will strongly attenuate signals below the 160 meter amateur band.
Impedance: 50 Ohms
Maximum Power: 250W
Attenuation Range: .1 – 1.8 MHz
Insertion Loss: .25dB
SWR: 1.1 – 1.2
Case: Diecast Aluminum Alloy
Connectors: SO-239
Price: $75
RF CHOKES
1:1 Common Mode Choke
The CMC-1 is a receive only 1:1 common mode choke specifically designed for SDR's and any HF receiver. It dramatically suppresses noise and reduces the noise floor between 1Hz to 5MHz but is effective up to 30MHz.
Noise Suppression Range: 1HZ - 30MHz
Impedance: 50 Ohms
Insertion Loss: .4dB
I/O Ratio: 1:1
Case: Flame Retardant ABS Plastic
Two Models are Available:
CMC-1B : BNC Connectors $27
CMC-1S: SMA Connectors $27