Frequency HIGH VHF

What is it?

• 4-port filter/multicoupler subsystem.
• Filter tuning remotely controlled.
• Includes  4 tunable bandpass 4-pole filters, extremely-low-loss, 4-port impedance matching network with low pass filter for harmonics suppression.

What does it do?

• Enables 4 transceivers to operate simultaneously with each radio on its own antenna in the 108-174 MHz range, in any combination of transmit/receive modes.  
• Accepts serial remote control to 7,000 frequencies per filter for filter tuning.

What is it?

• A dual-path filter system that includes a tuneable bandpass filter for 108-152 MHZ and a fixed lowpass filter for 30-88 MHz.  .
• Filter tuning and path switching are remotely controlled.

What does it do?

• The 108-152 MHz tuneable bandpass filters add to the isolation between separate antennas to enable multiple collocated radios to operate simultaneously in the 108-152 MHz range.
• The 30-88 MHz fixed lowpass filter reduces interference above the 30-88 MHz range.

What is it?

• Dual 2-port filter/multicoupler subsystem.
• Filter tuning remotely controlled.
• Includes  4 tunable bandpass 4-pole filters, 2 extremely-low-loss, 2-port impedance matching networks each with a low pass filter for harmonics suppression.

What does it do?

• Combines two pairs of Tunable Filters, and connects each pair to one of two antenna ports. 
• Produce maximum isolation when two channels in the ATC comms band (118-137 MHz) and two channels in the Maritime band (156-163 MHz) need to operate simultaneously. 
• Alternately, two channels within the same band can be combined onto one antenna with moderate isolation when an adjacent channel separation (ACS) of at least 3 MHz is observed.

What is it?

• 20-port, dual antenna input, Receive-only switched Output Multicoupler (RSOM) over the 30-512 MHz range.  
• Includes LNA’s and two splitters with switching so that any receiver can connect to either of the two antennas.
• Filtering to reduce interference.

What does it do?

• Enables up to 20 receivers to connect to either of two antenna inputs.
• As part of RFPinc’s M3B RFD, enables use of the “backup” receive antennas when there is unpredicted interference on the main transceive antenna.
• As part of RFPinc’s M3B RFD, enables use of the receive antenna for guard while at the same time the same radio can continue transceiving on the main antenna on a different frequency.

What is it?

• A stand-alone, 108-174 MHz, 4-pole, 4 inch cavity, tuneable bandpass filter.
• High transmit power and receive
• Does not require an RFPinc impedance matching network. 
• Filter tuning remotely controlled.

What does it do?

• The 108-174 MHz tuneable bandpass filters add to the isolation between separate antennas to enable multiple collocated radios to operate simultaneously in the 108-174 MHz range.
• Filter tunes from 108-174 MHz to cover Navigation, ATC, Land Mobile and Maritime bands.