The Ultra-Q, High Power VHF/UHF Bandpass Filter is a tunable filter capable of eliminating adjacent channel and out of band interfering signals with ultra-fine band adjustments and bandwidths as narrow as 12.5 kHz. This low noise and highly selective filter is field-programmable using a PC GUI and controllable through USB, LAN, or LCD. In the case of lost power, there is a failsafe bypass mode built into the system.

The BBUQ has applications in Defense, Land Mobile/Public Safety, SCADA, and commercial two-way radio systems. It solves Narrow Band FCC Mandate interference issues, P25, DMR, NXDN, and Tetra Standards.

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ABSOLUTE MAXIMUMS
Input Power +20 dBm
Input RF Power -5 dBm
MECHANICAL
I/O Connectors Type N Female
Size 2U 19" Rack Mount (19" x 11" x 3.5")
ELECTRICAL
Tuning Step Size 2.5 KHz (Ultra-Fine tunes in approx. 10 Hz Steps)
Input RF Power -5 dBm (Maximum usable: Unit will enter bypass mode if power exceeds -5 dBm at input)
Noise Figure @ Pin < -20 dBm 7 dB typical
Noise Figure @ Pin > -20 to -5 dBm 17 dB
RF Gain +0 to 10 dB
I/O VSWR 1.5:1 nominal
I/O Connectors Type N Female
Power Requirement 120 VAC (48V DC available on request)
FILTER DESCRIPTION
Narrowband Wideband
Selection Y Option 0 Option 1
Filter Channel Spacing 12.5 kHz 25.0 kHz
Min 3 dB Bandwith +/-3.75 kHz +/-7.5 kHz
Max 45 dB Stop Band +/-8.7 kHz +/-17.5 kHz
Max 65 dB Stop Band +/-12.5 kHz +/-25 kHz
Group Delay (1 dB BW) 20 uSec 10.0 uSec