VHF/UHF Diplexer, Public Safety LMR Combiner for ERRCS and DAS, 50–220 / 380–960 MHz, 50W /100W, 4.3-10 Connectors, IP67
BK-04E
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Many jurisdictions run fire on VHF and law enforcement on UHF or 700/800 MHz P25, so an in-building emergency responder system often has to carry both. The BK-04 diplexer combines FM+VHF signals from 50 to 220 MHz with UHF, TETRA and 700/800 MHz signals from 380 to 960 MHz onto a single cable and antenna network, so one ERRCS or DAS can serve every agency. FirstNet Band 14 and low-band cellular pass through the 380–960 MHz port as well. High port isolation keeps the two radio systems from interfering with each other, and the low-PIM, IP67 construction suits equipment rooms, rooftops and tunnels.
Please see the Product Change Notice effective October 09, 2026
- Combines FM & VHF (including 65-108 MHz, 136–174 MHz and the 220 MHz band) with UHF, TETRA and 700/800 MHz public safety on one feed
- Supports FirstNet Band 14 and 600–900 MHz LTE/5G
- 50 W (FM-VHF) / 100 W (UHF–960 MHz)
- High Isolation
- Low Insertion Loss
- Guaranteed Low PIM
- IP67 rated for outdoor, rooftop, tunnel, and indoor installations
- RoHS
Frequency Bands:
Port 1: 50-220 MHz
Port 2: 380-960 MHz
Power:
Port 1: 50 W avg., 3 kW peak
Port 2: 100 W avg., 3 kW peak
PIM: -153 dBc (-110 dBm) min. (Test with 2x +43 dBm tones @ ambient)
Return Loss: 17.7 dB typ., 16 dB min.
Isolation: 50 dB min.
40 dB min. @ 380-400 MHz
Insertion Loss: 0.8 dB max. 1.0 dB max. @ 380-400 MHz
Impedance: 50 W nom.
Environment: -35 to +65°C, IP67
Housing Finish: Light Gray Paint