Note
The RR8B-HP is an 8-port remote switch designed for coaxial lines in low to medium-power RF systems. Utilizing a star arrangement of 16 enclosed relays, the unit provides exceptional power handling and SWR performance compared to conventional switches.
A key feature of the RR8B-HP is its versatility; it can function as a standard one-of-eight antenna switch or simultaneously select multiple output ports, making it ideal for complex antenna phasing and stacking systems. The unit is housed in an RF-shielded, weatherproof enclosure that allows the unit to "breathe" to eliminate condensation while protecting connectors from moisture.
Provides excellent isolation (greater than 70dB at 30 MHz), and uses silver-PTFE UHF connectors and moisture-resistant, 20-ampere RF relays. Includes MOV surge protection on control lines.
Power Rating: kW ICAS / 5 kW CCS (all modes, under 2:1 SWR)
Control Voltage: 10-14 VDC @ 100 mA
Port-to-Port Isolation: >70 dB (below 30 MHz); 55 dB (below 60 MHz)
Insertion Loss: <0.1 dB (below 60 MHz)
Impedance: 50 ohms
Relay Operation: 12 VDC
Caution: Never switch antennas while transmitting. "Hot switching" will create a sustained arc that damages relay contacts. Allow at least 15 ms after switching before transmitting.
Note: DX Engineering recommends using DXE-CW9S shielded 9-conductor cable, which provides eight switch positions plus a common ground.
Control line length depends on the wire gauge used to ensure reliable operation (total loop resistance must be under 30 ohms).
24 AWG:** Up to 1,000 feet
22 AWG:** Up to 1,500 feet
20 AWG:** Up to 2,000 feet
