Features
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| • | ten (10) antenna port allows switching of independent antenna for HF band |
| • | heavy aluminium case thickness 4mm (158 mils), IP 66 provides high level weather protection and RF proof capabilities |
| • | SO239 UHF or N teflon™ / gold pin connectors used |
| • | 10kV surge strength, high power 16 Amp boxed relays made |
| • | stub compensated microstrip PCB architecture assures lowest SWR and insertion loss from 1.8 to 30 MHz |
| • | built-in surge protection |
| • | compatible with all 12V source driver band decoders |
| • | connects directly to Band Decoder |
| • | top cover screws protected against loss (very useful at tower) |
| • | easy wall or tower assembling thanks to special galvanized heavy double C-bolt, which allows using various diameter of the tower tube |
| • | uselected antenna ports are grounded |
| • | without power all antenna ports are grounded |
| • | special double fault protection |
| • | each device is individualy trimed and tuned for best performance |
Special double fault protection
Fig. 1 Example of one port connection
A special method of power relays connection is employed, excluding to switch both radio ports into the same antenna. Additional signal relays ensure maximum separation even with faulty control drive. Without this protection feature the isolation between radio ports would decrease to half. As an example, at output power of 1000W = 60dBm, with faulty control drive the other radio port would experience 25dBm = 0.3W instead of -10dBm = 0.0001W.
