Four + Four Switch Features
- every one of two (2) independent antenna ports can be switched to one of four (4) radio ports on HF and 6m 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 60 MHz
- built-in surge protection
- compatible with all 12V source driver band decoders
- 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
- unselected radio ports are grounded
- without power all antenna ports are grounded, radio ports are opened
- special "FIRST ONE WIN" logic
- each device is individualy trimed and tuned for best performance
Specifications
Characteristic impedance: 50 ohm
Operating frequency range: 0 to 60 MHz
Relay drive voltage: + 9 to 16V against ground
Current consumption: max. 280 mA (both antenna ports activated)
Dimensions: W 220mm (8,66") x H 103 mm (4") x D 120 mm (4.72")
Weight: 2,4 kg (5.29 lbs) + 1.1 kg (2.42 lbs) mounting bracket
Operating temperature range: -35 .. +70 °C (-31 ... 158 F)
Guaranteed power rating :
5 KW CW / SWR < 1:1.3 in range 1.8 - 30 MHz 3 KW CW / SWR < 1:2 in range 1.8 - 30 MHz 2 KW CW / SWR < 1:3 in range 1.8 - 30 MHz
SWR and isolation :
| Frequency | SWR | Insertion loss | Isolation |
| 1.8 MHZ | 1.01 | < 0.01 dB | < 110 dB |
| 14 MHZ | 1.01 | < 0.01 dB | < 95 dB |
| 28 MHZ | 1.02 | < 0.02 dB | < 80 dB |
values are typical
all measurments were performed with HP8714B network analyzer
- SWR is measured from input to any antenna port - Isolation is measured between unselected radio port and antenna port switched to another radio port 50 ohm terminated