Double Ten Switch Features
- 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 60 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
- unselected 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
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.
Specifications
Characteristic impedance: 50 ohm
Operating frequency range: 0 to 30 MHz
Relay drive voltage: + 9 to 16V against ground
Current consumption: max. 210 mA (both ports activated)
Dimensions: W 360mm (14,17") x H 103 mm (4") x D 120 mm (4.72")
Weight: 3,6 kg (7.93 lbs) + 2 kg (4.41 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 | < 0.03 dB | 90 - 115 dB ** |
| 14 MHZ | 1.06 | < 0.03 dB | 70 - 105 dB ** |
| 28 MHZ | 1.15 | < 0.06 dB | 60 - 80 dB ** |
worst values
** depending on antenna port
all measurments were performed with HP8714B network analyzer
- SWR is measured from input to any antenna port - Isolation is measured between two radio ports terminated 50 ohm at different antenna ports