Multi-Position, RF Selector Switches
Bird®, 50-Ohm Coaxial Selector Switches employ a unique, rugged and reliable design which permits positive contact, low insertion VSWR and negligible cross talk between channels. The switching mechanism is 4 1/2" of RG-87/U Teflon cable which is pulled away from the mating Male N connectors and rotated to the desired switch position.
The switches have a valuable advantage that they cannot be operated accidentally, but must be operated by intentional sequential movement. The knob must be grasped, pulled out, rotated and pushed in to make contact.
Model Selections
| Model |
Positions |
Coaxial Circuits |
| 718 |
8 |
1 |
| 7181 |
10 |
1 |
| 72-2 |
2 |
2 |
| 74 |
6 |
1 |
| 7422 |
2 |
1 |
| 7431 |
4 |
1 |
| 7441 |
3 |
1 |
Item Name
50 Ohm, RF Selector Switches
Frequency Range
DC to 10 GHz
VSWR
100 MHz: Negligible
1 GHz: 1.06 (max)
4 GHz: 1.30 (max)
Insertion Loss
100 MHz: 0.02 dB
1 GHz: 0.09 dB
4 GHz: 0.22 dB
RF Power
Max. Rating @ 65°C
100 MHz: 850W
1 GHz: 200W
4 GHz: 75W
Attenuation
For unused channel - 75 dB (cross talk)
Temperature Range
-60 to +65 °C (-76 to +149 °F)
Weight
2-1/2 lbs. (1.1 kg)