• Reversible, remotely controlled antenna switching system for eight antennas in 8x1 mode.
  • Aluminum cabinet painted in the dark gray color, having 17 UHF type (PL-259) for the R.F connections and one DB-25 for remote control.
  • Allows some different configurations of use, see diagrams of examples to follow.


Specifications:


Size:
Width 25cm - Height 7cm - Deep 12cm
Power Supply:
D.C. 14 Volts + or - 20% drain about 120mA
Max. power allowed:
3000 Watts R.M.S with S.W.R. equal or less than 1.5:1
Frequency of operation:
D.C. to 60MHz
Time delay to switch:
Equal or less than 50ms (exchange forbidden during TX)
Insertion loss:
Equal or less than 0,02dB
Crosstalk:
Equal or less than -68dB to 30MHz and -55db to 60MHz


Connections suggestions:


Eight antennas, one radio
The switcher AS-81R receives the signals from eight antennas selecting one of them for the radio, leaving the others seven available in the inferior connectors. In them can be installed connector in short to put ground on free antennas. In the case of power supply disconnection, the radio became free and all antennas are grounded. Another possibility is the use of another switcher in the inferior connectors to make use the antennas not selected for the main equipment.

Eight antennas, two radios
The switcher AS-81R can be cascaded as shown above, allowing to share up to eight antennas between two or more equipment. For each added switcher AS-81R, can be possible the use one more radio, sharing the same set of antennas. In the same way, on the last switcher of the cascade, can be installed connector in short to put ground on free antennas. Also in the case of power supply disconnection, the radio became free and all antennas are grounded. Another possibility is the use of another switcher in the inferior connectors to make use the antennas not selected for the main equipment.

Eight antennas, four radios or more
Here an example finishing the net with a switcher model AS-82. The functioning is similar to the previous diagram also with automatic switch to ground for the antennas not in use, since the model AS-82 already makes this internally. More switchers type AS-81R can be place on the net to allow to add more radios to the system.

 

16 antennas solution diagram

 

 

 

 



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