• Antenna switching system with 4x1 reversible, controlled for illuminated keyboard keys of momentary contact.
  • Aluminum cabinet painted in dark gray color, having four keys in the front panel and nine coaxial connectors UHF type (PL-259) for the R.F connections in the back.
  • The keyboard keys has internal illumination to show the position in use, and allow place to write the name of the antenna.
  • It allows many configurations for using.


Specifications:

Size:
Width 25cm - Height 7cm - Deep 13cm
Power supply:
D.C. 14 Volts + or - 20% (drain about 70mA)
Max. power allowed:
1000 Watts R.M.S with S.W.R. equal or less than 1.5:1
Frequency of operation:
D.C. to 30MHz
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 -46dB to 20MHz and -42db to 30MHz.


Connections suggestions:

Four antennas, one radio plus four optional outputs.
On this configuration, the panel keys select which antenna will be directed to the radio, being the others three available ones became free for use in other equipment. In the case of power supply disconnection, the radio is off of the antennas and the four antennas are available on the additional outputs.

Four antennas, a radio and ground.
On this configuration, the panel keys select which antenna will be directed to the radio, being the others three available ones became connect to ground. For this it is enough that the user places four coaxial connectors in short on the additional outputs. In the case of power supply disconnection, the radio is disconnected and the four antennas are grounded.

Four radios, one main antenna and four aux.antennas.
On this configuration, the panel keys select which radio are connected to the main antenna, while the others three are directed to the additional outputs. In these connectors other antennas could be connected allowing that the same ones can operate with diverse radiant systems. In the case of power supply disconnection, the radios will be connected to the additional connectors and the main antenna will be off.

Four antennas, two radios.
In this configuration, we used two AS4R switchers in a 4x2 configuration. It is possible using any of the four antennas in two radios. As one extra, the four additional outputs can be filled with earth or on in others 4 radios.

 

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