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Hamplus
Copyright © 2008
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- Antenna
Switcher with 8 inputs by one output remotely controlled.
- Aluminum
cabinet painted in the dark gray color especially developed to
allow external assembly.
- The coaxial
connectors are the UHF type (PL-259) and a DB-25 for remote control.
- All unused
inputs are automatically connected to ground.
- When the
power supply are disconected, all inputs are connected to ground.
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Specifications:
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Size:
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Diameter
15,5cm - (16cm in the point of attachment of the support) and
height 5cm |
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Power
Supply:
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D.C.
14 Volts + or - 20% drain about 35mA |
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Max.
power allowed:
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3000
Watts with S.W.R. equal or less than 1.5:1 |
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Frequency
of operation:
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D.C.
to 60MHz |
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Time
delay to switch:
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Equal
or less than 50ms (exchange forbidden during TX) |
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Insertion
loss:
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Equal or less than 0,02dB |
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Crosstalk:
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Equal or less than -58dB to 30MHz and -52db to 60MHz |
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Connections suggestions:
| Eight
antennas, one radio: |
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In this configuration,
we can select one of the eight antennas to one equipment. The remote
control can be connected with a long handle, and bring inside the
shack only one coaxial cable.
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| Eight
antennas, two radios or more |
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| In this configuration,
the switcher AS-81 receives the signals from one switcher type AS-81R.
Thus, we have the possibility to use any one of the eight antennas
in two radios. A special logical circuit system hinders the use of
the same antenna in the two radios simultaneously. Intercalating other
switches type AS-81R we can expand the system until terms eight antennas
and eight radios. |
| 16 antennas solution diagram |
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