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Radio
Broadcast Technical Consulting and Sales |
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Custom Built |
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Built by M. W. Persons and Associates, Inc. |
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For AM radio stations with 1000
watts or less of RF power, this RF switch is a quick and easy way to select
between a main and an auxiliary transmitter. There are four N-F
connectors for the RF. IE: main transmitter, auxiliary transmitter,
antenna, and dummy load. Whichever transmitter is not on the air is
connected to the dummy load. There is no additional charge for substituting SO-239 (UHF) connectors on an order. Because of the lead lengths inside the box, the switch can only be used up to 8 MHz. Higher frequencies, such as FM 88-108 MHz, require a different switch architecture. The switch comes with a 24 VDC power supply and can be controlled by a remote control system. In case of a power interruption, the switch will automatically return to the position it was in before power was lost. |
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Switches let
you manually select the main or auxiliary transmitter to the antenna.
Tally lights indicate and 2 VDC
status outputs tell a remote control system which transmitter is connected
to the antenna.
There is built-in logic to prevent a transmitter from running into a dummy load on an unattended basis. The Test/Normal switch allows testing of a transmitter into a dummy load. The entire assembly is in an electrical box 8" x 8" x 4". It can be mounted in any position on a wall or ceiling. |
| The switch, as shown, is $580.00 plus shipping and tax. it comes complete with a schematic diagram. The switch is not suitable for use on frequencies above 8 MHz. |
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page last edited 01/13/2010
