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Tech Update
Tunwall Radio Supports AM DAs
Tunwall Radio now offers SNMP-enabled phasor and transmitter controllers for AM directional systems.
“Front-panel pushbuttons are provided for local control, and SNMP v2c allows users to remotely perform commands and check the status of transmitter and pattern selection, as well as the position of all contactors in the phasor/antenna system,” it states.
Access via internet connection is available through the built-in web server. Standard remote connections can also be made to terminal strips on the rear panel of the controller.
“AM directional controllers are now housed in enclosed aluminum rackmount boxes instead of open-panel and shelf designs used previously. All controller functions are preprogrammed and extensively tested in our shop, making for simple installation and operation.”
Timed sequences remove RF power, move contactors and verify positions before RF power is restored. Front-panel indicators show the pattern and transmitter in use, and the position of all RF contactors in the system. Local and remote modes are selected with a key switch. There is also an emergency transmitter interlock bypass mode.
SNMP v2c capability is also available on the company’s switch controllers for FM.
Info: http://tunwallradio.com
