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Warmup Signal
If this mode is enabled, a special "warmup" signal is transmitted for a brief period of time at the beginning of each trans-
mission. This may improve reception by satellites in some circumstances. To access from the main System
Configuration menu, enter "3" for Mode Selection, then enter "7" for Busy Channel Lockout.
Transceiver Setup
The OSMAC Base Station is equipped with a transceiver that enable the base station to communicate with a two-way
radio. The base station can also interface with an external transceiver. In either case, it has been programmed with the
correct transmitter type, carrier detect inversion, transmit data inversion and TX bandwidth modes. The user should not
change these settings or improper operation will result. To access from the main System Configuration menu, enter "4"
for the Transceiver Setup.
Transmit and Receive Frequencies
Enter the desired transmit or receive operating frequency using the number keys. The decimal point is automatically
entered. Use the "DEL" key to delete any incorrect entries. Valid frequencies range from 403.005 Mhz to 512.995 Mhz
and the last digit must be a five or a zero to be a valid entry. Press "F1" or "–" key to accept the new frequency. To
access Transmit Frequency from the Transceiver Setup menu, enter "1" for Transmit Setup, then enter "1" for Transmit
Frequency. To access Receive Frequency from the Transceiver Setup menu, enter "2" for Receive Setup, then enter "1"
for Receive Frequency.
Transmit and Receive Signaling
By enabling Carrier Squelch mode, the base station will allow the two-way-radio user to hear the command signals
being transmitted. Carrier Squelch mode may be desirable if no other users or interference are on the channel. To
enable this mode, press "1" to select CARRIER ONLY. Press the "F1" key to save configuration and "–" to exit the menu.
To access Transmit Signaling from the Transceiver Setup menu, enter "1" for Transmit Setup, then enter "2" for Transmit
Signaling. To access Receive Signaling from the Transceiver Setup menu, enter "2" for Receive Setup, then enter "2" for
Receive Signaling.
CTCSS operation should be used when other users are sharing the channel, or there are excessive interference in the
channel, and or two-way-radio users do not want to hear the transmission signals. In this mode, a low frequency tone is
transmitted along with the desired audio. The receiver is enabled only when this tone is present, thus eliminating
unwanted signals. To enable this mode, press "2" to select CTCSS from the Receive Signaling menu. Use the arrow
keys to select the desired tone frequency. Press the "F1" key to accept and save the frequency.
CW Identification Call Sign
In many cases, the rules and regulations under which the OSMAC Base Station is licensed requires the station's Call
Sign to be transmitted at regular intervals using Morse Code for identification purposes. The Base Station sends the Call
Sign (with CTCSS turned off) every 10 minutes if the Call Sign has been programmed. This feature is set disabled from
the factory.
To enable this feature, press "5" from the main System Configuration menu. At the prompt, enter your station's Call Sign
identification number from your license as follows:
• Enter the numbers directly from the keypad.
• Letters and other special symbols are entered by pressing the arrow keys.
• Press the "F2" key to accept the displayed letter or to enter a "space" character which is displayed as a "_" and results
in a pause in the Morse Code.
• Press the "DEL" key to correct errors or clear the display completely to disable CW Identification.
• Press the "F1" or "–" key to accept the Call Sign settings and exit the menu.
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RELEASED Version
©Toro 2006-2006
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