140 Part F: Configuring Channels © Tait Electronics Limited December 20073. If necessary, alter the receive frequency and the transmit frequency.Important: Do not assign a prohibited frequency to the transmitter.For example, 406.0-406.100 MHz is reserved internationally fordistress beacons.For simplex applications, you can make the receive and transmit frequenciesthe same. The base station automatically shifts the transmit frequency by25 kHz when it is not transmitting, to prevent desensitisation of the receiver.Note: The Service Kit does not check whether the base station canoperate on these frequencies.4. Click in the Signalling Profile cell. An arrow appears at the right of thecell. Click it and select a profile from the drop-down list. This list containsall the profiles defined in Configure > Base Station > Signalling Profiles.Note: You can use Task Manager instead of the channel table toselect signalling and channel profiles. See TN-1154-AN for details.5. If you selected the Default profile, you can edit the Receive Signalling andthe Transmit Signalling cells. If you selected a custom profile, these cellsare read-only; they display what has been defined in the profile. To changethem, you must select a different profile or alter the current profile’s settings.6. In a similar way, select a channel profile.7. Click OK to confirm your changes and close the form.Note: If you are editing a large number of channels, periodicallyclick OK, and then Save.Adding and Copying ChannelsThe Channel Table form (Configure > Base Station > Channel Table) has arow of buttons along the bottom that give you a variety of methods for addingto the number of channels.Insert New The Insert New button inserts a row below the current row. The row iscontains default values and is assigned the Default profiles.Insert Copy The Insert Copy button copies the current row and inserts it below that row.The channel number is incremented.Block Copying ChannelsIn the channel table, Block Copy lets you create a block of channels. Eachchannel in the block has its own frequency pair, but all other configurations arethe same. You can subsequently edit any channel as desired.1. Select Configure > Base Station > Channel Table.2. Click in the row of the channel that you want to block copy.3. Click Block Copy. The Block Copy dialog box appears.
