Clear-Com BS850 (Last time buy) - Manual (Page 34)

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Beltpac Receiver Frequency:
You can change the Beltpac receivers from the Configure tab>Edit Beltpac Receivers box>
>Beltpac>Receivers
path as shown below:
You can click on the Frequency field of the table to reveal the frequency editing form. Click on the
Group to select frequencies P1 – P4, S1 – S4 and T1 – T4 (presets in the system that cannot be
changed). Frequencies U1 – U16 can be adjusted and saved by the user. If you select a user
frequency, U1 – U16, move the cursor to the frequency box and use the up and down arrow buttons
together with the control knob to select a frequency. User frequencies can be selected in 25 kHz
increments. You must click on OK to save your frequency changes.
Remember that the occupied bandwidth is over 180 kHz. This means frequencies must not be closer
to each other than 500 kHz.
NOTE: When only one receiver is present on a given Beltpac, it will switch between the two
frequencies as needed. When two receivers are present, the primary receiver is Rx1 and the second
receiver is Rx2. Normally, Rx1 is for intercom Ch1. Rx2 is for intercom Ch2, unless base Tx2 is off or
in IFB mode. In that case, both intercom channels go through base Tx1 and thus Beltpac Rx1.
Normally, Beltpac Rx1 is the same as base Tx1, and Beltpac Rx2 is the same as base Tx2.
Beltpac Receiver Squelch Level:
As shown in the Rx1 Squelch and Rx2 Squelch columns, you can change the receiver squelch for
each receiver on a given Beltpac.
NOTE: You should not normally need to adjust Beltpac squelch. Adjustment of Beltpac receiver
squelch can only be made when the base transmitters are off. It is normal for the Rx2 squelch setting
to be less than half that of Rx1 to achieve the same sensitivity. Rx2 squelch adjustment is reserved
for a second receiver, when a Beltpac has two receivers.