Busy Channel Lock-Out (Bclo); Changing The Tx Deviation Level - Yaesu FT-25R Advance Manual

Miscellaneous Settings

Busy Channel Lock-Out (BCLO)

The BCLO feature prevents the transmitter from being activated if a signal strong enough
to break through the "noise" squelch is present. On a frequency where active stations
using different CTCSS or DCS codes may not be heard, (because your transceiver may
be muted by its own Tone Decoder). BCLO prevents transmissions from disrupting the
other users communications accidentally. The default setting is OFF; to activate or change
the BCLO setting, follow the below procedure:
1. Press and hold the F key to enter the Set mode.
2. Press the [▲] or [▼] key to select Set Mode Item "4 B-CH. L/O".
3. Press the F key to enable adjustment of this Set Mode Item.
4. Press the [▲] or [▼] key to select "ON" or "OFF".
5. Press the PTT switch to save the new setting and
return to normal operation.

Changing the TX deviation Level

In many areas of the world, channel congestion has required that operating channels be
closely spaced. Closer channel spacing may require reduced deviation levels to preclude
adjacent channel interference. To change the FT-25R/E TX deviation level, follow the
below procedure:
1. Press and hold the F key to enter the Set mode.
2. Press the [▲] or [▼] key to select Set Mode Item "37 WIDE/NAR".
3. Press the F key to enable adjustment of this Set Mode Item.
4. Press the [▲] or [▼] key to select "NARROW".
Display
WIDE (default setting) Wide (±5 kHz) TX Deviation.
NARROW
If "Narrow" is selected (HALF DEVIATION active), the transmitter deviation will be
approximately ±2.5 kHz, and the received audio output level will be increased, for
easier listening on the narrow signal.
5. Press the PTT switch to save the new setting and return to normal operation.
FT-25R/FT-25E Advance Manual
Description
Narrow (±2.5 kHz) TX Deviation.
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