Dcs Code Inversion - Yaesu FT-8900R Operating Manual

Two things must be remembered in this regard:
You must be sure that your repeater uses the same tone type (
Some repeaters do not pass the
transmitting on the repeater uplink (input) frequency in order to allow
to work.
Scanning
To scan for the tone in use:
1. Set the radio up for either
page 28) operation. In the case of
case of
DCS
2. Press the
3. Rotate the
Menu #10 DCS.COD
4. Press the
5. Press the
Main
or tone/code.
DCS
6. When the radio detects the correct tone or code, it will halt on that tone/code, and
audio will be allowed to pass. Press the
tone/code, then press and hold in the
setting and exit to normal

(1) If the Tone Scan feature does not detect a tone or code, it will continue
to scan indefinitely. When this happens, it may be that the other station is
not sending any tone. You can press the Main band
scan at any time.
(2) Tone Search Scanning works either in the VFO or Memory modes.

DCS Code Inversion

The system was first introduced in the commercial
DCS
where it is now in widespread use.
names, such as
DPL
uses a codeword consisting of a 23-bit frame, transmitted (subaudible) at a data rate of
DCS
134.4 bps (bit/sec). Occasionally, signal inversion can result in the complement of a code to
be sent or received. This prevents the receiver squelch from opening with
decoded bit sequence would not match that selected for the operation.
Yaesu FT-8900R Operating Manual Expanded Edition (courtesy of W5JCK)
CTCSS
CTCSS Tone System
, will appear on the display.
momentarily to enter the
SET key
knob to select
DIAL
during operation.
DCS
knob to enable adjustment of the selected
DIAL
band key momentarily to start scanning for the incoming
operation.0.
is sometime referred to by its different proprietary
DCS
® (
Digital Private Line
tone; you may have to listen to the station(s)
(see page 27) or
, will appear on the display; in the
CTCSS
mode.
Set
Menu #39 TONE F
knob momentarily to lock in that
DIAL
knob for ½ second to save the new
DIAL
(
LMR Land Mobile Radio
®, a registered trademark of Motorola, Inc.).
TONE CODED SQUELCH
or
CTCSS DCS
Tone Search
DCS Tone System
when is selected, or
CTCSS
Item.
Menu
key to halt the
) service,
enabled, as the
DCS
Page 30 of 77
).
(see
CTCSS