TONE CODED SQUELCH
Yaesu FT-8800R Operating Manual (courtesy of W5JCK) Page 31 of 83
7. Rotate the DIAL knob until the display indicates the Tone Frequency you need
to be using.
CTCSS TONE FREQUENCY (Hz)
67.0
69.3
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
173.8
177.3
179.9
183.5
186.2
189.9
192.8
196.6
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
241.8
250.3
254.1
8. When you have made your selection, press and hold in the DIAL knob for ½
second to save the new setting and exit to normal operation. 0.
1. Your repeater may or may not re-transmit a CTCSS tone—some
systems just use CTCSS to control access to the repeater, but don’t pass it
along when transmitting. If the S-Meter deflects, but the FT−8800R is not
passing audio, repeat steps 1 through 4 above, but rotate the DIAL
knob so that ENC is displayed—this will allow you to hear all traffic on the
channel being received.
2. You may select the Tone Squelch mode (ENC, ENC.DEC, or DCS) on the
Main band using the microphone’s key.
DCS Tone System
Another form of tone access control is Digital Code Squelch (DCS). It is a newer, more
advanced tone system which generally provides more immunity from false paging than does
CTCSS. The DCS Encoder/Decoder is built into your FT−8800R, and operation is very similar
to that just described for CTCSS Tone System on page 30. Your repeater system may be
configured for DCS; if not, it is frequently quite useful in Simplex operation if your friend(s)
use transceivers equipped with this advanced feature.
Just as in CTCSS operation, DCS requires that you set the Tone Mode to DCS and
that you select a tone code.
1. Press the SET key momentarily to enter the Set mode.
2. Rotate the DIAL knob to select Menu #41 TONE M.
3. Press the DIAL knob momentarily, then rotate the DIAL knob until DCS
appears on the display; this activates the DCS Encoder/Decoder.
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