Operating instructions

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RF Technology R800 Page 20
7.4.21 CTCSS 7 SPECIFICATIONS
7.4.21 CTCSS
The CTCSS decoding is provided by a hybrid module. This provides programmable
decoding of all 38 EIA and 12 other common tones.
TONE SQUELCH FREQUENCIES
Tone Freq. EIA# Tone Freq. EIA# Tone Freq. EIA#
No Tone 114.8 A6 179.9 B12
67.0 A1 118.8 B6 183.5
69.4 123.0 A7 186.2 A13
71.9 B1 127.3 B7 189.9
74.4 C1 131.8 A8 192.8 B13
77.0 A2 136.5 B8 196.6
79.7 C2 141.3 A9 199.5
82.5 B2 146.2 B9 203.5 A14
85.4 C3 151.4 A10 206.5
88.5 A3 156.7 B10 210.7 B14
91.5 C4 159.8 218.1 A15
94.8 B3 162.2 A11 225.7 B15
97.4 165.5 229.1
100.0 A4 167.9 B11 233.6 A16
103.5 B4 171.3 241.8 B16
107.2 A5 173.8 A12 250.3 A17
110.9 B5 177.3 254.1
7.4.22 External Squelch Input
An external input is provided to squelch or mute the receiver audio output. This may be used
in conjunction with an external decoder or to mute the receiver during transmissions.
The External Squelch Input can be connected to the T/R Relay pin on Eclispe transmitters to
mute the receiver during transmission.
7.5 Connectors
7.5.1 Antenna Connector
Type N Female Mounted on the module rear panel
7.5.2 Power & I/O Connector
25 pin “D” Male Mounted on the rear panel
7.5.3 Test Connector
9 pin “D” Female mounted on the front panel.