FF-CAD Codec Audio Delay

Description

The FF-Tone is a remote programmable encode/decode module designed for repeater use:

Easily field configured to support desired filter and shaping requirements.
Includes selectable filtering for RX and/or TX audio path.
PTT stretch circuit with encode mute (removes squlch burst from receiving stations).
Remote tone selection via FF-800 external output commands.
Small size that is quick to install.

The mini-DIN Adapter is an optional adapter that allows existing 4-pin min-DIN connectors to be used with the FF-Tone.

Here is a view as installed in the FF-180 chassis.

FF-Tone Specifications
Power requirement	+12 volts @ 50 mA, -5V @ 20mA (derived from FF-800 power connector, P1)
Digital signals:
COS in	0 - 40V (with 3 programmable thresholds)
PTT out	0 - 20V, 50mA sink (max)
Analog signals:
Audio input level	0 - 3.0 Vrms
Input/Output coupling	AC
Input impeadance	100 Kohm
Audio Output level	tracks input level
Audio Output impeadance	1Kohm
Board dimensions	1.3" x 3.25"
CTCSS tones, 47 total:
67.0	156.7
71.9	162.2
74.4	167.9
77.0	173.8
79.7	179.9
82.5	186.2
85.4	192.8
88.5	203.5
91.5	210.7
94.8	218.1
97.4	225.7
100.0	233.6
103.5	241.8
107.2	250.3
110.9	69.3
114.8	159.8
118.8	183.5
123.0	189.9
127.3	196.6
131.8	199.5
136.5	206.5
141.3	229.1
146.2	254.1
151.4	notone