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SA818 Programming

Before programming the SA818 module, make sure you consult the band plan for your country and transmit on a frequency you are allowed to use.

Intallation

The easiest way to install is program is to use the command pip. Pip will automatically take care of installing the dependencies.

$ sudo pip install sa818

You can also clone this repository and use the setup.py script with the following command. You will have to install the python package pyserial manually. To install dependencies, refer to the manual of your operating system.

$ git clone https://github.com/0x9900/SA818.git
$ sudo python3 setup.py install

Example

[root@allstar ~]# sa818 version
SA818: INFO: Firmware version: V4.2

[root@allstar ~]# sa818 radio --frequency 145.230 --offset -.6 --ctcss 100
SA818: INFO: +DMOSETGROUP:0, BW: Wide, Frequency (RX: 145.2300 / TX: 144.6300), CTCSS (TX: 100.0 / RX: 100.0), squelch: 4, OK

[root@allstar ~]# sa818 volume --level 5
SA818: INFO: +DMOSETVOLUME:0 Volume level: 5, OK

If you use an FTDI dongle to program the SA828 module the USB port can be specified with the --port argument

[root@allstar ~]# sa818 --port /dev/ttyAMA0 volume --level 5
SA818: INFO: +DMOSETVOLUME:0 Volume level: 5

It is possible to specify a different CTCSS or DCS code for transmit and receive by separating the two codes by a comma (no spaces). For example, --ctcss 100,88.5 will set the CTCSS 100Hz for transmit and 88.5Hz for receive.

Note

It is also possible to specify CTCSS or DCS on transmit or receive only. For example, --ctcss 100,None will set the CTCSS 100Hz for transmit only (nothing for receive).

Usage

This program has for sections:

  • radio: Program the radio's frequency, tone and squelch level
  • volume: Set the volume level
  • filters: Turn on or off the [pre/de]-emphasis and as well as the high and low pass filter
  • version: display the firmware version of the SA818 module
usage: sa818 [-h] [--debug] [--port PORT]
                [--speed {300,1200,2400,4800,9600,19200,38400,57600,115200}]
                {radio,volume,filters,version} ...

generate configuration for switch port

positional arguments:
  {radio,volume,filters,version}
    radio               Program the radio (frequency/tome/squelch)
    volume              Set the volume level
    filters             Enable/Disable filters
    version             Show the firmware version of the SA818

options:
  -h, --help            show this help message and exit
  --debug
  --port PORT           Serial port [default: linux console port]
  --speed {300,1200,2400,4800,9600,19200,38400,57600,115200}
                        Connection speed

Radio

usage: sa818 radio [-h] [--bw {0,1}] --frequency FREQUENCY
                      [--offset OFFSET] [--squelch SQUELCH]
                      [--ctcss CTCSS | --dcs DCS] [--tail TAIL]

options:
  -h, --help            show this help message and exit
  --bw {0,1}            Bandwidth 0=NARROW (12.5KHz), 1=WIDE (25KHx) [default:
                        WIDE]
  --frequency FREQUENCY
                        Receive frequency
  --offset OFFSET       Offset in MHz, 0 for no offset [default: 0.0]
  --squelch SQUELCH     Squelch value (0 to 8) [default: 4]
  --ctcss CTCSS         CTCSS (PL Tone) 0 for no CTCSS [default: None]
  --dcs DCS             DCS code must be the number followed by [N normal] or
                        [I inverse] [default: None]
  --tail TAIL           Close CTCSS Tail Tone (Open/Close)

Volume

usage: sa818 volume [-h] [--level LEVEL]

options:
  -h, --help     show this help message and exit
  --level LEVEL  Volume value (1 to 8) [default: 4]

Filters

usage: sa818 filters [-h] --emphasis EMPHASIS --highpass HIGHPASS --lowpass
                        LOWPASS

options:
  -h, --help           show this help message and exit
  --emphasis EMPHASIS  [Pr/De]-emphasis (Enable/Disable)
  --highpass HIGHPASS  High pass filter (Enable/Disable)
  --lowpass LOWPASS    Low pass filters (Enable/Disable)

CTCSS codes (PL Tones)

67.0, 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, 162.2, 167.9, 173.8, 179.9, 186.2, 192.8,
203.5, 210.7, 218.1, 225.7, 233.6, 241.8, 250.3

DCS Codes

DCS codes must be followed by N or I for Normal or Inverse:

Example: 047I

023, 025, 026, 031, 032, 036, 043, 047, 051, 053, 054, 065, 071, 072,
073, 074, 114, 115, 116, 125, 131, 132, 134, 143, 152, 155, 156, 162,
165, 172, 174, 205, 223, 226, 243, 244, 245, 251, 261, 263, 265, 271,
306, 311, 315, 331, 343, 346, 351, 364, 365, 371, 411, 412, 413, 423,
431, 432, 445, 464, 465, 466, 503, 506, 516, 532, 546, 565, 606, 612,
624, 627, 631, 632, 654, 662, 664, 703, 712, 723, 731, 732, 734, 743,
754