Midland Radio P-20 User Manual

http://www.midlandradio.com 

Page 10 of 16 

ACTIVATING “PRIVACY CODES” 
 
To activate “CTCSS” codes 
1. Press 

the 

“F” button repeatedly (usually 3 times) to cause the icon “CTCSS” to be displayed 

in the upper left of the display to flash. 

2.  Press and release the “/\” or “\/” buttons to select the “CTCSS” code you desire. 

 

A code of “00” means no code is programmed. 

 

You must do this for each of the channels you want CTCSS codes on. 

 

Activating the “CTCSS” code will prevent you from hearing any conversation that is not 

using the same “CTCSS” code. This does not make your conversation private. 

 The following is a list of frequencies of the CTCSS codes. Different brands of radios may use a 
different number code for the frequencies. For operation with other brands of radios the selected 
CTCSS frequency must match. 
 
 

01=67.0 Hz  11=97.4 Hz 

21=136.5 Hz 

31=192.8 Hz 

 

02=71.9 Hz  12=100.0 Hz 

22=141.3 Hz 

32=203.5 Hz 

 

03=74.4 Hz  13=103.5 Hz 

23=146.2 Hz 

33=210.7 Hz 

 

04=77.0 Hz  14=107.2 Hz 

24=151.4 Hz 

34=218.1 Hz 

 

05=79.7 Hz  15=110.9 Hz 

25=156.7 Hz 

35=225.7 Hz 

 

06=82.5 Hz  16=114.8 Hz 

26=162.2 Hz 

36=233.6 Hz 

 

07=85.4 Hz  17=118.8 Hz 

27=167.9 Hz 

37=241.8 Hz 

 

08=88.5 Hz  18=123.0 Hz 

28=173.8 Hz 

38=250.3 Hz 

 

09=91.5 Hz  19=127.3 Hz 

29=179.9 Hz 

00=OFF 

 

10=94.8 Hz  20=131.8 Hz 

30=186.2 Hz   

 
 
DCS CODES 
 
There are 83 “DCS” codes. These are used in the same manor as the “CTCSS” codes.  
To activate the DCS Codes 
1.  Press the “F” button repeatedly until the “DCS” icon flashes (usually 4 times). 
2.  Press the “/\” or “\/” button to select the “DCS” code you desire. 
3.  Press the “ENTER” button when you have made your selection. 

 

When you enter the program mode with the “F” button, the radio will go back to operate 

mode after about 8 seconds if no buttons are pressed. 

 

A code of “00” means no code is programmed. 

 

You must do this for all the channels you want “DCS” codes on. 

 

Turning on the “DCS”  code will prevent you from hearing any conversation that is not 

using the same “DCS” code. This does not make your conversation private. 

 
The following list contains the values of the “DCS” codes. Different brands of radios may use 
different codes. For operation with other brands of radios the selected “DCS” value must be the 
same. 
01=023  11=071  21=134  31=223  41=306  51=411  61=503  71=631  81=734 
02=025  12=072  22=143  32=226  42=331  52=412  62=506  72=632  82=743 
03=026  13=073  23=152  33=243  43=315  53=413  63=516  73=654  83=754 
04=031  14=074  24=155  34=244  44=331  54=423  64=532  74=662 
05=032  15=114  25=156  35=245  45=343  55=431  65=546  75=664 
06=043  16=115  26=162  36=251  46=346  56=432  66=565  76=703 
07=047  17=116  27=165  37=261  47=351  57=445  67=606  77=712 
08=051  18=125  28=172  38=263  48=364  58=464  68=612  78=723 
09=054  19=131  29=174  39=265  49=365  59=465  69=624  79=731 
10=065  20=132  30=205  40=272  50=371  60=466  70=627  80=732