R A D I U S  SP10 and SP21 Programming
radio models are end-user "self programmable" by means
of DIP switch settings in the SP10 or with the aid of "voice prompts" on the SP21.
These radios cannot be programmed to any other channel such as public safety, 
law enforcement, or repeater operation.   For these applications you need
synthesized radios which will need to be programmed via computer.

SP21 Radio

Programming RADIUS SP-21 with "Voice Prompt."

  • To enter programming mode hold down "PUSH-TO-TALK" switch on side while turning radio on .
  • To set operating frequency cycle the "PUSH-TO-TALK"  button to select one of the frequency codes shown below for F1.  Voice prompts will announce each channel as you scroll through.
  • Voice Prompt Programming
    Wave Forms

  • Next to set "PL" code press "MONITOR" button inside the Push-to-talk bar once.  Then cycle the "PUSH-TO-TALK"  button to select one of the 38 PL codes (including "off" for CSQ users) shown below.  Voice prompts will announce each code as you scroll through.
  • Press "MONITOR" to return to standard operating mode.

Programming SP-10
radios with DIP switches
Remove battery and plate under battery
Frequency switches are 4 DIP switches
on lower right.  Optional PL board is
8 position DIP switch board 
at very bottom of radio 

154.570  Reallocated to "MURS" Blue

154.600  Reallocated to "MURS"

Green

Frequency MHz

"Dot"


 SP21
Voice Prompt
Codes

 DIP Switch
ON=TOWARDS OUTSIDE OF CASE
OFF=TOWARDS INSIDE OF CASE
S1 S2 S3 S4

UHF CHANNELS
SP10 Radios only tune to first 16  channels 

464.500 Brown 1 Off Off On On
464.550 Yellow 2 On On Off Off
467.7625 J-Dot 3 On On On On
467.8125 K-Dot 4 Off Off Off Off
467.850 Silver K 5 On On On Off
467.875 Gold K 6 Off Off Off On
467.900 Red K 7 On Off Off Off
467.925 Blue K 8 Off On On On
4462.575f GMRS 9 Off On Off On
462.625 GMRS 10 Off On On Off
462.675 GMRS 11 On Off Off On
464.325 25khz 12 On On Off On
464.825 25khz 13 Off Off On Off
469.2625 25khz 14 On Off On Off
469.500 25khz 15 Off On Off Off
469.550 25khz 16 On Off On On
464.500 12.5khz 17

 

464.550 12.5khz 18
467.7625 12.5khz 19
467.8125 12.5khz 20
467.850 12.5khz 21
467.875 12.5khz 22
467.900 12.5khz 23
467.925 12.5khz 24
462.575 12.5khz 25
462.625 12.5khz 26
462.675 12.5khz 27
464.325 12.5khz 28
464.825 12.5khz 29
469.2625 12.5khz 30
469.500 12.5khz 31
469.550 12.5khz 32
462.7625 12.5khz 33
462.7875 12.5khz 34
462.8125 12.5khz 35
462.8375 12.5khz 36
462.8625 12.5khz 37
462.8875 12.5khz 38
462.9125 12.5khz 39
464.4875 12.5khz 40

VHF CHANNELS
SP10 Radios only tune to first 16  channels 

151.625  Red 1 On On Off Off
151.955 Purple 2 Off Off On On
154.570
Reallocated MURS
Blue 3 Off Off Off Off

154.600 
Reallocated MURS

Green 4 On  On On On
151.655 25khz 5 Off On On ON
151.685 25khz 6 On Off On Off
151.715 25khz 7 Off On Off On
151.775 25khz 8 Off On On Off
151.805 25khz 9 On Off Off On
151.835 25khz 10 On On Off On
151.895 25khz 11 Off Off On Off
151.925 25khz 12 On On On Off
154.490 25khz 13 Off On Off Off
154.515 25khz 14 On Off Off Off
154.540 25khz 15 Off Off Off On
158.400 25khz 16 On Off On On
151.625 12.5khz 17

 

151.955 12.5khz 18
154.570 12.5khz 19
154.600 12.5khz 20
151.655 12.5khz 21
151.685 12.5khz 22
151.715 12.5khz 23
151.775 12.5khz 24
151.805 12.5khz 25
151.835 12.5khz 26
151.895 12.5khz 27
151.925 12.5khz 28
154.490 12.5khz 29
154.515 12.5khz 30
154.540 12.5khz 31
158.400 12.5khz 32
151.700 12.5khz 33
151.760 12.5khz 34
151.5125 12.5khz 35
 "PL" CODED SQUELCH SETTINGS

PL Code

Freq. Hz

SP21
 Voice Prompt

SP-10  DIP Switch Settings

S1 S2 S3 S4 S5 S6 S7 S8
XZ 67.0 1 D D D D D D U U
XA 71.9 2 U D D D D D U U
WA 74.4 3 D D D D D U U U
XB 77.0 4 U U D D D D U U
WB 79.7 5 D D D D U D U U
YZ 82.5 6 U D D D D U U U
YA 85.4 7 D D D D U U U U
YB 88.5 8 U U D D D U U U
ZZ 91.5 9 D D D U D D U U
ZA 94.8 10 U D D D U D U U
ZB 97.4 11 D D D U D U U U
1Z 100.0 12 U U D D U D U U

1A

103.5 13 U D D D U U U U
1B 107.2 14 U U D D U U U U
2Z 110.9 15 U D D U D D U U
2A 114.8 16 U U D U D D U U
2B 118.8 17 U D D U D U U U
3Z 123.0 18 U U D U D U U U
3A 127.3 19 U D D U U D U U
3B 131.8 20 U U D U U D U U
4Z 136.5 21 U D D U U U U U
4A 141.3 22 U U D U U U U U
4B 146.2 23 U D U D D D U U
5Z 151.4 24 U U U D D D U U
5A 156.7 25 U D U D D U U U
5B 162.2 26 U U U D D U U U
6Z 167.9 27 U D U D U D U U
6A 173.8 28 U U U D U D U U

6B

179.9 29 U D U D U U U U
7Z 186.2 30 U U U D U U U U
7A 192.8 31 U D U U D D U U
M1 203.5 32 U U U U D D U U
M2 210.7 33 U D U U D U U U
M3 218.1 34 U U U U D U U U
M4 225.7 35 U D U U U D U U
M5 233.6 36 U U U U U D U U
M6 241.8 37 U D U U U U U U
M7 250.3 38 U U U U U U U U
None

CSQ

Off X X X X X X X D

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Please order by phone to specify your radio parameters

(800) 523-0625
Radios since 1975
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3038 State Columbus IN 47201
 walkytalky@sprynet.com


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