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Note: If VOX function is on and the gain is at a high level, and the 
activities is also high, then if connect speaker/microphone to the 
transceiver, the enlarged receding signal through 
speaker/microphone may cause the transceiver start transmitting 
automatically.

16. Frequency Read/Write Encryption

Please use programmable software to set this function

17. Scrambler Function

Users can set scrambler function ON/OFF on every working 
channel. Scrambler function is one of the ways for information 
encryption. Scrambler is to restore the transmission spectrum 
through the spectrum to complete the change of the transmission 
spectrum, and to restore the signal after receiving it, so that achieve 
voice encryption finally. Each channel can select scrambler groups
independently.

18. CTCSS/DCS

Users can set CTCSS/DCS signaling on transceiver channel. Only 
when receiving same CTCSS/DCS signaling from other transceiver, 
the squelch will open. If same channels but with different 
CTCSS/DCS signaling for calling, then squelch will not open, only 
green light is on. CTCSS/DCS codes are listed below:

67.0
94.8

131.8
171.3
203.5

69.3
97.4

136.5
173.8
206.5

71.9

100.0
141.3
177.3
210.7

82.5

114.8
159.8
189.9
233.6

85.4

118.8
162.2
192.8
241.8

79.7

110.9
156.7
186.2
229.1

77.0

107.2
151.4
183.5
225.7

74.4

103.5
146.2
179.9
218.1

88.5

123.0
165.5
196.6
250.3

91.5

127.3
167.9
199.5
254.1

14

15

CTCSS (50)

DCS (105*2)

D023N
D054N
D125N
D165N
D245N
D274N
D356N
D445N
D506N
D627N
D731N

D025N
D065N
D131N
D172N
D246N
D306N
D364N
D446N
D516N
D631N
D732N

D026N
D071N
D132N
D174N
D251N
D311N
D365N
D452N
D523N
D632N
D734N

D043N
D114N
D152N
D225N
D263N
D332N
D413N
D464N
D565N
D664N

D047N
D115N
D155N
D226N
D265N
D343N
D423N
D465N
D606N
D703N

D036N
D074N
D145N
D223N
D261N
D331N
D412N
D462N
D546N
D662N

D032N
D073N
D143N
D212N
D255N
D325N
D411N
D455N
D532N
D654N

D754N

D031N
D072N
D134N
D205N
D252N
D315N
D371N
D454N
D526N
D645N
D743N

D051N
D116N
D156N
D243N
D266N
D346N
D431N
D466N
D612N
D712N

D053N
D122N
D162N
D244N
D271N
D351N
D432N
D503N
D624N
D723N

Summary of Contents for RT48

Page 1: ...eased with the quality and features of this product Before using this Two way radio please read the manual which contains important operating instructions for safe usage RF Energy Awareness control information and operational instructions for compliance with RF Energy Exposure limits in applicablenational and international standards and also read the operational instructions for safe use We are gr...

Page 2: ...hannel Lockout Wide Narrow Bandwidth Selection VOX Frequency Read Write Encryption Scrambler Function CTCSS DCS CTCSS 50 DCS 105 2 Technical Specifications Warnings 01 01 02 03 03 03 04 05 05 06 08 08 08 08 08 08 09 10 10 11 11 12 12 12 13 13 14 14 14 15 15 17 18 UNPACKING AND CHECKING EQUIPMENT We recommend that you open the packing box before use and check carefully the main transceiver in the p...

Page 3: ...long time 1 Use Li ion Battery Charge the battery before use To prevent battery pack from discharging please remove the battery from transceiver or device when it is not in use and then store it in a cool dry place For battery long time storage 1 Remove the battery from device 2 If possible discharge battery 3 Store it in a cool below 25 and dry place 2 Battery Characteristic The capacity of batte...

Page 4: ...tery pack for easy carry To remove the belt clip directly remove the two screws only 7 Install Hand Strap Install the hand strap at the middle circle of the transceiver Insert the top part of the battery pack into the top 2 slots of the transceiver and then press the battery pack down until a click sound is heard To remove the battery pack make sure the transceiver has been turned off and then pre...

Page 5: ...Antenna Channel knob Power Volume switch Status Indicator light Speaker Output sound Microphone Input sound SP MIC Program Jack SP MIC Battety Pack for Charging the Radio S K1 PTT S K2 06 07 ...

Page 6: ...e problem of the call quality and noise of the walkie talkie the squelch circuit or the squelch function is designed Scan Detect the working status of channel 1 to channel 16 which is defined as scannable channel programming software can define whether each channel can be swept or unscannable when scanned channel have signal the radio will automatically stop at this channel and for conversation Al...

Page 7: ...able when scanned channel have signal the radio will automatically stop at this channel and for conversation Note a The walkie talkie will stop on the channel with the signal After the signal disappears it will continue to scan the next channel after about 10 seconds b When the scan channel is less than 2 channels the radio can not scan c If the current channel is not 16 channels 16 channels are s...

Page 8: ...ited and keep beeping until release PTT button 14 Wide Narrow Bandwidth Selection The default bandwidth is Wide users can choose Wide band 25KHz or Narrow band 12 50KHz at present working channel 15 VOX 1 VOX function frees your hand without pushing PTT button for transmission It uses voice to transmit when voice stops then transmitting stops automatically Users can use programmable software to ON...

Page 9: ...quelch will open If same channels but with different CTCSS DCS signaling for calling then squelch will not open only green light is on CTCSS DCS codes are listed below 67 0 94 8 131 8 171 3 203 5 69 3 97 4 136 5 173 8 206 5 71 9 100 0 141 3 177 3 210 7 82 5 114 8 159 8 189 9 233 6 85 4 118 8 162 2 192 8 241 8 79 7 110 9 156 7 186 2 229 1 77 0 107 2 151 4 183 5 225 7 74 4 103 5 146 2 179 9 218 1 88...

Page 10: ... D445I D506I D627I D731I D025I D065I D131I D172I D246I D306I D364I D446I D516I D631I D732I D026I D071I D132I D174I D251I D311I D365I D452I D523I D632I D734I D043I D114I D152I D225I D263I D332I D413I D464I D565I D664I D047I D115I D155I D226I D265I D343I D423I D465I D606I D703I D036I D074I D145I D223I D261I D331I D412I D462I D546I D662I D032I D073I D143I D212I D255I D325I D411I D455I D532I D654I D75...

Page 11: ...al radio management departments FCC ISED OFCOM ANFR BFTK Bundesnetzagentur To transmit on these frequencies you are required to have a license issued by them The detailed classification and the use of your two radios please contact the local government radio management departments Use of this radio outside the country where it was intended to be distributed is subject to government regulations and...

Page 12: ...ovakia SK Finland FI Sweden SE and United Kingdom UK For the warning information of the frequency restriction please refer to the package or manual section Disposal The crossed out wheeled bin symbol on your product literature or packaging reminds you that in the European Union all electrical and electronic products batteries and accumulators rechargeable batteries must be taken to designated coll...

Page 13: ...or and classified as General population uncontrolled Use RF Exposure Compliance and Control Guidelines and Operating Instructions To control your exposure and ensure compliance with the occupational controlled environment exposure limits always adhere to the following procedures Guidelines User awareness instructions should accompany the device when transferred to other users Do not use this devic...

Page 14: ... battery particularly when placing it inside a pocket purse or other container with metal objects Long transmission Phone Mode When placing or receiving a phone call hold your radio product as you would a wireless telephone Speak directly into the microphone Electromagnetic Interference Compatibility NOTE Nearly every electronic device is susceptible to electromagnetic interference EMI if inadequa...

Page 15: ...s of the vehicle when the air bag inflates To reduce risk Pull by the plug rather than the cord when disconnecting the charger Unplug the charger from the AC outlet before attempting any maintenance or cleaning Contact Retevis for assistance regarding repairs and service The adapter shall be installed near the equipment and shall be easily accessible Approved Accessories This radio meets the RF ex...

Page 16: ...honghaixin Science Technology Park No 12 Ganli 6th Road Buji Street Longgang District Shenzhen China E mail kam retevis com Facebook facebook com retevis Name Germany Retevis Technology GmbH Address Address Uetzenacker 29 38176 wendeburg EU Importer ...

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