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Rev. 01

CTK38 User Manual

 

 

 

5

 

 

R

EAR 

P

ANEL

 

 

7)  CONNECTOR:  antenna   (N-F  type connector). 

 

8)  CONNECTOR:  modulation audio input   (XLR3-F  type connector). 

 

The audio input line is transformer balanced and floating. 

 

 pin 1 = ground;    

 pin 2 = AF-a input;    

 pin 3 = AF-b input. 

 

9) 

CONNECTOR:  transmission activation  (Push To Talk)  (mono ¼” 

- 6.3 mm, standard jack 

type). 

 

The transmission is allowed when the central pin  (hot)  is connected to external ring  
(ground). 

 

Note #1

:  in the standard version of CST 38, when the PTT plug is not inserted, the carrier 

is still activated. 

 

Instead, when the CST 38 is provided with the optional VOX 38 

 Voice Activated Circuit 

board, the carrier is activated automatically only when the input audio-signal reaches the 
activation-threshold  pre-set  in  the  VOX  38  board.    However,  the  external  PTT  circuit  (if 
connected)  can  override  the  VOX  38  device  and  force  the  CST  38  in  continuous 
transmission. 

 

10)  CONNECTOR:  dc power input   (10.5 ÷ 16 Vdc). 

              (

 pin 1 = +Vdc,   

 pin 2 = ground). 

 

 

 

Summary of Contents for CTK38

Page 1: ...CTK38 User Manual VHF MICROEAR DESKTOP TRANSMITTER SN ________________ Rev 01 Date 26 February 2018...

Page 2: ...Rev 01 CTK38 User Manual 1...

Page 3: ...and as audio level in any case limited because of the very small size of receiver Higher power transmitter are available to further increase the coverage area cell it is also possible to link in paral...

Page 4: ...Clean the apparatus only with dry cloths do not use liquids Report the serial number and the purchasing date in front of the manual It is needed to have proper replacement parts or accessories from th...

Page 5: ...ine 2 LED INDICATION peak indicator limiter on status yellow Led 3 ADJUSTMENT audio input sensitivity With the optimum sensitivity adjustment the yellow Led 2 must flash under modulation peaks 4 SELEC...

Page 6: ...pin hot is connected to external ring ground Note 1 in the standard version of CST 38 when the PTT plug is not inserted the carrier is still activated Instead when the CST 38 is provided with the opt...

Page 7: ...on audio signal reaches the pre set threshold the transmitter is activated When the modulating audio signal is not more present the carrier is switched off again after a pre set delay time Consequentl...

Page 8: ...tor The transmission is allowed when the central pin hot is connected to external ring ground See Note 1 on front page Modulation FM peak deviation 5 kHz Mod audio input transformer balanced floating...

Page 9: ...CTK38 User Manual Rev 01 8...

Page 10: ...dagli altri rifiuti La raccolta differenziata della presente apparecchiatura giunta a fine vita e organizzata e gestita dal produttore L utente che vorr disfarsi della presente apparecchiatura dovr q...

Page 11: ...CTK38 User Manual Rev 01 10...

Page 12: ...Rev 01 CTK38 User Manual 11 Via Spin 156 I 36060 Romano d Ezzelino Italy Tel 39 0424 382605 Fax 39 0424 382733 www wisycom com e mail sales wisycom com...

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