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Caution 

Although this product uses certain isolation, your 

computer/radio/other terminal may still be damaged. 

Please ground the equipment. 

 

Caution 

In order to reduce the development cost and ensure the health of the 

owner, this product has been using lead-free circuit boards, lead-free 

solder,  rohs-compliant  washing  liquid  and  inexpensive  connectors 

since  January  2018.  This  product  complies  with  RoHs  standards.  If 

you are located in an EU member state or other countries, please do 

not  hesitate  to  contact  me  to  produce  customized  products  that 

meet your relevant standards. 

 

Caution 

Venus Info Tech. is not responsible for equipment damage caused by 

this product. 

 

Caution 

The  use  of  this  product  requires  a  certain  degree  of  electrical 

operation, as well as the English reading ability of related software. 

Because this product is very cheap, it does not provide all software 

Summary of Contents for Litelink

Page 1: ...Litelink Radio audio digi interface UUSER MANUAL Venus Information Technology Co Ltd...

Page 2: ...ve connectors since January 2018 This product complies with RoHs standards If you are located in an EU member state or other countries please do not hesitate to contact me to produce customized produc...

Page 3: ...introduction Lite link is a mini version of the radio audio interface Unlike most interface on the market the lite link has a PCB size of only 5 5cm The following is the difference between litelink an...

Page 4: ...interface for daily CW use as well as a set of TTL write frequency interfaces a set of DIY radio interfaces What can I do with lite link 1 Connect to the U V radio to run software such as ECHOLINK APR...

Page 5: ...ter Litelink PCB 2 1 3 4 5 6 7 8 9 Wiring instructions 1 Type B USB is used to connect to a computer or connect to other mobile terminals via OTG adapter cable 2 XH2 54TTL write frequency CIV interfac...

Page 6: ...3 5mm jack for connecting the radio s straight key for computer transmission 7 4 ring stereo audio jack for connecting computers and mobile phones with this interface or other terminals 8 XH2 54 custo...

Page 7: ...Lite link schematics...

Page 8: ...ADS SparkFun Connectors 1 JP3 M04LONGPADS 1X04_LONGPADS SparkFun Connectors 1 OK1 CW PC817 DIL04 optocoupler 1 OK4 PTT PC817 DIL04 optocoupler 1 R1 330R R US_M0805 M0805 resistor 1 R2 560R R US_M0805...

Page 9: ...d before packaging The test equipment is FT 8900R power 5W using GP antenna to test the USB and audio parts of litelink using ECHOLINK software In the development process the ICOM7100 long line antenn...

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