LRR300 -ECHOLINK INTERFACE CONTROLLER

VU3GEK-KJ6LRR, ganesan4u@hotmail.com


 

Around the world in the 90’s Amateur Radio Operators began using a communication method that utilizes the Internet. Echo Link is software which allows Amateur Radio stations to communicate with one another over the Internet, using voice-over-IP (VoIP) technology. The program enables worldwide connections to be made between stations, from computer to station, or from computer to computer. If you are expecting to set up Echo Link in "sysop" mode, you will need a special interface device which connects your radio equipment to your computer. This device allows the computer to control the PTT function of your transceiver.
           
For use in Sysop mode, your transceiver connects to a hardware interface, which in turn connects to your computer's sound card and serial port. Audio from the receiver goes to the interface board or your sound card's line-in jack, and audio from the sound card's speaker out (or line out) goes through a gain control to your transmitter's microphone input. If your rig has a line-in connection, sometimes available on a back-panel accessory jack, you can usually connect the sound card output directly to line-in.

Features & specification

q  100% galvanic isolation Separation using audio transformers.
q  Tone (Bass & Treble) & AGC Controls.
q  Adjustable receiver and transmitter audio levels.
q  COR (Positive or Negative logic selectable).
q  No relays Uses Electronic Switches.
q  RS232 signals DB9 Connectors, PSK31 digital modes.
q  Header Jumper for portables Handy.
q  All audio and control I/O brought out to 3.5mm Stereo jacks for easy interface.
q  13.7cm x 8.7cm, Single Side Board (LRR-300)/Double Side PTH Board (LRR-301).
q  Available as a DIY kit or fully assembled high quality components for reliable operation.







Use R31 and D3 for BAYCOM use only.







UNDER TESTING NEEDs FIELD TEST
SEE THIS BLOG FOR UPDATE

N.Ganesan
KJ6LRR
09363105352
COIMBATORE
TAMIL NADU
INDIA

2 comments:

  1. Dear
    Ganeshan

    I got DDS1 PCB with AD9851 IC from you at HFI 2012 ,
    I need circuit diagram fot this DDs1 board and I also got Echolink Interface PCB
    from you I also need circuit diagram for it , I search on your homebrewercorner.blogspot.in but circuit is not available on web
    Please send me circuit for this two pcb
    I send email on your ID ganeshan4u@hotmail.com
    if any change in your Email ID please let me know
    Thanks

    73

    de

    VU2KYZ
    SURAT (GUJARAT)
    vu2kyz@yahoo.com

    ReplyDelete
  2. i see com port on this.. now most of pcs have usb only. do u have any updation to this for usb?

    ReplyDelete