• -5V DC/DC converter
  • capacitor failures

• “Turn Off” fault - due to overheating of 13V regulator
  • Cured by
    • Reduce input voltage to 13.8V
    • Improve heatsinking of regulator IC to chassis

• connected to shack server via RS232
• shack server running Python netradio server.py to give TCP/IP network control
• laptop PC running Python netradio client.py to give user access
  • Available controls:

    gm4slv@laptop:~/Python/PythonProjects/netradio $ python2 client.py
    There are currently 1 radios connected.
    =================================
    Status of Radio 1 (IC-R75)
    
    Frequency : 391.000 kHz
    Mode: CW
    S-Meter: -113.0dBm
    1 : 0
    =================================
    
    Please choose a radio
    
    There are currently 1 radios connected.
    Radio 1 is IC-R75
    Choose a radio number from the list : 1
    
    The available commands are:
    lr   : List Radios
    sr   : Select the Radio to control
    gr   : Get currently selected Radio name
    gm   : Get Mode
    sm   : Set Mode
    gf   : Get Freq
    sf   : Set Freq
    gs   : Get S-meter
    gp   : Get Pre-amp
    pon  : Set Pre-amp On
    poff : Set Pre-amp Off
    gatt : Get Attn
    aton : Set Attn On
    atoff: Set Attn Off
    ga   : Get All (status of all radios)
    sync : Sync freq/mode on two radios
    log  : Setup background logging to file
    h    : Help (show this command list)
    q    : quit
    
    IC-R75 >

• audio via network using PicoPhone
  • running on shack laptop via Wine
  • running on Windows laptop /natively/

Remote control is achieved via a SSH connection to shack laptop to run the netradio client.py and the RX audio can be heard via PicoPhone.

Page created Wed May 25 00:06:01 2022 by John Pumford-Green

Page last updated: 06/03/25 06:49 GMT