985 Workbench: 2024-12-09

My Week in Radio

  • Monitoring some technical discussions
    • tips on satellite repeaters, including listening duplex
    • some radios have talk-around feature, which I’ve only done accidentally when misconfiguring the radio to talk on the repeater output
  • FT Challenge over the weekend
    • lots of activity on FT4, FT8, and subbands outside the usual
    • found wsjtx-improved available on my Debian machine:
      • better colors, location labels, and filters
  • Learning obvious things about AllStar last week:
    • my node is simplex, so while the net is transmitting, I can’t throw any DTMF at the node to control it
    • minor delay resulted in lots of missed prefixes

News From Others

  • W8CRW, CR: setting up for 10m
  • KC3SCY, Luke: doing some good work on 10m
  • KC3SQI, Wayne: POTA and 10m
  • AF3Z, Jim:
    • worked some of Europe on CW
    • cleaning up radio stuff, workbench, dealing with excess hunks of wire

Questions

  • KC3TMZ, Matt: Looking to upgrade the coax run through a window. Should he get an MFJ passthrough or better recommendations?

    • a couple people have some homebrew panels like the MFJ
    • some have the MFJ panel
    • others suggest passing a barrel adapter through the wall
    • KC3WWC, John: there’s thin coax and flat coax for the purpose
  • KC3SQI, Wayne: The battery for the radio’s memory only lasts a couple weeks, so he runs a 12V wall wart to keep it powered, but also has a 35-amp 13.8V supply he wants to use. He isolates them with relays, but is there a solar controller way to switch. Blocking diodes? Recommendations?

    • WA3KFT, John: his 7300 doesn’t have that problem. He uses a 12V bus on the desk. His 12V bus is powered by AC power supply on one side, and a 12V battery on the other side. so there’s always power. A blocking diode would need to be 30Amp.
    • KC3RFG, Jim: The manual says power it a couple hours at least monthly to maintain that battery which holds clock and settings. Memories are on the SD card.

See also