AmateurLogic 158: Distortion, Field Day & SDRangel

AmateurLogic.TV Episode 158 is now available for download.

George’s Distortion Exploration. Tommy and the One Man Field Day Team. Mike discovers SDRangel software.



George Thomas, W5JDX, is co-host of AmateurLogic.TV, an original amateur radio video program hosted by George Thomas (W5JDX), Tommy Martin (N5ZNO), Peter Berrett (VK3PB), and Emile Diodene (KE5QKR). Contact him at [email protected].

One Response to “AmateurLogic 158: Distortion, Field Day & SDRangel”

  • Bill Mader, K8TE:

    Interesting episode. Thanks guys!

    I stuck with CW for 21 hours (lightning break/nap time) for all of FD again in 1E. The type of operating shown is fine for demonstrating what is possible. But, if one is attempting to make a lot of contacts, I would approach it much differently.

    First, use a headset and (for SSB) and a foot switch. That leaves both hands free to log. It also keeps out extraneous noise (boats, other hams who never stop talking, etc.). Using CW is like adding a 10-13 dB amplifier–a big boost! Use an external speaker in parallel with the headset for visitors and mentoring (Elmering). But, show them the right/best way to operate.

    BTW, there are no multipliers in FD. The number of sections doesn’t matter except for demonstrating your geographical coverage. I worked all States and all but two sections running 100 Watts to an OCF 80m dipole at 35 ft. A short and shiny antenna can work, a dipole up 30-40 ft. will make a huge improvement. Show that some time, perhaps using WSPRLite.

    For LiFePo batteries, terminal Voltage does not indicate capacity. Visit Battery University to get the low down on this and other battery types. What matters is the number of AH drawn (current vs. time) from the battery.

    While one FD contact proves it worked (WORK–WithOut Real Knowledge per K0BG), making many shows how effective one’s station is. In a real emergency, which is what FD is supposed to test, we would pass a lot of health and welfare traffic. FD is a great way to test our capabilities and practice what we learn as a member of ARES.

    73, Bill, K8TE

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