KC9ZO's blog

Original LDG 4:1 balun used with gutter antenna failed. SWR went to 7:1 and higher. Finally got out to assess and found corrosion on the ground lead of the balun. Dug out another LDG unit that was a 4:1 UNUN and it worked great. SWR of 1.06 across the 17M band. Running 100mW.

Modified the Raspberry Case to allow plugging the module with extenders off the Pi.

. Running Raspberry Pi 3 with a TAPR Versatile WSPR module on 17M.
Antenna is my gutter and downspouts on my house facing east.