Foundations Of Amateur Radio

Foundations of Amateur Radio For quite some time I have operated a WSPR or Weak Signal Propagation Reporter beacon on the 10m band. If you're not familiar with it, I've dialled the power right down to 10 dBm, or 10 milliwatts. You'd think that this would be a fool's errand, but it was heard 13,945 kilometres away. Of late the reports have been far and few between, despite the 10m band being quite active. Encouraged by a friend playing on 15m, I made the decision to change bands. At the moment this is not a trivial process, though at some point in the not too distant future, hopefully before I need a Zimmer Frame, I intend to erect a multi-band Hustler 6-BTV antenna that has been in storage for several years. Before that occurs, since it involves all kinds of shenanigans, I went for a simpler option, replace the 40m helical whip antenna with a 15m helical whip, something I can do without climbing on the roof. In case you're wondering, using an SG-237 antenna coupler, the 40m antenna tunes fine on 10m, but n