QST for May 2010 arrived in Sydney today

Articles this month include

  • a report on the second Homebrew Challenge featuring inexpensive designs (think around $30) for a 50 W amplifier.
  • circularly polarized Yagi antennas for satellite communications
  • a homebrew a window feed through panel
  • explaining the differences bewteen a duplexer and a diplexer
  • a six band – 20 – 6 metres log periodic dipole array using a phasing line.
  • an Amp-Hour meter for portable ops to monitor battery discharge rate.
  • there’s also a review of some popular dual-lever keyer paddles and a couple of noise canceling headphones, and the Yaesu FT-1900R 2 meter transceiver. 

More info – including how to subscribe – here.

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