The May/June issue of QEX, ARRL’s bimonthly magazine for experimenters, is off the press and in the mail!
In this issue . . .
Michael Knitter, DG5MK, describes a complex-impedance analyzer that uses a heterodyning technique and high resolution ADCs to get good accuracy at low cost.
Robert H. Sternowski, WBØLBI, uncovers old measurements, which show that vertically and horizontally polarized noise can differ by tens of decibels in the lower HF bands.
Paulo Renato F. Ferreira, PY3PR, updates the Octopus V/I curve tracer by providing selectable scanning voltages for testing.
Maynard A. Wright, W6PAP, provides Octave software for computing the performance of transmission lines having a complex characteristic impedance.
Riccardo Gionetti, IØFDH, describes an automatic tracking filter for a DDS generator.
Euclides Lourenço Chuma, PY2EAJ, describes a modern RF power meter with accuracy that rivals the best commercial RF power meters.
The 40/80/160 Meter Coil-loaded Inverted V Dipole Antenna See all details: Link Read more
HF Mobile Antenna Covers 80-6 Meters with 4 1/2 foot mobile or 10 foot fixed operation telescoping whip. Continuously adjustable loading coil is 36 in... Read more
RFinder now includes the ability to make jamming reports. This is already available in RFinder Android and should be available on iOS devices by Dayto... Read more
In December, Joe Taylor, K1JT, released the latest version (1.7) of his WSJT-X software suite, designed to facilitate basic Amateur Radio communicatio... Read more
JT DX JT65 – JT9 – T10 – FT8 – WSPR Guides JTDX_User_Manual_EN_2018_01_08.pdf – (English language by VK7YUM with... Read more
FT8 is exploding! 1#popular HamRadio digital mode In this episode of the No Nonsense Amateur Radio Podcast, Tom, KB5RF, and I explore... Read more
Meet the Raspberry Pi” is the topic of the new (February 28) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! Sponsored by DX... Read more
FT-891 HF+50Mhz ALL MODE MOBILE TRANSCEIVER The FT-891 HF All Mode Mobile Transceiver once again continues Yaesu‘s legacy for legendary receiver... Read more
Jim, W6LG looks at http://www.sherweng.com/table.html website with extensive detail about receiver performance. Read more