The sun is blank–no sunspots. This means solar activity is very low. Credit: SDO/HMI
NO FIREWORKS ON THE 4TH OF JULY: Sunspots vanished almost two weeks ago and, as a result, solar activity is very low. NOAA forecasters say there is no more than a 1% chance of strong flares on the 4th of July. Solar flare alerts: text orvoice
AURORAS AND NOCTILUCENT CLOUDS: Who needs sunspots? Despite a sudden lull in solar activity, July began with a beautiful display of color over Calgary, Alberta. Harlan Thomas photographed the sudden apparition of green auroras and silver noctilucent clouds
Via : http://spaceweather.com/
Antennas
80M Antenna with HOA Constraints
Welcome to the 400th Ask Dave video! Ken, VE7ZY, is having trouble with an 80m dipole mounted very closely to the roof flashing. He is seeking other a... Read more
Can I Put One End of a Dipole Next to my VHF Antenna?
Nick, KC3PWJ, has a flagpole and also a pole that holds up his VHF/UHF discone. He’d like to string a 20m dipole between the two poles, but is w... Read more
Wideband Antennas for SDR Radios
Flip, W4FLP, asked about options for wideband antennas for the popular RSP-DX software defined radio from SDRPlay. We cover three that should work fin... Read more
Bushcomm Horizon Multi-Band Loop Antennas LOOP-20
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Dual Band Moxon Antenna 10m/6m
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CompacTenna VHF/UHF Stealth But EFFECTIVE antenna, Review and On-Air Test
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CHA TDL (TACTICAL DELTA LOOP)
The Tactical Delta Loop antenna (CHA TDL), is a portable High Frequency (HF) antenna specially designed for transportability, quick setup, a... Read more
