October 4 marks the 61st anniversary of the launch by the Soviet Union of Sputnik 1, Earth’s first artificial satellite. The Soviets heralded the launch as a national triumph, and the space race between the USSR and the US began.
Sputnik 1 was a 58-centimeter diameter, polished aluminum sphere sprouting four antennas and transmitting a 1 W signal on 20.005 and 40.002 MHz, putting it within the range of nearly any radio amateur. Orbiting the planet about once every 96 minutes, Sputnik 1 could be seen from Earth. Following the launch, the US National Institute of Standards and Technology’s HF radio station WWV even halted its nighttime 20 MHz transmissions to avoid interfering with the satellite’s signal.
Scientists studying it gained information about such things as the density of the upper atmosphere, deduced from orbital drag. The propagation of its signals also helped to better understand the ionosphere. The US launched its first artificial Earth satellite, Explorer 1, on January 31, 1958.
“After several attempts to build a multiband C-Pole I finally ended up with the Multiband H-Pole. C-Poles for different frequencies on one pole must be fed with separate feedlines over separate current baluns. In a first attempt I fed... Read more
Full Title: Warning: Amateur and Personal Radio Services Licensees and Operators May Not Use Radio Equipment to Commit or Facilitate Criminal Act... Read more
NCDXF is pleased to announce a $50,000 grant to the Intrepid-DX Group to activate South Sandwich and South Georgia Islands in 2016.
“NCDXF is pleased to announce a $50,000 grant to the Intrepid-DX Group to activate South Sandwich and South Georgia Islands in 2016.“ Souc... Read more
N0w you can listen your QSO in CQ WW SSB 2015 Visit and try: Real Sample: K3LR 160m SSB : QSO found but no audio available 80m SSB : QSO found... Read more
With just 6 months to go until Hamvention® debuts at its new Greene County Fairgrounds and Event Center venue in Xenia, Ohio, May 19-21, General Chair... Read more
ARRL and the Orlando Amateur Radio Club (OARC) have announced that the ARRL National Convention and Orlando HamCation® — which was to host the convent... Read more
WL2XUP is an FCC Part 5 Experimental station operated by Lin Holcomb, NI4Y, in Georgia. It’s licensed to operate with up to 400 W effective radiated p... Read more
“Chinese radios have come a long way, many have impressive feature lists, but those features seem to be stuck behind programming or poorly imple... Read more
“We are sorry to announce that Icom has discontinued the IC-7851 HF All Band Transceiver. Since its launch six years ago, the IC-7851 has been I... Read more