Davis K3DHJ (@jefcon1) 's Twitter Profile
Davis K3DHJ

@jefcon1

Official X account of @jefcon1 • Delmarva native • Apple Consultant • da boss at @jefconhq • tech • sci-fi • history • music • #hamradio • callsign K3DHJ

ID: 24124676

linkhttp://about.me/JEFCON-1 calendar_today13-03-2009 04:08:23

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RossRadio (@cqcqcqdx) 's Twitter Profile Photo

Put Your Aerial Underground. From: February 1935 Short Wave Craft. Here's a clever way to try out an underground aerial for short-wave reception, the wire being placed inside a length of garden hose and buried 2 feet underground. The noise-to-signal ratio was much improved.

Put Your Aerial Underground.
From: February 1935 Short Wave Craft.
Here's a clever way to try out an underground aerial for short-wave reception, the wire being placed inside a length of garden hose and buried 2 feet underground. The  noise-to-signal ratio was much improved.
ARISS - Amateur Radio on the ISS (@ariss_intl) 's Twitter Profile Photo

The ARISS repeaters remain active for ham radio voice and APRS activities. Watch for 3 scheduled voice contacts with the crew over the next 2 days.

The ARISS repeaters remain active for ham radio voice and APRS activities.
Watch for 3 scheduled voice contacts with the crew over the next 2 days.
ARISS - Amateur Radio on the ISS (@ariss_intl) 's Twitter Profile Photo

1 hour until contact with Ethiopia! Learners at the Ethiopian Space Science Society, Addis Ababa will talk via ham radio with Kimiya Yui live from the International Space Station. Scheduled today at 08:23 UTC | 4:23 AM ET | 11:23 AM EAT via VK4KHZ telebridge. Listen on 145.800 MHz.

1 hour until contact with Ethiopia!

Learners at the Ethiopian Space Science Society, Addis Ababa will talk via ham radio with Kimiya Yui live from the <a href="/Space_Station/">International Space Station</a>.

Scheduled today at 08:23 UTC | 4:23 AM ET | 11:23 AM EAT via VK4KHZ telebridge.

Listen on 145.800 MHz.
K3RRR (@k3tripler) 's Twitter Profile Photo

Anybody else remember these good old days? "In the 1960s, a kid playing with a toy whistle from a Cap’n Crunch cereal made an odd discovery. The whistle produced a 2600-hertz tone, the same sound used by AT&T to control its phone network. That unlocked a loophole in the system,

Anybody else remember these good old days?

"In the 1960s, a kid playing with a toy whistle from a Cap’n Crunch cereal made an odd discovery. The whistle produced a 2600-hertz tone, the same sound used by AT&amp;T to control its phone network. That unlocked a loophole in the system,
K3RRR (@k3tripler) 's Twitter Profile Photo

For the first time in its 25-year history, the ISS has every visiting vehicle port filled at once. NASA has confirmed that all eight docking ports on the current configuration of the International Space Station are simultaneously occupied, marking a logistical milestone for the

For the first time in its 25-year history, the ISS has every visiting vehicle port filled at once.

NASA has confirmed that all eight docking ports on the current configuration of the International Space Station are simultaneously occupied, marking a logistical milestone for the
K3RRR (@k3tripler) 's Twitter Profile Photo

Ever wonder how we talk with our spacecraft at the Moon, Mars, and beyond? We have an array of antennas around the Earth that track them 24/7—and you can follow along as they stay in touch. Watch our Deep Space Network in real time: go.nasa.gov/44C0Wlg

Ever wonder how we talk with our spacecraft at the Moon, Mars, and beyond? We have an array of antennas around the Earth that track them 24/7—and you can follow along as they stay in touch.

Watch our Deep Space Network in real time: go.nasa.gov/44C0Wlg