Observations of electromagnetic (radio) signals on very low frequencies, 0 KHz - 10 KHz. Observed 10 may 2008, approx. 23.00 hour on 4,5. KHz: next to the original radio resonance of 4,5 KHz there is another resonance (spectrum on approx. 10 KHz), that comes in and fades away after 30 minutes....

TS850

This video of 30-meter operation was made at a location where the BPL system exceeded the emissions limits. In this case, the 35 dB notching was not adequate to protect Amateur Radio. Generation 2 BPL systems can operate compatibly near Amateur Radio operation, but they must be adjusted and...

We’re back with the Active Cantenna to finally do some range testing. Thanks to Amateur Radio and a couple of video cameras, we put you right in the action. Ride “Shotgun� with Jim as we test WiFi’s advertised 3002 range. We were pleasantly surprised…. There are more great web sites...

We’re back with the first episode from our new set. This month Jim runs a few benchmarks to determine if the Apple MacIntel is ready for prime time. IPTV show producers get ready… George hacks the Radio Shack Lavalier Microphone (#33-3013) to add phantom power and better performance....

Since 1923, NIST radio station WWV has provided round-the-clock shortwave broadcasts of time and frequency signals. WWV\'s audio signal is also offered by telephone: dial (303) 499-7111 (not toll-free). A sister station, WWVH, was established in 1948 in Hawaii, and its signal can be heard by...

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Some 30 years ago this picture was received from Venezuela on early SSTV. Then no home computers could handle the speed needed to display the picture, more...no re transmitted using modern software MMSSTV

Slow Scan TV using my Yaesu FT-847 on 14.230Mhz (20 Meter Band) Although we can now send pictures via more...e-mail, What Fun it is to send and receive them via Radio with the Only thing between you and the other person is the Air we breath!! :-) SSTV is a method of Sending and Receiving...

Training film on the BC-1306, SCR-694 field radio. Part 2 of 3