Ad
related to: amateur radio grey linetemu.com has been visited by 1M+ users in the past month
- Top Sale Items
Daily must-haves
Special for you
- Where To Buy
Daily must-haves
Special for you
- Our Picks
Highly rated, low price
Team up, price down
- Store Locator
Team up, price down
Highly rated, low price
- Top Sale Items
Search results
Results from the WOW.Com Content Network
This time-difference puts the ionosphere into a unique intermediate state along the terminator, called the "grey line". [5] Amateur radio operators take advantage of conditions along the terminator to perform long-distance communications. Called "gray-line" or "grey-line" propagation, this signal path is a type of skywave propagation.
Sporadic E (abbreviated E s or SpE) is an uncommon form of radio propagation using a low level of the Earth's ionosphere that normally does not refract radio waves above about 15 MHz. Sporadic E propagation reflects signals off relatively small ionization patches in the lower E region located at altitudes of about 95~120 km (50~75 miles).
The 80 meter or 3.5 MHz band is a span of radio frequencies allocated for amateur use, from 3.5–4.0 MHz in North and South America (IARU and ITU Region 2); generally 3.5–3.8 MHz in Europe, Africa, and northern Asia (Region 1); and 3.5–3.9 MHz in south and east Asia and the eastern Pacific (Region 3).
Drake TR-4, W-4, MS-4 circa 1971. The R. L. Drake Company is a manufacturer of electronic communications equipment located in Springboro, Ohio.It is also known for its line of equipment for amateur radio and shortwave listening, built in the 1950s through the 1980s.
Radio communications, prior to the advent of landlines and satellites as communication paths and relays, was always subject to unpredictable fade outs caused by weather conditions, practical limits on available emission power at the transmitter, radio frequency of the transmission, type of emission, type of transmitting antenna, signal waveform characteristics, modulation scheme in use ...
Amateur radio operator's "Radio shack" with vintage gear Vintage amateur radio is a subset of amateur radio hobby where enthusiasts collect, restore, preserve, build, and operate amateur radio equipment from bygone years, such as those using vacuum tube technology.
The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.
An autopatch, sometimes called a phone patch, is a feature of an amateur radio (or other type of two-way radio) repeater or base station to access an outgoing telephone connection. [1] Users with a transceiver capable of producing touch tones ( DTMF signals) can make a telephone call , typically limited by settings in the autopatch module to be ...
Ad
related to: amateur radio grey linetemu.com has been visited by 1M+ users in the past month