Sporadic E (abbreviated Es or SpE) is an uncommon form of radio propagation using a low level of the Earth's ionosphere that normally does not refract...

infinite family of groups Sporadic disease, any of several diseases Sporadic E propagation, an unusual form of radio propagation occasionally allowing long-distance...

sporadic E propagation enables long-distance contacts spanning up to 2,500 kilometres (1,600 mi) for single-hop propagation. Multiple-hop sporadic E propagation...

to only cover a relatively confined service area, the sporadic long-distance signal propagation was seen as a nuisance, especially by station management...

many FM operators.[citation needed] Another form of VHF propagation is called Sporadic E propagation. This is a phenomenon whereby radio signals are reflected...

result of skywave propagation, a signal from a distant AM broadcasting station, a shortwave station, or – during sporadic E propagation conditions (principally...

radio-aurora is followed by Auroral-E, which resembles both propagation types in some ways. Sporadic E (Es) propagation occurs on HF and VHF bands. It must...

offers useful short to medium range groundwave propagation, day or night. Due to Sporadic E propagation during the late spring and most of the summer,...

The phenomenon is rare compared to other forms of propagation (such as sporadic E propagation, or E-skip) but can reflect signals thousands of miles beyond...

propagation mechanisms via the F2 ionospheric layer normally seen at high frequency (HF) which occasionally appear in 6 meters. However, sporadic E propagation...

English, a 1968 book by Noam Chomsky and Morris Halle SpE, abbreviation for Sporadic E propagation Spe (planet), 14 Andromedae b Stanford prison experiment...

allocations. One area of concern was the effects of tropospheric and Sporadic E propagation, which at times reflected station signals over great distances,...

distance possibilities. Sporadic E propagation can bring in signals from a hundred to many thousands of miles away. Sporadic E on 10 meters is mainly a...

This may have been to reduce co-channel interference caused by Sporadic E propagation and other atmospheric effects, which occur more often at these frequencies...

50 MHz and rarely up to 450 MHz. Sporadic-E events may last for just a few minutes to many hours. Sporadic E propagation makes VHF-operating by radio amateurs...

Experiment - space weather - spicule (solar physics) - SPLAT! - sporadic E propagation - spray (solar physics) - spread spectrum - stratosphere - substorm...

may be impossible to use skywave at all, except during periods of Sporadic-E propagation (from late spring through mid-summer). Skip contributes to noise...

Es-Layer that occasionally may appear in summer may produce such Sporadic E propagation. A method of decreasing the skip zone is by decreasing the frequency...

allocations. One area of concern was the effects of tropospheric and Sporadic E propagation, which at times reflected station signals over great distances,...

indicators of Sporadic E ionospheric propagation. According to IARU bandplans, the following 28 MHz frequencies are allocated to radio propagation beacons:...

Yahiko started on December 1, 1958, on VHF channel 2. To prevent Sporadic E propagation from the Utsukushigahara transmitter in Nagano Prefecture, the station...

The propagation of grapevines is an important consideration in commercial viticulture and winemaking. Grapevines, most of which belong to the Vitis vinifera...

degrades radio propagation. The degradation mainly consists of a reduction of the maximum usable frequency (MUF) by as much as 50%. Sometimes the E-layer may...

an infected person may also result in spread. There is no evidence that sporadic CJD can spread among people via normal contact or blood transfusions, although...

transmitter) have 10 kilowatts output power and is received in Europe via sporadic E propagation. The station operated in 2015 and 2016 before being overrun by Libyan...

summer months due to interference from foreign transmitters due to Sporadic E propagation thereby giving poor quality signals. Ambitalk addresses this interference...

down-conversion Spontaneous process Spontaneous symmetry breaking Sporadic E propagation Spouting can Spray nozzle Spring pendulum Spring scale Springboard...

versatility[3]. In Europe, sporadic E permits continent-wide communication, and while the band doesn't typically support the same propagation mechanisms seen in...

absorption and reflection of the E-layer. Fellow of the Institution of Engineering and Technology (1975) Sporadic E propagation Journal of Atmospheric and Terrestrial...

entertainment, can be heard sporadically and in various modes on the shortwave bands. Pirate broadcasters take advantage of the better propagation characteristics...