Since Dirac's paper, several systematic monopole searches have been performed.

Since these are no larger than the size of the antenna itself, the combination of whip and radio often functions more as an asymmetrical dipole antenna than as a monopole.

Since 31 December 2003, the system has been closed to new users, at that time, it covered 100 % of the Spanish population, but now some antennas have been given to GSM operators.

Since the wavelengths being observed with these types of antennas are so long, the " reflector " surfaces can be constructed from coarse wire mesh such as chicken wire.

Since the size of a directional antenna depends on it being large compared to the wavelength, very directional antennas of this sort are mainly feasible at UHF and microwave frequencies.

Since the length of the waves used with crystal radios is very long ( AM broadcast band waves are 182-566 m or 597 – 1857 ft. long ) the antenna is made as long as possible, out of a long wire, in contrast to the whip antennas or ferrite loopstick antennas used in modern radios.

Since nodes using directional antennas are nearly invisible to nodes that are not positioned in the direction the antenna is aimed at, directional antennas should be used only for very small networks ( e. g., dedicated point-to-point connections ).

Since the basis of the problem is the information-carrying capacity of the single signal-input channel provided by one antenna, the only solution is to use additional channels fed by additional antennas.

Since a greater number of highly directive antennas can be placed in a given area than less directive antennas, the net result is higher reuse of the spectrum, and higher density of users, as compared to lower frequencies.

Since the 1970s this design has been superseded by shrouded parabolic dish antennas, which can achieve equally good sidelobe performance with a lighter more compact construction.

Since numerous directional antennas were set up, all connections of the wooden upper building had to be manufactured without metal.

Since the picocell's antennas within the aircraft would be very close to the passengers and inside the aircraft's metal shell both the picocell's and the phones ' output power could be reduced to very low levels reducing the chance for interference.

Since 1970 the roof has hosted a 30 meter tall tapered steel mast, used as support for three FM antennas ; 101. 9 KQXT ( then known as KCOR-FM ), 102. 7 KJXK ( then KTFM ), and 104. 5 KZEP ( then KITE-FM ).

Since short antennas have very low radiation resistance, overall antenna efficiency is often limited to less than 10 %.

Since the directional response of small loop antennas includes a sharp null in the direction normal to the plane of the loop, they are used in radio direction finding at longer wavelengths.

Since the peak RF current normally flows from one stator to the other without going through wiper contacts, butterfly capacitors can handle large resonance RF currents, e. g. in magnetic loop antennas.

Since 1984 the CCIR have standardised the nomenclature for this family of curtain antennas as follows:

Since the Weimar Republic lacked the quantity of raw materials available to the United States and Great Britain, it had to rely on the proficiency of a skilled labor force and an ability to export innovative and high quality goods.

Since 1982, however, the arguments have been easier to make, because lawyers have been able to cite the relevant sections of the constitution rather than rely upon legal abstraction.

Since reunification, German authorities rely on a micro census.

Since many insurgents rely on the population for recruits, food, shelter, financing, and other materials, the counter-insurgent force must focus its efforts on providing physical and economic security for that population and defending it against insurgent attacks and propaganda.

Since members of the type I and type II cytokine receptor families possess no catalytic kinase activity, they rely on the JAK family of tyrosine kinases to phosphorylate and activate downstream proteins involved in their signal transduction pathways.

Since lyotropic liquid crystals rely on a subtle balance of intermolecular interactions, it is more difficult to analyze their structures and properties than those of thermotropic liquid crystals.

Since chemistry and nanotechnology rely on understanding quantum systems, and such systems are impossible to simulate in an efficient manner classically, many believe quantum simulation will be one of the most important applications of quantum computing.

Since the constitution of 1978 came into effect, there have not been any coalition governments, even if the party with the largest number of seats has failed to obtained absolute majority, though in such cases the party in government has had to rely on the support of minority parties to gain confidence and to approve the State's budgets.

Since the last trick determines who collects the winning, the players need to rely on luck and strategies to save the strong hand to the last trick.

Since tribunes were technically not magistrates, they had no magisterial powers (" major powers " or maior potestas ), and thus could not rely on such powers to veto.

She therefore told him: " Since you rely on your forces, we will show you ours ".

Since a clear archetype for determining guilt does not exist, the criminal justice system must rely on rulings handed down by juries.

Since many of these fish live in regions where there is no natural illumination, they cannot rely solely on their eyesight for locating prey and mates and avoiding predators ; deep-sea fish have evolved appropriately to the extreme sub-photic region in which they live.

Since the original broadcast did not rely on commercial advertising revenue, it was believed to be more objective and long term oriented.

Since many practical designs rely on a hardware source as an input, it will be useful to at least check that the source is still operating.

Since forecasts are short — typically a few days or a week — such models do not usually contain an ocean model but rely on imposed SSTs.

Since the invention of digital technology and audio sampling, many low budget films have been able to rely on digital samples to imitate the sound of live instruments, and many scores are created and performed wholly by the composers themselves, by using sophisticated music composition software.

Since anti-tank mines rely on a concentrated explosion to destroy a tank, they are useless when turned upside-down ; as the tank runs over the mine, it will expend its blast down instead of upwards, causing insignificant damage, if any.

Since the deep deindustrialization of the 1970s, the economy has come to rely more on the services sector.

Since most of the military power within the Republic's territory was not actually controlled by the Republic, but as depicted in Attack of the Clones, by member planets such as Naboo or organizations such as the Techno Union and the Intergalactic Banking Clan, the ability of the Senate to enforce its decrees was severely limited, and it was forced to rely on the Jedi.

Since modern bridesmaids, unlike their historical counterparts, can no longer rely on having their clothes and travel expenses paid for by the bride's family, and are sometimes even told they must pay for parties that the bride wants to have before the wedding, it has become customary for the bride to present the bridesmaids with gifts as a sign of gratitude for the support and financial commitment that comes with their roles.

Since innovative companies no longer rely heavily on software sales, proprietary software has become less of a necessity.

Since the Pygmies rely on the forest for their physical as well as cultural survival, as these forests disappear, so do the Pygmy.

Since the 1. 0 release ( 2004-12-25 ) the API of xine-lib is considered stable and several applications and players rely on it.