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Topic: Radiotelephone


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  Radiotelephone - Wikipedia, the free encyclopedia
Radiotelephones may operate at any frequency where they are licensed to do so, though typically they are used in the various bands between 60 and 900MHz.
For example, airband radiotelephones used for air to ground communication between pilots and controllers operates in the VHF band from 118.0 to 136.975 MHz, using amplitude modulation.
Radiotelephone receivers are usually designed to a very high standard, and are usually of the double-conversion superhet design.
en.wikipedia.org /wiki/Radiotelephone   (1181 words)

  
 Mobile Terminal with Rotating Symbol Keypad and Multidirectional Symbol Input   (Site not responding. Last check: 2007-11-07)
Inaccessibility of the radiotelephone keypad itself in some regimes of work of such radiotelephones is a principal drawback since this decreases functionality of the working area, because it is more convenient for the user to use same input device in all regimes of the radiotelephone’s operation.
Display of radiotelephone QCP 3035 has form similar to rectangular with longer sides oriented along longer sides of the radiotelephone what provides a bigger square of display, so more information can be presented in a time; information on the display is displayed only in “portrait” format.
The display 2 of the radiotelephone is fabricated as big as possible for increasing comfort of work with the radiotelephone as a data terminal and has elongated form with apparent longer and shorter sides.
www.vitgn.com /mobile_terminal.htm   (2207 words)

  
 FCC - General Radiotelephone Operator License (PG)   (Site not responding. Last check: 2007-11-07)
A PG is required to adjust, maintain, or internally repair FCC licensed radiotelephone transmitters in the aviation, maritime, and international fixed public radio services.
The General Radiotelephone Operator Permits are issued for the holder's lifetime.
Submit FCC Form 605 and 159 (fee processing form) along with the appropriate Proof of Passing Certificate(s) for the requisite written and/or telegraphy examination element(s) to apply for any commercial operator license or endorsement requiring a written and/or telegraphy examination.
wireless.fcc.gov /commoperators/pg.html   (319 words)

  
 US CODE: Title 33,1205. Radiotelephone capability; maintenance; restoration; consequences of loss: navigation of vessel   (Site not responding. Last check: 2007-11-07)
Whenever radiotelephone capability is required by this chapter, a vessel’s radiotelephone equipment shall be maintained in effective operating condition.
If the radiotelephone equipment carried aboard a vessel ceases to operate, the master shall exercise due diligence to restore it or cause it to be restored to effective operating condition at the earliest practicable time.
The failure of a vessel’s radiotelephone equipment shall not, in itself, constitute a violation of this chapter, nor shall it obligate the master of any vessel to moor or anchor his vessel; however, the loss of radiotelephone capability shall be given consideration in the navigation of the vessel.
straylight.law.cornell.edu /uscode/uscode33/usc_sec_33_00001205----000-.html   (150 words)

  
 World Intellectual Property Organization   (Site not responding. Last check: 2007-11-07)
Satellite radiotelephone communications systems and methods generally employ at least one space-based component, such as one or more satellites that are configured to wirelessly communicate with a plurality of satellite radiotelephones.
An ancillary terrestrial network is configured to terrestrially reuse at least one of the ancillary radiotelephone frequencies that is used in a satellite cell in the satellite footprint, outside the cell and in some embodiments separated therefrom by a spatial guardband.
At least one of the satellite radiotelephone frequencies that is assigned to a given satellite cell in the satellite footprint is terrestrially reused outside the given satellite cell.
www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=05/18131.050224&ELEMENT_SET=DECL   (11309 words)

  
 Radiotelephone system, particularly for motor vehicles - Patent 4731811
So far, a radiotelephone installed in a motor vehicle is generally designed as a simple means of oral communication that resorts, for its use, to handling of a set provided with sending and receiving acoustic cells and a keyboard for dialing the numbers.
This signal is switched by unit 41 either to radiotelephone 12 by connection 52 or to delta modulator 8 by connection 55.
The signal carried by connection 57 comes from the tuner of car radio 9 and is sent, depending on whether or not a signal is present on connection 60, by unit 43, to the amplifier of car radio 9 by connection 61.
www.freepatentsonline.com /4731811.html   (5534 words)

  
 [No title]
Radiotelephone by Richard Perez When you move out beyond the power lines, you leave the telephone lines behind also.
Radiotelephone is one solution to communication beyond the lines.
A good alternative to radiotelephone is to communicate via CB with a neighbor who has a regular land-line telephone.
www.ibiblio.org /intergarden/alternative-energy/homepower-magazine/archives/4/04pg29.txt   (3179 words)

  
 Cellular radiotelephone system having colocated base sites - Patent 4775998
for a radiotelephone call in said one cell with a radiotelephone in the second group of radiotelephones, assigning one of the second plurality of voice radio channels for the cell before assigning one of the first plurality of voice radio channels for the cell.
for a radiotelephone call in each cell of said group of cells with a radiotelephone in the second group of radiotelephones, assigning one of the second plurality of voice radio channels for the cell before assigning one of the first plurality of voice radio channels for the cell.
Mobile radiotelephone service has been in use for some time and traditionally has been characterized by a central site transmitting by way of high-power transmitters to a limited number of mobile or portable radiotelephones in a large geographic area.
www.freepatentsonline.com /4775998.html   (7175 words)

  
 [No title]
Radiotelephone for exclusive use of master, person in charge, or pilot; frequency listening watch; portable radiotelephone equipment.
Nothing contained herein shall be interpreted as precluding the use of portable radiotelephone equipment to satisfy the requirements of this chapter.
Radiotelephone capability; maintenance; restoration; consequences of loss: navigation of vessel -STATUTE- Whenever radiotelephone capability is required by this chapter, a vessel's radiotelephone equipment shall be maintained in effective operating condition.
uscode.house.gov /download/pls/33C24.txt   (871 words)

  
 Element 3 - General Radiotelephone
According to the FCC's Commercial Operator Licenses: Examinations page, Element 3 is required for two FCC licenses: The General Radiotelephone Operator's License (PG) and the Global Maritime Distress and Safety System Radio Maintainer (DM).
The GROL (PG) is required to adjust maintain, or internally repair FCC licensed radiotelephone transmitters in the aviation, maritime and international fixed public radio services.
It is required to operate any maritime land radio station or compulsorily equipped ship radiotelephone station operating with more than 1500 watts of peak envelope power and any voluntarily equipped ship and aeronautical (including aircraft) stations with more than 1000 watts of peak envelope power.
www.radideo.com /weekly/rad081204.htm   (637 words)

  
 Cellular mobile radiotelephone system and method for automatically identifying a selected mobile radiotelephone ...
A mobile radiotelephone provides identification information as it originates a call or registers into thee CMR system by powering up or initially entering the area of coverage of a cell.
This identification information is monitored by a detection module, and predetermined identifying characteristics derived from the identification information identify the registering mobile radiotelephone as a member of a predetermined class, such as roamers.
    The invention relates to a cellular mobile radiotelephone (CMR) system according to the preamble of claim 1 and to a method for automatically identifying a selected mobile radiotelephone according to the preamble of claim 35.
www.delphion.com /details?pn=EP00497203B1   (450 words)

  
 GMDSS (DO) FCC Element 7 Question Pool   (Site not responding. Last check: 2007-11-07)
A time period when the radiotelephone watch receiver can be turned off because no traffic is sent.
GMDSS provides alternate equipment carriage requirements in lieu of 2182 radiotelephone distress frequency watch receiver and capacity to generate a 2182 kHz radiotelephone alarm signal.
When testing a radiotelephone alarm signal on 2182 kHz into an artificial antenna, the distress frequency watch receiver becomes unmuted; an improper testing procedure.
members.aol.com /ab0di/el7c1.html   (5604 words)

  
 SEA 7157   (Site not responding. Last check: 2007-11-07)
It is not only a superb radiotelephone, along the lines of other SEA top quality VHF marine products, but it incorporates the capacity for digital selective calling.
Because of SEA's involvement as a manufacturer of GMDSS products and systems, we are able to be among the first to offer a VHF radiotelephone based on future services.
The design of this radiotelephone is based on the most up-to-date technology in RF architecture, LCD displays, and other wireless componentry.
www.sea-dmi.com /marine/sea7157.htm   (278 words)

  
 General Radiotelephone Operator License (GROL)
The General Radiotelephone Operator License (GROL) is required to adjust maintain, or internally repair FCC licensed radiotelephone transmitters in the aviation, maritime and international fixed public radio services.
These are required to operate radiotelephone stations aboard vessels weighing more that 300 gross tons, that carry more than six passengers for hire in the open sea or any coastal/tidewater area of the United States, aboard certain vessels that sail the Great Lakes, and to operate certain aviation radiotelephone stations and certain coast radiotelephone stations.
The GROL is issued by the United States Federal Communications Commission for the lifetime of the holder.
www.radideo.com /weekly/rad083102.htm   (603 words)

  
 FR Doc 03-18643   (Site not responding. Last check: 2007-11-07)
There are approximately 100 licensees in the Air-Ground Radiotelephone Service, and the Commission estimates that almost all of them qualify as small entities under the SBA definition.
This service operates on several ultra high frequency (UHF) TV broadcast channels that are not used for TV broadcasting in the coastal area of the states bordering the Gulf of Mexico.
There are approximately 1000 licensees in the Rural Radiotelephone Service, and the Commission estimates that almost all of them qualify as small entities under the SBA definition.
a257.g.akamaitech.net /7/257/2422/14mar20010800/edocket.access.gpo.gov/2003/03-18643.htm   (6199 words)

  
 Radio Spectrum - 10 kHz to 30 MHz
Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - All Areas.
Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Pacific Coast, daily, south of 42 deg.
Maritime SSB Radiotelephone [80.373] - Intership Safety and Operational - Gulf of Mexico.
www.jneuhaus.com /fccindex/10_khz.html   (987 words)

  
 47 CFR PART 13   (Site not responding. Last check: 2007-11-07)
(d) A Restricted Radiotelephone Operator Permit-Limited Use issued by the FCC to an aircraft pilot who is not legally eligible for employment in the United States is valid only for operating radio stations on aircraft.
(e) A Restricted Radiotelephone Operator Permit-Limited Use issued by the FCC to a person under the provision of Section 303(1)(2) of the Communications Act of 1934, as amended, is valid only for the operation of radio stations for which that person is the station licensee.
The terms of all Restricted Radiotelephone Operator Permits issued prior to November 15, 1953, and valid on that date, are extended to the lifetime of the operator.
www.washingtonwatchdog.org /documents/cfr/title47/part13.html   (4147 words)

  
 [No title]   (Site not responding. Last check: 2007-11-07)
a distance sensor, associated with the radiotelephone, that estimates a distance d from the radiotelephone to the user, and that determines when the radiotelephone is within a selected radiotelephone proximity zone;
a speaker volume control, connected to a speaker on the radiotelephone, that receives the estimated distance and adjusts the speaker volume according to the estimated distance between the radiotelephone and the user, that provides a minimum value V
(max), when the radiotelephone is within the proximity zone and is activated for use.
www.uspto.gov /web/patents/patog/week06/OG/html/1291-2/US06853850-20050208.html   (182 words)

  
 VHF Radiotelephone Practices and Procedures Regulations   (Site not responding. Last check: 2007-11-07)
"qualified in the use of the radiotelephone" means that a person is capable of making effective use of the radiotelephone for communications in accordance with international procedures; (qualifié en radiotéléphonie)
The master and the person in charge of the deck watch shall ensure that these Regulations are complied with.
A ship that is between the lower exit of the St. Lambert Lock and Crossover Island or between calling-in points Nos.
laws.justice.gc.ca /en/S-9/SOR-81-364/text.html   (2032 words)

  
 Satellite-based radiotelephone communication (from telephone and telephone system) --  Encyclopædia Britannica   (Site not responding. Last check: 2007-11-07)
In order to augment the terrestrial and aircraft-based mobile radiotelephone systems discussed in Cellular radio and Personal communication systems, several satellite-based systems are planned for operation.
More results on "Satellite-based radiotelephone communication (from telephone and telephone system)" when you join.
More from Britannica on "Satellite-based radiotelephone communication (from telephone and telephone system)"...
www.britannica.com /eb/article-76217?tocId=76217   (829 words)

  
 HF SSB Radiotelephone Voice, Email, Fax, Satellite Marine Messages, Telegrams, VHF Radiotelephone, Telex Sitor & ...
ShipCom is the United States only 24 hour provider of HF SSB radiotelephone and VHF radiotelephone Ship to Shore voice service.
ShipCom stations WLO WCL KLB and KNN are all remotely controlled from Mobile, Alabama where operators are on duty 24 hours per day 7 days per week for radiotelephone Ship to Shore and Shore to Ship calls.
The charge for VHF radiotelephone service is.99/minute with a 3 minute minimum.
www.shipcom.com /VHF.htm   (976 words)

  
 CANADA SHIPPING ACT - VHF Radiotelephone Practices and Procedures Regulations   (Site not responding. Last check: 2007-11-07)
These Regulations may be cited as the VHF Radiotelephone Practices and Procedures Regulations.
"qualified in the use of the radiotelephone" means that a person is capable of making effective use of the radiotelephone for communications in accordance with international procedures;
(1) Subject to subsection (3), on every ship a listening watch on a VHF radiotelephone receiver shall be maintained continuously during the period commencing fifteen minutes before the ship is underway and terminating when the ship is
www.tc.gc.ca /acts-regulations/GENERAL/C/csa/regulations/090/csa096/csa96.html   (2169 words)

  
 NRE : Restricted Radiotelephone Operator Permit (RP)
Restricted Radiotelephone Operator Permit (RP) is needed to operate most aircraft, aeronautical ground and marine radiotelephone stations aboard pleasure craft (other than those carrying more than six passengers for hire on the Great Lakes or bays or tidewaters or in the open sea where operator licensing is required).
Most broadcast station licensees, however, require their technicians and engineers to hold a General Radiotelephone Operator license.
The Restricted Radiotelephone Operator Permits are issued for the holder's lifetime.
www.w5yi.org /page.php?id=33   (370 words)

  
 SEA 235
Entering the digital age has allowed us, in the SEA 235, to introduce a radio which is 40% smaller and 33% lighter than any other singlesideband radio on the marine market.
SEA Inc. was the company that provided the marine marketplace with a practically-priced synthesized SSB radiotelephone over 17 years ago.
SEA SSB radiotelephones have consistently won the National Marine Electronics Association's (NMEA) award for excellence in SSB radiotelephone over the last 14 years.
www.sea-dmi.com /marine/sea235.htm   (221 words)

  
 Offshore Radiotelephone Service   (Site not responding. Last check: 2007-11-07)
The Offshore Radiotelephone Service allows Commercial Mobile Radio Service (CMRS) providers to use conventional duplex analog technology to provide telephone service to subscribers located on (or in helicopters en route to) oil exploration and production platforms in the Gulf of Mexico.
This service may operate in the paired 476/479 through 489/493 MHz bands, in three zones comprising Louisiana and Texas, depending on the longitude.
This service was not affected by the Paging Order, WT Docket 96-18.
wireless.fcc.gov /offshore   (138 words)

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