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  • Ann Hoffer
    ...eems to only use sideband modulation and broadcasts on or near the popular frequency of 6925 KHz.
    488 B (74 words) - 02:14, 10 February 2010
  • AM
    ...not be equalized to compensate for it. You must also be tuned to the exact frequency or the pitch will be wrong. AM transmitters are easy to make yourself and a
    3 KB (467 words) - 16:09, 6 March 2024
  • FM
    == Frequency Modulation == With FM, the carrier frequency is [[Emission Designator|modulated]] by the audio signal, with the transmit
    2 KB (347 words) - 16:09, 6 March 2024
  • Grenade
    ...o Animal used several interesting techniques, particularly with regards to modulation. He also went to great lengths to obscure part numbers and values. ... and this time it was fully based on the classic and dependable high level modulation technique that AM broadcast transmitters have used for years.
    5 KB (889 words) - 16:06, 21 October 2019
  • Radio Cairo
    ...erribly distorted or otherwise terrible sounding audio. Broadcasts are off frequency and either heavily distorted and occupying a huge bandwidth or have lots of
    2 KB (317 words) - 19:06, 28 July 2022
  • Part 15
    ...n in several bands is allowed, including low frequency 160-190 kHz, medium frequency/medium wave (AM broadcast band), HF frequencies and various [[VHF_/_UHF_Rad (a) The total input power to the final radio frequency stage (exclusive of
    61 KB (9,226 words) - 13:18, 14 February 2024
  • Maritime Fax Transmissions
    ...t the center frequency. In USB mode, the frequency is 1.9 kHz lower (dial frequency). ...or the drum of mechanical systems to get up to speed. It consists of rapid modulation of the video carrier, resulting in a characteristic rasp-like sound.
    21 KB (2,638 words) - 13:43, 23 October 2022
  • FRS
    ... AM or SSB to transmit voice. FRS and CB operate on drastically different frequency bands and use different transmission modes (waveforms) to transmit audio. Y ...or simply "narrow". Not only is this required by FCC rules but due to the frequency spacing used on the FRS band, 11 kHz or narrower bandwidth is strongly reco
    105 KB (16,076 words) - 13:11, 14 February 2024
  • MURS
    ! Frequency |Old Business Radio Service frequency, heavily used by stores, construction sites, etc.
    21 KB (3,203 words) - 13:12, 14 February 2024
  • Remote Control
    There is a [[UAV_Frequency_Bands|separate page for drone radio frequency bands]], however, the R/C frequencies are, and can be, used for controlling ... kHz or so. Higher quality devices allow the user to select the channel / frequency used, often by swapping crystals.
    90 KB (13,083 words) - 12:38, 17 April 2024
  • PMR446
    Where the PMR446 service is authorized the 446 MHz frequency spectrum is not part of the 70cm [[Amateur_radio|amateur]] band. ... countries, analog PMR446 channel 8 - 446.09375 MHz is used as the calling frequency (with 88.5 Hz CTCSS) instead of channel 1.
    30 KB (4,193 words) - 18:30, 13 March 2024
  • Letter beacon
    A '''Letter beacon''' (or '''single letter beacon''') is a high frequency (HF) radio transmission of uncertain origin, which consists of only a singl * SLHFB, or "Single Letter High Frequency Beacons", the original [[SPEEDX]] designation.
    21 KB (2,975 words) - 17:57, 5 March 2022
  • Radio beacon
    ...content (for example its identification or location), on a specified radio frequency. Occasionally the beacon function is combined with some other one-way trans ...ng air and sea navigation, propagation research, robotic mapping and radio frequency identification (RFID).
    19 KB (2,829 words) - 14:25, 28 June 2023
  • Radio propagation beacon
    ...peated data or information, for the study of propagation, determination of frequency or bearing, or for other experimental purposes''.<sup>[1]</sup> ...by frequency shift keying (F1A). A few beacons transmit signals in digital modulation modes, like [[RTTY|radioteletype]] (F1B) and [[PSK31]] (G1B).
    42 KB (6,041 words) - 14:09, 24 March 2023
  • LowFER
    ...run by a hobbyist under FCC Part 15 rules. The word is an acronym of ''Low Frequency Experimental Radio''. Unlicensed LowFER operation is allowed in the frequency range 160 - 190 kHz, the so called ''1750 meters band''.<sup>(1)</sup> In t
    4 KB (600 words) - 20:15, 7 August 2014
  • CB
    ...ave more like a short-range [[VHF / UHF Radio]] service. De facto standard frequency allocation based on 40 channel American CB band 26.965-27.405 MHz. In radi ...al_Users_of_the_25-30_MHz_Spectrum|here]] for 11 meter band 25-30 MHz band frequency allocations, legal users and illegal users.
    227 KB (34,801 words) - 13:19, 3 May 2024
  • Part 15 Beacons
    (a) The total input power to the final radio frequency stage (exclusive of (e) The frequency tolerance of the carrier signal shall be maintained
    8 KB (1,180 words) - 19:06, 22 November 2023
  • Signal Identification
    ...d at all unless the listener just happened to be tuned to the right random frequency when the short duration signal occurred. This has had the affect of raisin ...d modes. The DATA Signals section is loosely broken down into the type of modulation used for the data, FSK, MFSK, PSK, etc.
    17 KB (2,552 words) - 14:29, 28 June 2023
  • Amphetamine Radio
    ...asts in [[AM]] mode, referring to it as "[[Emission Designator|Amphetamine Modulation]]".
    2 KB (363 words) - 18:36, 13 March 2024
  • Community Audio Distribution Service
    ... service, [[AM]] and [[FM]] modes allowed, using [[CB]]-type equipment and frequency bands. ...amples include 27.729 MHz or 27.730 MHz instead of the 27.73125 MHz center frequency. 27.980 MHz AM is included in logs, even though the UK FM band prohibits u
    23 KB (3,527 words) - 18:29, 27 December 2022
  • Business Radio
    *5167.5 kHz 5.1675 MHz - Alaska Emergency frequency (dial frequency in USB mode) ! Frequency (MHz)
    234 KB (34,359 words) - 19:24, 4 May 2024
  • SINCGARS
    ...Patriot_Inter-Squad_Radio_Frequencies_Channel_List|intra-squad radio (ISR) frequency list militia patriot tactical short-range UHF ISR UISR UHFISR frequencies]] ... MHz to 87.975 MHz or 30.0000 MHz to 87.9875 MHz) in 25 kHz steps, with no frequency hopping capability, the radio below is a vehicle-mounted VHF-FM military ta
    60 KB (9,062 words) - 19:08, 13 March 2024
  • Number Stations
    ...to vocalize numbers, although digital modes such as phase-shift keying and frequency-shift keying, as well as Morse code transmissions, are not uncommon. Most s ...essing a shortwave radio and he was not under technical surveillance, high-frequency OWVL was a secure and preferred system for the CIA during the Cold War.
    18 KB (2,849 words) - 23:37, 15 December 2018
  • ALE
    ...stations and uses the [[bit error rate]] to store a quality score for that frequency and sender-address. ...or the handshaking fails, the originating ALE node usually selects another frequency either at random or by making a guess of varying sophistication.
    34 KB (4,897 words) - 15:57, 28 January 2019
  • The Russian Man (RU6)
    ...ns follow the common habit of sending a repeat transmission on a different frequency one hour after the initial transmission. Digital stations follow the common ...his operator, the different voice stations appear successively on the same frequency during the same transmission, sending similar test contents.
    10 KB (1,564 words) - 01:16, 28 July 2019
  • C-QUAM
    ...e to transmit stereo audio. Although never authorized for service on high frequency broadcast stations, some commercial equipment can be modified for such serv
    795 B (113 words) - 20:05, 17 March 2021
  • Birinchi Radio
    .... Despite a power of 100 kW it remains a difficult station to hear because modulation is always very low. It mainly broadcasts news, information and sports but m
    2 KB (242 words) - 19:11, 29 August 2022
  • DECT
    ...nt analog and digital cordless telephone technologies operating on various frequency bands from 1.6-1.7 MHz to 30-50 MHz ([[Cordless_telephone#United_Kingdom|30 ...lephone]] systems. It originated in Europe and is now used worldwide (with frequency allocations differing from country to country...however, there are signific
    5 KB (746 words) - 13:19, 14 February 2024
  • Emission Designator
    *16K0G3E - 4 kHz deviation PM analog phase modulation voice (considered identical to FM or 16K0F3E emission - [[VHF_marine|VHF ma *11K3F3D - Audio frequency shift keying within a narrow band "12.5 kHz" channel
    30 KB (5,534 words) - 19:51, 7 May 2024
  • Cordless telephone
    Both base and handset (portable unit) used frequency modulation ([[FM]]). ...98_MHz.2C_48.75-49.51_MHz_and_49.66-50.0_MHz.|15.233]] using the following frequency pairs.
    21 KB (2,837 words) - 13:19, 14 February 2024
  • B Side Radio
    ... played from vinyl records, often the B Side. Modulation (20 kHz wide) and frequency stability are fantastic, it is one of the best sounding pirates in North Am
    1 KB (200 words) - 05:34, 18 February 2023
  • Common and Precious 5
    * Frequency: 4.095.400kHz (CW and Mark Frequency). RTTY: 170Hz shift, 50 Baud, 2 Stop-bits * Oscillator: pulled 4.096kHz X-tal based on a 74LS02 oscillator circuit. Frequency shifting is done by Varicap Diodes (Schottky Diodes were used since they're
    10 KB (1,582 words) - 11:59, 21 February 2024
  • Vostochnaya Zvezda
    ...023 the op started experimenting with FM and then switched to AM with good modulation. He built an amplifier for the transmitter which significantly improved rec
    2 KB (364 words) - 23:01, 22 May 2023
  • Japanese 40MHz DSB Fishery Radio
    ..._Radio_Bands_MF.2FHF|so-called 10 meter radio or]] export radio [[11_meter|frequency coverage]] AM/FM/[[SSB]] all mode ... voice mode A3 [[Emission Designator|emission]] A3E full carrier amplitude modulation
    5 KB (571 words) - 14:34, 22 February 2024
  • Jazz for the End of the World
    ...y was 7305 kHz in AM mode with a very sharp audio cutoff at 5 kHz and good modulation. No contact information is known.
    709 B (125 words) - 01:15, 18 May 2023

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