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The (American version) radio's main receiver covers 30 kHz through 60 MHz, 142 MHz through 152 MHz, and 420 through 450 MHz (plus 1240 through 1300 MHz with the "X" model). The sub-receiver tunes between 118 and 174 MHz, and from 220 to 512 MHz (VFO ranges).
Table 1: System number allocations for RC-5 System number Description Command tables 0 TV 1 (TV receiver 1) 2, 3, 4a 1 TV 2 (functions and command numbers as system 0) 2, 3, 4a 2 Txt (teletext) 2, 3, 5 3 Extension to TV 1 and TV 2 2, 4b 4 LV (LaserVision player) 2, 3, 6 5 VCR 1 (video cassette recorder 1) 2, 3, 7a 6
An amateur radio repeater system consisting of a 70 cm repeater and a 2-meter digipeater and iGate. Coaxial cavity RF filter at 2 meter repeater An amateur radio repeater is an electronic device that receives a weak or low-level amateur radio signal and retransmits it at a higher level or higher power, so that the signal can cover longer ...
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Receivers in a system using 67.0 Hz can take noticeably longer to decode than ones using 203.5 Hz, and they can take longer than one decoding 250.3 Hz. In some repeater systems, the time lag can be significant. The lower tone may cause one or two syllables to be clipped before the receiver audio is unmuted (is heard).
A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [ 1 ]
The R-390A military shortwave radio receiver was the result of a project undertaken by the United States Army Signal Corps in 1954 to replace the existing R-390 receiver then in use. The R-390 had done its job so well that the Corps decided continued use of this type of receiver necessitated an improved, reduced-cost version.
In designing a system, it is important to pick selective calling tones that do not conflict with remote control tones in use. Analog voting systems usually utilize either 2,175 Hz or 1,950 Hz as an indication a receiver is squelched or idle. In the case of 2,175 Hz, the steady tone leaking from a receiver phone line, or from the output of the ...