The new Ham Digital Mode of DMR has taken off in the last 5+ years and lots of folks are just getting into it in recently. The repeaters are great and some of the High Site one’s can give awesome coverage. This is even better when you have multiple repeaters with overlapping coverage and is…
Squelch is the circuit that reduces static and excess noise on your radio .Setting it properly improves audio quality by filtering out unwanted signals.
DCS CDCSS or Digital Code Squelch (DCS) is a further development of the continuous tone-coded squelch system or CTCSS that uses a slow-speed, binary data stream passed as sub-audible data along with the transmission. Motorola calls this Digital Private Line or DPL. It consists of a 23-bit telegram sent repeatedly on the channel at…
CTCSS? DCS? Sub-channels? Yes, Continuous Tone Coded Squelch System. Introduced by Motorola in the early 1960s, as “Private Line” (also known as GE/Ericsson’s “Channel Guard”, E.F. Johnson’s “Call Guard”, RCA’s “Quiet Channel”), known by many as simply “tone squelch”. This is like a mains hum on the modulation, a constant musical note… almost as if…
The Continuous Tone Coded Squelch System, commonly referred to as CTCSS, has been in used in the land mobile radio arena from the late 1960’s. It is known by a number of different trade names such as Private Line® (PL) by Motorola, Channel Guard® (CG) by General Electric and generically as tone squelch. It is…
CTCSS is a system whereby a (not really) sub-audible tone is encoded into the transmit audio of a radio and a receiver on another radio on that frequency will only open up (decode) when it picks up that specific tone. While the tones are called “sub-audible”, most people can hear them as a hum in…
There are many different types of vertical antenna or vertical aerial that can be used. These vertical antennas are used in a variety of applications, often as a result of their omnidirectional radiation pattern in the horizontal plane. Vertical antenna advantages There are several reasons why vertical antennas are used as they offer advantages that…
There are a lof of radios in the market have FM function. When we are free and there is no calling, we may open FM to listen. In case we miss any calling, most of the radios’ default settings is Automatic receiving the calling from other radios when we listen FM radio. Some people think…
The origin of World Radio Day This is 13 February. It is World Radio Day, which was proclaimed on 3 November 2011 by UNESCO’s 36th General Conference. It was originally proposed by Spain. This special day is to make sure the important status of radios as a communication carrier in education development, information dissemination and…
What you should consider before purchasing a walkie talkie? Today, let’s discuss together these factors.