What radio frequency does Cal Fire Use?
Department of Forestry and Fire Protection (CAL FIRE)
What frequency do emergency services use?
The California On-Scene Emergency Coordination Channel (“CALCORD,” 156.0750 MHz) is specifically designated for inter- discipline use, and its use for such activities is encouraged.
Do all repeaters have a tone?
Tone – For most repeaters, you will need to transmit a CTCSS tone to access the repeater. (CTCSS is Continuous Tone Coded Squelch System.) Repeaters with carrier access do not require a tone, so you can skip this step.
What is repeater frequency offset?
The difference between the repeater’s receive frequency and its transmit frequency is called the offset. So, the offset is a frequency value in units of hertz, kilohertz, or megahertz.
What CB channel do cops use?
Channel 9 is the universal CB emergency channel. In most areas, it is monitored by local law enforcement at all times, so please keep random chatter off this channel. Channels 17 and 19 are commonly used channels by truck drivers. 19 is often used by drivers going east or west; 17 by drivers going north or south.
How do you tell if you hit a repeater?
The simple answer is to transmit on the repeater’s input frequency, saying something like ” < your callsign > testing” and listen for the repeater’s courtesy beep (assuming there is one) on its output. If you’ve heard the beep, then you’ve hit the repeater.
How do I find out the offset of my repeater?
The offset is the shift the radio will do when you transmit. VHF and UHF repeaters are listed in megahertz, and 600 kilohertz is 0.6 MHz, so you add or subtract 0.6 to the repeater frequency as needed to get the transmit frequency.
What is a CTCSS repeater?
CTCSS stands for continuous, tone-coded squelch system, and is a technique used to allow repeaters—and radios—to receive particular signals and reject others. The signals that a repeater (or radio) will receive are signals with a specific sub-audible tone, called a CTCSS tone, that has been added to the signal.
What is a CTCSS (sub audible tone)?
Many repeaters require the use of a CTCSS to access the repeater. It is also known as “sub-audible tone” because its frequency is at the lower end of or just below the range of hearing of most humans. Contrary to popular belief, most repeaters that require the use of a specific CTCSS tone to access the repeater are NOT closed repeaters.
What is Continuous Tone Coded Squelch System (CTCSS)?
This is obviously not desirable and a system known as CTCSS (Continuous Tone Coded Squelch System) has been introduced to overcome this problem. CTCSS uses a sub-audible tone transmitted on the signal of the transmitter trying to access the repeater. The amateur radio repeater has a very sharp filter to detect whether the exact tone is present.
What is a CTCSS and why do I need one?
Many repeaters require the use of a CTCSS to access the repeater. It is also known as “sub-audible tone” because its frequency is at the lower end of or just below the range of hearing of most humans.