Question about Motorola Talkabout SX700 2-Way Radio

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What are the ctcss frequencies?

Ctcss frequency list for the sx700 2-way radio?

Posted by Anonymous on

  • greg Dec 12, 2014

    Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?

    Are you asking what are the frequencies used for CTCSS, or are you asking for what is CTCSS used?



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SOURCE: Require Frequencies for CTCSS codes for Motorola GP 2000

check this link at page 21 or see below

CTCSS PRIVACY CODES FREQUENCY CHART (Hz) Code Freq. Code Freq. Code Freq. Code Freq. Code Freq. 1 67.0 9 91.5 17 118.8 25 156.7 33 210.7 2 71.9 10 94.8 18 123.0 26 162.2 34 218.1 3 74.4 11 97.4 19 127.3 27 167.9 35 225.7 4 77.0 12 100.0 20 131.8 28 173.8 36 233.6 5 79.7 13 103.5 21 136.5 29 179.9 37 241.8 6 82.5 14 107.2 22 141.3 30 186.2 38 250.3 7 85.4 15 110.9 23 146.2 31 192.8 8 88.5 16 114.8 24 151.4 32 203.5 * Channel 8,9 and 10 are designated Canadian Marine Frequencies * Channels 8~14 are low-power FRS license free channels Note: Privacy codes can be programmed for use on Channels 1~22 only

Posted on Feb 04, 2010

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What do CTCSS and DCS means

CTCSS is a subaudio (<300Hz) tone that is broadcast when you transmit on a radio. If another radio is set to receive that tone, then the squelch will open and he will hear your transmission. Having said that, any other radio that does not have CTCSS set at all will also hear your transmission, so all it does is for the receiver to hear less of others talking. DCS is the same except that CTCSS sends out a continuous tone, DCS sends out a string of tones. This allows more "channels" to be allocated, but still ,everyone is using the same frequency


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I need to tune my baofeng gt-3 mk2 to the same frequency as my baofeng bf-888s I can hear the bf-888s with my gt-3 but cannot talk I've tried every website why cant i talk over it????

1. Make sure both radios are transmitting and receiving on the same frequency (no repeater offset).
2. Either turn off CTCSS tone or make sure both radios are set to the same tone on both Tx and Rx.

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Take away progamed ctcss and return to normal operation

It would help to know what radio you're having trouble with. There's usually either a way to turn CTCSS on and off, or you cycle through all of the CTCSS tone frequency options until you find the one labeled "none".

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How do I program a yaesu ft-270?

I will be working from the online version of the manual located here. It may or may not be the same as your printed manual included with the radio - so you might want to download this copy.

First, let's set the radio to automatically set up repeater input shift based on the published receive frequency. By default, the 270R will transmit 600Hz up or down as determined by the band plan. This feature is called ARS and can be disabled if desired. If it does not display a frequency 600Hz up or down from the receive frequency while transmitting, is has been disabled. Let's re-enable it by performing steps #1 thru #5 on page 19 of the manual. Once completed, the 270R will automatically shift the transmit frequency (to match the repeater input frequency) as shown in the top half of the "ARS-Repeater Subbands" graphic at the bottom of page 19. The bottom half shows the export version of the shifts and does not apply to USA versions. If you have "odd splits" (repeaters that have input frequencies that are non-standard ie: other than 600Hz; or shift up instead of down and vise-versa) you'll need to manually change these later as described in VHO Split Mode on page 21. Any repeater operating on 147.000Mhz may have a shift either UP or DOWN. As you can see in the graphic, 147.000 is between the (-) and (+) shift so it could be either direction. Double check to make sure the radio matches the shift that the particular 147.000Mhz repeater you wish to access requires.

Next, create a list of repeaters that you wish to save in memory (you can check online databases to obtain the most recent information). This list should include Name, Receive Frequency, any non-standard direction or value Shift (called "odd splits), Tone Type and Tone. The name should be 6 or less alpha-numerics in length and be something that helps you identify it . This could be the name of the repeater owner: "TIM, PETE, etc. ", the name of the club that runs it: "BARC, CMARA, etc.", the city or town it is in: "BOSTON, OAKLND, etc,". You might run into names that would create duplicates when there are more than 1 repeaters there in the same location. Boston has several 2M repeaters - naming them BOSTN1, BOSTN2, etc. may help you remember them, but it will be easier still to append the decimal portion of the frequency to remember - such as in the case of a Boston repeater on say, 146.030Mhz and one on 145.150. BOS030 and BOS150 would probably be easier than trying to remember which is BOSTN1 and which is BOSTN2. Placing the names in the 270R memory is the last thing done, so don't worry too much about a name for the 270R's display just yet.

Most repeaters use CTCSS for access. Some newer repeaters use DCS. Some require or even prefer that no tone be sent at all. CTCSS is an analog frequency and a DCS code is digital data. The repeater may require one or the other to be present to "wake up" and begin retransmitting your message. All you really need to know about these two systems is the you need to match both the tone type and the tone value to successfully activate the repeater. Set the radio to your desired default power output level. Tap the VFO button once to enter VFO mode (if not already in VFO mode).

Enter the repeater's receive frequency by twisting of the tuning dial (page 13) or by direct entry (page 14) via the keypad. When using the keypad, do not enter the leading "1" of the frequency - as all the frequencies that this radio can tune begin with "1" and can not be changed. With the repeater frequency displayed, next enter the CTCSS tone for the repeater as described on page 23. If the repeater uses DCS, follow the directions that begin 1/3 of the way down on page 24 instead. As far as "TONE" and "TONE SQ" are concerned, the difference can best be described in that a radio working on a repeater system benefits from use of TONE, and a radio working on in simplex operation (no repeaters) benefits from the use of TONE SQ. Since we're programming repeater frequencies, there's no need to select TONE SQ. If the repeater strips the tone from its output, your radio will remain silent if set for TONE SQ. TONE is a much better match for our needs. Remember, you must use the DIAL to select the CTCSS tone frequency or DCS Code. Unlike the repeater receive frequency, it is not possible to directly enter the tone frequency or code via the keypad.

At this point, the radio should be displaying the recieve repeater frequency. Since automatic repeater offset is enabled - the 600Hz offset frequency and direction are set. The tone type and value for this repeater frequency have just been set in the previous paragraphs as well. Now it is time to write all this information to the radio's memory. This is detailed 1/3 of the way down on page 29 under "Memory Storage". Once you have performed step 5 in Memory Storage for this first repeater, it says to repeat this same process. This means setting the next repeater's recieve frequency, tone type and tone value - just as you have done with the first.

Once you have made sure that you have unique names assigned and the other information above, you are ready to begin adding them into the 270R's memory. You can go back add names to be displayed instead of the frequency of the repeaters if desired. Page 31 details the procedure to assign an alpha numeric name to each memory location. Make sure that you are assigning the correct alpha-numeric to the repeater by checking the frequency from time to time - don't blindly add alpha-numerics to memory channels.

This is a very tedious process. Ham Radio Outlet offers Windows programming software and transfer cable by Yaesu called "ADMS-270" for $38.95. This package allows you to easily create many lists of memories on your Windows PC & keyboard that can be uploaded and downloaded "on the fly" I highly recommend this software - or any software that allows you to program the radio from a computer rather than the radio itself.

I hope this was helpful.

Nov 29, 2012 | Yaesu Ft-270r Vhf Ft 270r Ft 270 R

2 Answers

Yaesu ftm-10e squelch problem

The FTM-10E is the european version of the dual band amateur radio capable of transmitting in the amateur VHF & UHF (144Mhz & 440Mhz ) bands, that is equal to the FTM-10R sold in the US.

Many repeaters require a predetermined sub-audible tone or signal to be sent when transmitting. If several repeaters in the area operate on the same frequency, they would all transmit at the same time unless they all have different sub-audible tones. These tones allow the user to select which repeater on the same frequency will be used. The tones are either CTCSS or DCS type. CTCSS is "continuous tone coded squelch system" and DCS is "digital coded squelch". CTCSS is expressed as a frequency in Hertz and DCS is a code expressed as a number. CTCSS is more popular, since it has been around longer. When programming or tuning the radio, you will need to provide the repeater's output frequency (and the input frequency if the shift direction and amount isn't programmed - often a 600 hertz shift either up or down depending on isn't already programmed is a default value depending on the repeater output frequency) and whether or not the repeater requires a tone. If it does require a tone (most do), you will need to know the type (CTCSS or DCS) and the value (frequency for CTCSS or code number for DCS) in order for your transmitter to open the repeater and cause it to repeat your transmission AND open the squelch on the radio's receiver so that you can hear replies to your call and other conversations. Repeater directories (both printed and online) will provide all the information needed to access a public repeater, including geographical location, input & output frequencies, squelch type and values to name a few.

If you do not have the correct CTCSS or DCS set, you will see the signal meter on the radio indicate traffic - but you will not hear anything because the radio is squelched. Check the manual page 40 for information on how to program the squelch, and page 42 describes the "shift" I mentioned above. Page 64 & 65 details the theory of squelch via CTCSS and DCS and will help you understand it better.

Basically, you have a "standard" squelch - the knob on the radio and a second squelch that is either CTCSS or DCS. Both types must be set to hear anything. Not having the CTCSS or DCS set will prevent your signal from being repeated by the repeater.

If you have more question, please add them in a comment. I hope this helps & good luck!

Jun 17, 2012 | Yaesu FTM-10R VHF/UHF Mobile Dual-Band...

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Require Frequencies for CTCSS codes for Motorola GP 2000

check this link at page 21 or see below

CTCSS PRIVACY CODES FREQUENCY CHART (Hz) Code Freq. Code Freq. Code Freq. Code Freq. Code Freq. 1 67.0 9 91.5 17 118.8 25 156.7 33 210.7 2 71.9 10 94.8 18 123.0 26 162.2 34 218.1 3 74.4 11 97.4 19 127.3 27 167.9 35 225.7 4 77.0 12 100.0 20 131.8 28 173.8 36 233.6 5 79.7 13 103.5 21 136.5 29 179.9 37 241.8 6 82.5 14 107.2 22 141.3 30 186.2 38 250.3 7 85.4 15 110.9 23 146.2 31 192.8 8 88.5 16 114.8 24 151.4 32 203.5 * Channel 8,9 and 10 are designated Canadian Marine Frequencies * Channels 8~14 are low-power FRS license free channels Note: Privacy codes can be programmed for use on Channels 1~22 only

Feb 01, 2010 | Motorola GP300 Compatible 2 Way Radio...

1 Answer

Need to program in 1-10 this possible ?

Okay, I'm going to attempt to assist you with this. If your TalkAbout 200 has a screen showing your channel number and a smaller number in the upper right. It is possible your radio could be programmed to match another TalkAbout or FRS (family radio service) style radio. I cannot find an owners manual in English for the T200. Here is one you can translate from Czech (Simply copy and paste this into a google search with the word translate in front of it.) It will give you the instructions for reprogramming your "interference eliminator code", aka CTCSS. Your radio has 14 built in frequencies. From your explanation I would assume you need your BIG number to be 1, and your small number to be 10.

If your TalkAbout does not have a screen, you will not be able to do the CTCSS #10. It is a CSQ model only.

Sidenote: If the other radios you are wanting to talk to are NOT FRS-type or TalkAbout radios, your radio will not match them.

Apr 21, 2009 | Motorola Walkie Talkies 2-Way Radio

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