GMRS Repeater Tone Options

[Whiskey363]

When a repeater owner lists Input and output tones as a number such as 114.8 Hz is that always a CTCSS tone?

It is clear when it is listed as 172 DPL, they give you the information that is a Digital Private Line Tone, or DTCS in CHIRP NEXT.

It gets more confusing when the output and input tones are different, but not listed as DPL. For instance, Input Tone 114.8, Output Tone 141.3. Is this a CROSS tone in CHIRP? 

If so, is it TSQL or DTCS? I have researched is but can't find the answer. 

[WRXB215]

Yes, if it has a decimal it is always CTCSS.

For the other questions, keep this page handy. If you are like me, you will forget and have to refer back to it from time to time.

[SteveShannon]

12 minutes ago, Whiskey363 said:

When a repeater owner lists Input and output tones as a number such as 114.8 Hz is that always a CTCSS tone?

It is clear when it is listed as 172 DPL, they give you the information that is a Digital Private Line Tone, or DTCS in CHIRP NEXT.

It gets more confusing when the output and input tones are different, but not listed as DPL. For instance, Input Tone 114.8, Output Tone 141.3. Is this a CROSS tone in CHIRP? 

If so, is it TSQL or DTCS? I have researched is but can't find the answer. 

If they refer to it as a tone, it’s CTCSS, but the decimal makes it certain.

When a different tone is listed for receive, you can always just leave the receive tone empty.

If you do use a tone for receiving, there are only two choices that make sense for Squelch Mode: Tone or TSQL.  The difference is that TONE means you send a tone to open the repeater but you don’t filter on the receive tone.  TSQL means you send a tone to open the repeater and you filter received signals, breaking squelch only when a matching tone is received.

DTCS is only used when you send or receive digital codes (aka DPL).

[Whiskey363]

23 minutes ago, SteveShannon said:

If they refer to it as a tone, it’s CTCSS, but the decimal makes it certain.

Thank you, I thought the decimal was the key determinant.

If you do use a tone for receiving, there are only two choices that make sense for Squelch Mode: Tone or TSQL.  The difference is that TONE means you send a tone to open the repeater but you don’t filter on the receive tone.  TSQL means you send a tone to open the repeater and you filter received signals, breaking squelch only when a matching tone is received.

To be clear, if I want to add a TX and RX tone for a repeater in CHIRP, it would be TSQL?

Thank you for your time!

 

 

[SteveShannon]

3 minutes ago, Whiskey363 said:

To be clear, if I want to add a TX and RX tone for a repeater in CHIRP, it would be TSQL?

That’s correct.  When you specify TSQL you send a tone to the repeater and you filter out any transmission that you receive unless they match your receive tone.