What does "265 DPL" mean as a repeater Input Tone?

[RogerSpendlove]

A repeater I'm wanting to connect to is listed as having Input Tone "265 DPL," but this doesn't match any of the options in my Radiodity GM-30 (actually a Baifeng GM-15) software. The options I see are "D265N" and "D264I." Which one should I use? And should I enter this my my transceiver's Rx DCS or its Rx CTCSS?

[StogieVol]

7 minutes ago, RogerSpendlove said:

A repeater I'm wanting to connect to is listed as having Input Tone "265 DPL," but this doesn't match any of the options in my Radiodity GM-30 (actually a Baifeng GM-15) software. The options I see are "D265N" and "D264I." Which one should I use? And should I enter this my my transceiver's Rx DCS or its Rx CTCSS?

The DPL just means digital, So what you want is that D265N for your tone. And that was a good question. Feel free to ask anything. 

[Socalgmrs]

57 minutes ago, RogerSpendlove said:

A repeater I'm wanting to connect to is listed as having Input Tone "265 DPL," but this doesn't match any of the options in my Radiodity GM-30 (actually a Baifeng GM-15) software. The options I see are "D265N" and "D264I." Which one should I use? And should I enter this my my transceiver's Rx DCS or its Rx CTCSS?

N is normal I is inverted.   In gmrs is should always be N unless some one is not playing by the rules. 

[OffRoaderX]

1 hour ago, Socalgmrs said:

In gmrs is should always be N unless some one is not playing by the rules. 

Thanks for trying, but this is incorrect.  GMRS/the FCC rules fully support "i" or inverted DCS/DTC/DPL tones. 

In a case where N or "i" is not specified, it can always be assumed to be "N" (Normal).

[WRUU653]

59 minutes ago, Socalgmrs said:

N is normal I is inverted.   In gmrs is should always be N unless some one is not playing by the rules. 

What rule is that? Rhetorical question. There is no rule you can't use inverted for GMRS. 

[WRUU653]

@OffRoaderX you be fast sir 

 

[RogerSpendlove]

Thank you for answering! Do you happen to know what is the difference between the 'N' and the 'I' options?  I see both in the programming software, but in the transceiver itself, only the N options appear.

[RogerSpendlove]

Never mind! I didn't see Socalgmrs's reply above!

[marcspaz]

1 hour ago, RogerSpendlove said:

Thank you for answering! Do you happen to know what is the difference between the 'N' and the 'I' options?  I see both in the programming software, but in the transceiver itself, only the N options appear.

 

DCS / DPL uses a binary code to decide if the squelch opens or not.  In standard DCS (Normal, or N), they use frequency shift keying, with a negative frequency shift being equal to zero and a positive frequency shift being equal to one.

 

Manufactures can opt to reverse (Invert, or I), the meaning of the frequency shift.  Meaning the negative frequency shift can equal one, and a positive shift can equal zero. 

There is no way to automatically detect this, because the encode/decode process is based in time and time-shifting.  So, you have to manually configure the radio to define if you are you using Normal or Inverted.