Jump to content
  • 0

Understanding Input Tones


TelecomGuy

Question

5 answers to this question

Recommended Posts

  • 1

"When programming a radio, the technician (or user) would select one of these 84 codes, which are represented as 3-digit octal numbers in the CPS. In some Motorola models, it is possible to select Inverse DPL - this is merely a 1's complement of the DPL code and allows another ~84 codes to be used on a system."

Link to comment
Share on other sites

  • 0
2 hours ago, TelecomGuy said:

D047N
D047l
Can some explain the difference between these two?

My radio is a TidRadio TD-H8

DCS isn’t a tone; it’s a digital pattern. All the bits are inverted for the I version compared to the N (normal) version but that doesn’t necessarily mean there are twice as many patterns because a digital pattern that is inverted is equal to a normal pattern. For example if you invert the hexadecimal value for “A” it’s “5”.

So why is that done?  Good question. 

Edited by SteveShannon
Correct my statement. It’s been too long since I’ve thought about flipping bits.
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Guidelines.