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p25 [2019/02/10 17:33]
kd6kpc
p25 [2019/02/11 00:43] (current)
kd6kpc
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 With 2800 bits per second of the total 9600 bits per second channel capacity allocated to error correction, P25 digital signals have improved voice quality over standard analog signals, especially at low or noisy RF carrier levels. The IMBE™ voice coder converts voice information into digital data and then the data is protected using error correction codes. The error correction is able to correct for small errors in the received signal. Since the audio is digitally encoded, the background noise typically present in analog systems is also removed. With 2800 bits per second of the total 9600 bits per second channel capacity allocated to error correction, P25 digital signals have improved voice quality over standard analog signals, especially at low or noisy RF carrier levels. The IMBE™ voice coder converts voice information into digital data and then the data is protected using error correction codes. The error correction is able to correct for small errors in the received signal. Since the audio is digitally encoded, the background noise typically present in analog systems is also removed.
  
-Links: +==== P25 on Repeaterbook ====
-  * [[https://​www.repeaterbook.com/​repeaters/​niche/​index.php?​mode=P-25|Repeaterbook P25 Directory]] +
- +
-==== P25 on Repeaterbook.com ====+
 Repeaterbook.com understands that P25 is a digital format that operates at a bandwidth of 12.5 kHz, but many repeaters can be set up for a mixed-mode to pass analog traffic. P25 can control access to the repeater with a NAC (Network Access Code). It is much like CTCSS, but the signal is sent outside of the digital voice frame. Repeaterbook.com understands that P25 is a digital format that operates at a bandwidth of 12.5 kHz, but many repeaters can be set up for a mixed-mode to pass analog traffic. P25 can control access to the repeater with a NAC (Network Access Code). It is much like CTCSS, but the signal is sent outside of the digital voice frame.
  
 P25 incorporates talk groups and the available talk groups are tracked by Repeaterbook.com. P25 repeaters may also a default talkgroup, which is also tracked by Repeaterbook.com. P25 incorporates talk groups and the available talk groups are tracked by Repeaterbook.com. P25 repeaters may also a default talkgroup, which is also tracked by Repeaterbook.com.
 +
 +=== Related Links ===
 +  * [[https://​www.repeaterbook.com/​repeaters/​niche/​index.php?​mode=P-25|Repeaterbook P25 Directory]]
p25.1549841615.txt.gz · Last modified: 2019/02/10 17:33 by kd6kpc