• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

Dps

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TexasMale

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Could someone please tell me what the 162.2 PL Under the Tone means and what does it do??
 

hiegtx

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TexasMale said:
Could someone please tell me what the 162.2 PL Under the Tone means and what does it do??
PL, also called CTCSS, is a way of separating transmissions and/or mobile units sharing the same frequenct. Another system in common use is called DCS.

Using a PL/CTCSS tone or DCS code allows the user of the system to exclude receptions transmissions on the frequency that are not using the same tone or code. For the scanner listener, you can use the tone to help elimnate confusion.

An example of this is the frequency 154.400 in the Dallas County area. It's used by Glenn Heights FD, about 15 miles to my south, and Balch Springs FD, a little farther to my east. Until a year or two ago, it was also used by Rockwall FD, about 30 miles northeast, but definitely in range. So when you heard a transmission on the frequency, who was it? Unless you had a map handy, recognized a major street, something distinctive about the dispatcher's voice or style, unit numbers, whatever, you might not know for sure. Now, with separate PL tones, they can identified without confusion. I have each city entered in a channel, text tagged, with their unique PL tone.

The down side is that if you also had another agency (or mobile units) on the frequency that did not use a PL or DCS, you'll never hear them.

In some cases, using a PL or DCS on a frequency that is prone to interference from another electronic device may allow you to use a lower squelch setting and still avoid the annoyance.YMMV.
 
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