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There are two common systems of coding to control squelch: CTCSS “Continuous Tone Coded Squelch System” (also called PL by some manufacturers) and DCS “Digital Coded Squelch”. On a fair number of VHF/UHF radios, there’s a button labeled ‘tone’ which cycles the transmitter through CTCSS, DCS, and nothing.
To say that the terminology surrounding all of this is opaque and confusing would be a massive understatement.
The wikipedia articles for CTCSS and DCS actually do a decent job of shedding some light on all this mess.
73, Don’t forget to smile and have fun!
Thanks. Any idea why my radio has Tone and CTCSS options? It is a Kenwood TH-D72a.
On Mon, Oct 8, 2018 at 9:35 AM Matthew King - AK4MK <kk4cps@...
Hey, Bryon - there is no difference. CTCSS is the technical name for it.
"PL Tone" was Motorola's trademark for "Private Line Tone", but it's all the same.
Carry on, sir! :-)
AK4MK - 070 #1708
PODXS 070 Club Executive Director
On Mon, Oct 8, 2018 at 11:22 AM W7RIV <nnegrom@...
I know this is slightly off topic, but there are a lot of knowledgeable people here. I was curious what the difference was in "Tone" and "CTCSS" when programming a handietalkie. There are local repeaters here in Salt Lake City, and I think people use them interchangeably. The Frequency coordinator calls out at CTCSS, but I think I've programmed my radio when it shows the "Tone"...I cannot remember if I've programmed it when it shows "CT"