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Author Topic: When did DSC become a 'thing'?  (Read 3873 times)
WJ6S
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« on: August 29, 2017, 08:14:40 PM »

I'm returning to the hobby after a very long absence. A number of repeaters in my area use DCS, and none of my old rigs obviously support that. I was just curious how long DCS has been commonly available in radios, and commonly used by repeaters?
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KC8KTN
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« Reply #1 on: August 29, 2017, 10:41:26 PM »

Great Question.. I would also like to know. Again a great question.Take Care . Have a Joyous day and a Blessed day and be safe..
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WZ7U
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« Reply #2 on: August 29, 2017, 10:56:13 PM »

 Kiss the thread kiss of death right there
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SOFAR
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« Reply #3 on: August 30, 2017, 03:43:15 AM »

I'm returning to the hobby after a very long absence. A number of repeaters in my area use DCS, and none of my old rigs obviously support that. I was just curious how long DCS has been commonly available in radios, and commonly used by repeaters?

DCS is not common on Amateur repeaters, used more on the business band. PL tone, and or CTCSS is commonly used on Amateur repeaters.

I discovered the virtues of CTCSS about a week into the hobby. It keeps the radio silent unless it receives a sub-audible tone from the repeater, otherwise, when driving  in an urban area there's frequently gas stations etc., that cause audible interference when using RF squelch.

Not all repeaters support CTCSS, but just about all in the Chicago area require a PL tone to access. I think there's a 220 MHz  repeater that's still carrier squelch, to accommodate the older 220 transceivers.

DCS= Digital coded squelch.
CTCSS = Continuous tone coded squelch system.
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K9MHZ
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« Reply #4 on: August 30, 2017, 05:13:12 AM »

A number of repeaters in my area use DCS

What bands?  Reason I'm asking is that DCS is very common on ham allocations that are populated with converted business band rigs.... eg. 33 cm.  Not knowing what congestion you're experiencing there in 6 land, I was just curious what bands there are seeing DCS being used? 
« Last Edit: August 30, 2017, 05:16:49 AM by K9MHZ » Logged
K0UA
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« Reply #5 on: August 30, 2017, 06:45:24 AM »

Digital squelch was in use back when I used to be a radio tech.  And that was a LOOOOOOG time ago. I have not seen it used on amateur repeaters.  I don't see any need for it.
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73  James K0UA
ARRL Missouri Technical Specialist
WJ6S
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« Reply #6 on: September 01, 2017, 06:21:05 PM »

At least where I live, SF Bay Area, a number of repeaters are using DCS. But sounds like it isn't too common. Guess I can hold on to some of the old gear still Smiley
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K9YLI
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« Reply #7 on: September 02, 2017, 07:14:58 AM »

DCS is mostly  pageing.  you set your radio to a DCS tone.  It only opens up if you buddy calls you with the same tone.  You dont have to listen to all the other conversations on the air.
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