Thatsclear
Member
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- Oct 25, 2019
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Can anyone identify this MDC1200? What radio model it comes from? It's on the YouTube Video provided in the link. The MDC1200 is at the 0:34 mark. Thanks for any help!
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MDC1200 Ident?
- Thread starter Thatsclear
- Start date
mmckenna
I ♥ Ø
I could decode a few of the MDC1200 bursts, but not the one at 0:34. You can try yourself if you have an iPhone, there's an app called "Radio ID" that will decode MDC1200, Fleetsync, GEStar and QC2 paging tones.
No way to know what brand radio it comes from. The patent on the MDC1200 protocol expired a few years back, and most public safety radio manufacturers support it. If you want to know what brand radio they are using, you'd probably do better by searching for photos from that department.
No way to know what brand radio it comes from. The patent on the MDC1200 protocol expired a few years back, and most public safety radio manufacturers support it. If you want to know what brand radio they are using, you'd probably do better by searching for photos from that department.
Sounds like the remote override tone.
The tone would be sent out over the air because the console or remote keyed while the comparator was dropping its signal to the repeater.
Could be wrong, but that’s what it sounds like to me.
The tone would be sent out over the air because the console or remote keyed while the comparator was dropping its signal to the repeater.
Could be wrong, but that’s what it sounds like to me.
mmckenna
I ♥ Ø
That makes sense.
jrothwell
Member
That's the "tone remote" from the dispatcher's wireline console. You're only hearing it because the repeater trail was still activated from the previous unit's transmission. You'll also hear this from the units going through a voted receiver when the trail is still active if those are connected directly to the transmitter via wireline as well.
This tone instructs the repeater to activate the transmitter and what channel to use. The tones are transmitted every time but are usually not heard because they are used to control the transmitter before it's actually opened. You'll only hear it during the repeater trail.
This tone instructs the repeater to activate the transmitter and what channel to use. The tones are transmitted every time but are usually not heard because they are used to control the transmitter before it's actually opened. You'll only hear it during the repeater trail.
wgbecks
Active Member
Specifically, a short burst of High-Level Guard Tone (HGT) 2175 Hz followed by a burst of 1950 Hz (F1) Function Tone originating from
the dispatch console. The three MDC ID's leading up to the tone remote console tones were: ID-2400, ID-2400, and ID-2365 respectively.
The OPs audio track was captured with Audacity where I fed the MDC ID tone bursts into MDC Tool Console for decoding.
The Dispatch Console tone frequencies were determined using Audacity's Analyze Spectrum function.
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