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Missing DQT options

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racingfan360

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Can anyone offer an explanation/solution to this.....?

I've just been reprogramming my NX200E and it appears to be missing several DQT (DCS) decode options. I'd like to use my NX200 to receive another repeater channel which uses DCS212, but my NX200 doesn't seem to have that option. It goes D205N to D223N. It's not the only 'missing' DCS/DQT code. The thing I really can't get my head round is that the radio system I'm trying to listen to also uses NX200s !

Any ideas? What am I missing.
 

kd4efm

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What firmware version??

kd4efm Evans, sent using TapTALK on my HTC M9
 

racingfan360

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NX200E is running E 3.21.00 firmware.
KPG-111D software is v4.40.

I know that the (NX200) system I'm now trying to listen to has been using that DCS code - that I don't have - since 2012.
 
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racingfan360

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Instead of using the pull down menu,just try typing it into the box.

Doh! As simple as that. Thanks ramal121

(Still slightly confused as to why they're not included in the pull down list, but hey at least it works now)
 

ramal121

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The problem with using "non-standard" DQT is that it can be falsed by a "standard" DQT that may show up on the channel. The likelihood of that happening is low, but is a possibility. The standard DQTs as shown in the list will not false one another, that's why there is a gap between numbers. Somewhere in the forums is a good discussion on this with some good links.

Same with the tones in QT. Things like 88.5 and 107.2 are not harmonically related and will not react with each other. If there was a QT of 120.0, any transmitter with a 60 Hz buzz from the power supply would false the decoder and open the speaker because of the harmonic relationship. See how this works?

But as you found out, by typing out any QT or DQT (within reason), Kenwood radios happily take it.
 
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racingfan360

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Thanks again ramal121.

Must admit, I'm not sure if I'm more surprised that Kenwood didn't include the 'standard' DCS codes
DCS - The RadioReference Wiki
...by default, or being surprised now at the ability to 'make up' your own DCS codes !!
 
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