QCII from Dispatch Console

[Bethanylt241]

I am having an issue with my radio alerting from the dispatch console. I have my MDC/QCII set up to receive tones, even have it to where it alerts like a minitor. Radio to Radio it trips the tones, But if tones come from the dispatch center they do not trip. Have anyone encountered this, and could help me solve this issue? Its starting to drive me nuts.

 

[jeepsandradios]

Some info on the dispatch console is needed...

 

[Bethanylt241]

There MCC7500 Consoles, sending tones over analog UHF.

 

[jeepsandradios]

OK. Still alot to unpack. MCC7500 on K-Core or M-Core. How is the tone setup in PM/CM ? Did you verify its the correct tone and timing ? How is the conventinal resource connected ? I assume CCGW 4wire but can be E&M circuit as well. Thru a patch or not ?

Did you ask your ST ?

 

[davidgcet]

first question, do other radios decode properly from the console? you may have yours setup too long on tone timing if so. remember the tone timing is minimum amount of time rx, so if you set for say 2 seconds tone A and 3 seconds tone B but they send 1 and 3 then the radio did not hear tone A long enough to consider it valid. time for each tone must match or it will never work.

 

[Bethanylt241]

I have a mobile that alerts in a different tone fine, when I program my tone list in CPS as quick call it will not let me change the duration timing or anything of that nature, am I missing something somewhere to set timings in tones?

 

[n3obl]

Need to have a tech check the modulation levels on receive. I’ve seen consoles not generate strong enough to too hot a tone signal and the apx won’t decode it but older stuff would.

 

[wgbecks]

I am having an issue with my radio alerting from the dispatch console. I have my MDC/QCII set up to receive tones, even have it to where it alerts like a minitor. Radio to Radio it trips the tones, But if tones come from the dispatch center they do not trip. Have anyone encountered this, and could help me solve this issue? Its starting to drive me nuts.

Need to have a tech check the modulation levels on receive. I’ve seen consoles not generate strong enough to too hot a tone signal and the apx won’t decode it but older stuff would.

Just as quick thought. Is your radio perhaps setup for 5 kHz / 25 kHz (wideband) vs 2.5 kHz / 12.5 kHz (narrowband) that would impact
MDC/QCII decoding capabilities?

 

[Bethanylt241]

first question, do other radios decode properly from the console? you may have yours setup too long on tone timing if so. remember the tone timing is minimum amount of time rx, so if you set for say 2 seconds tone A and 3 seconds tone B but they send 1 and 3 then the radio did not hear tone A long enough to consider it valid. time for each tone must match or it will never work.

I can’t seem to change the timing in the tones without selecting Single Tone vs Quick Call under Tone Signaling, and I do not believe there’s an options to change timing under the Conventionional QCII

 

[Bethanylt241]

Just as quick thought. Is your radio perhaps setup for 5 kHz / 25 kHz (wideband) vs 2.5 kHz / 12.5 kHz (narrowband) that would impact
MDC/QCII decoding capabilities?

Radio is set to Narrowband. Maybe a Modulation issue I feel. I’m assuming it could also be how dispatch is sending tones and what there using. I thought making it an MDC would solve it since they are using MCC Console and assuming from past times using MDC to transmit

 

[Bethanylt241]

I did confirm Tones are correct once again and I do have in my files that tone A is .6 Sec and Tone B is 2 Sec. however I still do not see where I can change that in Quick Call or under Tone Signal tab without selecting Singletone.

 

[talviar]

I did confirm Tones are correct once again and I do have in my files that tone A is .6 Sec and Tone B is 2 Sec. however I still do not see where I can change that in Quick Call or under Tone Signal tab without selecting Singletone.

I'm gonna throw something out there that might be totally out in left field-
MDC/QCII= is this also using PL or DPL on the channel? if so, are u able to hear the tones when on the channel as they come over the air? If yes, IDK what the issue is, if no, Radio is receiving the tones, but the decoder isn't getting them due to the audio technically being squelched. Some systems using PL won't drop the PL on transmit for paging but the original standard had the PL dropped on transmit for paging from the console side.

Otherwise, contact your radio shop, dispatch center, etc to have them take a look at it. Since you have the MDC/QCII firmware- it is possible u have one of the "flaky" versions. Initial deployment of that option with testing by City of Pittsburgh/Allegheny County one of the versions released during testing (that were also regular deployment) had issues with certain tones. Might want to load latest version of firmware.

 

[Bethanylt241]

Yes, I am hearing the tones, just not tripping. However sometimes there a little static or maybe lower modulation. Maybe the receive reception on the channel is not decoding properly

 

[davidgcet]

I did confirm Tones are correct once again and I do have in my files that tone A is .6 Sec and Tone B is 2 Sec. however I still do not see where I can change that in Quick Call or under Tone Signal tab without selecting Singletone.

standard timing is 1/3 not .6/2 that would explain it. it has been several years and since i am no longer in 2 way i don't have an updated version of the APX software. but maybe someone here with current expertise can tell you where to change it. like you i could not find it in my copy i still have, but mine is version 14 so it is reeeeaaaal old.

 

[NVAGVUP]

QC2B is the standard timing for most A/B sequences.