SDS100/SDS200: P25/Squelch

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Ubbe

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I'm not sure why but I turned Filter off only on the transit system and I got the RSSI to -35/-45, full signal bars and DATA consistent.
What werinshades say. If you see a signal at -60dBm or stronger at -50 and up you should use the attenuator for that frequency/site without loosing the signal. If it should drop to -90 or lower it probably are a strong interference that are bugging you. Probably several interferencies if you have tried all filter settings.

You can only stop on a frequency in conventional mode. If you try and hold when scanning a trunked system it will only hold on a talk group and cannot do IFX, it will ignore the Fn action and only react to the 7 as if you want to quick enter a frequency.

But you can use that procedure to enter the frequency that you have set IFX to and push the channel button. The frequncy will show on the display and the also the IFX text will show. Now you do Fn+7 and it will toggle and IFX will dissapear. The scanner uses an internal table where a frequency that are set to IFX will always have IFX enabled when used in both conventional and trunked mode.

/Ubbe
 

Dexter2

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Thank you Ubbe and wearinshades. This is what happened when I turned Attenuator on for this site.
 

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Dexter2

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What werinshades say. If you see a signal at -60dBm or stronger at -50 and up you should use the attenuator for that frequency/site without loosing the signal. If it should drop to -90 or lower it probably are a strong interference that are bugging you. Probably several interferencies if you have tried all filter settings.

You can only stop on a frequency in conventional mode. If you try and hold when scanning a trunked system it will only hold on a talk group and cannot do IFX, it will ignore the Fn action and only react to the 7 as if you want to quick enter a frequency.

But you can use that procedure to enter the frequency that you have set IFX to and push the channel button. The frequncy will show on the display and the also the IFX text will show. Now you do Fn+7 and it will toggle and IFX will dissapear. The scanner uses an internal table where a frequency that are set to IFX will always have IFX enabled when used in both conventional and trunked mode.

/Ubbe

Thank you I got it! What does Step mean - its set as Auto?
 

Ubbe

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This is what happened when I turned Attenuator on for this site.
So the signal dissapeared completely and the Noise value says that there's no signal at that frequency.

Either your scanner doesn't indicate the signal strenght properly, the fact that you have to set SQ to 1 with that high signal strenght might indicate that, or you have a massive problem with interference at you location. Have you tried any of the two other sites to see if those can be received?

/Ubbe
 

Dexter2

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So the signal dissapeared completely and the Noise value says that there's no signal at that frequency.

Either your scanner doesn't indicate the signal strength properly, the fact that you have to set SQ to 1 with that high signal strenght might indicate that, or you have a massive problem with interference at you location. Have you tried any of the two other sites to see if those can be received?

/Ubbe

The other two sites, one I've never received ever especially because its really far from my location, the other one I've only received when I crossed county lines though once I was able to pick it up crossing back into my neighborhood from that county, but once I got home I was no longer able too. At this moment this evening, I have SQ on 2, D-ERROR is 0, NOISE - 3 digits, RSSI: -45, I increased the Delay time for the Talkgroups that it picks up and it doesn't even do nothing it still flashes/skips and DATA/D-ERROR/RSSI all go blank and NOISE goes thru the roof (which suggests to me it may not be radio issue because if I leave it like that unfortanately say 3 out 15 transmissions I actually do receive fine). I checked the other systems (Fire and PD) and those are perfectly fine. As usual if I turn the SQ to 1 then the transit talkgroup holds so I'm able to receive perfectly. Since the last post, I reprogrammed the radio, resetted the settings, cleared the data, undid the IFX, left the individual site filters alone. The only thing I did was change the Global Auto Filter to None after experimenting with each. I am trying to show a video of everything I'm saying but it is difficult to post the clip here.

It may very well be a radio issue even when I leave the house with it the transit still doesn't come through as it does inside my home which again I find strange. I was even on the highway in the other county passing their headquarters and still nothing. In my state forum, one other person mentioned that same thing, they were parked outside the headquarters and got nothing, while others have said they are far away (in the same county though as the headquarters) and receive perfectly no issues - but they are out in the suburban country parts as I am in a dense urban area).
 
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Dexter2

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Update: On Thursday, I decided to try a second time and take the radio out and about. SQ 1, Global Auto Filter - Off, didn't get much activity. I went to different locations outside and no idea how or why but I got it to work with SQ 3, GAF - Wide Invert, and at the other location SQ 2/GAF - Wide Normal. Interestingly enough for me so, I brought it back home and yesterday I tried it. SQ 3 with Wide Invert Global Auto Filter (D-ERROR: 0, NOISE: 200/300'S, RSSI: Between -50/-60. and truly surprised it worked in my living room of all places, yes it still flashed/skipped like before on a talkgroup but definitely not as much and i began receiving more activity like I would have since I've had it on SQ1/GAF - Off since November.

But, now today I turned the radio on still have it on SQ 3 and Global Auto Filter - Wide Invert. Same D-ERROR, NOISE, and RSSI but this time its starting not to pick up the talkgroups again, instead of every 3 out of 15 conversations it skips 3 times before it holds and I can hear the activity or it flashes 6 times but then the conversation is over. When it does finally hold after flashing I noticed the RSSI goes up to -90's to -110, if activity comes in normally without the skip it stays at -60. So I just tried to put the Attenuator on and same like before everything goes blank.

I don't know why since November, I can now receive in my home a little more consistently with SQ higher than 1. I also tried to receive with the FD/PD system but it seemed I got less activity because it would flicker more and I had the system Hold at 255 or there is a malfunction because one occurrence it didn't even hold it kept rotating to the other systems and transit would be really fast but then once it recycled then Transit would show to be in the mix then the next cycle it would hold for the 255 before moving onto the Police system.
 

werinshades

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What is the system hold time set at? Why don't you try setting the filters at the site level instead of globally if the systems are different? I think we've exhausted all the suggestions here, so might be time for a Uniden repair trip?
 

Ubbe

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What is the system hold time set at?
Maybe Hold could help, if it where set to a value that match the time equal to a complete conversation on the site. But it's probably the TG delay that needs to be longer than the drop out time to be able to stay on a conversation and not continue to scan. That means that you'll have to program all TG's that you monitor as Uniden forgot to add any adjustable parameters to new TG's found during ID search.

/Ubbe
 

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After multiple attempts and reading both of your replies, I have been able to get a video of both explanations. I am happy but surprised it happened back to back. The radio is set at SQ 2, Global Auto Filter - Normal, Site Filter - Wide Invert and Site HOLD at 255. I switched back to ID Scan and I avoided all the Talkgroups except for the four main ones. This video shows when receiving and when not. I have tried to increase the TG delay as high as 30 seconds on other occasions (in this video its at 2 seconds) and even when I do it while Holding on that particular group the numbers get funky, DATA/Signal Bars blink or disappear until the conversation is over.
 

Dexter2

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How do you post a video? I've tried zip files, compression size, file type conversion - the video is only 28 seconds.
 

Ubbe

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while Holding on that particular group the numbers get funky
That's probably because the received signal are too distorded and interfered by some other radio frequency.

You can only upload a certain amount of MB to RR for each user. It accepts zip so that should work. Perhaps you have the resolution set for the video to a very high value. 640x480 are probably ok. If it still fails then upload to something like google drive or other free services that holds zip files.

/Ubbe
 

Ubbe

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In the video you see that the control channel have a strong signal at -50dBm but the voice channel or channels are at -100dBm and that requires the low SQ setting of 1 as it is on the brink of being received.

If you set the display to detailed mode you will see the frequency in use when they talk. Compare that to the control channels frequency to see if they are in the same frequency range. It's strange that there's a 50dB difference in signal strenght from frequencies at the same site.

The scanner can reduce gain when it sees a strong adjacent frequency. The maximum it can reduce are 50dB so it might be a connection there. Too bad that it cant't be resolved by filters but try that IFX again on the VOICE frequency, not the control channel as that seems to work ok. And then apply all the different filter settings again and watch the signal level when there's a conversation.

/Ubbe
 

Dexter2

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Its currently rotating between five frequencies.
859.8125c
859.1125a
858.6875a
857.0625
856.7875

It was rotating between all five then it just stopped and stayed on 859.1125a (no activity as of yet but hasn't rotated since), when I received one transmission i saw the conversation was on 857.0625 but forgot the second one.
857.0625
856.7875
Are these the voice channels then?

If there is a strong adjacent, could it be a wrong frequency in the database?
 
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werinshades

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Its currently rotating between five frequencies.
859.8125c
859.1125a
858.6875a
857.0625
856.7875

It was rotating between all five then it just stopped and stayed on 859.1125a (no activity as of yet but hasn't rotated since), when I received one transmission i saw the conversation was on 857.0625 but forgot the second one.
857.0625
856.7875

Are these the voice channels then?

If there is a strong adjacent, could it be a wrong frequency in the database?

I would start with IFX on these two:
857.0625
856.7875

This can be done via Sentinel:

Edit...Edit Profile...Miscellaneous...right lower part of screen..IFX..Review and Edit...enter those two frequencies.
 
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