SDS100/SDS200: SDS100 Control Channel Only

[GROL]

Programming only Control Channels in the SDS100 does not seem to provide much benefit. When the SDS100 is first turned on, it takes longer to scan each site the first pass with all frequencies, but the second and following passes are just as fast as CC only. Is it that the SDS100 learns the CC on the first pass and ignores the rest of the frequencies after the first time it monitors the site?

 

[baker50021]

My experience with the SDS is either connect a GPS and use location based. If not using GPS then delete all of the sites not in the area. I keep mine at one site with only the CC

 

[trentbob]

My experience with the SDS is either connect a GPS and use location based. If not using GPS then delete all of the sites not in the area. I keep mine at one site with only the CC

That's good advice, it can be a big problem if you roll through multiple sites that are out of range or unnecessary.

I also program any alternate control channels just in case they switch up.

 

[GROL]

I use GPS and zoning sites with quick keys. Limiting the number of sites is not an issue I need to work out. My observation was as stated. Therefore I see no reason to program sites with only control channels which requires me to determine what are not the control channels and deleting them when updating sites from downloads as they change frequencies. NC Viper sites change frequencies on a regular basis and there are 240 Sites. And yes, I do travel into several parts of the state. I was thinking of just maintaining the Control Channels, but that is not as easy as just replacing the sites in the system. What I observed when I limited a few sites to just CCs was as stated before. I was asking to see if anyone else could confirm what I saw was no difference after the scanner monitored the site the first time after power on.

" Programming only Control Channels in the SDS100 does not seem to provide much benefit. When the SDS100 is first turned on, it takes longer to scan each site the first pass with all frequencies, but the second and following passes are just as fast as CC only. Is it that the SDS100 learns the CC on the first pass and ignores the rest of the frequencies after the first time it monitors the site? "

 

[Ubbe]

Is it that the SDS100 learns the CC on the first pass and ignores the rest of the frequencies after the first time it monitors the site?

It stores the last working site and CC to each system, so it goes directly to that CC in each system the second time around in the scan cycle.

/Ubbe

 

[GROL]

It stores the last working site and CC to each system, so it goes directly to that CC in each system the second time around in the scan cycle.

/Ubbe

Oh, Okay. That sounds like what is happening and goes along with what I observed. It confirms there is no big advantage to trying to remove frequencies that are not CC or alternate CC when downloading updates from the Full database or from RR. Thanks.

 

[CHHTX]

It stores the last working site and CC to each system, so it goes directly to that CC in each system the second time around in the scan cycle.

/Ubbe

I can't believe it. I came here to actually post the same question and it found this. Apparently search DOES work!

 

[Ubbe]

It confirms there is no big advantage to trying to remove frequencies that are not CC or alternate CC

If you loose the signal from a CC, you might be temporarely out of coverage behind a building or too far away from the site, it will scan the rest of the channels in the site. Then some of those frequencies can belong to other systems that will slow down the scan process a lot. Best to only keep CC and alternate CC.

/Ubbe

 

[GROL]

If you loose the signal from a CC, you might be temporarely out of coverage behind a building or too far away from the site, it will scan the rest of the channels in the site. Then some of those frequencies can belong to other systems that will slow down the scan process a lot. Best to only keep CC and alternate CC.

/Ubbe

Didn't think of that. Good to know. Thanks! Now I need to come up with a new workflow to more easily update CCs.

 

[JoeBearcat]

Oh, Okay. That sounds like what is happening and goes along with what I observed. It confirms there is no big advantage to trying to remove frequencies that are not CC or alternate CC when downloading updates from the Full database or from RR. Thanks.

The benefit is when it loses the control channel. It is faster to evaluate four frequencies than say 12.

 

[GROL]

The benefit is when it loses the control channel. It is faster to evaluate four frequencies than say 12.

I hadn't thought about what happens when the control channel is lost. It would certainly be helpful if it were possible to filter out all but control channels when downloading from RR or when copying from the Full Database. Once I get all 240 sites paired down to just Control channels and alternates, it will be easy enough to manually update if a site changes, but I will still have to do all updates manually. Of course this does not help Zip Code scanning or GPS with the full database.

 

[JoeBearcat]

GPS scanning works with FLs too. (provided you have the location data set)

 

[GROL]

GPS scanning works with FLs too. (provided you have the location data set)

Yes. I do use GPS for FLs. But if I were in a new state or city I did not have time to custom program, then of course there would be the issue with the Full Database when I had to enable it. Not a major issue as it does not come up often. But it would be nice if you could filter out downloads to only load the Control Channels. Still not a major issue, but does cause a bit more work. Thanks for the response!