SDS100/SDS200: No Receive on new P25 frequency on SDS200

[lej512]

I purchased an SDS100 and an SDS200 a couple of months ago. I've been programming mobiles, portables, pagers and scanners for many years. These were a little different from what I'm accustomed to but I got them to do what I want them to do. Recently, a local PD (about three miles away) switched from PL to P25. I got the NAC codes from the radio guy that took my place after I retired. I'm 100% sure I have the frequencies correct. I'm 100% sure I have the NAC codes correct plus my SDS100 sounds perfect while the SDS200 receives nothing on that channel. I even dumped the SDS100 codeplug into the SDS200 and stil nothing. Any suggestions?

 

[dave3825]

Conventional or trunked? Post a link to the agency in the database. You also only need the NAC if another agency in your reception range is on the same freq.

 

[lej512]

Conventional or trunked? Post a link to the agency in the database. You also only need the NAC if another agency in your reception range is on the same freq.

Conventional.

 

[dave3825]

Post a link to the agency in the database

 

[dave3825]

Nevermind. Irrelevant, missed the part that it works on the sds 100

I'm 100% sure I have the NAC codes correct plus my SDS100 sounds perfect while the SDS200 receives nothing on that channel. I even dumped the SDS100 codeplug into the SDS200 and stil nothing.

So same programming on both radios but reception on only one. What ant is on each radio? Are both radios in the same room? If you manually scroll to the said channel on the 200 and stay parked there, does the 200 show any activity when the 100 is receiving?

 

[werinshades]

I own both, and have found the SDS 200 to be more sensitive on some systems. Try the filters and possibly the attenuator.

 

[lej512]

SDS100 using the recomended upgraded antenna from Remtronix. SDS200 is on a Diamond D130J base antenna. Both radios in the same room. SDS100 is crystal clear and the SDS200 shows nothing. Squelch set at 2. The SDS200 sits right next to my Icom IC-R8600 which also receives crystal clear. Could that cause an issue?

 

[lej512]

Tried the attenuator, made no difference.

 

[werinshades]

Filters need to be tried too only on that system, not globally.

 

[lej512]

I have also tried reading/savig/writing with Uniden Sentinel, ProScan and ARC536 Pro. Makes no difference. The other problem is this is the only P25 channel in my area so I really don't have a way to rule out a technical problem with the SDS200.

 

[OpenSquelch]

I have also tried reading/savig/writing with Uniden Sentinel, ProScan and ARC536 Pro. Makes no difference. The other problem is this is the only P25 channel in my area so I really don't have a way to rule out a technical problem with the SDS200.

Have you tried setting the NAC to ignore, just to see if it makes a difference?

 

[trentbob]

Make sure all of your service types are turned on, when it comes from the factory only certain service types are enabled. For now turn them all on.

 

[lej512]

Units are side by side parked on the same channel. 100 receives. 200 does not. I have a Whistler WS-1065 that I will try tomorrow. I've about given up for today.

 

[RMason]

Have you tried manually tuning to to the frequency rather than scanning it from a favorite list?

Press Channel to hold on any Channel.
Enter the Frequency/ID and press Channel.

 

[trentbob]

Filters need to be tried too only on that system, not globally.

This is Sage advice. Global filters can be temporarily used on a system or conventional object just to see if there is an improvement between all the different filters or no filter at all. Avoid Auto filter, it will slow down the scanning

If you find that a certain filter makes a difference then return Global filter to normal, it's default setting. You want to leave Global on the default setting because it affects every object on the radio and although it helps your system it could compromise reception on other objects. As Shades says..

Take the filter that seems to work better and go into site options of the system and apply that filter to each site that you are using that way all the other objects on the radio won't be compromised by global filter but just the system sites will have the better filter applied.

 

[werinshades]

Try the SDS 200's stock antenna, and see if that makes a difference. If so, then you know you have too much antenna and have to make adjustments as we mentioned.

 

[dmfalk]

Have you tried setting the NAC to ignore, just to see if it makes a difference?

More accurately, set NAC to "search". It should work, as it does for me.

 

[trentbob]

Original poster, you have been asked several times, what are you trying to listen to, it looks like you are in Warren County New York which appears to be a lot of VHF High.

I think you mentioned it's a conventional system? That would make NAC irrelevant.

We are throwing spit balls against the wall to see if they stick. What exactly are you trying to listen to in Queensbury New York... Warren County?

Without that information we can't look at the database and see what it is that you are trying to pick up.

If you don't know the system you can take a screenshot of your radio and maybe it will tell us something.

 

[trentbob]

Okay there are five trunk systems in Warren County and they appear to be DMR and nxdn and not public service. The sheriff, EMS and Fire are individual VHF high frequencies with PL tones and not part of any system.

The same goes for Queensbury fire and EMS so it appears as if you use the county sheriff as your police.

Unless you give us more information it's very difficult to try to help you.

 

[trentbob]

I think I may have found it. It is a p25 conventional frequency that is a patch of F1 dispatch of Warren County Sheriff's Department.

I hope the original poster returns to confirm this.