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How many SDR's will I need to listen to this system. I have 2 SDR-RTL. V4 Quickstart dongles and it seems like its struggling bad.
Thanks
Thanks
How many SDR's will I need to listen to this system.
- Thread starter RadioChief55
- Start date
Looks like you need 3.
2 to cover the Control channels, and 1 to cover the talk channels.
But it all depends on which control channels are actually being used. All the systems I monitor list between 3 and 5 control channels, but only 1 is used at the present time, the others are just backups in case the main CC fails, and will carry normal traffic on them as needed. So I just program in the one that is being used and ignore the others till I would have to switch to one of them if the main CC failed.
So in your case the 2 sdr's will be locked into the 773 and 856-857 range and not be able to switch to the 769-770 range of the talk channels, and you are missing out on transmissions. Add the 3 sdr and you should get everything. (this based on SDRTrunk)
What system are you trying to monitor?
2 to cover the Control channels, and 1 to cover the talk channels.
But it all depends on which control channels are actually being used. All the systems I monitor list between 3 and 5 control channels, but only 1 is used at the present time, the others are just backups in case the main CC fails, and will carry normal traffic on them as needed. So I just program in the one that is being used and ignore the others till I would have to switch to one of them if the main CC failed.
So in your case the 2 sdr's will be locked into the 773 and 856-857 range and not be able to switch to the 769-770 range of the talk channels, and you are missing out on transmissions. Add the 3 sdr and you should get everything. (this based on SDRTrunk)
What system are you trying to monitor?
3 to cover the frequencies you show.
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This is the site I'm trying to get on the NJICS. I am using SDRTrunk.
New Jersey Interoperability Communications System (NJICS) Site: Burlington/Ocean Simulcast
New Jersey Interoperability Communications System (NJICS) Site: Burlington/Ocean Simulcast Details
www.radioreference.com
Then 3 are needed to cover it.
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And how about this one? All their frequencies are CCs, How can I figure out how many dongles I'll need? I know its like 2.4 mg offset, but I don't know what numbers in the frequencies? I really want to figure this all out and get running some of my feed on SDR's
Thanks
Thanks
Monmouth County Public Safety Site: South Simulcast
Monmouth County Public Safety Site: South Simulcast Details
www.radioreference.com
Here's a handy site to copy and paste the frequencies of a site and generate the centre frequencies and give you how many dongles you'll be needing:
Might help if you name the software your looking to use. DSDPlus FastLane can do it with one dongle and I believe OP25 Boatbod will also.
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SDRTrunk
wtp
Member
at some point you might want to get a scanner...
Similar site that I used: iCAD TR Config Generator
wtp
Member
i just wanted to avoid the "i have 12 SDRs running, and now i want to hear"....
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I have 3 SDS200s, 1 SDS100, 1 G5, 1 BCD325P2, 2 396XTs, 2 325XLs, 2 996P2s, 1 BCD996T, 4 796ds, 3 785XTLs, some digital radio shack scanner, 5 780XLTs, an old Relm a Motorola APX8000 all band and so many other Motorola VHS and UHF radios. I think I'm good with the scanners, I want to learn the SDS hoby now.
wtp
Member
oops !
OK, actually i understand.
OK, actually i understand.
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