Had to go to our distribution center this morning, first thing, and yesterday I assembled my comparative audio kit that lets me record one scanner to left and another scanner to right channel on my PC. So, I thought I'd take the opportunity to make a nice, long recording of both the SDS100 and the BCD436HP monitoring the same site on the same system at the same time.
System is the Fort Worth Regional Radio System. Site monitored is the Northeast Tarrant site, which is widely reported to have some of the worst simulcast problems.
Generally the drive is from Kennedale to Downtown Fort Worth. Up to Roanoke. Then across and down through the middle of the mid-cities (detoured out of my way to make that area) and finally to Irving, just north of DFW airport.
Some of these areas are very weak signal, so neither scanner did perfect, there. Downtown FTW is dense RF. Area of the Mid Cities should be worst for simulcast (and that would be around the 1:20:00-1:40:00 area of the full-length recording).
Had someone do a hard brake in front of me that tossed everything into the floorboard . So, you'll note that the left channel goes bad at the end. I think the audio cable partially unplugged. You can clearly see where this happens in the pic, below.
Left channel (top row of the pic) is BCD436HP. Right channel is SDS100.
I saved two versions of the audio.
Here is a pic of what the compressed version looks like in Audacity. The top signal is the BCD436HP, the bottom is the SDS100.
These were each running on their own antenna. The scanners were laying face up in the passenger seat (i.e. real world condition ). BCD436HP had an 800 MHz optimized antenna on it...SDS100 had the stock antenna.
Scanners were in ID Search mode holding on the Northeast Tarrant site.
System is the Fort Worth Regional Radio System. Site monitored is the Northeast Tarrant site, which is widely reported to have some of the worst simulcast problems.
Generally the drive is from Kennedale to Downtown Fort Worth. Up to Roanoke. Then across and down through the middle of the mid-cities (detoured out of my way to make that area) and finally to Irving, just north of DFW airport.
Some of these areas are very weak signal, so neither scanner did perfect, there. Downtown FTW is dense RF. Area of the Mid Cities should be worst for simulcast (and that would be around the 1:20:00-1:40:00 area of the full-length recording).
Had someone do a hard brake in front of me that tossed everything into the floorboard . So, you'll note that the left channel goes bad at the end. I think the audio cable partially unplugged. You can clearly see where this happens in the pic, below.
Left channel (top row of the pic) is BCD436HP. Right channel is SDS100.
I saved two versions of the audio.
- http://info.uniden.com/twiki/pub/PartnerWeb/VideoFolder/NE_Tarrant_Full.mp3 is the full-length real-time version (1 hour 58 minutes)
- http://info.uniden.com/twiki/pub/PartnerWeb/VideoFolder/NE_Tarrant_Compressed.mp3 is a version where I removed all dead air segments, reducing the length to about 19 1/2 minutes.
Here is a pic of what the compressed version looks like in Audacity. The top signal is the BCD436HP, the bottom is the SDS100.
These were each running on their own antenna. The scanners were laying face up in the passenger seat (i.e. real world condition ). BCD436HP had an 800 MHz optimized antenna on it...SDS100 had the stock antenna.
Scanners were in ID Search mode holding on the Northeast Tarrant site.