daredevil1
Member
- Joined
- Dec 11, 2006
- Messages
- 61
What's a good RSSI and noise level for VHF P25? I current have -75dBm RSSI.
As Ubbe said, that value should be fine.What's a good RSSI and noise level for VHF P25? I current have -75dBm RSSI.
I've been reading that anything below -80dBm is considered a very weak signal. -100dBm would be practically no signal. However my SDS200 shows any signal that reads -95dBm or higher as five bars of signal strength. I'm thinking that the signal strength readings on these scanners are very inaccurate and should probably be ignored, and one would be much better off by monitoring the D-ERROR as kruser has suggested.It works fine down to -100dBm, if that's the true value. The noise should preferably be below 500.
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SDS100: - Global Auto Filter Vs. Global Attenuation
I was reading through some previous posts and I am unclear on the difference between Global Auto Filter and Global Attenuation. What I have been doing recently is scanning groups of frequencies in sequential order to determine what DMR Color Codes are being used. On a few UHF frequencies in...forums.radioreference.com
/Ubbe
You are correct! The RSSI readings seem to be wrong more than they are right. Especially if you are an RF rich urban environment with tons of local transmitters nearby in the bands you would monitor. I've read from others that the readings behave fairly well in rural ares.I've been reading that anything below -80dBm is considered a very weak signal. -100dBm would be practically no signal. However my SDS200 shows any signal that reads -95dBm or higher as five bars of signal strength. I'm thinking that the signal strength readings on these scanners are very inaccurate and should probably be ignored, and one would be much better off by monitoring the D-ERROR as kruser has suggested.