![]() However, using the numbers that are available via the netsh command, he is seeing a 12.5 to 10 dB improvement, which clearly isn't possible with the published 1% = 0.5 dB estimate. So, his two antennas vary in gain by about 3.5 to 3 dB. McNeil's own numbers, he shows the change from a "5.5-6 dBi dipole antenna" to his "9 dBi biquad antenna" as a jump from "60-65%" to "85%". Sadly, that can't be the case, as I've measured myself in the lab with calibrated attenuators. o-rssi-dbm) suggest that 1% step is equal to 0.5 dB. ![]() With the netsh command, most write ups on it (for instance. I've got Vistumbler running on several Windows PCs and with different horsepowers and the loop time varies quite a bit, as Phil points out. Vistumbler uses the netsh command as the way to grab the WLAN information. It should be in dBm and as estimated by the receiver itself, not munged up and neutered by middleware. And as a career-long RF engineer, ham radio operator, and wireless telecom systems engineer, that's no way to monitor a wireless system. So what you get there is technically an RSSI, not an RSS. Sadly, one of the things MS chose to do was to make the default signal level reporting in percent, not in dBm. You can see it yourself if you start a command line instance and run "netsh". I had to give up on NetStumbler because it had not been updated since 2004 (?) at version 0.4.0, and wouldn't work correctly with any of many cards (or USB wi-fi dongle) I'd purchased since about 2008.īecause of the vastly increased number of and increased complexity of WLAN interfaces, Microsoft, from Windows Vista forward, established a common developer interface, called netsh, for access to the WLAN device(s). Alas, the number and complexity of WLAN interfaces has grown enormously since 15 years ago when I first started wardriving with my Orinoco Gold Wi-Fi card. It could do some pretty neat things, like get the card driver's own estimate of RSS. It was a very nice software program and (I believe) worked directly with the WLAN card drivers. ![]() If what you mean by "Network Stumbler" is NetStumbler, I used to run that over a decade ago. ![]()
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