Do WiFi APs on same channel still interfere at a farther range (-70+)?

I am aware that the most common channels for the 2.4Ghz band are (1 ,6 ,11). They are non-overlapping. I also know that channel 6 is the default for most routers, if not set to auto. I am wondering whether or not WiFi interference is relevant if there are many APs on the same channel, … Read more

Increase network bandwidth between 2 servers

Is it possible to increase the network bandwidth between 2 servers on Windows Server 2008 and Windows 7 ? For example : Use 2 Gigabit NICs on each computer to have 2 Gigabits/sec between 2 machines ? (I know it’s possible to load balance traffic from a computer to a group of others base on … Read more

RHN Satellite / Spacewalk custom channels, best practice?

I’m currently setting up RHN Satellite, and all works well. I’m in the process of creating custom channels, since we have certain software which should be available for all nodes of satellite, e.g. puppet, facter, subversion, php (newer version than present in base). I’ve tried to find documentation on best practices on this. How should … Read more

Freebsd change default Internet channel route

I have two Internet channel and Gateway on freebsd. When I switch channel with the command route change default chan2, the command netstat -nr shows changed default route. But traceroute shows that the packets go through the old route chan1. Example: $netstat -nr Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default xxx.xxx.183.54 … Read more

What happens when wifi channels overlap?

There are many pages on the web advising the use of wifi channels 1, 6 and 11 only, so that your wifi channels don’t overlap. Obviously this makes sense when you only have your network do deal with, but in most urban areas there are now a plethora of other networks, all using the same … Read more

ffmpeg merge videos including one with alpha transparency with mp3 audio

I have two video tracks (one with alpha transparency and both without audio) and an audio file, I need to put them all together with the same beginning. so: I only managed to mix the two videos together with this code: ffmpeg -i “alpha.mov” -i “background.mov” -filter_complex “nullsrc=size=1920×1080 [base]; [0:v] setpts=PTS-STARTPTS [top]; [1:v] setpts=PTS-STARTPTS [bottom]; … Read more

ImageMagick real Alpha channel ON

I’m trying to create the image with Alpha channel from the second image. I have used this cmd command: magick composite Background.tif Alpha.tif -compose multiply -alpha on Result.tif This command creates combined tif, but alpha channel is empty. Would you be able to provide me with any help? Thank you very much. Answer AttributionSource : … Read more