I live 6 km air-line from the DVB-T transmitters removed on the 1st floor. The reception is also 6 meters behind the window deep in space nor trouble.
Changing the USB connection is only possible if the computer is part of the time downloading or drove up. You have to know, but does not interfere.
Picture and sound quality are very good. The operation only the keyboard is simple:
Arrow up / down switches on the transmitter.
cmd + 0 shows full-screen, +1, +2, +3 smaller image sizes.
cmd + I shows transmitter information, signal strength as a bar graph and maturities.
cmd + T brings teletext, solo and also appears in the TV picture.
cmd + G brings a comfortable menu for the electronic program guide, from the directly shipments can be marked for recording. In addition, the list of recorded programs is reached.
The most practical tool on live TV: the spacebar! Stops the program and record it, to re-pressing the spacebar and continue looking. Ideal for short breaks. Also back and fast forward with arrow keys and Shift + Pfleiltasten is possible, the speeds can be set up in the settings as desired. I chose 5 seconds and 20 seconds.
One hour recording requires 2 gigabytes of memory for MacOS. The size of the buffer in live TV can also be freely selected in the settings.
All in all, reliable, lightweight Hardware, convenient operation. And of course, does not cost any data volume. Top!