Finding the right frequency for your FM transmitter is always a pain, specially when you visit new cities. Fortunately a Qt based utility called E.F.F.(or Empty Frequencies Finder) from BLIZZARD will now put an end to that problem, making EFF a must have for your phone.
E.F.F. (Empty Frequencies Finder) is a utility that lets you choose a range (87.5 FM – 108.0 FM) to scan from, for empty/unused frequencies, using the receiver of N900 and headphones as its antenna. For example you can use this utility to find empty frequencies, so you can easily transmit from your N900 to your radio. If you are not satisfied with the emptiness of the frequency scanning results you can select between modes, to find a better one.
Th app hasn’t found its way to the repositories yet, but you can download the .deb file from here (direct link) and install it manually. You will need to plug your N900 headphones in so that the app can use them as an antenna for the radio. Your N900 also must be running the PR 1.3 firmware.
I would love to see this utility come out for Symbian^3 devices as well, may be Qt can help.
Hat tip to the ever useful @mwkn for the tip!