For a little more investment you can get hacked version with a TCXO and it is able to receive almost 0 to IIRC 28MHz. It is a 2.8MHz spectrum analyzer although energy readings are not a feature.

However cities are terribly noisy environments so loop antennas should work better for most people. Most amateur radio guides assume you are at least a homeowner but that is not realistic among people interested in a 20 eurodollar receiver.