/diy/ - Do It Yourself

I have an RTL-SDR and I've been trying to capture signals with unknown frequencies. It's quite difficult to do so since I only have a 2MHz window on SDRsharp and I have to go searching trough all the possible frequencies until I find it.

Is there any way to find which frequency a nearby (30 meter max) signal has? In theory the signal should be stronger than the rest and easily differentiated, but the SDR can't detect it unless I tune to that particular frequency.

I have a rigol dz1054 scope, but it only goes up to 100Mhz, and the signals I'm looking for are in the range of 300 to 900Mhz.

What I'm looking for is some kind of spectrum analyzer / frequency detector that can tell me the frequency of a nearby signal.

Sup /ohm/ I see no ham radio thread so I thought I'd ask here. Want to get into SDR, is this the best choice for begginers?