How many RTL-SDRs is too many? Apparently I've collected quite a few through various projects over the years and am now pushing a single antenna feed through to 4 free units for capture with sdrtrunk. I wish they did more than 2mhz at a time, VHF coverage eats them up! Whats my best bet for cheapish multi-mhz band coverage? Primarily using this to cover Fire/EMS VHF and a bit of airband. #sdr