Quick and easy. Simple and stealthy. Just a Binding post to BNC connector. Add ear buds and drop the radio in a bag. Run close call and survey the RF landscape around you with no one even knowing. Don’t over think it. Just take a walk around and see what you get.
See the SIGINT for Everyone article for more information and article links on collecting radio frequency information.
See also Dialtone’s Low Budget Signal Intercept Kit Part 1