Well, if you are at all a physics or radio-electronics buff such as myself, then you will likely love this quaint little museum.
This is the kind of place that I would never in a million years bother to travel out of my way to visit, but I ended up having to stay for two days at an airport hotel near BWI airport in Linthicum Heights, MD in late 2013 due to the interactions of snow with my planned air travel. One afternoon, while taking a walk in the area near my hotel, I stumbled upon this quaint and rather small museum. Actually, I first noticed the museum only because of the massive old WWII-era radar microwave antennas prominently displayed on the lawn in front of the building -- they can be easily seen from well over a block away.
If you are considering a visit to this museum, allow me to advise you up front that despite the fact that it bears the name "National Electronics Museum", the museum really does not reflect the full breadth and depth of the history of electronics in our world today. Rather, since this is a somewhat low-budget small museum and a partly-volunteer effort that has been largely funded by a major defense electronics contracting company, the contents of the museum facility, while nonetheless very interesting, are heavily slanted toward defense electronics (i.e., radar, military applications of radio and radar, etc.) and, to a lesser-extent, toward aviation and space radio-electronics (i.e., avionics, military aircraft avionics, satellite telecommunications, rocketry telecommunications, space communications, etc.).
As a result of all of these afore-mentioned facts, the museum does not cover the full breadth and depth of the history of radio and electronics, and the simple fact is that were such a museum attempt to do so, it would of necessity require a building at least 6 times the size of the current building, and a budget at least 20 times that of the budget for this little museum as it currently stands today. So, this little museum is fine as it is, and very interesting, but it does not offer a really comprehensive overview of the history of radio and electronics, and that is okay!
My favorite experience: I loved the outdoor displays of radar and other large microwave antennas from across the history of radar and radio astronomy, including some rare non-parabolic dish types, including curtain arrays!
Lastly, let me tell you clearly and firmly that you DEFINITELY will want to strictly avoid a visit to this quaint little place unless you are, deep in your heart, a geek, or a mad scientist, or a radio-electronics buff, or a physics nut! read more