Hello Joe,
You might try e-bay and look for an H500 that is being sold for parts. You may have to watch for awhile but they do appear from time to time. You might also try
http://www.gn4radios.com.
Jeff
: Does anybody have a door, or lid, for a Zenith H500 Transoceanic complete with brass colored catch & loop antenna (frame aerial UK)? or know where I could find one.