I have two Eimac 3-500Z tubes for sale.They belonged to a friend who
replaced them with two RF Parts 3-500Z. They are guaranteed to have 80 to 90
percent output. They do have some time on them, but are still good. They are
missing the heat sinks on the tops. If you have a pair of bad tubes, you
can remove the heat sinks on them to use on these tubes. They will be
shipped in the foam cushioned boxes used for the RF Parts tubes. Price is
$100 for the pair. Or $60 each plus shipping. Thanks, Charlie Hugg, K5MBX