This LOT is one RF Bay, Inc. New Frequency Doubler 0.01-1.0GHz Input, 0.02-2.0GHz Output, Model Number: FDR-1-2 with SMA Female Connector.
Detail Spec on Web as follows:
http://www.rfbayinc.com/upload/files/fdr/fdr-1-2.pdf
Other RF Bay, Inc. Product:
http://rfbayinc.com/