If anyone has an interest, there is at least one HP 4352A VCO/PLL analyzer left on ebay. $200 OBO. http://www.ebay.com/itm/HP-Agilent-4352A-VCO-PPL-Signal-Analyzer-Generator-Module-10MHz-3GHz-RF-4352S-/131847308679?hash=item1eb2b64587:g:95cAAOSwZJlXMrpQ The one I bought for $130 was missing the detector and power splitter. Replacing the splitter with a home rolled one and the detector with a similar, though far less expensive part has returned it to the land of the functioning. Next step, characterize some of the 10811's I have around here. ;) No financial interest except helping out a fellow time nut as those before have helped me.