How are the 10811 OCXOs serially numbered ? I ask this, because from a photo on eBay I saw a 10811-60111 with serial number 2850A47273, a rather long number. The 10811-60111 in my 5328 counter has as S/N the number A03912, which looks like it belongs to a different numbering scheme. Anybody knows ? TNX. 73 Alberto I2PHD