Keith, That's great news, thank you, and just what I was looking for:-) During my earlier searches I did come across an Mtron press release from 2010 detailing collaboration between themselves and JLT but it stated that the first product from that would be the Mtron 9107 so I just assumed that any prior numbering such as the M9101 would be a uniquely Mtron product and didn't think to investigate further. I must remember not to take things for granted:-) Regards, and thanks again, Nigel GM8PZR In a message dated 22/08/2015 18:19:14 GMT Daylight Time, keith.loiselle@gmail.com writes: Nigel, The MtronPTI M9101 is just a private labeled Jackson Labs FireFly-IIA. You can download the Jackson Labs manual for the FireFly-IIA at the support section of our website here: http://www.jackson-labs.com/index.php/support Keith Keith On Thu, Aug 20, 2015 at 8:54 AM, GandalfG8--- via time-nuts <_time-nuts@febo.com_ (mailto:time-nuts@febo.com) > wrote: I've been trying to locate a manual for the MtronPTI M9101 series GPSDOs, an M9103 series manual would probably also be ok. There are references and links online to a PDF manuals section on the MtronPTI web site but those links just bring up errors and they seem to have removed everything other than the data sheets. If anybody has a copy they can share, or perhaps point me in the right direction to where I might find one, that would be very much appreciated. Regards Nigel GN8PZR _______________________________________________ time-nuts mailing list -- _time-nuts@febo.com_ (mailto:time-nuts@febo.com) To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.