In holdover mode (e.g., no antenna connected), accuracy is typically 7x10^-10 for the Thunderbolt. So, still quite good. However, I don't recall if the typical holdover specs require that the GPS-DO first initially attain lock, then the antenna can be removed.
Paul, W9AC ----- Original Message ----- From: "Phil Kane" <k2...@kanafi.org> To: "Paul Christensen" <w...@arrl.net> Sent: Tuesday, June 21, 2011 11:30 AM Subject: Re: [Elecraft] Suggestions for 10 MHz Signal Source for the K3? > On 6/21/2011 6:49 AM, Paul Christensen wrote: > >> Locking the GPS-DO is as easy as throwing a tiny >> GPS antenna out the window. > > True, but I was referring to applications where the standard is > used as a "stand alone" device. My present comm room has > little or no GPS or WWVB access because it is 3/4 underground. > Were I to re-install it, I probably would have added a 14th > antenna to the roof for GPS.... :-) > > That's what happens when one's experience was in the pre-GPS > era...... > > -- 73 de K2ASP - Phil Kane > Elecraft K2/100 s/n 5402 > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
