> The 1PPM TCXO of the K3 is supposed to support the ability to be calibrated > over a range of temperatures so it doesn't need the rig to be on all the > time to improve stability. Unfortunately, unless I missed it in one of the > updates, the firmware support for this is still "on the list". > > Just as some folks obsess over receiver performance specs, others like to > feel that their frequency readout is "spot on". As with many things in this > hobby, whether or not it is really necessary to know your frequency to that > level of accuracy is irrelevant. :) ***************************************************************************
The 1 PPM TCXO provides 1 PPM stability now with no further firmware support. What's pending is a firmware program that takes the temp vs. freq data that came with your 1 PPM TCXO and uses it to compensate for temperature changes to make the TCXO stability *better* than 1 ppm. As for the accuracy fetish, I suspect that's more of a side-effect of digital displays, especially when they are viewed by people who do not have the ability to tell what is relevant and what isn't. We've had several "dust-ups" here from people convinced their DMM was defective because it read 1.005 ohms when connected across a 1k 1% resistor. It's easy to get into it even knowing the absurdity of it all. Long ago I replaced my digital watch with a conventional dial watch because it bugged me to see it say 4:03:32 when all I cared about was that it was a "about 4 o'clock". I think the final straw for me was when I discovered myself checking it against WWV to see if it had gained or lost a second since yesterday. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
