I was also involved in the beta test. I was/am using the "K3 as supplied" 5ppm oscillator and a rubidium 10MHz source and I managed to maintain 2Hz accuracy at 50.26MHz (40ppB)which is fine for the VHF/microwave weak signal modes I needed it for.
Dave ww2r Message: 8 Date: Fri, 20 May 2011 19:47:33 -0700 (PDT) From: Dan AE9K <[email protected]> Subject: Re: [Elecraft] Installed K3EXREF To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=us-ascii Ed, Thanks for the response. Let me clarify my question. I'm wondering if the KTCXO3 0.5 ppm oscillator can be omitted and still get great results with the K3EXREF and the standard 5 ppm oscillator. This is of interest because I intend to acquire the K3EXREF but do not have the KTCXO3 and would prefer not to buy it if it doesn't add any benefit. My logic: If the K3EXREF adjusts the TCXO (via REF CAL) every 4 seconds, then why not let it adjust the standard K3 TCXO instead of having it adjust the optional KTCXO3 oscillator? Even though the two oscillators differ by an order of magnitude in their error, does that error make a difference when the K3EXREF adjustments are every four seconds? ps - During your beta testing were you using the standard K3 5 ppm oscillator or the KTCXO3 0.5 ppm oscillator? I didn't find mention of that on your web site. Dan AE9K ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
