Greetings - I have a KTCXO3, a Chinese copy, and the standard oscillator. I tested the standard and Chinese ones against WWV at 10 MHz using the Freq Cal mode in WSJT-X over a four hour period. This isn't exactly a laboratory grade test, but is the best I can do.
The total error for the Chinese TCXO was 1.26 Hz Total error for the stock oscillator was 0.98 Hz I'll test the KTCXO3 later today. I'm not a math major, but that looks like about 0.1PPM error. Tests were run after the K3s had been on for a few hours. I don't have the tools to measure phase noise. Would having a local with a panadaptor look at my transmitted signal using the different oscillators be sufficient? This is the Chinese oscillator I bought from Ebay: https://www.ebay.com/itm/KTCXO-3-Compatible-Elecraft-K3-TCXO-1-PPM-High-Stab ility-Ref-Osc-Compatible/182814802678?hash=item2a909c82f6:g:7qsAAOSwWr5Z2Y7t ---- 73, Mike Cizek W0VTT -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Mark Goldberg Sent: Wednesday, 10 March, 2021 08:56 To: Elecraft Mailing List <[email protected]> Subject: Re: [Elecraft] Now looking for a K3S KTCXO3-1 If the Chinese TCXOs for the K3 are anything like the ones for Kenwood I have measured, they exhibit much higher phase noise. That will result in much increased transmit phase noise. That will interfere with anyone trying to listen close to you in location and frequency. The K3 is a good neighbor, which is one of the reasons it is prized for DXpeditions and Multi Radio contest stations. 73, Mark W7MLG On Wed, Mar 10, 2021, 7:33 AM Wes <[email protected]> wrote: > If it mattered to me I would give the Chinese version a shot. > > Wes N7WS > > On 3/10/2021 6:18 AM, Gary Peterson wrote: > > A replacement K3S KTCXO3-1 is no longer available from Elecraft. > > Does > anyone have a stable KTCXO3-1, surplus to their needs, that they would > consider selling? > > Even a standard, plus or minus 5 ppm TCXO might possibly be an > improvement. > > > > There are also some, alleged, KTCXO3-1 oscillator modules for sale > > on > eBay for about 40 bucks. Has anyone had experience with any of these? > > > > Thanks, in advance, for any advice, opinions or admonishments. > > > > Gary, K0CX > > ______________________________________________________________ > 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 Message delivered to > [email protected] ______________________________________________________________ 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 Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
