Here is the link. Forgot to add it at the end. Posting on a small screen will get you.
https://sites.google.com/site/markstcxomeasurements/ 73, Mark W7MLG On Nov 3, 2016 8:43 AM, "Mark Goldberg" <marklgoldb...@gmail.com> wrote: > Since you brought this up, I will post a link to my analysis of the > knockoff "TCXOs" for the Kenwoods. You do get what you pay for, and you > can't even buy good parts for what they charge. > > The added phase noise of the Chinese parts increases the phase noise of > the TX by about 10 dB 15 kHz away. It also is full of spurs. > > Basically, if you were on a DXpedition with 100W, you would splatter and > interfere like you had a kilowatt. By the way, the K3S with the new > synthesizer is even better in this regard. It is at least 20 dB lower which > would be more like if you had 1 W. > > Only the good RX filters in the Kenwood radio prevent degradation in RMDR > on most bands. They basically made a really bad synthesizer, and made it > look like a TCXO. There is a lot more to it than just being on frequency > > 73, > W7MLG > > On Nov 2, 2016 3:05 PM, "Michael Walker" <va...@portcredit.net> wrote: > >> I bought a TCXO on ebay for my TS480 (SO-3). I installed it and then put >> the RF deck in the oven and then outside (it was winter). >> >> I went through the Alignment calibration to see how far it drifted. I >> can't remember the exact number, but it was within limits in terms of PPM. >> Which was great, as my TS480 sits outside all winter on the remote base >> and >> that is as low as -30C at times. It has been there for 7 years now (or >> more). >> >> For me, it was as test for $30 including shipping direct to my door. It >> looked exactly like the SO-3 @ $135 plus shipping. >> >> So, before you declare the entire electronics world as poison, you do need >> to do your homework. >> >> Don't forget, this is an experimental hobby. >> >> Try Something.... >> >> Mike va3mw >> >> On Wed, Nov 2, 2016 at 5:58 PM, Fred Jensen <k6...@foothill.net> wrote: >> >> > From my short experience with LiIon batteries from China ["Blue Bombs"], >> > I'd save up my bucks and get the real Elecraft filters. >> > >> > 73, >> > >> > Fred K6DGW >> > - Sparks NV DM09dn >> > >> > - Northern California Contest Club >> > - CU in the Cal QSO Party 7-8 Oct 2017 >> > - www.cqp.org >> > >> > On 11/2/2016 9:44 AM, AL7CR wrote: >> > >> >> I am tempted to try one of the Chinese made filters listed for sale on >> >> Ebay. Does anyone have any experience with using one? I am >> >> considering the 1.8khz. >> >> >> > >> > ______________________________________________________________ >> > 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 >> > Message delivered to va...@portcredit.net >> > >> ______________________________________________________________ >> 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 >> Message delivered to marklgoldb...@gmail.com >> > ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
