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" <[email protected]> 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 <[email protected]> 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:[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]
