Thanks, excellent work! 73 from David GM4JJJ
> On 3 Nov 2016, at 16:08, Mark Goldberg <marklgoldb...@gmail.com> wrote: > > 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 gm4...@yahoo.co.uk ______________________________________________________________ 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
