It could also be another device that uses a crystal frequency of 14.31818 MHz. That is also a very popular Microcontroller frequency. You might also want to look at the computer video card since it probably generates this frequency. Maintaining a very stable frequency is much easier when you divide down from a stable source. If you have an RGB monitor, especially one that is CRT-based, then this is a likely culprit.
Jack Brindle, W6FB On Apr 24, 2011, at 5:02 PM, Phil Kane wrote: > On 4/24/2011 1:39 PM, Grant Youngman wrote: > >>> I don't have the problem on the 2nd or 3rd harmonic of 3579 KHz, >>> but do on have a tone between about 14.316 and 14.318 MHz. > >> It's the 4th harmonic > > Digital TV receivers do not use a 3.57954528+ MHz subcarrier > like NTSC (analog) receivers do. In digital TV protocols color > information is carried in the digital data stream. > > -- 73 de K2ASP - Phil Kane > Elecraft K2/100 s/n 5402 > > ______________________________________________________________ > 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 ______________________________________________________________ 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
