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eHam Forums => Contesting => Topic started by: NX5MK on January 25, 2014, 11:56:32 PM



Title: BARTG RTTY
Post by: NX5MK on January 25, 2014, 11:56:32 PM
Many BARTG RTTY contesters tonight sent out very dirty signals, wiping out the complete passband with their overdriven signals, interrupting other contesters as well as established nets.

Respectfully request reading http://www.rttycontesting.com/writelog/rttystarter/starter_rttyetiquette.htm (http://www.rttycontesting.com/writelog/rttystarter/starter_rttyetiquette.htm)

73 de Marcus NX5MK


Title: RE: BARTG RTTY
Post by: AF4RK on January 31, 2014, 07:43:14 AM
I operated in the BARTG as time permitted. Only about 50 Q's but I didn't see one over driven signal. Perhaps your receiver is at fault. N1MM with FLDIGI. The waterfall is going to show anybody seriously over driving the audio. NO, I don't like MMTTY. Doesn't work as well for me as FLDIGI.  I quit using MMTTY as soon as I could switch to FLDIGI. There were some seriously loud signals but very clean.


Title: RE: BARTG RTTY
Post by: K8AC on February 10, 2014, 04:27:26 PM
Not sure what your point is.  What do you define as an "overdriven signal"?  If one is using AFSK, and ran the audio drive up too high, then you might arrive at an "overdriven" state and generate extraneous spurs, but if using FSK, then that is a non-issue.  Most knowledgeable RTTY contesters use FSK.


Title: RE: BARTG RTTY
Post by: SV1XV on February 11, 2014, 07:43:51 AM
If you notice too many overdriven signals etc, it is possibly the result of a noise blaker or other processing circuit in your receiver.