OK, guys, thanks for the input. The software guys have the ball to figure out why the 300 Hz high pass is (apparently) not doing it's job.
--- Graham == On Wed, May 18, 2011 at 3:41 PM, Lee Mushel <[email protected]> wrote: > Ted, Graham, > > Please hurry and figure this out. That CTCSS tone is driving me nuts..... > > There must be some filter we have to turn on or adjust..... > > 73 > > Lee K9WRU > ----- Original Message ----- From: "Graham Haddock" <[email protected]> > To: "Ted Leonard" <[email protected]> > Cc: <[email protected]> > Sent: Wednesday, May 18, 2011 1:22 PM > Subject: Re: [FlexEdge] More on 6M hum > > > > Ted: >> >> There is a 300 Hz High pass filter in the audio path. Tones below 150 Hz >> should be attenuated >> by over 40 dB. >> >> Where are you getting the audio from? Are you using the audio output jack >> on the radio? >> >> --- Graham >> >> == >> >> On Wed, May 18, 2011 at 1:32 PM, Ted Leonard <[email protected]> wrote: >> >> Hi Graham, >>> Thank you for the speedy reply. My Neighbor and I have tried all sorts of >>> AGC settings to no avail as far as the hum is concerned. >>> If we turn off the tone the hum goes away and audio is fine. My repeater >>> sends out 127.3 at about 350 Hz level for PL most receivers of course >>> strip >>> it off >>> so you don't hear it. >>> If we go to simplex on 6 FM and use the tone the hum is there, turn off >>> the >>> tone and hum is gone. Playing with AGC settings has >>> not even reduced the hum as long as a tone is present. >>> My humble thought is the low end needs to be filtered out then all will >>> be >>> well. >>> >>> Ted W3VG >>> >>> _______________________________________________ >>> Flexedge mailing list >>> [email protected] >>> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >>> This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is >>> used >>> for posting topics related to SDR software development and >>> experimentalist >>> who are using beta versions of the software. >>> >>> _______________________________________________ >> Flexedge mailing list >> [email protected] >> http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz >> This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is >> used for posting topics related to SDR software development and >> experimentalist who are using beta versions of the software. >> >> > _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
