Jeff,

While not normally recommended, as a test try working SO-50 in half duplex rather than full duplex and see what happens. There is a very peculiar buffer issue which can cause bad audio in full duplex. If that is it, there is a work around.

Question about your comment about building an FM repeater filter. Are you referring to the Transmit tab, Transmit Filter?

73s,

Alan WA4SCA

<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Jeff <Sent: Thursday, April 14, 2016 5:52 PM <To: Amsat amsat-bb@amsat.org <Subject: [amsat-bb] Flex 5000a FM tone issues < <I?m working my way through setting up my Flex 5000 for satellites. I?m very happy with the <performance on the linear bird?s , but having some issues with AO-85, and SO-50. After getting some <bad audio reports on SO-50 yesterday I tried to work the problem out with someone on a local repeater <who was familiar with my voice. After a few minutes it became very clear that it was a CTCSS tone <issue as simplex performance was excellent. I thought about this a minute and came to the realization <that there might be a TX filter in play, and discovered, yes it was set to a default of 150 to 2700. <Obliviously not FM values. So just before the last pass of AO-85 I quickly built an FM RPTR filter of <50 to 4k and saved it. It worked a bit better on the pass but I still had obvious issues. Anyone have any <ideas what the issue might be? I?m thinking a tone level issue, but after goggling I found issues with <CTCSS was too HIGH of a level. Any suggestions welcome... < <73 Jeff kb2m < < <_______________________________________________ <Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions expressed <are solely those of the author, and do not reflect the official views of AMSAT-NA. <Not an AMSAT-NA member? Join now to support the amateur satellite program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb