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Author Topic: FTDX10 MIC, PROC, AMC help  (Read 378 times)

N0AKX

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FTDX10 MIC, PROC, AMC help
« on: July 18, 2021, 10:06:05 AM »

Hi,

I hope I am not in the correct forum but if you own a FTDX10 and know a lot about it, could you please briefly explain what MIC EQ, PROC Level, and AMV Level are and how they are used?

Cho
N0AKX
« Last Edit: July 18, 2021, 10:08:19 AM by N0AKX »
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KM4KWK

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Re: FTDX10 MIC, PROC, AMC help
« Reply #1 on: July 18, 2021, 08:05:26 PM »

Check out N4HNH Radio on YouTube. You asked this question in another forum area and I responded to you there too. He has a YouTube channel in which he goes through and explains these functions of the FTDX10 as well as many other functions and capabilities of this radio. Watch his videos and then just play with the settings. It is a wonderful radio and easy to operate.

73
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KX3DX

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Re: FTDX10 MIC, PROC, AMC help
« Reply #2 on: July 31, 2021, 02:14:40 PM »

I'm not a fan of everything you see on YouTube....

Try this - set your mic gain high - say 75.  Set the processor to zero.  Speak into the mic and adjust the AMC control so that the ALC meter deflects to three quarters of the ALC Bar (~S8) with normal speech.  Then back the mic gain down until the ALC meter deflects just a tiny bit less than the previous step.  Then add in 10 to 15 db of compression with the processor control.  Typical values values for AMC are 40 to 60 and 25 to 35 for the processor.  Where the mic value ends up depends on your mic, voice and how far from the mic you are.  Generally in the 25 to 75 range.  The best way to do all this is looking at your RF envelope on a scope.  Of course, I just saw a YouTube that pretty much says RF envelope testing is useless.  It is not.

BTW - any ALC meter deflection means the RF envelope is reaching full PEP output.  The RF meter on the FTdx-10 is an averaging meter with no peak hold - it will typically show 35W or so with normal speech on SSB.  Higher if you run the processor up higher, but probably never more than 50W.

Did I mention RF envelope testing with a scope?  It's the best PEP "meter".

Dave
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KX2T

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Re: FTDX10 MIC, PROC, AMC help
« Reply #3 on: August 13, 2021, 07:26:15 AM »

The AMC control on the 10 is kind of like a safe guard for Yaesu's very aggressive ALC circuit. In past radio's like the FTDX3000 and 5000 if you set the alc to what the manual called full scale or were the top bar on the ALC scale was the radio would be right at were you would be creating poor IMD on your output. In the FTDX10 and the 101D/101MP they came up with this new control which is called AMC but it has its limitations, if set around the 50 level this will hold back on your alc peaks to the point were flat toping will not occur and these newer radio's have been tested with better IMD performance than even when they had Class A amp setting on the 5000. I find best setting for my Ten is mic at 40 proc at 40 and amc at 50, never go above 50 on the amc cause I have run into hams who set it way high and the radio ends up not only sounding like crap but it gets nasty on the spectrum display as well. As far as the parametric EQ your on your own depending on ones voice characteristics but these newer radio's can be made to sound really nice and clean IMD wise.
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