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Flex 5000 and ESSB

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Old 01-16-2012, 05:22 AM
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Default Flex 5000 and ESSB


Flex 5000 and Smooth Audio with Rack Gear

I just upgraded from a Flex SDR-1000 to the Flex 5000A and it was probably the best upgrade I have ever done. The abundance of new options on the 5000 over the 1000 is amazing.

I am somewhat of an audiophile and have a complete audio rack system that was set up for the SDR-1000, I thought it would be pretty much plug and play, well I was mistaken. The 5000 is a bit pickier on whats coming into the radio. I plugged in to the back of the 5000 and left all of the PSDR settings at factory default with all the processing turned off, that was my first mistake. I had horrible pumping and scratchiness on the audio. I then found a wonderful set up article by W1AEX, Rob Connelly. Rob explains in detail how to set up the PSDR gain settings. His recommendations worked to an extent but I still had a bit of scratch, so this is how I managed to get my audio straightened out.

I did a bit of searching on the Flex knowledge base and found that the TX Buffers for phone on the DSP tab needed to be set for 4096 so I made that change. Then I had to get the mic gain on the main view of PSDR to work correctly set at 35, which is Ĺ scale. I opened the mixer with the mic gain set at 35 and set the meter to MIC and tried to get the meter reading right around 0. I had to enable the mic boost to keep the mixer setting at the Ĺ way point or just a touch less. If you use more than that you tend to pick up that nasty scratch in the audio. I donít use the leveler and the ALC settings are at the default menu settings. My ALC was between -5 and 0 on the meter. My audio is now clean and smooth just as it had been on my SDR-1000. Audio reports were excellent and I am now a happy audiophile with a Flex 5000.

My Rack gear consists of the following;

AKG Preception 220 Condenser Michrophone with POP Filter
Behringer UltraGain PRO Mic-2200
Behringer Ultra Curve PRO DEQ-2496 Parametric EQ
Behringer UltraFex PRO EX3200 Ultraband sound enhancer
Behringer Virtualizer PRO DSP2024P Effect processor

This set up works the best for my voice characteristics and what really sounds good to me, your experiences may vary.
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Old 01-16-2012, 03:59 PM
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Nice write-up. Can you do any recordings of it so we can hear what it sounds like?

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Old 01-16-2012, 04:08 PM
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Originally Posted by Moleculo View Post
Nice write-up. Can you do any recordings of it so we can hear what it sounds like?
Yes I can, The flex built in recorder will record the processed audio but the files are kind of large. I'll have to find a program to make them smaller without sacrificing the quality. Any suggestions ?? The flex saves them as wav files.
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Old 01-16-2012, 04:46 PM
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I converted a test audio clip to mp3, there isn't much degradation in the audio with the conversion but there is a non registered logo that's a bit annoying.

Let me know what ya think. I don't have the best voice for radio but then again I'm not a broadcaster. Its natural and sounds just like me
Attached Files
File Type: mp3 W1MSG Test.mp3 (999.3 KB, 72 views)
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Old 01-17-2012, 10:53 AM
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Well, if it sounds like that on my receive end, that would be superb!
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Old 01-17-2012, 11:03 AM
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Quote:
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Well, if it sounds like that on my receive end, that would be superb!
It should sound pretty close Mike, I had a couple of people do some recordings and play them back over the air and it pretty much sounds just like that.

I also did a little work on my article and put it in PDF format with some graphics. Not alot of folks bother with rack gear on a flex, buy hey ya gotta have some kind of knobs to play with..
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File Type: pdf Flex 5k and Rack Gear.pdf (140.5 KB, 37 views)
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Old 01-17-2012, 11:47 AM
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What kind of control do you have for TX bandwidth? What setting where you running with that sample?
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Old 01-17-2012, 12:34 PM
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Quote:
Originally Posted by Klondike Mike View Post
What kind of control do you have for TX bandwidth? What setting where you running with that sample?
The recording was done at a 5k wide transmit profile. The Flex 1000 and 5000 are capable of up to 10k wide on SSB 20k on Double SSB, AM, and FM. Its very flexible when it comes to TX profiles. The 1500 and 3000 are restricted to narrower profiles but I dont know exactly what the limits are. Here is a picture of my TX Profile setup.

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