[BC] Inovonics AM 222 and DEQ2496 h elp to setup

[DHultsman5@aol.com]

In a message dated 12/22/05 9:54:57 P.M. Central Standard Time,  
thebeaver32 at hotmail.com writes:

>Please anyone how know about the use of Inovonics Am 222  and  the DEQ2496 
>Ultracurve Pro, working  together. I use them in my  AM 1610 1Kw station.  I 
>use this two units like my Audio  processing system .  I'm using  a DBD 
>On-Air audio Analogic  audio console  which is feeding one chanel of the 
>DEQ2496 as  first step in DSP audio Processing; The exit of the DEQ2496 with 
>pad  Bridge resistor attenuator (2 of 10kohms and 2 of 27kohms external  
>mounted for balance)  feeds a DBX266XL GATE COMPRESSOR , the gate  
>compressor is used as upcoming amplifier gain to +12dbm, the DBX266xl  feeds 
>the Inovonics model 222 "NRSC" (AM Audio Processor) which is  feeding the 
>1KW CCA AM transmitter
>
>Basically my problem  radicates in the negative pics, they are still at the 
>same level of  the positive ones no rectification and even between 60-80% of 
 
>modulaton the negative pics remains there at the same level and times  of 
>the positive ones( those are showing in my TFT AM Modulation  Meter).
>
>The sound coming for my transmitter is good enough,  Deep strong and with 
>body  , you wont find any difference with  comercial and well digital 
>processed AM  radiostations.
>
>Regards an Merry  christmas.
>
>Werner



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1.)  Be sure all audio is correctly phased from mike to transmitter  input.
2.)  You may want to use a scope with your mod monitor. Calibrate or  use a 
china marker on the screen for 100% positive.
3.)  Remove all processing except the Inovonics AM Peak  limiter.
4.)  Darn,  I wish I could remember some records that had good  peaks that I 
used for testing.
      but essentially be sure your polarity is  correct, modulator bias's are 
correct, tubes are
      new and start out checking for  assymetry.  Some of the Innvonics units 
had a peak shifter and  others had a positive peak adjustment or a negative 
clipper.  Play with  these for the best performance.  When you reinstall you 
other processing  you may find that there are less positive peaks probably due 
the  symmetrical design of the amplifiers..  
 
D