Hardware - Improvement to improve the quality of information reception on the modem.

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(C) ZEVS MDM 271-6936
                                          
         Hello to all moderators!           
   I bring to your attention an improvement,
allowing to improve the quality of reception
information on the modem. The idea is
the following:                                
   The circuit contains an operational amplifier
(OU), which has some given
gain.   If telephone
your connection is quite bad and this
the opamp has a large coefficient
amplification, then mistakes are inevitable here due to
false positive of the latter. Therefore
gain needs to be reduced
op-amp by reducing the cutter resistance,
hanging between the 2nd and 6th leg of this
opamp.  According to the circuit there is a resistance
value of about 300 kOhm. I reduced it to 75
kOhm  Part of the diagram (from ENERGY#7) is given
on below.  So, set up your mods
we go ahead!                             
                                          
 ----┐┴                
                         ┬ 0.1M           
                         ├----------┐     
      change │ ┬4 │     
   per resistor ----> 330 █ ┌-┴--┐ │     
      75 kOhm kOhm █ │ 2├-┘     
                     ----┴---┤6 3├-┐     
                         DA1 └-┬--┘ │     
 ---------┘7 │     
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