File = 56KEC05A.BIN

This eprom image is for the Error Correcting Coded
version of the WA4DSY 56kb modem.  It is required to
access the Atlanta area 56KB user LAN (44.36.16.**).

The binary data in 56KEC05A.BIN must be burned into
a 27C256 EPROM with an access speed not slower than
150 ns.

NOTE: Be sure to turn dip switch #3 ON to enable ECC mode.


The following table list the modem IF frequencies
available in the EPROM.


 Memory   TX Freq   RX Freq   RC Code   Tuneup Freq
 ______   _______   _______   _______   ___________
   0      29.050    29.050      20       29.050
   1      29.150    29.150      20       29.150
   2      28.400    29.850      20       29.850
   3      29.850    28.400      20       28.400
   4      28.550    29.550      20       29.550
   5      29.550    28.550      20       28.550
   6      29.250    29.250      20       29.250
   7      29.350    29.350      20       29.350

Notes: 
       Memory 0 can be used with a 432 mhz transverter to
       access the 56KB backbone on 433.05 mhz.


       Memory 1 is for the Lanier Mtn bit repeater
       on 440.150/445.150 using a 440 mhz transverter
       with 2 LOs.  The LOs are switched between tx and rx
       for the 5 mhz split.

       The 440 mhz transverter crystals are 104.000 mhz for receive
       and 102.750 mhz for transmit.  These are 5th overtone series resonate
       crystals.


       Memory 2 is for the Sweat Mtn. bit repeater 
       on 222.400/223.850 using a 222 mhz transverter.



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