PK232.2

These modifications apply to PK-232s with serial numbers under 1000.
 
Four simple hardware modifications improve the PK-232's performance.
 
1.  Change C54 from:  0.1 mfd 10% mylar   (increase low-frequency  rolloff)
                 to: 0.01 mfd 10% mylar
 
2.  Change U16 from:  74LS04   (do this only if bbRAM does NOT hold memory)
                 to:  74HC14
 
3.  Change R35 from:  20K 5%   (improve VHF/Morse sensitivity)
                 to:  39K 5%
 
4.  Add:  0.047mfd mylar 10% in series with R79 (same as above)
 
***Downloaded from compuserve 4/30/88 by KQ1K***
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