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From: ewb@raybed2.UUCP (EUGENE BALINSKI)
Newsgroups: rec.ham-radio,sci.electronics
Subject: More Mods for the PRO 2004 !!
Keywords: More Fun, TURBO, S Meter
Message-ID: <1193@raybed2.UUCP>
Date: 7 Jul 88 18:29:59 GMT
Organization: Raytheon Co., Bedford, Mass.
Lines: 38


  From Monitoring Times July 88 Volume7 number 7, Page 93


   That's right folks, more mods for the '2004. Remember these mods are
done at your own risk. Have fun.
 
   In a previous posting the question of enabling 520 to 760 MHz came up.
Apparently this info was false. It cannot be done. (at least at this writing)
But  adding an "S" meter is even easier than previously thought. Pin 10
on the IF amplifier is an "S" meter output. With the  proper bridge or
meter buffer/amplifier an "S" meter is reality. But wait, there's more !!

   Turbo scan for the 2004 ??? Yes !! Someone has realized that if you 
replace the present 7.37 MHz ceramic resonator CX501, with a 10.7 MHz
ceramic resonator it really boosts the scan/search speed! The present
resonator is soldered between pins 29 and 30 of the CPU (IC-503). Rumor
has it that a 10.00 MHz computer xtal will work just fine. Note the effect
of the speed mod on weak signal performance is presently unknown.
  
Hopefully someone can/will verify that these mods work. (Bob Parnass where are
you ???) Good Listening. 
                                                          73
                                                     Gene Balinski
                                                        WA1UXA


                     

P.S. Be sure to UNPLUG the radio before OPENING the case !!!!
P.S.P.S. For further info see Monitoring Times Mag. I strongly suggest that
         you subscribe to this mag and read the article on the mods.


Monitoring Times Magazine
P.O Box 98
Brasstown, N.C. 28902  
PH 704-837-9200