From cbfsb!att!ucbvax!ihlpm.UUCP!rats Fri Sep 27 15:01:40 EDT 1991 Article: 10099 of rec.radio.shortwave Path: cbfsb!att!ucbvax!ihlpm.UUCP!rats From: rats@ihlpm.UUCP Newsgroups: rec.radio.shortwave Subject: Grove Enterprises PRO-2006 Modification Sheet Message-ID: <9109271438.AA02936@ucbvax.Berkeley.EDU> Date: 27 Sep 91 14:38:21 GMT Sender: daemon@ucbvax.BERKELEY.EDU Lines: 66 PRO-2006 Modifications NOTE: The Electronic Communications Privacy Act of 1986 makes it unlawful to monitor mobile telephones, including cellular. The following modification is intended only to restore continuous 760-1300 MHz coverage as originally provided by the design of the PRO-2006 microprocessor. BE SURE TO TEST YOUR PRO-2006 FULLY BEFORE ATTEMPTING THIS MODIFICATION. ANY MODIFICATION MAY VOID YOUR WARRENTY. 824-851, 869-896 MHz Frequency Restoration Tools Required: small Phillips screwdriver, small wire cutters. Procedure: With the power cord unplugged, remove the two rear cabinet screws holding the upper cover. Lift off the upper cover, being careful not to stretch the speaker leads. Examine the inner, right-hand-corner of the front panel to find two glass diodes, labelled D503 (upper diode) and D502 (lower diode). Using the clippers, very carefully snip the visible lead of the lower diode (D502) at its bend and slightly separate the cut ends. If it is ever necessary to send the radio back for warrenty repair, the diode leads should be carefully resoldered. Reassemble, plug in AC cord, turn on scanner, and press RESET. Keyboard Beep Delete With the top cover removed as described above, locate connector CN3, a 15-pin connector with colored wires at the front of the main circuit board. There are two precedures which will stop the beep tone from being heard through the speaker; read both to decide which procedure you want to follow. (1) Find the center grey wire coming from CN3 and cut it midway to disable the beep tone. You may wish to solder a resistor in series to reduce the beep volume, a trimpot to vary the volume of the beep tone, or a minature switch to choose between beep and no beep. (or) (2) Using a pair of needle-nose pliers, CAREFULLY pry the plug from CN3, revealing a row of pins. Locate the center pin (#8) which corresponds to the grey wire and bend it down flat, disabling the beep circuit. Reinsert the plug. The pin may be erected again later to restore the beep tone if desired. This completes the restoration procedure. Reattach the cover and replace the screws. WARRANTY REPAIR Should it be necessary during the first year of ownership of your new PRO-2006 to exercise your warrenty, it should be carefully double-boxed (as you received it) and returned to Grove Enterprises. Be sure to include a copy of the original bill to establish warranty privileges. You must prepay only shipping and insurance; return shipping and insurance to you will be paid by the dealer. Grove Enterprises, P.O. Box 98, 140 Dogbranch Road Brasstown, NC; 1-704-837-9200