copied from the internet:
From: ulki@hpbbrd.bbn.hp.com (Ulrich Kienzle)
Newsgroups: rec.radio.amateur.misc
Subject: Re: YAESU FT26 Mods?

I found the following in a local PR-BBS.

           RX-TX expanded range for YAESU FT26 handheld.
           ---------------------------------------------

     Make FT26 open and locate straps 1 to 8 on the "CONTROL UNIT". Now you
must close the following straps : 1, 3, 5, 7, 8. Close your FT26 and turn the
power on while keeping at the same time the "TONE" and "REV" depressed.

     Now you need reprogramming low and high frequency edge :

     When "1" is blinking enter RX lowedge and then push "D/MR"
     ....."2"...................RX high.................."D/MR"
     ....."3"...................TX low..................."D/MR"
     ....."4"...................TX high.................."D/MR"

     You can reprogram your "ARS" like in the OPERATING MANUAL page 21.
     My choice was 136 to 180 MHZ in RX-TX and it work very good!

                          F1LOU @ ON7RC
=========================================================================
Note: I haven't tried or verified this, proceed at your own risk.  And
do not transmit outside of legal bands!   WA2ISE
/EX