Need the R.F. Gain knob for the SX-25. This is one of the small, black, round knobs common to the SX-20, SX-20R, SX-24, etc. Reply to Jim Tolar with cost of knob and shipping to Houston, Tx. Regards, W5SQE at iname.com --------------------------------------------------- Get free personalized email at http://www.iname.com