Check the listing for details. Galaxy 2547 MOSFET upgrade kit. Condition: New. Listed at 24.99 USD. This modification kit contains all the parts you need to install a MOSFET in place of the original bipolar final transistor in your Galaxy 2547. This kit will replace the final with a MOSFET. Detailed instructions are included. The final transistor installed in most CB and many Amateur radios were discontinued and are rapidly diminishing. They are hard to find and very pricey. If your final has been damaged now is the time to make the conversion to a MOSFET. All high powered devices are changing to MOSFETs. They will be widely available for many years to come. In most cases they produce more power and in all cases they give more modulation. On most radios the time to make the change is about 1.5 hours. You need only some basic electronics knowledge and good soldering skills. Don't be fooled by those cheap kits. These Fairchild MOSFETs are very rugged and forgiving. This modification kit is ONLY for radios that originally had transistor finals.