Power Supply for a Clansman PRC-320 Transceiver

Recycling an old battery and the cord from a mic, you can make a perfectly working psu with speaker. I will power it from a 13.8v power supply and use an upconverter to deliver 27v. https://www.amazon.es/gp/product/B00H... No ripple noise. Perfectly fine. You can use some power switches and leds to make it look better. I also used a spare Battery indicator from a Clansman radio.