how to butcher a cobra 25 ltd.... 1. cut D9 - found near the front of the chassis by the on- off control this is the major key modification. 2. remove tuning slug in coil L 10 found at the back of the chassis by the output transitor. 3. Replace resistor R40 (1/8th watt- red, red, black 22ohms ) with a 220 to 270 ohm 1/2 watt resistor. 220 and 270 ohm resistors are available at Radio shack for about 50 cents.. Failing to do this after cutting D9 will overdrive the linear amp and burn it out. 4. Spread the end coils of L8 about 1/16" each. L8 found at the back of the chassis by the output connector. | ||||| | looks kind of like this when done. 5. Cut resistor R38 ( 1000 ohms 1/2 watt Brown, black, red ) . R38 is located just in front of the output fitting.