How many amps would a 15watt radio draw in the transmit mode with 12 volt being supplied to radio?

To calculate the current (in amps) drawn by a 15-watt radio in transmit mode with a 12-volt power supply, you can use the following formula:

Current (I) = Power (P) / Voltage (V)

Given:

Power (P) = 15 watts

Voltage (V) = 12 volts

Substituting the values into the formula:

I = 15 watts / 12 volts

I ≈ 1.25 amps

Therefore, the 15-watt radio would draw approximately 1.25 amps of current in the transmit mode when supplied with 12 volts.