KL203P Mobile

The KL-203P is a very compact amplifier and a solid performer. I must reiterate the point that these are low drive amps. I achieve the best performance for my needs at or below 2W drive and typically operate these at ~1.5W input. At 1.5W drive it generates ~40W AM deadkey and @3.0W average power in it yields ~55W average (not PEP) on SSB. I own a few TC-300 amps and actually prefer these smaller amps for mobile use. We work in some very remote locations in the western U.S. where mobile phone coverage is often still very poor so having reasonable RF power, especially in emergencies, is essential.

Great lil amp will be buying another one thank you copper

Great lil amp thank you copper

love it had it 1 year bought 2 more

I want to start off by saying that this amp doesn't need much drive and driving it with more power than 3-4 watts will do nothing more than splattering your signal. I have a few of the 203P amps with hundreds of hours of use and NEVER blew one up, if you had your radio peaked then don't even think about connecting this amp until you turn your dead key way down, you will smoke this amp if you don't. I hear people complaining that this amp is crap and that their amp quit working just after installing it, can you guess why? Yep, they used their peaked radio or didn't check their SWR but they still blame the amp? One of the amps is used with my Yaesu FT-817, I drive it with 2.5 watts in and get 90 watts AM out, and 5 watts in I get a full 200 watts out on SSB with a very clean signal from 80 to 10 meters. I don't need band filtering but I still use it!