RM Italy KL503 Honest Full Review

[@indianachrisUDX1313]

I have been running the RM Italy 300P. Seems to work OK so so far. I don't think They are the Best Quality though

[@TheElectronMan]

I am sure there 100's of better amps out there but for under 300.00 I think they are good amp, sure we could go with Ameritron for 5K but in my opinion it's a lot of bang for the buck.

[@MD.Assrafulalom-nl3fh]

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[@TheElectronMan]

@MD.Assrafulalom-nl3fh Thanks, yeah, I just do it for fun and to help folks out. I'm not really trying to be some big channel.

[@michaelmuldoon441]

Hi bud sorry to bother you I got the kl503 can I run it on a 30amp power supply with a cobra 148 or does it need it's own power supply cheers

[@TheElectronMan]

@michaelmuldoon441 it should be fine the Cobra will not pull that much maybe 2amps on SSB and the RM on max pulls a little less than 30 amps at worse on max it might drop a few watts which is no going to hurt anything. Personally, I like 3 on th RM, which is around 200 watts and like 20 amps.

[@wloop7659]

just my 2 cents but i think a 100w deadkey is going to be too much for longevity on AM and will never achieve 4:1 peak to deadkey watts. i may understand this all wrong not trying to be negative Happy Turkey day thanks for the vids

[@TheElectronMan]

I don't feel you are being negative at all; I enjoy discussions on this topic. From my experience, these amplifiers are designed as low-input drive amps with a pre-driver built in, making them ideal for standard CB radios with a maximum deadkey of 6 watts. However, as I mentioned in the video, radios putting out more than standard CB wattage, such as some 10-meter radios, are too much for these amplifiers since they have a pre-driver section, it is the same as using a small amp to drive a larger amp but it's built in. Regarding the carrier, setting it to 5 or 6 with over a 200-watt deadkey on AM seems excessive and could negatively impact the longevity of the amplifier but I think 100 watts is fine. From my testing, 100 watts appears to be the sweet spot. Personally, I run mine on setting 3, which swings around 200 watts, and that works perfectly for me. On SSB, I use settings 1 or 2, which deliver over 200 watts, and that’s just right for my needs.

[@wloop7659]

@@TheElectronMan from how i understand it the 4:1 peak to carrier watts also effects modulation i could be all wet tho lol... ill keep listening for you on the band

[@TheElectronMan]

@@wloop7659 You are correct on the 4:1, but RF amplifiers are designed to handle a certain input power range while maintaining linearity. That is where the 6 watts input to desired output rating comes from. But yes overdriving an amplifier by exceeding the recommended peak-to-carrier ratio can push it out of its linear range, causing harmonic distortion and interference with adjacent frequencies.