Pro505XL with KL 203 P 

The output of these amps is full of harmonics, which means that your transmitting on many frequencies all at the same time, not what you want to do, particularly if you're doing something that is illegal. Consider using a low pass filter between the amp and the your antenna, this will remove the harmonics.

It’s recommended to insert an extra inline fuse on the amp if you are connecting to a cigarette connection!

The President Richard and the KL203P are 2 of the best buys in our hobby right now the Dick is a 50 watt rig out the box I turned it down via Engineers menu to 2.2 watt dead key and i'm seeing the same 180 pep as shown on Rooster cb channel. CB radio magazine YT channel does the best demo on the Dick I've seen.

If you go into the engineer's menu on the President Richard the max setting for AM modulation is 220 If you turn it up to 210 the Dick will do 50 watts pep (five zero) that's damn impressive 100% recommend the Dick and KL203P I turned minze down for the amp but keep in mind the 'power settings' you need to adjust the FM output to match AM output The nearest rig to this is a Stryker 447 and its about twice the price $.

All of the 505 xl radios must not be the same inside. Mine only has 2 adjustments, squelch and S meter.

The uniden pro 510 has a Anl

The Uniden 505 is good stuff!!! Very tough design, and only necc. features. BUT...recieve is too sensitive!!! Streetlights, powerlines, fastfood drivethrus, any distributor capped vehicle, gets this thing barking. Where do I adjust rx sensitivity? Like an rf gain? Thanks for all the intel on this vid. Stock or upgrade mic?

what did you not read IT IS A $ 60.00 XLT C B radio 40 channel running at 13.5 amps

Decrease Power Increase deviation Equals slightly garbled voice over lower power. So why do it?? Also, the KL203P will happily handle 6 to 8 watts on am and fm, and 10 to 15 watts PEP on ssb. As a guide the output from the 203p is average of 10x the input.

I don't recommend more than 1 watt imput with this amp. 2 watts or more will cause it to splatter, and probably also cause a squeal in a cheap radio. I have a KL203P connected to a President McKinley radio, with the power turned down to 1 watt, it seems to work fine, no squeal, and will not overdrive the amp and burn it out. This amp uses MOSFETS, and they are pretty fragile.

I dont get it: this is the second (US)video about the Kl203p amp Saying only 2 watt The specs says Max 10 Watt input. Being causious I set my dead key/ Radio to 8 to 8,5 watts Wich gives me dependant at frequency between 80 and 110 watts output! It doesnt blow up! This is on Fm . On AM I the variable output of the radio drops , so I also turn it a bit up till 8 watts

Why would you say it's ok to use a metal screwdriver ??

Hi Mr. Steve! this exact video was such a great guide to using both units and I had great luck with the 505xl on its own, but when I added the KL203P, I get a gnarly squeal on transmit. I have an SWR of 1:1.05, and a short coax jumper from radio to amp. they're both powered off of a 30A 12V circuit in my car and I have it set at exactly 2W radio output as suggested. when I bypass the amp, I don't get a squeal and the signal is super clean. when the amp is on however, I can almost hear the squeal from the radio itself. I've read some solutions like an RF choke on the power leads or mic cord but was wondering if you had any thoughts. Thank you in advance!

I have a manual adjustment for power so running my 203 I turn it down to 2 to 2.5 watts dead key sounds right to me. Would do a model on one if I had one. Peace great info.

If you need a CB to keep up with traffic on the road this ones fine with a removable antenna but I wouldn't have that for normal communications . At least a Cobra 29 LTD classic is better than that back pocket radio lol

Do I need to tune my radio before I use one of these

Fm doesn't works?

The Amp is on top of the radio in the beginning now the Amp is on the bottom of the radio 🤔🤔🤔

Jo

would not buy a Radio without sideband.

Variable power, necessary. Wrong radio.

If you got a HAM license you could use 1.5 KW legally.