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I have been using a KL-503 for about two years now "base" and have never got a report of distorted audio am/ssb I have done some radio checks with local bases around 30 to 50 miles away and tried with amp on and off and everyone says the db gain is unbelievable and my audio gets crazy loud but clear as a bell I have an Malaysia built 148GTL I have turned the audio up and with a new hand held power mic with echo can't think of the name right now but they are brand new and have a selectable noise cancelling feature and cost at least 65.00. I often get asked to turn it down because I am so much louder than everyone else it causes problems in their home and they are talking with guys 5 or less miles away and I'm doin 45 miles away this loud audio really works when talking with my mobils with some times very low signals and getting over engine noise power lines etc.I get some real good wattage out of it I think mainly because my am wattage is 2 to 3 watts dk.on am I swing from 2/3 watts to about 15/16 watts with audio giving me I think a side band type of pep wattage my ssb is only a little higher doing 18 watts out the radio. I also run just barely under 15 volts into it also. I have been powering the 503 with a cheap but good filtered Mega watt 400 which is some where about 33 amps constant I have purchased a QJE 50 amp supply stating they do 48 amps constant and 52 amps surge with a adjustable voltage setting of 9 to 15 volts. I will probably crank the voltage on this one two can't wait to see any improvements in output!

<blockquote data-quote="hammer0630" data-source="post: 440686" data-attributes="member: 21751"><p>I have been using a KL-503 for about two years now &quot;base&quot; and have never got a report of distorted audio am/ssb&nbsp; I have done some radio checks with local bases around 30 to 50 miles away and tried with amp on and off and everyone says the db gain is unbelievable and my audio gets crazy loud but clear as a bell I have an Malaysia built 148GTL I have turned the audio up and with a new hand held power mic with echo can&#039;t think of the name right now but they are brand new and have a selectable noise cancelling feature and cost at least 65.00. I often get asked to turn it down because I am so much louder than everyone else it causes problems in their home and they are talking with guys 5 or less miles away and I&#039;m doin 45 miles away this loud audio really works when talking with my mobils with some times very low signals and getting over engine noise power lines etc.I get some real good wattage out of it I think mainly because my am wattage is 2 to 3 watts dk.on am I swing from 2/3 watts to about 15/16 watts with audio giving me I think a side band type of pep wattage my ssb is only a little higher doing 18 watts out the radio. I also run just barely under 15 volts into it also. I have been powering the 503 with a cheap but good filtered Mega watt 400 which is some where about 33 amps constant I have purchased a QJE 50 amp supply stating they do 48 amps constant and 52 amps surge with a adjustable voltage setting of 9 to 15 volts. I will probably crank the voltage on this one two can&#039;t wait to see any improvements in output!</p></blockquote><p></p>

[QUOTE="hammer0630, post: 440686, member: 21751"] I have been using a KL-503 for about two years now "base" and have never got a report of distorted audio am/ssb I have done some radio checks with local bases around 30 to 50 miles away and tried with amp on and off and everyone says the db gain is unbelievable and my audio gets crazy loud but clear as a bell I have an Malaysia built 148GTL I have turned the audio up and with a new hand held power mic with echo can't think of the name right now but they are brand new and have a selectable noise cancelling feature and cost at least 65.00. I often get asked to turn it down because I am so much louder than everyone else it causes problems in their home and they are talking with guys 5 or less miles away and I'm doin 45 miles away this loud audio really works when talking with my mobils with some times very low signals and getting over engine noise power lines etc.I get some real good wattage out of it I think mainly because my am wattage is 2 to 3 watts dk.on am I swing from 2/3 watts to about 15/16 watts with audio giving me I think a side band type of pep wattage my ssb is only a little higher doing 18 watts out the radio. I also run just barely under 15 volts into it also. I have been powering the 503 with a cheap but good filtered Mega watt 400 which is some where about 33 amps constant I have purchased a QJE 50 amp supply stating they do 48 amps constant and 52 amps surge with a adjustable voltage setting of 9 to 15 volts. I will probably crank the voltage on this one two can't wait to see any improvements in output! [/QUOTE]

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