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I have a kl 203p, i think it's the same thing as a ad-203 just external and has a housing that doubles as a heatsink, it is so small that it could be bolted right on top of the radio, granted it would cover most of the speaker... I think I paid like $65 while it was on sale. Good little amp for my experiments. I have heard this 10 meter amp will key on 11 meters but I cannot & will not confirm. (It has a "wide" range of frequency coverage)

I wonder if this amp is going to oscillate on me or give me problems, the relay only clicks to activate the unit when the radio is keyed. Has a pre-amp too if you want to hear the noise floor louder. Sometimes the pre-amp can help pull in a distant station that otherwise would not have been heard through the static.

If its for a cb the carrier will have to be lowered, one could add a diode inline to the one leaving the modulation transformer if it's that type of radio (Most cobra mobiles). Also check your countries regulations first, I cannot recommend something that may get you in trouble...

<blockquote data-quote="LeapFrog" data-source="post: 557309" data-attributes="member: 46697">I have a kl 203p, i think it&#039;s the same thing as a ad-203 just external and has a housing that doubles as a heatsink, it is so small that it could be bolted right on top of the radio, granted it would cover most of the speaker...&nbsp; I think I paid like $65 while it was on sale. Good little amp for my experiments. I have heard this 10 meter amp will key on 11 meters but I cannot &amp; will not confirm. (It has a &quot;wide&quot; range of frequency coverage)I wonder if this amp is going to oscillate on me or give me problems, the relay only clicks to activate the unit when the radio is keyed. Has a pre-amp too if you want to hear the noise floor louder. Sometimes the pre-amp can help pull in a distant station that otherwise would not have been heard through the static.If its for a cb the carrier will have to be lowered, one could add a diode inline to the one leaving the modulation transformer if it&#039;s that type of radio (Most cobra mobiles). Also check your countries regulations first, I cannot recommend something that may get you in trouble...</blockquote>

[QUOTE="LeapFrog, post: 557309, member: 46697"] I have a kl 203p, i think it's the same thing as a ad-203 just external and has a housing that doubles as a heatsink, it is so small that it could be bolted right on top of the radio, granted it would cover most of the speaker... I think I paid like $65 while it was on sale. Good little amp for my experiments. I have heard this 10 meter amp will key on 11 meters but I cannot & will not confirm. (It has a "wide" range of frequency coverage) I wonder if this amp is going to oscillate on me or give me problems, the relay only clicks to activate the unit when the radio is keyed. Has a pre-amp too if you want to hear the[B] noise floor louder[/B]. Sometimes the pre-amp can help pull in a distant station that otherwise would not have been heard through the static. If its for a cb the carrier will have to be lowered, one could add a diode inline to the one leaving the modulation transformer if it's that type of radio (Most cobra mobiles). [SIZE=3]Also check your countries regulations first, I cannot recommend something that may get you in trouble...[/SIZE] [/QUOTE]

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