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These are my entries: http://www.worldwidedx.com/amplifiers/99053-multi-band-low-pass-filter-kit-unfiltered-amps.html http://www.worldwidedx.com/amplifiers/93982-quick-dirty-class-ab-mod-kl300p.html I was under the impression that each link above will equate to one entry. Is that correct?

This may be a silly question, but are you 100% sure you've got it hooked up correctly, ie transciever and antenna are connected correctly? Also, in my KL300p's there is a group of 4 pins on the board. These are to enable 10-11m functionality. IIRC pins 1 and 2 must be shorted together. According...

I think they should be all good with a single device, since each device is actually a push-pull pair of FET dies in one package.

I've yet to see a 2x1446 amp make more than around 160W PEP, and that's pushing them to the max.. ie huge amounts of splatter and junk in the signal.

Given that these are 30-50V devices, I think that powering the amp would be the biggest challenge. It would take quite a beefy power source to run just one of these to full power, much less several. I do still think that these offer some real cost-effectiveness to a DIYer though.. $270ish for...

MRFE6VP61K25HR5 Freescale Semiconductor RF MOSFET Small Signal Still very new.. 0 on hand, 50 on order. Lead time 15 weeks.

Not sure on that.. possibly on the output, but possibly not. I'd have to see some sort of engineering bulletin on them or something similar to get an idea. I just ordered the Ferromagnetic-Core Design and Application Handbook by Doug DeMaw.. Once I'm done reading it I'll hopefully be able to...

While it certainly did not come from the manufacturer, I have heard that they run around $250 each..

That looks about right to me.. Those numbers work when I plug them in here: http://www.sengpielaudio.com/calculator-amplification.htm

Not necessarily - but it does depend on how many decimal places you want to take into account when determining accuracy. A correctly driven class A amplifier should give a faithful representation of the input waveform.

You are correct. Refer to my response in post 21.

True. I'm referring to voltage. I'm used to viewing modulation on a scope like the MacLeod-esque immortal being that I am. Also, just for everyone's info, oscilloscopes can be had on ebay for less than many good wattmeters.. and you can do more with them, including calculating wattage...

The vast majority of the internal components, if not all of them, are rated to at least 150C.. which is around 300F. I doubt you'll be seeing 300F in your car under any circumstance. Of course when the radio is in operation, particularly when transmitting, it is better to be cooler, but you...

Actually, RatsoW8 is right. You can only have 100% modulation of a carrier, which means that the carrier's amplitude is doubled at modulation peaks and reduced to exactly zero amplitude at the absolute lowest point.. Anything more results in clipping, and thus distortion. Any time you increase...

You know, there's some real nice folks here, as is often evidenced by their willingness to do simple, menial things that a person could do for themselves with about 6 mouse clicks. Props to you guys.. you're WAY nicer than I am.