[Amps] FCC Denies Expert Linears' Request for Waiver of 15 dB Rule

[Joe]

On 12/28/2016 8:40 AM, Manfred Mornhinweg wrote:
> Hi Jim, and all,
> Exactly!
>
> At this moment I'm VERY tempted to brew a concoction from these 
> ingredients:
>
> To these hardware ingredients I would add some freely available 
> software, such as Pavel Denim's software for the Red Pitaya, plus 
> PowerSDR, using closed-loop, RF-feedback amplitude and phase 
> predistortion to linearize the amplifier. The software has this 
> already implemented.

I wonder is what you are describing here is similar to what I saw on a 
commercial FM ya know 88 to 108 FM Broadcast stations new transmitter.

The stations tech would change something on the transmitter, and the 
display after the chance ha a spectrum analyzer view-able, and right 
after the change you would see the typical wide looking broadcast signal.

But then it would all on it's own tune itself so the output was like in 
a solid brick wall, the side skitrts would adjust to the point that they 
were darn near vertical!  !00% full frequency full power then, BOOM 
nothing! No sidebands of any kind at all. Incredible.

Joe WB9SBD


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