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PS overhaul in 2.00 #1

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@dl1bz

As the developer and maintainer of deskHPSDR I upgrade my app now to WDSP-2.00.
I know, the focus of that release was renewal PureSignal.

But after some tests I'm not sure, if this was really a step forward or not.
In my eyes now the PS controlling is more aggressive against the 1.29.

PS Relax tolerance and PS MAP were removed now.
In 1.29 my 100W PA was working stable up to 90W, in 2.00 PS stability (aka correction) stops at 70W yet.

After some code investigations I decide to replace #define DEADLOCK_MIN_FRAC 0.06 with a new function SetPSDeadlockMinFrac(channel, value); in calc.c for make this value adjustable.

In my app I add 3 new options:

Strict   = 0.06 (WDSP-2.00 default)
Medium   = 0.04
Relaxed  = 0.02

This function does not replace PS Relax tolerance, but has a similar effect. With MEDIUM I'm again near the behavior like in 1.29,
STRICT is simply too aggressive.

73 Heiko, DL1BZ
Maintainer deskHPSDR project

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