Hi Michael,
Thanks for the note!
Flatten does not prevent the temporal variation in noise floor levels.
It alters (straightens) the noise level across the frequency spectrum at
a particular point in time.
73,
Roger W3SZ
On 11/9/2016 3:59 PM, Black Michael wrote:
> The "Flatten" doesn't work?
>
> de Mike W9MDB
>
>
> ------------------------------------------------------------------------
> *From:* Roger Rehr W3SZ <[email protected]>
> *To:* WSJT software development <[email protected]>
> *Sent:* Wednesday, November 9, 2016 2:44 PM
> *Subject:* [wsjt-devel] Waterfall Zero and Gain controls
>
> I am hoping that this is the right place to make this comment/request
> regarding what is essentially the ergonomics of the WSJT-X GUI.
>
> I've been using the devel versions of WSJT-X for several hours a day for
> the past several weeks for 144 MHz EME reception in a location with
> significant and constantly varying noise levels that cause the noise
> floor to undulate continually.
>
> I find the waterfall zero control to be very awkward to use for
> frequent, very small adjustments of this parameter. I understand that
> it is possible to use the arrows on the keyboard to adjust this
> parameter after selecting the waterfall zero level control with the
> mouse or trackball, but that too is awkward to do on a frequent basis.
> I would much prefer either arrow up/down boxes, ideally with a
> user-adjustable increment size, or a text box where I could type in the
> zero level that I want. To help you understand what I want, I will
> refer to Linrad, which uses each of these types of controls for some
> functions. For example, the up/down arrow boxes are used in Linrad to
> set both the gain and the zero level of the main spectrum, and the text
> boxes are used to set the gain and zero level of the main waterfall.
>
> This is more than just a whimsical preference. If that were all that it
> is, I would not bother the development team. What prompted me to post
> this rather than just grinning and bearing the current user interface is
> the fact that the 4th and 5th digits on my right hand have become
> painful when performing this activity, as a result of the need to tense
> the muscles and make tiny movements to make tiny changes in the zero
> level value without "going too far" in one direction or the other
> repetitively day after day for the past few weeks. Either arrows or
> text boxes would eliminate the production of this kind of
> musculoskeletal stress by the WSJT-X GUI.
>
> I have no problem with the spectrum gain and zero controls, for they do
> not require such fine motions to set appropriately.
>
> As an aside, in all of the pieces of software that I have used over the
> years, I have found the "auto zero", "auto gain", and "waterfall AGC"
> functions to NOT set the zero level or gain of the waterfall to my
> satisfaction. So I would NOT suggest adding such a function as a
> possible solution to this problem.
>
> Thanks in advance, and thanks for all of the great work that you do!
>
> 73,
>
> Roger Rehr W3SZ
>
>
>
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