[Lowfer] Odde Spectran Behaviour...

[Clint Turner]

I was messing with Spectran (W98, non-SE) and noticed something odd.

Using the following settings:

- 48 KHz sampling
- 23 Hz resolution
- Horizontal scroll

 From 3668 Hz to 3680 Hz, the peak amplitude display will change from, 
say, -20 to -100.  If the resolution is changed to 5.9 Hz, this change 
will occur at about 2795 Hz (+- a few Hz...) and at 2.9 Hz this 
transition occurs at about 2360 Hz or so.

I finally noticed what seemed to be happening:  If the current frequency 
is off the scrolling display (which has a narrower bandwidth than the 
"spectrum analyzer" display on the top part) then the peak frequency 
displays correctly - but not the amplitude - although it still displays 
correctly on the analyzer... (It can happen at any sampling rate or 
bandwidth, BTW...) 

Is it just a W98 thing, or does that happen with even other OS's?

Clint
KA7OEI
"CT"