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SR-40ers,

PA contest this morning provided lots of signals to check out. Also a RTTY thing early this morning.

Had several things running like email and such and some strong signals sounded rather choppy. I minimized the PowerSDR window to do something in email and the signal cleared up -- no longer choppy.

OK if you just wanted to listen to the one signal but not too useful for tuning around...[g]

Better to close all the other applications and open windows of course but interesting anyway -- maybe.


Chuck Carpenter, W5USJ, Point, TX -|- Rains Co. -|- EM22cv -|- 72 es 73
50 years -|- 19 - K2OFN and 31 - W5USJ -|- Most fun = QRP since 1984.
www.w5usj.com hosted by Hamnutz.com -|- NeTxQRP www.netxqrp.com

If the sigs got better with the window minimized it's hinting the computer can't keep up with updating the spectrum display. You can try turning it off,. or turning down the refresh rate -- there's a setting somewhere in the setup pages that lets you set the refresh rate for the display.

BTW - the cpu intensiveness of the spectrum update is a known issue. There's potential for making it much less CPU intensive by using DirectX video interfaces. Now we just need to find someone skilled in such things to write the code.

Regards,

Bill (kd5tfd)

If your PC is marginally slow you will get the breakup of the audio when you do other things.

Try this, it should help;

Bring up the Setup Screen
Click on the Display Tab
There is a item labeled "Main Display FPS:", it has small up and down arrows next to it, and the default is 15
Click on the down arrow, and bring it down to about 8
Click on "Apply"
Click on "OK"
close the window.

Most of the CPU is busy displaying the Panadapter window, we just told it to display 8 times a second instead of 15 times a second. You should see your CPU usage displayed in the lower left hand corner go down.

Another thing you can try is to turn of the S meter;

Above the S Meter there is a box labeled "RxMeter" next to it is a down arrow, click on the arrow, click on off.

This will also reduce the amount of CPU usage.

One more thing, we can tell the software to treat itself as more important than other programs so it's not interrupted.

Bring up the "Setup Screen"
Click on the "General" tab, but it should be there anyway.
A little lower than the middle and on the right side of the screen there is a box labeled "Process Priority"
Click on the down arrow in the box, a list should show up, click on "High"

This tells windows that the audio processing is more important than anything else and should not be made to wait.

Hope this helps.




At 08:33 AM 10/9/2005, Chuck Carpenter wrote:

SR-40ers,

PA contest this morning provided lots of signals to check out. Also a RTTY
thing early this morning.

Had several things running like email and such and some strong signals
sounded rather choppy. I minimized the PowerSDR window to do something in
email and the signal cleared up -- no longer choppy.

OK if you just wanted to listen to the one signal but not too useful for
tuning around...[g]

Better to close all the other applications and open windows of course but
interesting anyway -- maybe.


Chuck Carpenter, W5USJ, Point, TX -|- Rains Co. -|- EM22cv -|- 72 es 73
50 years -|- 19 - K2OFN and 31 - W5USJ -|- Most fun = QRP since 1984.
www.w5usj.com hosted by Hamnutz.com -|- NeTxQRP www.netxqrp.com





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Cecil Bayona
KD5NWA
www.qrpradio.com

I fail to see why doing the same thing over and over and getting the same results every time is insanity: I've almost proved it isn't; only a few more tests now and I'm sure results will differ this time ...