Hello-When I start up satpc32 on my Dell computer I get this annoying qrn hiss on 2M. Any simple fixes short of moving the computer further away? It is from the computer not the monitor.
73 Bob W7LRD
Very broad question
Try some things
----- Original Message ----- From: "Bob- W7LRD" w7lrd@comcast.net To: amsat-bb@amsat.org Sent: Sunday, October 11, 2009 8:59 AM Subject: [amsat-bb] satpc32 qrn
Hello-When I start up satpc32 on my Dell computer I get this annoying qrn hiss on 2M. Any simple fixes short of moving the computer further away? It is from the computer not the monitor.
73 Bob W7LRD
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.421 / Virus Database: 270.14.9/2427 - Release Date: 10/10/09 06:39:00
hi
I remember not too long ago fellow hams were polite and helpful
don't be discouraged
Bob, I don't use satpc32, but it might help if you specify if the problem occurs strictly when you start satpc or you get the noise when the computer is on (regardless of running satpc)
if the problem should occur when you turn on the pc, it is not uncommon for pc's to throw out a lot of noise
disconnect any cables going from the rig to the pc does the noise still occur?
if it does you have to experiment a bit to see if you can eliminate the noise, you might have to try to buy a ac filter for the pc array solutions makes one.
you may also have to try putting ferrits (http://www.dxengineering.com/Products.asp?ID=182&SecID=152&DeptID=42 ) on the cabling for your rig
you might want to google around and search the ARRL web site on trying to mitigate pc noise, ultimately you may have to move the pc
feel free to email me directly off the list i am not expert but will try to help you
On Oct 10, 2009, at 7:05 PM, Andrew Rich wrote:
Very broad question
Try some things
----- Original Message ----- From: "Bob- W7LRD" w7lrd@comcast.net To: amsat-bb@amsat.org Sent: Sunday, October 11, 2009 8:59 AM Subject: [amsat-bb] satpc32 qrn
Hello-When I start up satpc32 on my Dell computer I get this annoying qrn hiss on 2M. Any simple fixes short of moving the computer further away? It is from the computer not the monitor.
73 Bob W7LRD
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.421 / Virus Database: 270.14.9/2427 - Release Date: 10/10/09 06:39:00
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Going to Dayton '10 It will get better with more support!
Myles Landstein N2EHG myles.landstein@gmail.com
If the same Dell with all the old cables ( CAT, USB, etc ) worked without a hiss then you need to check what changed. Start with grounding. One of the cables may have lost the grounded shield. You may have rearranged your desk and the cables run closer together. Maybe you always had this but usually ran SATPC32 with the volume low. The key is "What changed since the last time it worked okay for you?" Did you change the video resolution - if so put it back temporarily. Did you change external speakers? Is it the same with both internal and external speakers. If the external ones are noisy then your amp and speakers are picking up RF.
Is the hiss on the Dell speakers or on the radio speakers? What changed there? Cables, connectors, position. If on the radio, check that CAT cable between the Dell and the Radio.
Try it without the CAT cable plugged in, the cable to your rotator controller - you are removing antennas that my be picking up RF from your video.
Load other programs, your browser, email client and whatever else you have on there to see if the noise can be duplicated like SATPC32 then you know for sure some RF from your video card if getting into the sound system.
It is a matter of removing or changing one item at a time. Don't do 2 or 3 changes at the same time because you won't know which did the fix.
Think like Sherlock Holmes and eliminate potential causes.
Good luck.
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Bob- W7LRD Sent: October 10, 2009 5:59 PM To: amsat-bb@amsat.org Subject: [amsat-bb] satpc32 qrn
Hello-When I start up satpc32 on my Dell computer I get this annoying qrn hiss on 2M. Any simple fixes short of moving the computer further away? It is from the computer not the monitor.
73 Bob W7LRD
_______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Hi, are you using serial RS-232 or USB to communicate between your computerand radio ?
Do this test, start everyhthing as usual and remove only the communication cable between the rig and the radio. Does the qrn go away ?
2009/10/10 Bob- W7LRD w7lrd@comcast.net
Hello-When I start up satpc32 on my Dell computer I get this annoying qrn hiss on 2M. Any simple fixes short of moving the computer further away? It is from the computer not the monitor.
73 Bob W7LRD
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
participants (5)
-
Alan VE4YZ -
Andrew Rich -
Bob- W7LRD -
Jean-François Ménard -
myles landstein