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Author Topic: QRM from Video card  (Read 1217 times)
ZL1BBW
Member

Posts: 412




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« on: April 06, 2013, 01:04:55 AM »

Just got my first dedicated radio pc, the video card produces a heap of hash on many of the HF bands.  Have reduced it a bit by winding many turns round some ferrite rods, but there is still a continual set of noises at about 18khz intervals, frankly its driving me nuts.

As I change the resolution its gets worse as it goes higher, so down to lower res 800 x 600 and 16 colours, and its passable just, but still thee on most bands.

Any ideas please.

No pencil and paper does not count.   Thanks
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
K1CJS
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Posts: 6061




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« Reply #1 on: April 06, 2013, 04:18:03 AM »

Not much to be done except replace the video card.  Maybe you have a bad one....
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W8JX
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Posts: 6645




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« Reply #2 on: April 06, 2013, 11:48:27 AM »

Not much to be done except replace the video card.  Maybe you have a bad one....

What are you using for a monitor as it may be real culprit.
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You can embrace new computer/tablet technology and change with it or cling to old fall far behind....
ZL1BBW
Member

Posts: 412




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« Reply #3 on: April 06, 2013, 12:13:49 PM »

Will try another display over that side of the room.  One side is the office and the other side is radio.  It was a freebie PC and ACER LED display, so its a no cost setup.  Am going to try and find my power line filter today and put that into the monitor lead.

Sort of retribution isn't it reverse TVI.
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ex MN Radio Officer, Portishead Radio GKA, BT Radio Amateur Morse Tester.  Licensed as G3YCP ZL1DAB, now taken over my father (sk) call as ZL1BBW.
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