Zoom on ISA max modulation
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Zoom on ISA max modulation
Hi,
I have been using the ISA max for half a year now, working fine. A week ago a zoom sound came in the modulation. It is not a common 50Hz zoom, more like a fan sound. I've tried to cover the card from any air streams in my PC, without succes. The zoom appears after aprox 10 minutes, the first 10 minutes the sound is perfect. Does anybody have an idea what it could be?
Bazz
The Netherlands
I have been using the ISA max for half a year now, working fine. A week ago a zoom sound came in the modulation. It is not a common 50Hz zoom, more like a fan sound. I've tried to cover the card from any air streams in my PC, without succes. The zoom appears after aprox 10 minutes, the first 10 minutes the sound is perfect. Does anybody have an idea what it could be?
Bazz
The Netherlands
Some more info:
Using no external power supply, zoom appears to decrease when power is set to a low value. At 100% the zoom becomes louder.
That's the ancient ISA MAX card for ISA bus?
Try to move your antenna around a bit and see if that has any
effect.
Does it happen at any frequency?
Try to move your antenna around a bit and see if that has any
effect.
Does it happen at any frequency?
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
I call it ancient since its been many years since we stopped
selling these.
Are you using external power supply?
selling these.
Are you using external power supply?
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
It doesn't operate with
It doesn't operate with an external power supply. Do you think the computer's power supply can cause interference after a while? I have tried another grafics card to see if this stops the interference. The experiment still continues...so far so good.
About the ISA slot, it is an old pc, AMD K6 200 MHz Win98 and with 3 ISA slots.
About the ISA slot, it is an old pc, AMD K6 200 MHz Win98 and with 3 ISA slots.
As far as I remember the external power supply had to be more than 12.5V or so. Use 13.8V to be sure.
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128