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MAX PRO IV + Background noise on modulation.

 
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MAX PRO IV + Background noise on modulation.
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Carlos
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Joined: 28 Jun 2006
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Post MAX PRO IV + Background noise on modulation. Reply with quote
I have this transmitter working in mono mode and I have realized that, when the music is playing, I can hear a noise that seems to increase especially with low frecuencies and disappears when the music stops. It appears to be as the PLL makes a phase correction.
Tue Feb 20, 2007 11:34 pm View user's profile Send private message
Carlos
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Joined: 28 Jun 2006
Posts: 19

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After spending some hours trying to find where the fault is, it seems to have a wrong value with the C12 capacitor. It was assembled a 5nF capacitor (red body) instead of a 470nF capacitor.

I bought this board assembled, I hope it helps to the PCS team and everybody.....

Regards.
Sat Feb 24, 2007 7:12 am View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

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I checked our other boards and they all have correct value.

It seems it was only your board with this problem.

I definitely apologize and congratulate you on fixing it so fast.

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Marko - PCS Electronics
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Sat Feb 24, 2007 5:38 pm View user's profile Send private message Visit poster's website
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