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Reduce rf output when connecting stereo encoder

 
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Reduce rf output when connecting stereo encoder
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1skin
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Joined: 13 Sep 2012
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Post Reduce rf output when connecting stereo encoder Reply with quote
When connecting my MaxPro 2000+ to my SE2000 stereo encoder the power of the output signal Is reduced dramatically!
Pre-emphasis is set to none on the tx and 50 on the encoder
It's connected via the max link cable
The tx is powered by 12v 4a psu
Have also tried powering the encoder and the tx individually
When not using the encoder the power output is fine
Any help welcome!
Sun Oct 14, 2012 2:20 pm View user's profile Send private message
pcs
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Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
There can be two possible causes:

1. Your power supply may be very close to the point of overload and the added consumption of stereo encoder brings it down to its knees. It is also possible that your mains power supply is not RF blocked, meaning RF affects its operation and reduces the output voltage. Rearanging wires in such a system can already affect output power. Try with another power supply.

2. The audio sensitivity trimmer is set way too high. Set it to zero just for a test. Question: do you get normal audio out of your setup?


It would help if you send us a photo of your setup to examine.

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Marko - PCS Electronics
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Turn your PC into a FM radio station!
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Mon Oct 15, 2012 1:27 am View user's profile Send private message Visit poster's website
1skin
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Post Reply with quote
Excuse my dumbness. But I've just realised my psu is AC not DC
Mon Oct 15, 2012 4:44 pm View user's profile Send private message
pcs
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Post Reply with quote


That's a good one.

You probably heard a very loud buzz on your radio.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Oct 15, 2012 4:54 pm View user's profile Send private message Visit poster's website
1skin
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Joined: 13 Sep 2012
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Post Reply with quote
Yep! It was the power! Fed it with 15v DC and it sounds beautiful!
Tue Oct 23, 2012 11:44 am View user's profile Send private message
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