MPX and frequency correction

All posts related to PCI MAX transmittors go here!

Moderators: Sir Nigel, Nina, pcs, 5r, phpBB2 - Administrators

Post Reply
maxmaxxed
New registered user
New registered user
Posts: 7
Joined: Mon Apr 29, 2013 5:56 pm

MPX and frequency correction

Post by maxmaxxed »

I'd like to feed an externally generated mpx signal into my PCI MAX 3000. Can someone please recommend the best point? Ideally I'd like the option of keeping the internal RDS encoder.

I notice my unit is about 3 Khz low in frequency. What is the recommended approach to allowing the frequency to be trimmed?

Thanks,

Max.
User avatar
pcs
Site master
Site master
Posts: 3132
Joined: Fri Jan 18, 2002 1:00 am
Location: Radio Land
Contact:

Post by pcs »

If you have PCIMAX3000 in front of you, look at the 9 pins for RDS daughter board.

The bottom 3 pins:

1. bottom pin, is MPXin
2. GND
3. 19KHz


You don't have to worry about 3 kHz, this is like parking a tanker and worrying about millimetres. The difference does not affect range nor is it audible or measurable at the receiver.
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
maxmaxxed
New registered user
New registered user
Posts: 7
Joined: Mon Apr 29, 2013 5:56 pm

Post by maxmaxxed »

Thanks Marko.
Post Reply