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Stereo encoder selection guide  


UNDER CONSTRUCTION
One of the first steps when building your own FM transmitter from modules will be the choice of exciter module. Below are a few typical scenarios that will help you decide. If you are still in doubt, check the comparison chart further below. You can also drop us a message/e-mail or contact us via Skype for additional info.

Small community stations in remote areas, far from urban centers
STMAX3015+ works best for these since it comes with built-in stereo encoder and RDS. This reduces both cost and complexity. It can also be easily programmed via LCD without the need for PC to set the RDS parameters. You can mount one of these on the top of these amplifier modules, this will form a complete Stereo RDS FM transmitter. Audio quality is very good, but spurious level is not suitable for professional setups as DDS digital modulator creates some in-band artefacts about -50dBc down. If you're looking for a low cost solution and just want to play with radio a little bit, get one of these. Set the power limit jumper into 1W position, choose a free unused frequency and it is very unlikely that you will ever get in trouble.

Small community stations that require spurious levels to be >65dBc
If your signal needs to be clean but 15W is all you need, MAXPRO2015+ works best. You will also need a separate stereo encoder or audio processor with MPX output. The added benefit is that you can now also use MPX STL wireless link. MAXPRO2015+ can be used as a pallet amplifier driver (it has PWR/SWR inputs), but it is a bit less convenient than its larger brother the MAXPRO6015+ which comes with DIGIAMP interface.

Large stations that require spurious levels to be >65dBc or more
MAXPRO6000+ series and MAXPRO7015+ when it becomes available work best. You will also need a separate stereo encoder or audio processor with MPX output. The added benefit is that you can now also use MPX STL wireless link. Both come with DIGIAMP interface, the 7015+ is almost identical but is even cleaner than the 6015+. This exciter can drive any amplifier up to 10KW and more. Both 6015+ and 7015+ support the new SE6000+ DSP stereo encoders and the new large 4x16 LCD display with rotary encoder.


Here is a quick comparison chart between different types of our FM exciters:

Name
SE2000+ SE5000 DSP+ SE5000 PRO DSP+ SE6000/7000 DSP+
Available today Yes Yes No Yes
RDS plugin board
Yes, RM 4000+ mini Yes, RM 4000+ mini Yes, RM 4000+ mini Yes, RDSIO5000/7000+
Stereo separation
Average
Average+
Excellent/Top 96x Excellent/Top 96x
Supply voltage 12-15V 12-15V 12-15V 12-15V
DIGIAMP
6-pin standard
6-pin standard
6-pin and 10-pin 6-pin and 10-pin
On-board audio inputs
RCA, headers for XLR RCA, headers for XLR Requires input board with RCA/XLR and USB audio RCA and USB (XLR with IORDS BOARD)
USB audio
Yes No Yes on input board
Yes
Built-in IO board
No
No No
Yes USB and RS232 (can be extended to Ethernet)
Separation
30-35dB
30-40dB
>60dB >60dB
Built-in DSP No Yes Yes Yes
Built-in limiter
Yes Yes Yes Yes
Built-in preemphasis Yes, jumpers Yes, jumpers Yes, jumpers Yes, LCD
Built-in notch 19KHz filter Yes Yes Yes Yes
Can be used with LCD display
No Yes Yes
Yes
Control with FM exciter's LCD Yes Yes Yes Yes
Suitable for:
Low cost solution with a clean signal, supports RDS plugin Low cost solution with a clean signal, supports RDS plugin, with good audio quality and all functions adjustable from LCD display
Excellent solution with a clean signal, supports RDS plugin, with good audio quality and all functions adjustable from LCD display Excellent solution with a clean signal, supports RDS plugin, with good audio quality and all functions adjustable from LCD display, on-board IO board extendable to Ethernet.




DIGIAMP support:
When building a larger transmitter which consists from exciter module, amplifier module and output filter, this interface simply plugs into our filter to provide a host of signals to the exciter. Exciter can display those on the LCD. These include power, swr, temperature, amplifier voltage and others.


If you have questions you can call us on Skype: pcs_electronics , you can also just click the Skype link on the right.
It is easy to get in touch with us, you can also click Live Support in the header of the page or you can e-mail us directly to email shown below:
Email shown as jpg to prevent spam

 

This product was added to our catalog on Thursday 20 April, 2017.
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