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Empty 1H 19-inch rack (3 buttons stereo)
Empty 1H 19-inch rack (3 buttons stereo)
59.99EUR
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FM exciter selection and comparison guide  



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
MAXPRO2015+ STMAX3015+ series MAXPRO6015+ series MAXPRO7015+ series
Available today Yes Yes Yes Yes
Frequency range
87,5-108 MHz (54-68 and 76-90MHz on request) 87,5-108 MHz (76-90MHz on request) 87,5-108 MHz (54-68 and 76-90MHz on request) 87,5-108 MHz (54-68 and 76-90MHz on request)
Output power
15W
15W/25W/35W/50W
15W/25W/50W 15W
Supply voltage 12-15V 12-15V 12-15V/48V 12-15V
PLL step size
100 kHz (down to 50KHz on request)
100 kHz (down to 1KHz on request)
100 kHz (down to 50KHz on request) 100 kHz (down to 50KHz on request)
Antenna connector
BNC BNC BNC BNC
Modulation type
Standard MPX input L/R input Standard MPX input
Standard MPX input
VCO type
Standard VCO + PLL
DDS digital Standard VCO + PLL
Standard VCO + PLL
Spurious output
<65dBc
<50dBc
<65dBc <75dBc
Built-in stereo encoder No, requires SE2000 or SE5000 (SE6000/SE7000 not supported) Yes No, requires SE2000, SE5000, SE6000 or SE7000 No, requires SE2000, SE5000, SE6000 or SE7000
Built-in RDS
No, requires external Yes No, requires external No, requires external
What kind of STL link can be used MPX or regular split audio channels Split audio channels only MPX or regular split audio channels MPX or regular split audio channels
Digiamp support
No, but it has input for external power and swr Yes Yes
Yes
RDS control Via PC aplication, requires RDS encoder Directly from LCD display Via PC aplication, requires RDS encoder Via PC aplication, requires RDS encoder
PC remote control
CyberMaxFM+ program
CyberWaveFM+ program CyberMaxFM+ program CyberMaxFM+ program
Support for new large 4x16 LCD
No Yes Yes
Yes
Suitable for:
Low cost solution with a clean signal Low cost Stereo + RDS solution with very good audio quality and all functions adjustable from LCD display
Clean signal for pro solutions, requires Stereo/RDS encoder Very clean signal for pro solutions, requires Stereo/RDS encoder


PLL step size:
No legal radio stations exist outside 200KHz steps so 100KHz is more than enough for a PLL step size. Many car receivers have 200KHz step size.

RDS:
Radio data system, displays radio station name on the display of receiver

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 Sunday 13 March, 2016.
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