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STMAX3015+/3025+/3050+ exciter (stereo+RDS)
[15W, 25W, 50W]
 


DDS digital signal synthesis, excellent audio, on-board stereo and RDS

The new STMAX 3015+ FM exciters combine more features into a small board than ever before. With DDS digital modulator, on-board stereo and RDS and all of this full controllable via LCD display with new 2-level MENU system and availability in 15W, 25W and 50W formats all powered from 12-15V this unit represents realization of dreams for most prospective radio station builders.

The design of the STMAX 3015+ series is based on MAXPRO 6015+ and also looks quite similar at first glance, however it comes with on-board DDS modulator and DSP stereo encoder with RDS. The result is a rugged and solid FM exciter with completely flat power output across the entire FM band at 15W, 25W or 50V, designed to run silently and cool 24/7. Since the new design featuring larger heatsink with copper spreader was so much better and completely stable we were able to add 50W model. Your dream FM exciter is a reality right now!

The exciter carries a one year limited warranty on parts and labor against defects in materials and workmanship, except the RF final transistor.

You can find the manual for this (and other products) here.

How is STMAX3000 series different from the MAXPRO6000 series?
- On-board stereo and RDS encoders.
- New larger heatsink
- Copper heat spreader for the 50W model
- DDS digital modulator. This ensures very good audio, but creates spurious artefacts about -50dBc
- All parameters adjustable from the LCD, including RDS RT, PS, PI and others
- 2- level menu system groups similar parameters together making adjustment easier
- Comes also with new LCD with rotary encoder. This new LCD offers password protection and other cool features.
- Can't be used with MPX STL links as there is no MPX in

Technical specifications:
- RF Output Power: 0 to 15 Watts, 0-25W, 0-50W (fully variable via LCD in nice gradual steps), LCD power adjustment range can also be limited to 0-1W, 0-2W, 0-3W, 0-4W ... 0-15W, 0-full, this is done with a jumper (exact options vary depending on model).
- Output connector: BNC female
- Output Impedance: 50 Ohms
- Frequency range: 87.5-108MHz
- PLL Steps: 100KHz-500KHz, adjustable
- Frequency stability: +/- 20Hz
- Spurious/Harmonic rejection: Harmonics: >50dB, Spurious: >-50dBc
- Power Supply 15W: 12-15V/2.5A
- Power Supply 25W model: 12-15V/4.5A
- Power Supply 50W model: 12-15V/6A
- Power connector 15W, 25W and 50W model: New design with plugin with 2 screw terminals or standard barrel with 2.1mm positive center pin
- Quartz Locked PLL Frequency Control, DDS digital modulator
- No Expensive Test Equipment Required
- Audio performance: Less than 0.1% distortion, 20Hz-15KHz
- RF output ruggedness: SWR protection, temp protection
- Polarity protection, temp protection
- Pre-emphasis, 50uS, 75uS or none selectable via LCD
- Stereo pilot level adjustable via LCD
- RDS pilot level adjustable via LCD
- MPX level adjustable via LCD
- Audio Input Impedance: 1Kohm, unbalanced
- Audio Input Level: -10dBu, +4dBu (selectable from LCD)
- Stereo separation: >50dB
- S/N ratio: >90 dB
- PC Board Size 15W, 25W and 50W model: 100x125mm
- Audio connectors: 2x RCA jack, 14-pin connector for external input board with balanced XLR inputs
- RF monitor: solder pads

What is the Predrilled LCD front panel?
- This is a rectangular piece of aluminum with predrilled holes for LCD display, 3 buttons and LED diodes. It also has 4 holes in the corner so you can easily mount this to your case. This makes it much easier to mount the transmitter into a nice looking case (eliminates the hard work with the LCD). This is of course an optional item.

What is the RS232/USB IO board and why do I need it?
IO board is required, if you want to control STMAX3000+ remotely via PC. It plugs into the LCD control module.

What is the Ethernet remote control module for?
This add-on card lets you connect this transmitter to the PC via Ethernet network. You can control and monitor the status of your transmitter over Ethernet or Internet. This is of course an optional item.

What is the Audio Input Board for?
This add-on card adds two XLR balanced inputs and two RCA connectors plus USB audio input. It also comes with extra low pass filter, limiter and selectionable optional external input (mp3 player or something else). The inputs are ESD protect and have RF filter. This is of course an optional item but it is highly recommended and it does make life easier as you can install exciter far from the input connectors.

What is the Software+IOBOARD for changing logo?
This is a combination of special unlocked version of software and RS232 IO board, which is required to control STMAX3015+ remotely via PC/RS232. It plugs into the LCD control module. Software lets you change welcome text (logo); you can replace that text with your company name for example. Your customized text will be saved and used at every power-up. This is of course an optional item.

What is PCSLPF6000+ 1KW PTFE LPF with DIGIAMP?
This is a low pass filter with directional coupler (power and SWR meter) that simply connects to STMAX3015+ via flat cable. Only used when you install this exciter in an enclosure together with amplifier. It can than be connected between the exit from amplifier and antenna connector to provide power, swr, temperature and voltage information to the FM exciter. Flat cable is ordered separately (DIGIAMP flat cable). You can read more about this in the manual.

What is the Empty enclosure for STMAX3015 for?
This is a very practical enclosure with all holes predrilled. You can install the STMAX3015 inside. It even has a heatsink so it will accept even the 35W or 50W version. A fan is not included, use any 80x80mm 12V fan. Holes for the LCD are predrilled as well. No text or brand name is printed anywhere on this box.

What else should I buy to construct a big 500W or 1000W or higher transmitter?
We really recommend these items to all users:
- LPF 6000 or 7000 series filter (described above), more info on these available here. 6000 and 7000 series filters are easier to connect (use digiamp flat cable).
- Any of these pallets here, a power supply for these can be purchased here
- A rack enclosure from 1H to 3H, with fans, accessories and more...
- Use teflon RG142 50 ohm coax for internal connections inside your rack (teflon coax is easier to work with, it does not melt when hot). Make sure all coaxial cable leads are very short.

To look for a suitable antenna check: here.
To look for a suitable coaxial cable check: here.
To look for a suitable case check: here.


Este producto se añadió a nuestro catálogo el Sunday 13 March, 2016.
 *Por favor, seleccione la cantidad de cada artículo que desea encargar y pulse el botón 'Añadir al carrito' a continuación.
Mostrando de 1 hasta 15 (de 15 productos) Páginas de resultados:  1 
    Nombre+   Modelo   Efectuar la selección   Precio 
15W replacement final transistor for STMAX3015+  15W replacement final transistor for STMAX3015+     19.99EUR
Audio input board (RCA+XLR+USB) + 20cm flat cable  Audio input board (RCA+XLR+USB) + 20cm flat cable     49.99EUR
Empty enclosure for STMAX3015, no fan  Empty enclosure for STMAX3015, no fan     59.99EUR
PCSLPF6000+ 1KW PTFE LPF with DIGIAMP  PCSLPF6000+ 1KW PTFE LPF with DIGIAMP     89.99EUR
PCSLPF7000+ 1.5KW PTFE LPF with DIGIAMP  PCSLPF7000+ 1.5KW PTFE LPF with DIGIAMP     119.99EUR
Pre-drilled LCD panel (3 keys)  Pre-drilled LCD panel (3 keys)     4.99EUR
Pre-drilled LCD panel (rotary button 2x16)  Pre-drilled LCD panel (rotary button 2x16)     5.49EUR
Pre-drilled LCD panel (rotary button 4x16)  Pre-drilled LCD panel (rotary button 4x16)     5.99EUR
Remote control IO board (USB+RS232+3xBNC) + 20cm 6-pin flat cabl  Remote control IO board (USB+RS232+3xBNC) + 20cm 6-pin flat cabl     39.99EUR
STMAX3015+ 15W with LCD  display (Stereo + RDS)  STMAX3015+ 15W with LCD display (Stereo + RDS)   15W, 12V  159.99EUR
STMAX3025+ 25W with LCD display (Stereo + RDS)  STMAX3025+ 25W with LCD display (Stereo + RDS)   25W, 12V  169.99EUR
STMAX3050+ 50W with LCD display (Stereo + RDS)  STMAX3050+ 50W with LCD display (Stereo + RDS)   50W, 12V, two finals  209.99EUR
Universal 14-pin DIGIAMP flat cable (40cm) with connectors  Universal 14-pin DIGIAMP flat cable (40cm) with connectors     5.99EUR
Upgrade to new 2x16 LCD with rotary button  Upgrade to new 2x16 LCD with rotary button     10.00EUR
Upgrade to new 4x16 LCD with rotary button  Upgrade to new 4x16 LCD with rotary button     19.99EUR
Mostrando de 1 hasta 15 (de 15 productos) Páginas de resultados:  1 
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