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DIGITAL 40W FM BOOSTER+ with SWR meter  


Digital MOSFET 40W FM RF amplifier, with SWR meter

This wideband no-tune FM broadcast band amplifier unit was developed to supplement the PCI MAX line of fm transmitters, but will work great with most LPFM (low power fm transmitter) on the market. It takes the signal and amplifies it to the full power of 35-40W. It can also be used to extend the range of small transmitters, up to about 1W of output power (amplifier's sensitivity can be adjusted with jumpers). No tuning is required as the amplifier is a fully wideband design, it even works down to 76MHz. It also features a built-in SWR foldback protection with 10-LED bargraph display. Unit works from a stabilised DC mains power supply (12-15V at 6-7A) or car battery.

Look HERE for all manuals, drivers and support.

Here and here are two small movies to show how it all works. Its best to save it to hard disk and than play with VLC or Windows media player. Our Cyber Max Micro test unit was used to drive the 15W booster+. A dummy load was attached and Daiwa CN-101L SWR/POWER meter . 15V power supply was used to power the booster.


What's great about this unit
- Power is now adjustable digitally with UP/DOWN keys, adjusted power is shown with 10-LED bargraph display
- SWR meter included, current value is shown with 10-LED bargraph display
- Truly wideband, no tuning necessary
- SWR and TEMP protection circuit
- Requires only about 300mW to produce full 40W of power
- It CAN be used with PCI MAX cards or other small FM transmitters (up to 1W max.)


Technical specifications:
- RF Input Power: 100-1000mW (level selectable via 2 jumpers)
- RF Output Power: 30-40W typ (40W max)
- RF Output Power: Adjustable from 0 to max via up/down keys.
- Output connector: BNC
- Output Impedance: 50 Ohms
- Input connector: F (designed to match easily with the PCI MAX transmitters)
- Input Impedance: 50 Ohms
- Frequency Range: 76-108MHz, below 87.500MHz requires extra filtering
- Spurious/Harmonic rejection: Harmonics: > 50dB min.
- Built in SWR fold-back protection (with a 10-LED bargraph display)
- Power Supply Required: 12-15V/6-7A, 13.8V is perfect
- PCB board: 145x110mm, double-sided professional PCB
- Enclosure: 105mm(W)x115(L)x35(H)mm, black anodized aluminum
- Size matches the cyber max micro enclosure


SAFETY NOTICES (please read):
- Do not attempt to overdrive the unit, when delivered these units are set to maximum sensitivity meaning 200-300mW of drive is sufficient. Not following this advice can lead to burning of the driver or final transistor.
- If you wish to use higher input power up to 1W please set jumpers accordingly, jumper position table is printed inside the box.
- Due to possibility of damage caused by overdriving the unit warranty does not cover final and driver transistor.


This product was added to our catalog on Friday 24 April, 2009.
 *Please select the quantity for each item you wish to order and click the 'Add To Cart' button below.
Displaying 1 to 3 (of 3 products) Result Pages:  1 
    Name   Model   Select   Price 
40W digital FM amplifier with SWR meter, MOSFET technology  40W digital FM amplifier with SWR meter, MOSFET technology     249.00EUR
120W mains power supply for 40W booster  120W mains power supply for 40W booster     99.99EUR
Replacement 40W final transistor  Replacement 40W final transistor     49.99EUR
Displaying 1 to 3 (of 3 products) Result Pages:  1 
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