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DIGITAL 25W FM BOOSTER+ with SWR meter  

Digital MOSFET 25W 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 any LPFM (low power fm transmitter) on the market. It takes the signal and amplifies it to the full power of 25W. 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 internal jumpers). No tuning is required as the amplifier is a fully wideband design. 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 4-6A) 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+ in this video. 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 50mW to produce full 25W of power
- It CAN be used with PCI MAX cards or other small FM transmitters (up to 1W max.)

Technical specifications:
- RF Input Power: 20-1000mW (level selectable via 2 jumpers)
- RF Output Power: 20-25W typ (30W 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/4-6A, 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 50mW 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 Monday 27 October, 2008.
 *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 
25W FM BOOSTER+  25W FM BOOSTER+     199.99EUR
70W mains power supply for 25W booster  70W mains power supply for 25W booster     49.99EUR
Replacement 30W final transistor  Replacement 30W final transistor     39.99EUR
Displaying 1 to 3 (of 3 products) Result Pages:  1 
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