RFU25 - 25W FM RF Power Amplifier Pallet 87.5MHz-108MHz Input 1.2W output 25W

Total:166 USD

Item:156 USD   Shipping:10 USD

25W FM RF Power Amplifier Pallet 87.5MHz-108MHz Input 1.2W output 25W

25 W – FM Amplifier Pallet
Designed for FM radio transmitters, Drivers
this amplifier incorporates microstrip
technology to enhance ruggedness
and reliability
optional regulator on board
for output Power adjust

87.5 ÷ 108 MHz 1.2W input
• 28 Volts
• Input/Output 50 Ω
• Pout : 25W min 32W max
• Gain : 13 dB typ 14 db max
• Class A B
Low pass filter on board
• Devices: MRF314 or equivalent


Dimension (L x W x H): 150 x 50 x 15mm [6" x 2" x 0.6"] This picture is a mere example, it does not bind the  provided product

Vdc: Drain Voltage Supply:30V
Idc: Supply Current:3A
swr: Load Mismatch (all phase angles, Tc=40°C, Id=4A):10:1SWR
Pin: Input RF Power: 3W
Tstg: Storage Temperature Range  -40 to +80  °C
Tc: Operating Temperature: +70°C

ELECTRICAL SPECIFICATIONS (Base Plate T = 45 °C, 50Ω loaded, Vcc = 28 V @ 1.9A)

Operating Frequency Range: 86-109MHz
Fundamental Output Power: 25-35 W
Input Power: 1=1.2W
Power Gain (50W output): 13-14 db
Collector  Efficiency (Load 50Ω):60-70 %
Input  SWR: 1.5:1   2:1 SWR
F2 Second Harmonic: -60 ~ -70  dbc
F3 Third Harmonic: -55 ~ -65 dbc

Warning – Operating without antenna or dummy load (50ohm) can permanently damage to the RF power transistor.
Warning – Check the output connection before applying DC voltage to the module.



Warning – This module must be place on a heat sink that is at least 160X80X30 mm
If the module will be over heated above 50°C – Air fan should be applied to the heat sink.
Warning – Overheating can cause permanently damage to the power transistor.
-Planarity: typical value 1μ
-Roughness: better than 0.05 mm
-Paste with silicones
-Thickness: optimum between 0.06 mm and 0.15 mm, on the whole back surface
of the amplifier.
-M3 hexagon socket head cap screws
-The recommended Torque is 12 Kg/cm for M3 type screws 
-See next figure: (all dimensions are in mm) 



Total:166 USD

Item:156 USD   Shipping:10 USD

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If you don't have PayPal or Credit Cad, You can pay to us with Western Union , Money Gram or Bank Transfer
How far(long) the transmitter cover?

The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far.

EXAMPLE 5W FM Transmitter use in the city and hometown:

I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile).

I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile).

I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft).

Below are the approximate range of different power FM Transmitters. ( The range is diameter )

0.1W ~ 5W FM Transmitter :100M ~1KM

5W ~15W FM Ttransmitter : 1KM ~ 3KM

15W ~ 80W FM Transmitter : 3KM ~10KM

80W ~500W FM Transmitter : 10KM ~30KM

500W ~1000W FM Transmitter : 30KM ~ 50KM

1KW ~ 2KW FM Transmitter : 50KM ~100KM

2KW ~5KW FM Transmitter : 100KM ~150KM

5KW ~10KW FM Transmitter : 150KM ~200KM

How to contact us for the transmitter?

Contact: Sky Blue 
Cellphone: +8615915959450
WhatsApp: +8615915959450
WeChat: 727926717  
QQ: 727926717
Skype: sky198710021
E-mail: sky@fmuser.org

Tell me
1.How far you want to cover in radius ?
2.How high will you install the antenna ?
3.Where are you from ? What is your detail address, so that we can check the enviroment there.
And we will give you professional advice.

About Us

We specialized in production and sales of FM / TV Transmitter , FM / TV antenna , the FM / TV transmitter accessories. We have been exporting FM /TV transmitter for 6 years. We have clients all over the world, not only the resellers but also the consumers. With 6 years experience in this field ,we have professional team and excellent aftersales service. We dedicated in supplying the best quality products with competive prices and excellent customer sevice! If you have any question about it , No matter you buy or not, please feel free to tell us your questions,we are very willing to help you and solve your problems. Contact email : sky@fmuser.org

Our Factory

We have modernization of the factory . You are welcome to visit our factory when you come to China.

At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office . If you come to China , you are welcome to visit us .

At Fair

This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together.

Where is Fmuser ?

You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office .

FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway station, xiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate .

Contact: Sky Blue
Tel: 86-20-87597795 Fax: 86-20-87588285
Cellphone: 86-15915959450
E-mail: sky@fmuser.org
QQ: 727926717
Skype: sky198710021
Address: No.1502 Room HuiLan Building No.273 Huanpu Road Guangzhou China Zip:510620

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    Last name : Li
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If the package more than 100kg , we will send via DHL or air freight. It will take about 3~7days to your hand.

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All of our item have 3 month Warranty .
Contact US--->>Return the item to us--->>Receive and send another replace .

Name: Liu xiaoxia
Address: 1502Fang HuiLanGe HuangPuDaDaoXi 273Hao TianHeQu Guangzhou China.
Phone: 08615915959450

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