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

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

25 W – FM Amplifier Pallet
Designed for fm radio transmitter , 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

ELECTRICAL CONNECTIONS
Warning – Operating without antenna or dummy load (50ohm) can permanently damage to broadcast equipment.
Warning – Check the output connection before applying DC voltage to the module.

HEATSINK MOUNTING/HARDWARE
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 fm transmitter.

1.HEATSINK TOOLING 
-Planarity: typical value 1μ
-Roughness: better than 0.05 mm
2.THERMAL COMPOUND 
-Paste with silicones
-Thickness: optimum between 0.06 mm and 0.15 mm, on the whole back surface
of the amplifier.
3.SCREWS 
-M3 hexagon socket head cap screws
-The recommended Torque is 12 Kg/cm for M3 type screws
4.TIGHTENING ORDER 
-See next figure: (all dimensions are in mm)

AMU300 - 300W FM RF Power Amplifier Module 88MHz-108MHz Input 2W output 300W

AMU300 - 300W  fm transmitter kits  Amplifier Module 88MHz-108MHz Input 2W output 300W

300 W – FM Amplifier Module
Designed for fm radio transmitter ,
this amplifier incorporates micro strip technology
and MOSFET transistor to enhance ruggedness
and  reliability.
SWR SENSOR / SWR PROTECTION
/ LPF ON BOARD

• 87.5 ÷ 108 MHz
• 48 Volts and 24V required
• Input / Output 50 Ω
• Gain: 18 dB typ 19.5 db max
• Class B Id=2mA
• Low pass filter on board
• SWR sensor on board
• Devices: MRF151 or equivalent + MRF314 (input section)

Dimension (L x W x H): 125 x 50 x 15mm [5” x 2” x 0.6”]
This picture is a mere example, it does not bind the
provided product

ABSOLUTE MAXIMUM RATINGS (Device Flange T = 70 °C)

Vdc  Drain Voltage Supply:52V
Idc Supply Current:12A
Vswr  Load Mismatch (all phase angles, Tc=40°C, Id=4A):3:1 Vswr
Pin  Input  RF  Power: 2W
Tstg  Storage Temperature Range : -40 to +80  °C
Tc Operating Temperature: +70  °C

ELECTRICAL SPECIFICATIONS (Base Plate T = 45 °C, 50Ω loaded, Vd = 28 V)

Operating Frequency Range: 86 ~ 109  MHz
Fundamental Output Power: 280 ~ 320  W
Input Power:  1~ 2W
Power Gain (300W output): 17.5 ~ 19db
Drain Efficiency (Load 50Ω): 60 ~ 65 %
Input VSWR: 1.5:1     1.7:1 Vswr
F2 Second Harmonic:  -70 ~ -80  dbc
F3 Third Harmonic :  -60 ~ -65 dbc

ELECTRICAL CONNECTIONS
Warning – Operating without antenna or dummy load (50ohm) can permanently damage to the  long range fm transmitter.
Warning – Check the output connection before applying DC voltage to the module.

3KW FM Transmitter 8U Compact Size Broadcasting Equipment

3KW fm radio transmitter 8U Compact Size Broadcasting Equipment

This is a compact 8U size FM stereo broadcasting equipment.
The advanced digital technologies, Digital Signal Processor (DSP)
and Digital Direct Synthesizer (DDS), are used in the transmitters to 
get little size , high performance and high reliability .They are widely
used for professional radio station to transmit high quality radio broadcast equipmentradioprograms.

Features,

*  Hearing similar to CD
*  All-digital technologies DSP+DDS
*  Build-in audio signal limiter
*  Analog and digital (AES/EBU) audio signal input directly.
*  AGC circuit to keep the Output Power stability.
*  Big LCD display all the parameters in real time.
*  Communication Interferface by RS232 for remote
*  Five kinds of protections for the security
*  Stainless steel cabinet
*  Easy to upgrade to synchronized transmitter
*  Compact structure

SPECIFICATIONS 

1.Frequency Range:                       87.0MHz～108.0MHz 
2.Frequency Setting step:               10KHz 
3.Carrier Frequency precision:        ±200Hz 
4.Residual Wave Radiation:            ≥67dBc 
5. Audio Input Impedance:               600Ω, Balance (for analog) 
110Ω, Balance (for digital AES/EBU) 
6.Stereo Separation:                          50dB(30Hz~15KHz) 
7.Audio Input Level:                         ±10dBm，step 0.01dB 
8.S/N:                                            ≥75dB(30H～15kHz,100%) 
9.Audio Harmonic Distortion:            <0.1% 
10.Audio response:                          ±0.1dB(30Hz～15KHz) 
11.Output Load Impedance:             50Ω 
12.Output Power:                             0~3000W 
13.Pre-emphasis:                           0μS，50μS，75μS 
14.Deviation:                                   ±75kHz 
15.Pilot Frequency:                          19 kHz±1Hz Pilot Signal Modulation: 8%～10% 
16.Sub-carrier Suppression:            ≥65dB 
17.RF Output Interface:                    7/8'Flange 
18.Size:                             1300mmx700mmx550mm 
19.Weight:                           60KG