FM Transmitters

NIN100, a 50 Watt FM Transmitter has a very high specification and is more than a match in technical quality to any professional FM transmitters on the market at much higher prices.

NIN100 uses 1 W PLL drive to produce upto rock steady 50W. The nine element low pass filter has been used to keep spurious and harmonics within the EU/ International specification. NIN100 is possibly the only transmitter manufactured in India that has undergone vigorous testing in government laboratory and has been certified to be adhering to ITU-R standards.

This unit is designed with high reliability in mind. NIN100 uses high gauge aluminium cabinet with oversize heat sink and high CFM fans for better temperature management.

Installation of NIN100 does not require expensive test equipment. A high gain stacked dipole antenna with CNT400 cable it is very easy to achieve 100 W EIRP.

 

TECHNICAL SPECIFICATION

 

No

Parameter

Value

 

RF Section

 

1

RF output power at 24V DC

0-60W

2

Output connector

50 Ohms N type

3

Frequency range

87.5-108MHz

4

PLL steps

50 KHz

5

Frequency stability

+/- 20Hz, input for TCXO (external high precision clock). Crystal Controlled. Quartz locked PLL.

6

Spurious/Harmonic rejection

Harmonics: >50dB, Spurious: -90dB

7

Power supply (50W model)

24-32V/5A

8

Audio performance

Flat sensitivity across FM band, less than 0.1% distortion, 20Hz-75 KHz

9

RF output ruggedness

SWR protection, Polarity protection, temp protection. Over-current protection

10

Pre-emphasis

50uS, 75uS or none selectable

11

Audio Input Impedance

1Kohm, unbalanced, 2 - pin jumper and solder posts

12

Audio Input Level

0 dB

13

S/N ratio

>90 dB

14

Audio connectors

RCA or XLR

15

RF monitor

Built-in with RCA connecotor

16

Indicators

LCD indicator for Power, DC Voltage, Current, Fault alarm, LED indicators for SWR and Audio Levels

18

Cabinet

Standard 19” Rack Mountable

19

Envrionmental

Suitable for ambient temperature upto 45°C

 

 

 

 

Audio Section (Stereo Encoder)

 

20

Audio Response

10Hz-15KHz, 15kHz lowpass filtered (standards require upper level at 15KHz max)

21

Pre-emphasis

50uS, 75uS or none

22

Audio Input Impedance

10K, balanced or unbalanced

23

Audio Input Level

0 dB

24

Digital audio input

USB connector, Windows/Linux compatible

25

Distortion

<0.01%

26

S/N ratio

>85 dB

27

Separation

>65 dB typ. (more than any radio receiver you can buy on the market)

28

Pilot Frequency

19 KHz, DSP generated with 32x oversampling

29

Output Impedance

75 Ohms