You are accessing the Indian version of our site. Kindly access www.efxkits.com to reach our international edition which has products listed in USD
Hi Guest
e.g. - "communication: RFID" Search tips
Can we help you find a Project?
3 Hot Deals
Long Range Fm Transmitter With Audio Modulation
Rs. 5,099
50 in Stock
Buy
Rs. 3,499
50 in Stock
Buy
Rs. 2,899
50 in Stock
Buy
PROJECT DESCRIPTION

The aim of this project is to develop a low cost long range FM Transmitter with audio modulation. The FM transmitter has 3 stages, A (VFO) Variable frequency Oscillator (30 mw), a class C driver stage (150 mw) and a class C final power amplifier (1 Watt). Basically every FM Transmitter has to have a Voltage Controlled Oscillator (VCO). This is a high frequency oscillator whose output frequency changes based on the voltage applied at a particular control point. This is a variable frequency oscillator (VFO).Q1 with its associated components form the VFO.

The VFO output is fed to Q2. Q2 being an emitter follower does not load the VFO but amplifies the power only. Emitter follower output is fed to the final RF power amplifier Q3, the output of which feeds the tuned circuit. Several capacitors are used on the supply rail for HF filtrations .Feeding the VFO transistor Q1 directly with a microphone at its base it becomes a FM Transmitter circuit. At 12 volt DC it will deliver 1 watt RF power at 9 volt little less. With Yagi antenna at both at transmitter and receiver end looking each other at line of sight distance, the range can be up to 5 KM. The yagi antenna being very big, the design and fabrication details are only provided.

This concept can be extended and implemented in colleges or a university, where the latest happenings in a college can be known to the students by tuning to the frequency using an FM receiver.

Note:- The project is supplied with a stick antenna. However a yagi antenna as per the design supplied can be assembled by the user.

.

PROJECT HIGHLIGHTS
Easy to use, Self-explanatory kit.
All-inclusive solution kit.
Branding-free material.
Call/mail for Tech Support from 10 am - 7 pm.
Extensive audio-visuals available.
BLOCK DIAGRAM
Hardware Requirements
  • Transistors
  • Coils
  • Resistors
  • Trimmers
  • Capacitors & Antenna
Software Requirements
    None
Q & A
Q:  What is Audio Modulation?
A:  Audio modulation is modulating a audio signal with a carrier signal of higher frequency, so as to enable long distance transmission.
Q:  What is the range?
A:  The range is 20-30meter with GP or stick antenna or Yagi antenna up to 2KM
Q:  What is the FM band to receive the signal?
A:  The FM band is 88 to 108 MHz
Q:  Can any audio song be transmitted?
A:  Yes, audio song can be transmitted.
READ WHAT OTHERS HAVE SAID
Average Rating
 4.2/5
WRITE A REVIEW
Name
Email
Location
Feedback
Please enter security code
Quality
Price
Showing 4 of 6 reviews Show All
CHAITANYA ADITYA, VISAKHAPATNAM on 15th July, 2015, 10:27 AM

Yes the kit delivered at right time.All my queries were cleared.I am very much satisfied in building the project.

CHAITANYA ADITYA, VISAKHAPATNAM on 8th July, 2015, 06:30 PM

Yes the kit delivered at right time.All my queries were cleared.I am very much satisfied in building the project.

Ravi Malik, Delhi on 30th May, 2015, 05:03 PM

Yes the kit delivered on time with the right components.All my technical queries were cleared and your Technical support is ok i.e., Above Average.I am satisfied while building the project.Yes I recommend about Edgefx in future.

Siddharth Yadav, Ghaziabad on 3rd January, 2015, 11:20 AM

I didn’t get the kit on time because of some reasons.All my queries at the time of building the project resolved to my satisfaction, I didn’t contact you for technical support because everything was good.It was good experience in building the project.I will recommend but the projects are expensive.

Rating Breakdown (6 Reviews)
0
6
0
0
0
SIGN UP FOR NEWSLETTER

Edgefx Technologies Pvt. Ltd.,
Plot No. 105, 3rd Floor,
Liberty Plaza, Himayathnagar,
Hyderabad - 500029,
Telangana, India
© 2012 Edgefx Technologies Pvt Ltd. All Rights Reserved
Win Prizes worth Rs. 5,00,000 & above, National Level Competition on IOT (Home Automation & Monitoring over Internet) from 28th to 29th Aug 2015