Solo Gnu Radio Companion Assignment – Pirate Am/Fm Radio Station Ee401 Assignment

1208 words - 5 pages

Solo GNU Radio Companion Assignment – Pirate AM/FM radio station Project
In this project I am going to create radio station that will connect two computers through two kind of modulation AM and FM.
AM modulation:
Amplitude Modulated (AM) radio signals transport an audio signal (electrical material that can be transformed to sound). The audio information is encoded on the radio wave by changing the amplitude of a high frequency radio wave. The base frequency of the radio wave (called the carrier wave) is much higher than the frequency of the audio information it carries (915MHz).
The AM transmitter components are as they are in figure1-1:
· Wave file source to upload the wav file to the GnuRadio companion which get multiply by a constant to increase the amplitude and I add a Throttle to reduce the CPU usage.
· This will take us to the Low Pass Filter that will take off all the noise frequencies over 5K.
· The Signal Source gets multiplied by the message signal to create the modulated signal.
· The Rational Resampler this block is used to convert from one sample rate to another which I left the decimation 1 and the interpolator 1.
· I have Osmocom Sink that will transmit at the 915MHz frequency.
· Variables:
· Sample rate of 2MHz.
· RFgain Slider from 100 to 300 to change the RF gain on the transmitted signal.
· BBgain Slider from 0 to 300 to change the BB gain on the transmitted signal.
· Freq Slider to adjust the frequency from 915MHz and 2.14GHz
· WX GUI FFT Sink to show FFT scope as we can see in Figure1-2.
Figure 1 -1 AM Transmitter Block
Figure 1-2 AM Transmitter sink
The AM receiver components are (figure1-3):
· RTL-SDR Source will receive the transmitted signal from the other laptop by the antenna in 914.94 frequency.
· Low Pass filter will cut off all the frequencies that higher from 5k to keep the transmitted only without the carrier.
· AGC2 to control the gain with Attack Rate of 625u and Decay rate on 10u.
· We convert the complex data to magnitude in float by using Complex to Mag.
· Multiply by Const to reduce the amplitude by 50m rate.
· Rational Resampler is used in this block to prepare the signal to the Audio Sink by 441 interpolation and 2K decimation.
· Audio sink to communicate with the laptop audio card.
· WX GUI FFT Sink to tune the radio on the make sure that we are in the right carrier frequency.
Figure 1- 3 AM Receiver Block
Figure 1-4 AM Receiver Sink FFT Plot
FM Modulation:
To generate a frequency modulated signal, the frequency of the radio carrier is changed in line with the amplitude of the incoming audio signal. When the audio signal is modulated onto the radio frequency carrier, the new radio frequency signal moves up and down in frequency. The amount by which the signal moves up and down is important. It is known as the deviation and is normally quoted as the number of kilohertz deviation.
the signal has to be demodulated at the receiver that will be enable the frequency variations of the incoming signal to...


Monologue about the novel called:" I am the messenger". - School - assignment

919 words - 4 pages close friend, (pause slightly) who would understand me more than myself. 5. Option 2 – Why would it be worth doing? Why would it not? Hold on! (Rushed) Is it the right choice to love Ed? She stands up and moves around her room. However what the hell am I thinking now? Have I falled in love with him yet?... I am not sure that I could love him. The past was a tough childhood that aren’t allowed me to love someone completely, that’s why I don’t believe

problem set 7 for Macroeconomics. Government Savings, IS-FE-AM graph - columbia sipa ECON - assignment

1183 words - 5 pages Macroeconomic Analysis for International and Public Affairs U6401 Problem Set 7 Due on April 2 at 6:00pm 1. Please drop your homework in mailboxes 7 or 10 in the 6th-floor mail room, close to the Office of Student Affairs. 2. You only have to submit ONE homework paper per group. 3. Please make sure you write both first and last names of each group member on the first page of the homework paper. 4. While your answers should be typed, you do not

Time graphs for maths as a practice good for maths experience practise makes perfect am I right? - Maths - Maths research assignment

669 words - 3 pages Page 1 Set 1 – Drawing Displacement-Time Graphs 1. The table below shows the movement of a car as it travels along a straight road. Time (s) 0 5 10 15 20 25 30 35 40 45 50 Displacement (m) 0 3 6 9 12 18 32 40 40 32 20 a) Graph the data on the grid below. ! b) Determine the displacement at 27.0 s. …………………………………………………………………………………………………………………….. c) Identify how long the car took to travel 13.0 m. …………………………………………………………………………………………………………………….. d

Paper On Untitled

608 words - 3 pages Radio Radio becomes Americas second national mass medium after magazines - 99% of American's homes have radios - 95% of American's cars have radios - 40% of Americans listen to the radio between 6 am and midnight - 7% of Americas bathrooms have radios in them Radio: A technological Leap 1835 Samuel F. B. Morse demonstrates his electromagnetic telegraph system March 10, 1876 Alexander Graham Bell sent a message to

Communications History Essay

1216 words - 5 pages because lightning and other sources of radio add their radio waves to the ones from the transmitter. The Amplitude Modulated (AM) radio was invested by Reginald Fessenden and Lee de Forest so that more than one station can send signals in 1906.The FM broadcast radio is set at a much higher frequency than the AM radio. The FM radio uses frequency modulation where louder sounds at the microphone cause the transmitter frequency to fluctuate more while

Does The Thing By John Carpenter Reinforce Or Challenge The Status Quo? Is The ‘Signature Style’ Evident? Discuss With Reference To Both The Film’S Semantic And Syntactic Elements

3168 words - 13 pages ELECTRONIC ASSIGNMENT COVERSHEET Student Number 32367542 Surname TAN Given name JUN RONG KENNETH Email Unit Code MCC 248 Unit name SCREEN TEXTS Enrolment mode INTERNAL Date 7 February 2014 Assignment number 1 Assignment name INTRODUCTORY ESSAY Tutor MS JESSLYN LAU Student's Declaration: Except where indicated, the work I am submitting in this assignment is my own work

The Reclaiming Of Masculinity: A Regression Of The Female Voice In Mainstream Rock Music

2513 words - 11 pages research, I will reference recent Billboard "Hot Modern Rock Tracks," "Hot Mainstream Rock Tracks," and "Top Rock Albums" charts to record the influences of female musicians, and I will document the genders of musicians played in a select amount of time during afternoon hours on a Clear Channel Communications-owned rock station, WTKX FM 101.5, better known as TK 101. I also intend to make use of numerous scholarly articles which focus analyzing the

On The Beach The Assignment Was To Respond, In Journal Format, To The Aforementioned Novel, And To Mention The Main Charcters And Analyze The Emotional And Spiritual Effects Of The Main Events

806 words - 4 pages no luck. This, although in my heart of hearts I knew as to be the case, made me depressed, but I picked my self back up again, because I feel that there is no reason to live out my remaining days in depression until the sickness consumes me, while everyone else in the world is either dead or dying. The sub set out again, to search for life along the California coast and to explore the possibility of a living person sending out a radio station

Internet Radio

1022 words - 5 pages and not to just re-engineer the old methods with new technology. Internet radio systems already offer potential for change to broadcasters, but potential to do what? The question is will the new methods of transmission really change radio, or will it be essentially the same as it has been for the past one hundred years? At present, even with Internet broadcast, choice is limited to the station selected, time of day, and turning it off.Radio

the social and political role of the media - cdu and nursing - essay

423 words - 2 pages Task:  Essay (Media assessment)  Value:  40% Due date:  Monday, Midnight Week 13 Length:   2,000 - 2500 words (excluding references) Instructions :  This is a written assignment, students are expected to: Critically analyse the role and power of the Australian media. Its influence and potential impact on culturally safe health care in multicultural Australian society. Please use two media articles  For the purposes of this assignment, the

Oral History of Media in the 20th century - Mass Communication - Oral history report

1343 words - 6 pages . However, she explained that when FM came out that is where all of the music was played, while AM radio was talk radio and the news. TV/Cable: When TV became available for households, Jerri said there was another house on her street who had bought the first one in her neighborhood. Unlike today, she told me how that family would let all the neighborhood children come over to their house to watch Howdy Doody on their television set. That amazed me

Justice studies review theory define - JS100 - assignment

457 words - 2 pages Assignment #1: Defining Justice Although the Criminal Code has specific definition for defining justice, when it is applied in the theoretic to society it appears to be just in fair dealing with crime. However, when applied in reality a singular definition of justice does not encompass or take into consideration the historical context of certain individuals, the environmental, or situational factors that may have occurred or the burdens and

PE 2 BusMgt 2321. The second personal explanation assignment. - The Ohio State University/2321 - Assignment

1417 words - 6 pages THIS PAGE WITH YOUR EXERCISE Problem 2 – Advertising Mix As part of your summer internship for a smaller Columbus startup, you have been tasked with vetting different alternatives with the goal being to affordably increase exposure, which will lead to more sales of the startup’s products. You have several options for increasing exposure, each targeting specific demographics and products. You can buy advertisements with a local radio station, buy

Destiny's Agenda for Diabetic kids - Health - Assignment

680 words - 3 pages DESTINY Extreme Weekend April 27, - 29, 2018 AGENDA – SCHEDULE OF EVENTS 69 REGISTERED Friday, April 27 Time Activity Location Activity Leader Volunteers Needed Supplies 2:00 pm Arrival Time Staff/Volunteer Arrival & Registration Set-up Dining Hall JOHN & BILL All Volunteers Color-Coded Balloons & Helium Index cards for bed assignments Poster board, Markers and Easel(s) 3:30 pm – 4:00 pm Volunteer Orientation & Training Review of Roles Radio

Water cycle and how water flows - Year 8 - Humanities diagram

1126 words - 5 pages intend to raise money to start your business. · Will your business be sole-owned, a partnership, or a corporation and why. Your business plan should be at least 500 words. This first section is worth 30% of your overall term grade. This paper must be handed in along with your assignment. Due by Friday May 5, week 3. Assessment #1 Rubric Criteria Low Medium High Very High Original Idea discussion No originality. Your product will be lost amongst