Search for am in Topics


Am I in?

I followed all the instructions posted on Etsy to enter this contest, but when i click to see the items entered, my item doesn't come up? What did I do wrong?

Topic by beadsandlace    |  last reply


am antenna connection problem?

My tuner has seperate places to connect am and fm antennas.  The am connection is intended for 2 wires. I just bought an am antenna and discovered that it  has a plug end, not a bare wire end. Is there some sort of adapter/connector I can use?   I don't want to strip the wire. I think I need the equivalent of a reverse banana plug - instead of wire in, plug out - I need plug in, wires out. Any help / suggestions appreciated.

Question by re-tired    |  last reply


HOW CAN I PLAY CASSETTE TAPES ON AM RADIO? Answered

I would like a cheap and simple way to play from a battery operated cassette player using the earphone jack to an AM radio. prefer to broadcast to the radio which is only a few feet from the tape player. Also if there is a simple way to just hard wire it , that would work also, but I prefer to broadcast. Sound quality is not important.

Question by OLDCAR    |  last reply


Simple AM transmitter

I wish to make an extremely small (size and part count) AM transmitter using only a few transistors and passive components. I wish to transmit an audible tone on a set frequency.I am thinking along the lines of a transistor flip-flop circuit oscillator, perhaps routed through another. It really needs to have less that five/six small components. DIP components are too big. Small electrolytic and other capacitors, transistors, and resistors are acceptable. Transmission distance needs to be at least 1/4 of a meter, but further is better. It needs to run on between 1.5 and 6 volts, low to middle'in milli-ampage im thinking watch batteries for a few hours at least. I have read the following article but as stated before it needs to be very small. https://www.instructables.com/id/Make-a-simple-AM-transmitter/Can anyone help me out with a schematic, thoughts or advice?Thanks in advance,-AndyP.s. I can work out transistor loop timings and I understand how the Amplitude Modulation system works. Current thoughts/plans (if you can call them that) are an audible tone switching a secondary transistor loop from high (no resistor in series) to low (resistor in series) power and back. The secondry loop will be switching at the target frequency.

Topic by andy    |  last reply


Is it possible to build an AM radio transmitter with only discreet components?

I don't need to have it have good quality. I'll only be sending morse code, so I don't need any type of audio clarity. If it's possible with discreet components, can you provide a schematic? If not, could I use a 555-based circuit? Again, schematic please. Thank you! (For anyone who doesn't know, discreet components means no IC's , otherwise known as "chips".) EDIT: I'd also like to not use a crystal osscilator. Thanks!

Question by 4lifenerdfighter    |  last reply


Is it possible to hack an AM transmitter that transmits at about 1500KHZ to be used as a cellphone jammer?

I know that the band for cell phones is between about 800-1990MHZ and I was wondering if it would be possible to hack an AM transmitter or for that matter an FM ipod type transmitter into the cell phone range like KipKay did in his instructable with a reciever so that if you transmit noise it would disrupt the cell phone call and make them hang up. This is just an idea I had that would be the alternative to creating a jammer like the Wave Bubble made by Lady Ada that would be a lot easier and cheaper. This is not intended for bad purposes, its just for fun. I might not even make it but I am still wondering if it would work.

Question by beak90    |  last reply


97 GRAND AM-DRIVERS FLOOR BOARDS LEAK IN FRONT & BACK FLOOR BOARDS????

WHEN IT RAINS MY DRIVERS SIDE FRONT & BACK FLOOR BOARD HAS A AWEFUL LEAK & I HAVE CHRONIC ILLNESSES & AM NOT SUPOSE TO BE AROUND THE MELDEW, I'VE LEFT MY WINDOWS CRACKED TO HELP SOME, BUT LEARNED THAT ABIT TO LATE, GRRRR.... I'M ON LOW INCOME & I'M ON A FIXED INCOME & SO TrYiNg TO FIGURE OUT AWAY TO MAKE ALL FALL INTO PLACE IS IMPOSSIBLE & IS DEEPLY NEEDED... CAN YOU "PLEASE" HELP WITH ANY SUGGESTIONS? APPRECIATE YOUR TIME & UNDERSTANDING... BRIGHTEST BLESSINGS ALWAYS...

Topic by 1997 pontiac grand am    |  last reply


Am I weird?

So... I'm starting to think that I am weird... because I like art like Mona Lisa, Arnolfini's marriage, and stuff... But I love stuff like death metal. It's just like watching Mona Lisa headbang. I like doing origami... but I like metal drumming. It's like seeing someone like AdamsSara from Youtube playing a constant double bass to death growling. I am actually very polite, but if you knew me for real, you would think I am someone who would like cut school (which I don't). It would be funny though. It would go something like this: Me: *Walks into convenience store* Dude Behind the counter: Aren't you supposed to be in school? Me: Why yes, thank you for saying that. Now give me all the money in the register please. If you don't mind. I won't hurt you. Dude behind the counter: No Me: Thanks anyway, please don't call the cops on me. *Laughs* Am I weird?

Topic by Flumpkins    |  last reply


Best configuration for an AM receiver?

Hi all. I am trying to make a circuit that would help me find lost keys. It would be a simple beeper/ noise maker triggered by AM (for simplicity). I want it to be small and, if possible, cheap. What would be the best approach? Should I use the incoming signal to 'trigger' a 555 oscillator or should I send the 'beep with the signal (The transmitter can be as big as required)? Also, most of the circuits I found online were for tune-able radios. If I want to center mine at 1 MHz and if the quality of the sound is not important, how simple can I make the circuit (while still keeping it sensitive)?

Topic by utkarshsinghal    |  last reply


555 Am Transmitter Circuit Diagrams?

I have two ICM7555 CMOS 555 timers, and I was wondering if anyone has any good am radio transmitter circuits that incorporate two (or one!) 555 timers.?

Question by BurningSandman    |  last reply


Simple and CHEAP voting system - AM?

I'm a teacher, and I have a little (but not a lot) of money to spend. I'd really like to buy something like a Quizdom voting system, but with anything up to five classes of 26 running at once, it's just not financially possible. Which got me thunking... AM radio transmitters are cheap to build right? I've seen one using a 555 timer and an NPN transistor - these cost pennies - use to transmit voice. Could I instead transmit a BEEP - or high tone or something - each timer on a slightly different frequency? And have a single receiver which then listens across this frequency range and identifies which frequency is transmitting the tone or signal and feeds that back into... PC, Arduino, Raspberry Pi? Range would only need to be like 5-10m.

Topic by ohowson    |  last reply



2001 Bonneville AM radio reception poor, how to find antenna?

I have a 2001 Pontiac Bonneville. I listen to AM radio 90% of the time. I bought the car new, and for the first few years the AM reception was great. Now it's mediocre. I suspect a corroded AM antenna wire conenction somewhere but how do I find the AM antenna to check the whole length of it and all the connections?

Question by chuckr44    |  last reply


Can anyone help me build a FM or AM transmitter and receiver?

I found on the www many schematics but not togheter. I want to be a good and a stereo transmitter and receiver. Can anyone help me with a schematics for the both? I need with easy to find and cheap components, because i dont have many money, thats why i want to make and not to buy.

Question by danyelo    |  last reply


How can I Find help to repair an old-time AM Silvertone radio and the best place to buy tubes for it?

Maybe you can help me. I live in Kobe, Japan and am trying to restore a Silvertone 6327 (1947) radio (American). Recently I tried to replace the electric cord that plugs the radio in to a wall socket (the line cord). In doing this I soldered the "radio" ends to two terminals on a 35Z5GT tube. I then plugged the radio in. turned it on, and waited for it to warm up. At first the radio simply made a low humming noise even when I tuned it across the dial (no reception). After about two minutes the 35Z5GT tube briefly lit up and then died (like a "nova"). I'm afraid I may have done something wrong when I tried to attach the new cord line to that tube's terminals. I need to find someone who knows about repairing such a radio to see what the problem is. I want to do this before I replace the 35Z5GT so I don't just keep burning it out (which may happen). Do you know of any such radio repair shops in the Kobe/Osaka area? By the way, I know the radio works as I tested it before I did my "repairs." Also I would like to know is there a source of old tubes anywhere in Japan so I don't have to have them shipped from America? I have read the instructable on how to restore old-time radio; it was very good! Maybe the author of that piece can help me. Below is a picture of the radio from the Web (mine doesn't look quite that good. Thanks for taking the time to help me on this if you can. Bob Austenfeld

Question by austen23    |  last reply


Variable Capacitor Replacement?

Do you think it would be possible to substitute a variable resistor and a normal capacitor for a variable capacitor? The way I figure it is that a variable capacitor is supposed to adjust how fast said capacitor charges and discharges, wouldn't a variable resistor and a normal capacitor also function like this? I'm working on an idea for a small am radio, and looking to substitute these parts. Could it work? Thanks

Question by transistorguy    |  last reply


Tesla's "magnetic wave" communications idea proposed for mine safety

A report in Science Magazine describes a proposal to use Nikola Tesla's magnetic amplitude modulation as a way for trapped miners to communicate with the surface.

Topic by kelseymh    |  last reply


Will the Waves ever Die?

Think about it, the age is the Digital Dawn of the day, anologue Television is already being planned to me completely removed from the air waves in 2009 to make way for the "supposedly" DIGITAL SUPURIOUR HD crap. I don't watch that much TV to begin with so it doesn't bother me. But what about FM radio, is that ever going to die? Chances are probably not for a few years, seeing how the AM spectrum is still kicking around. How long can our traditional ways last? I'd be fairly sad to see FM leave the game. Really, we've had radio since the dawn of the technical age, from the 40's through the 80's (remember the days?). I just wanna see what anyone else has to say.

Topic by Punkguyta    |  last reply


WHAT TO DO WITH AN OLD AM-FM RADIO ?

I have a poclet am fm radio that i tried for kipkays transistor radio hack but i noticed mine doesent have a transistor but i play with the coils anyway......... i tried it it still works but some stations cant be picked up....im thinking of turning it into something else thats easy and to the point...any suggestions?

Question by mastermakoko    |  last reply


Is it possible to create a 555 timer AM transmitter with a serial connection to a pc?

I am only wondering and it would be awsome instead i would have to buy a HAM radio, (BTW i have my amature radio licence) The reason for the serial connection would be so i can play some of my music though it, or maybe even if USB or Fire-wire could be posible

Question by dvdragond2    |  last reply


Can I get some help with a single transistor am receiver? Answered

I just built an AM radio circuit from a diagram I found on the net. I have everything hooked up correctly but I cannot get anything to come in. not even static. The diagram can be seen here [http://www.circuitdiagram.org/images/simple-am-receiver-diagram.gif] My thoughts are that maybe the signal is too weak for the ear phones I have and that I may need to use an op amp. The coil is 26 gauge magnet wire wrapped around 80 times on a toilet paper roll. This should be equivalent to around 1mH according to the inductor calculator I used.   The trimmer was one I salvaged from a broken radio. It measures 10pF to 90pF.  Those combined should give me close to the AM frequency band range I need. Can anyone offer any advice? 

Question by atrumblood    |  last reply


I am new

Hi, I am maria hall. I am new to this forum discussion.

Topic by Maria Hall    |  last reply


I AM AWESOME

I AM GREATER THAN EVERYONE HERE COMBINED!

Topic by urmomsux    |  last reply


Hooking up an FM antenna?

I recently got a new power amplifier/tuner from my dad's buddy. On the back, where you hook up the antennas, there are 4 terminals: 2 for FM and 2 For AM. One on the AM side is for the antenna, and the other is ground. This make sense to me, because an AM loop antenna has two wires which need to be hooked up. On the FM side though, it also has a terminal for ground... From what I understand, FM antennas are composed of a single "wire", like those coming out of radios or the ones on cars. What's the ground on the FM side for?

Question by tylervitale  


Am I blind... or?

Has the "fave" feature been discontinued?

Topic by bajablue    |  last reply


I am the answer...

...to Life, The Universe and Everything.

Topic by Kiteman    |  last reply


AM transmitter design ??

Is it better to use a diode for DSB SC modulation for good range ? or it's better to use npn transistor ?

Topic by walidj    |  last reply


Am I Common? Answered

I really want to  know how many people actually have heard of me can you answer????

Question by highvoltageguy    |  last reply


AM Radio Reception

Any one know how to build a super antenna for pulling in AM signals from far distances i live in the boondocks and AM radio reception is lousy at best i've tried rigging up standard wire antenna and wound my own various contraptions nothing seems to pull the signal in stronger it comes in fair during the day but at night almost nothing but skipping and noise ... Any Suggestions  Thanks

Topic by fretted    |  last reply


Am I in danger? Answered

I am building a new tazer design, based off of my diy taser circuit, powered by a 9 volt. I shocked myself in the right temple ( don't ask ) and I am wondering if it could harm me. How much voltage an I getting? Btw ever since I shocked myself my right eyelid "flutters" rappidly every now and then, a few times a day.

Question by XOIIO    |  last reply


I am going

I may be gone from instructables for three days... :( I am going on a family holiday to Amsterdam, Netherlands. I have never been there before... I will try take some photos of Amsterdam before I come back and show it to yall. Leaving on Thursday, 11, September, 2008. Returning on Sunday, 14, September, 2008.

Topic by Plasmana    |  last reply


I am CRUSHED.... :-(

I had finally gotten my "project" (for the gift exchange) finished, well except for some cosmetic touches to make it look nicer then it did.  I tested it for the last time, and a wire crossed and the speaker when POOF in a puff of smoke. This thing has me so depressed at not being able to finish it and get it sent that I am having troubles just getting back in and tearing it all out to replace the speaker and maybe put in a dampener resister to prevent it from happening again......I AM going to finish this one way or another......just wanted you all to know I am having to deal with a lot lately (my Mom becoming ill and maybe needing full time "residence in a facility" and being the only one left in the family willing to do anything, a whole lot has been dumped into my lap since July. But I DO intend on getting this out somehow, but Tuesday...but I am so sorry for this horribly long delay.

Topic by Goodhart    |  last reply


Am I phsycic?

I've never really believed in the whole phsycic thing, but I have an open mind and I'm starting to wonder. every now and then, I will see something, be it a word, sentence, picture, or sign before I see it for real. It happens with completely random thing I have never seen before. I also get feeling that tell me to do or not do something, and they are almost always right. It can be anything, such as not to bro g a toolbox because I felt that it would work out, and I got one for free, to bringing a screwdriver to school just in time to fix a loose microphone. So, am I mildly phsycic? If I am, are there any sort of exercises to help me phocus or develop my ability. Any help is appreciated.

Question by XOIIO    |  last reply


I am not dead

I am sure the tiny couch proved that much, but it has not testified of my other projects, which do exsist. I just either forgot to take good pictures or lost parts of the pattern or a combination of both. I have recently made this really awesome dice bag, which I will make an attempt to put up here, no promises though. The other big project I have made was my very first doll, one based off the anime character Madoka Kaname. And she looks awesome. I would show you pictures of them both, but they are not currently in my possession. Both, along with several other projects, have been entered in my county fair, and most gained me some more ribbons. As for future projects, I have two commissions from my siblings that I am going to make, one being a hydra, the other being this Hulk bird... thingie. I am going to try harder to get these on here for you, and hopefully you will be able to see them too. One last subject, I am currently in the process of setting up an online shop to sell the things I make. If anyone has any suggestions that may help me along the way, I would love to hear them.

Topic by Little Dragon and Company  


I am home.

My dear friends, Its been quite some time since I was last seen here, more than 6 months I guess. I see today I missed lot many contests, missed the winnings of many of my lovely friends & followers, missed their awesome instructables and their awesomeness. I received emails from you, asking me about my well being. Thank you so much for your concerns. I missed instructbale so much but  all I can say that the only thing which kept me away from it were life priorities.  Now I am back home and I am not going anywhere. During this period, few things happened, which I feel I must share with all of you. Hope you will like it, and please forgive me for the fact that I kept it away from you. Here they are: http://www.kwikdeko.com/blog/diy-boring-mats-to-an-exciting-decor/ www.kwikdeko.com/blog/ignored-cartons-to-corrugated-art/ www.kwikdeko.com/blog/do-not-throw-your-junk-bottles http://handmade-jewelry-club.com/2013/11/featured-diy-beach-inspired-jewelries.html You are awesome. Thanks

Topic by Tarun Upadhyaya    |  last reply


Why I Am Not Posting Anything

Well, we just got back from a vacation in Italy from my grandma's house, and my mom is always saying that there are dog hairs in grandma's house, thats dirty, and she's allergic to dogs, it needs to be washed, blahdiblahdiblah! And because i kinda lost skills thanks to the waiting. (We're now 3 weeks further, still not washed) Sorry to you guys, hopefully i will get it back soon. Oh, and my computer crashed, thats a reason too. -Viccie.B1993-

Topic by Skreetsha    |  last reply


For a Simple AM Radio Circuit (crystal radio w/amplifier) Does the Earth connection only apply to the tank circuit? Answered

So in case the question in the title of this post wasn't clear. I would like to know if, for an am radio circuit, a very simple one consisting of a tank circuit and a amplifier circuit. Does the entire circuit need to be grounded to EARTH or just the "tank" part of it?

Question by atrumblood    |  last reply


Simple radio transmitter question Answered

I am interested in building a small low powered radio transmitter. Searching the Instructables website I found some Instructables that have some with oscillators: Build a very simple AM Transmitter Make Your Own Low-Power AM Radio Transmitter Some other projects are built with timer chips and transistors: 555 AM Transmitter Easy AM Transmitter! Would someone please explain the theory or science, and advantages or disadvantages of the components involved when building each project? Thank you very much.

Question by blkhawk    |  last reply


Christmas List!

'Tis the season to figure out what would make you happiest on the 25th of December this year! So, my question is, what is the one thing you want this year? :D

Topic by bumpus    |  last reply


Antenna length for a frequency modulated signal.

I  am given to understand that the length of an antenna is proportional to the wavelength of the signal that is fed to it (a quarter wavelength, for example). In the case of a signal modulated by amplitude, the frequency (and therefore wavelength) of the carrier wave remains unchanged. However, in the case of a signal modulated by frequency, the signal fed to the antenna will vary in frequency (and, therefore, wavelength). My query is this : how would one go about calculating the length of an antenna for a frequency modulated signal? Its frequency is not constant, so to construct an antenna of say, a quarter of the wavelength, would be impossible. I thank you in advance for your assistance. AlexHalford

Question by alexhalford    |  last reply


What frequency are aircrafts flying out of gatwick and could these listen to it ?

Http://cgi.ebay.co.uk/Omega-Multi-Band-Radio-Scanner-Icon-3-Air-Band-Marine-/120600101374?cmd=ViewItem&pt;=UK_ConsumerElectronics_SpecialistRadioEquipment_SM&hash;=item1c145381fe#ht_500wt_1154

Question by wizzywoo    |  last reply


Amplify FM transmitter range?

Http://www.lucidscience.com//projects/Basic%20Spy%20Transmitter/8.jpg  This all relates to the picture linked to above I was not sure if I could put an amplifier before the antenna to boost the signal going to the antenna extending the range anyone know for sure it seems to make sense 

Question by Algag    |  last reply


Useful Batch Commands

Hey guys, I wanted to post a quick forum topic about useful batch commands that are seldom used or not well-known, or maybe just useful tidbits. Note: These do not have to be used, they are just extremely helpful and are just "extra," meaning you could probably find easier-to-understand but not as useful commands. 1. The CHOICE command The reason this command is so cool is that unlike other Y/N menus, when you enter the desired number, you don't have to hit enter, it goes straight to the next screen. You can also program it to execute a command after a set amount of time. Here's how to write it out: choice /c:12345 /t:5,10 if errorlevel 5 goto ha if errorlevel 4 goto joke if errorlevel 3 goto tired if errorlevel 2 goto fried if errorlevel 1 goto chiken To time it, you type /t and then a colon. You write the choice that you want to be timed, e.g. 5, and the amount of time in seconds you want it to wait for seperated by a comma. 2. The Random Variable The reason I deceided to put this up is because it is one of the only if not the only variable that is already programmed into the system. By using it correctly, you can generate a number between 1 and 32767. WHAT?! Of course, you can narrow it down, to, say about 1 and 100. :dim set rnd=%random% if %rnd% GEQ 101 goto dim if %rnd% LEQ 0 goto dim set number=%rnd% So as you can see, %random% is a set variable and generates a random number for you. Please keep in mind that this can take one second, or one eternity (literally) since it doesn't narrow down the choices after finding that a number doesn;t work. So, you may keep on generating 101 forever and never get to 100! 3. The ^| Command. Ever get frustrated because you are making an animation with, for example, stick figures and are getting driven nuts because the minute it gets to a certain part, it exits on you? The reason is probably because you used the | symbol, which is actually knd of like a command by itself. So, if you're doing something like this: echo [0] echo /| echo / The reason it is not working is because you didin't use a ^ before the |. Here's what it should be: echo [0] echo /^| echo / Yes, it looks wierd in the editing stages, but looks much better in the real thing. Just remember, you will have to remember that the ^ will be invisible, so make sure everything else in front of it is like this: echo [0]   [ echo /^|    [ echo /     [ So that the [ or whatever it is is one space ahead from the others. 4. The %TIME:~0,5% Command. What time is it? Oh, it's 3:16:52.29! Ever been frustrated with the TIME command? For one, who ( and when I mean who, I mean the average batcher who doesn't use the TIME command to synchronize seven different computers around the house which I could never hope to do) needs to be that exact? When making a batch alarm clock, for example, the user wouldn't really want to do all of that, would they? So, for those of you who would want to make such a clock, here's an example: @echo off title Alarm Clock :start cls color f0 echo. echo Use 24 hour clock echo. set /p a=Set Alarm: cls echo. echo Alarm set to %a%. :alarm if %time:~0,5% EQU %a% goto alarmset goto alarm :alarmset color fc echo echo echo cls echo. echo It's %time:~0,5%! echo. echo Press 1 to acknowledge. choice /n /c:12 /t:2,1 if errorlevel 2 goto alarmset if errorlevel 1 goto sleep goto alarmset :sleep goto start So there's one example. %TIME:~0,5% sets the time from 3:15:00.00 to just 15:15. This doesn't work just with the TIME command, you can do this with any variable. If I had a variable %x% and it said "crayon" and wanted it to say "cray," I would type in %x:~0,-2%. If I wanted to make %x% say "on," I would type in %x:~-4,0%. 5. The AT Command The AT command is exactly what it appears to be. You tell it AT (time) /every:[day(s) of the week] (command to be executed). So, it I wanted an alarm to go off whenever the Simpsons are on, I'd type AT 19:30 /every:sumtwthfs echo ALARM!!! Now, I know that the Simpsons are on at a different time on Sundays, but that's not important. Please not that you HAVE to specify what day you want it to go off on (it can be dd/mm/yyyy to be really specific). Default is set to "tomorrow." This was probably too confusing. For one, I talk too much. Thank you for even getting this far, anyways. Thanks a bunch!

Topic by TheBatchies    |  last reply


How do I listen to past radio shows for free? Answered

I listen to coast to coast am and it on at ten where I live so I somtimes miss some good guests and I want to go back and listen during the day for free. I can do streamlink but I don't want to pay. Pleaz help. :-)

Question by miiwii3    |  last reply


How can I become popular online? Answered

It seems wherever I go, I can never get good publicity, even if I post good work. Some of my 'ibles are well written, yet have less views and what-not compared to some really cheap 'ibles. On Youtube, my Spinafire account doesn't have many views on the videos, and I have put a lot of work into them. How are people like Kipkay and Kiteman, or Plasmana popular? Is there some big picture that I am not seeing?

Question by Kaiven    |  last reply


why am i bord?

Why am i soooooooooo bord

Question by coco the cool    |  last reply


I am SO tired....

I am just SO tired of not being able to be who I am.  If I am kind to children, I become a molester, if I let my feelings go with free reign, am outlandish if I don't let my feelings out, I am unfeeling, if I speak the truth, I am a heratic if I hold on to fantasy, I am bonkers. If I talk about who I am, what I am, people don't want to hear it, and eventually deny it altogether; so I can NEVER be who I am around most people... (obviously "around" means in person). I can't win. Also,  Can ANYONE on line truly know me, in any real capacity ?   Can anyone have experienced the tremendous struggles I have with sensory overload?  Can any of you REALLY know how much I struggle day in and day out to not become cynical like the tv character HOUSE ?  I mean,  really ? 

Topic by Goodhart    |  last reply


I am new to this site

Any advice for maneuvering on this site is welcome.

Topic by Mky    |  last reply


I am a willing project

Hi am new to this site and was wondering if anyone could help me. For Halloween I am off to a gothic club and as I'll be doing a few things to help out its been requested that I go as a zombie. Is there anyone willing to use me as a model to test on?! Am also asking because I do no trust anyone I know to do a half decent job.

Topic by mistress_force_x    |  last reply