frequency

  1. T

    Halloween Candy, Frequency, Not Amount, Raises Cavity Risk

    Halloween can present a very scary time of year for any parent concerned about their child's oral health, since your kids will probably come home with that big haul of candy from trick or treating. But should you let them immediately gorge themselves on the candy and get it out of their system...
  2. M

    Frequency responses for a car audio system.?

    When talking about rear, front, tweeters and subwoofer speakers in a car audio system. What is the best frequency responses you should have in all of those types of speakers that the human ear car hear or feel?
  3. M

    a wave crest asses a boat every 4.0 seconds what is the frequency of the waves ?

    i have no idea :(
  4. D

    How does bluetooth frequency hopping work?

    Bluetooth uses a frequency of 2.402-2.48GHz and uses "spread-spectrum frequency hopping", which means it chooses 79 random frequencies out of that range and hops around to any one of them 1,600 times a second in order to avoid interference from other bluetooth signals in the area doing the same...
  5. S

    Can a ATT 3g phone work on T-mobiles 3g if one frequency matches?

    HP Ipaq Glisten is a world phone, it uses these Frequencies GSM 850 / 900 / 1800 / 1900 / UMTS(3g) 850 / 900 / 2100 I read that T-mobiles 3g Frequencies are 1700/2100 MHz Since the Ipaq Glisten matches one of the 3g frequencies of T-mobile, Will it work on T-mobiles 3g network if it is...
  6. S

    LG monitor , out of frequency problem, help?

    My monitor displays only 1 prompt "HF:27.8 kHz, VF: 62.0 Hz ; Operating frequency : HF: 30-54 kHz , VF:50-120 Hz" and nothing works on it, not even the menu button works......I am not even able to view BIOS.
  7. P

    Can I design a low pass filter using LM 339 N(Motorola IC) to pass frequency till...

    ...20 khz? Which value of Vcc should I use? I require to pass a square wave of amplitude (0 to5)V through it.I have used a capacitor of .022 uF and resistance of 360 ohms.If possible please provide me the ckt.Looking desperately for any help.Thanks....
  8. J

    how to make a cordless phone get more frequency?

    what can i connect to a cordless phone so it can get more frequency. also what is a tsbf in a cordless phone.
  9. C

    What if someone transmits on ATC frequency?

    Is it possible for a lay-person to transmit on ATC frequency (excluding pilots and ATC staff, I mean)? Worse still, what if he starts singing :-) Would the cops be able to locate his transmitter? And how? Thanks :-)
  10. S

    Can you get one of those high frequency ringtones on realtone jukebox?

    Does realtone jukebox have the high frequency ringtones that adults supposedly cant hear? i dont want a website to get them for free cuz i dont trust those things. (i dont trust the ones where you pay either). Do those ringtones actually work?? How do you get them on realtone? what do you...
  11. T

    Filter for high frequency whine.. what worked for you?

    I have seen the small inline filters for radio receiver heads... But what about filters for high wattage systems consisting of speaker amps, sub woofer amps et cetera? What worked for you? In other words.. when you hear stray audio like alternator whine coming through the speakers how did...
  12. J

    hi i have a Handheld Racing Scanner B-BC72XLT how do i set a new Frequency thanks?

    thanks
  13. L

    Describe frequency hopping as it applies to Bluetooth?

    Can someone describe frequency hopping as it applies to Bluetooth.
  14. L

    How to find the frequency of a chanel I want in sattelite?!?

    Hi,I live in Asia and in my country I can`t search this because all of the sites about sattelite is blocked! So I want help,I want to find the frequency of virgin,M6 music,Cnn chanels and some Italian,Spanish or French Chanels which is about musics and shows and u recommend,I want to know the...
  15. A

    Is the PDA Internet Cellphone's GSM frequency compatible with the Bell

    company's GSM frequency? I am buying a "PDA Internet Cellphone" from Chinavasion, and it says that the GSM frequency is 900 MHz + 1800 MHz. I have a phone plan with Bell, and my present phone is breaking, so I need a new one. I am reading on the GSM website that Bell uses a "3G 850/1900"...
  16. C

    Frequency Response (Hz) 0 - 0? what does it mean?

    bose headphones
  17. T

    How to hook up a 555 timer with low frequency?

    I have a 555 timer hooked up right now and am using a 10uF capacitor to get very low frequencies(0-50Hz) range. I am using this instead of a 1uF because i have only low value resistors. I ask, what components should i use if i want the low time much longer than the high time? Thanks.
  18. K

    What frequency will you hear after this ambulance passes you while...

    1270.539 Hz. f = f0 * c/(c+ve) = 1270.53903345725 Hz
  19. G

    What is the wavelength of a wave with a frequency of 0.4 kHz traveling at 16 m/s?

    ~HELP ME PLEASE!!! ~10 points if you answer!!!!! ~Jenny
  20. T

    How do I find the output frequency of a digital counter?

    Since you divide a) 1 MHz b) 0.4 MHz (400 kHz) c) 800 kHz
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