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FCC Information

It is the policy of Fmtron, that knowing and observing the lawful use of all kits is a first responsibility of our kit user/builders. We do not endorse any unlawful use of any of our kits, and we try to give you as much common sense help about normal and lawful use as we can.

FCC INFORMATION

For additional FCC information, go to  the FCC Home Page

 
 
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FAQ
  1. How can I install the FM Transmitter
  2. How far it works?
  3. How many kilometers will the 500mW transmitter transmit?
  4. How many kilometers will the 5W transmitter transmit?
  5. How many kilometers will the 15W transmitter transmit?
  6. Are the transmitters stereo and PLL?
  7. How to calculate the length and frenquency for fm gp antenna ?
  8. Would I require a cooling fan for continuous transmit?
  9. Could the power be increased with larger heat sink and cooling fan?
  10. Will Leaving My FM Transmitter On All Day & Night Harm It?
  11. Why Doesn't My FM Transmitter Turn On?
  12. Why Don't I Hear Anything?
  13. I Think All of the FM Frequencies Are Used In My Area?
  14. I Lost My AC Adapter Can I Use Some Other One?
  15. How long will I receive the transmitter after payment?
  16. Will you offer combined shipping?
  17. What's the warranty and policies?
  18. Do you ship any address?
  19. Can I cancel my order after payment?
  20. Why Professional Transmitters are not refundable?
  21. How to get 90 days warranty repair service?
  22. What type mic. can be worked on fm transmiiter?
  23. Does transmitter include operation manula and support software?

  1. How can I install the FM Transmitter

1. Install the antenna;
2. Link the cable to the antenna;
3. Link the 50 Ohm Coax cable to the "ANT"-(BNC Type)Be sure the link is stable;
4. Link the audio input to the "Audio"-3.5MM Stereo socket;
5. Link the DC POWER module to the "POWER"¨C6.5mm POWER socket ( DC 12V(current >2A) Pay Attention to the power polar : inside positive; outside negative);
6. After electrified, the frequency is the one of last power off;
7. Frequency Increase Control, pull the button "UP", every pull can increase 100KHz,pull the button for more than 1 second, the stepping jump to 1MHz;
8. Frequency Decrease Control, pull the button "DOWN", every pull can decrease 100KHz,pull the button for more than 1 second, the stepping jump to 1MHz.


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  1. How far it work?

Transmitting power, the use of the environment, Transmitting distance relationship.
(Reference)


Receive sensitivity 0.2uV/12dB

Transmit
power
0.1-0.5W

Transmit
power
1-2W

Transmit
power
3-5W

Transmit
power
10-30W

Transmit
power
30-50W

City

0.1-0.5Km

0.5-1Km

1-2Km

3-5Km

5-8Km

Town

0.2-0.6Km

1-2Km

2-3Km

5-8Km

8-10Km

Environs

0.3-1Km

2-3Km

3-5Km

8-15Km

10-30Km

Widen Plain

0.5-2Km

3-5Km

8-20Km

10-30Km

20-40Km

Sea communication

1-3Km

5-15Km

10-30Km

20-40Km

20-50Km



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  1. How many kilometers will the 500mW transmitter transmit?
    The 500mW transmitter can transmit 0.1->1 kilometers due to the area(city town or village is different) and the antenna you use!

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  2. How many kilometers will the 5W transmitter transmit?
    The 5W transmitter can transmit 1->5 kilometers due to the area(city town or village is different) and the antenna you use!

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  3. How many kilometers will the 15W transmitter transmit?
    The 15W transmitter can transmit 5->10 kilometers due to the area(city town or village is different) and the antenna you use!

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  4. Are the transmitters stereo and PLL?
    All the transmitters we sell are stereo and PLL!

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  5. Would I require a cooling fan for continuous transmit?
    OK, you can try it with a cooling fan.

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  6. Could the power be increased with larger heat sink and cooling fan?
    You can try it with high voltage(not more than 13.8V)

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  7. Will Leaving My FM Transmitter On All Day & Night Harm It?
    No, The FM Transmitter is designed to run non-stop 24 -7.

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  8. Why Doesn't My FM Transmitter Turn On?
    • Is the power cord firmly attached to the FM transmitter?
    • Is the AC adapter plugged into the wall?
    • Make sure the audio cable is firmly plugged into both devices.
    • make sure the volume is not all the way down.
    • Make sure your audio device is working.

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  9. Why Don't I Hear Anything?
    • Is the audio cable firmly attached to the  FM Transmitter  and your audio source?
    • Is the volume turned up on your audio source?
    • Is the volume turned up on your FM Receiver source?
    • Make sure the audio cable is firmly plugged into both devices.
    • Make sure your audio device is working.

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  10. I Think All Of The FM Frequencies Are Used In My Area?
    Some people report that all transmitter channels are being used. This is not possible since the FCC requires blank channels between commercial stations. What they are hearing is bleed-over noise from a commercial station. When you select one of these blank channels the FM transmitter will broadcast over the noise.

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  11. I Lost My AC Adapter Can I Use Some Other One?
    Yes, you can use the appropriate +12 V switching power supply. Must pay attention to the polarity of power.

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  12. How long will I receive the transmitter after payment?
    The transmitter's power below 50w will take 3 -5 business days, for the power above 50w and professional transmitters may be take a little longer around 7-12 working days.(Asia Tradition Holiday may be delay more days)

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  13. Will you offer combined shipping?
    Yes, we offer combined shipping, you can save shipping cost if you buy more transmitters!

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  14. What's the warranty and policies?


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  15. Do you ship any address?
    We only ship to Paypal confirmed address, your shipping address is match your credit card billing address.
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  16. Can I cancel my order after payment?
    You have a 24-hour waiting period after payment, see Terms & Policies.
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  17. Why Professional Transmitters are not refundable?
    Most professional transmitters are high power for professional applications and we have make a special order from our oversea factory, however we still accept return within 14 days after you signed the package, details please see our Terms & Policies.
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  18. How to get 90 days warranty repair service?
    You may contact us get a RMA and ship it back.
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  19. What type mic. can be worked on fm transmitter?
    You need find low impedance microphone. we do sell microphone for transmitter.
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  20. Does transmitter include operation manual and support software?
    Yes, most of home transmitter will be included operation manual or support softwae by download through our website.
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