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Is it possible to change the frequency range of an Azden 500UDR receiver and a 41BT transmitter to comply with new FCC regulations?

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According to the FCC website on wirelss mics no.

http://www.fcc.gov/cgb/wirelessmicrophones/manufacturers.html#Azden

Posted on Sep 25, 2010

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Display unit works on a 868.3MHz transmitter. Is it possible to convert the unit to receive info from a 433.9MHZ transmitter? Possibly altering the aerial length inside the display unit?


Not possible. The electronics are tuned to that frequency. The length of the antenna has no effect on changing the frequency of the receiver because it is tuned too.

Nov 15, 2015 | Measuring Tools & Sensors

2 Answers

Is there a way to change the frequency of a specific channel?


FRS & GMRS frequencies have been preset by the governing bodies where these radios are licensed for use. They consist of Ch 1 - 14 for FRS or Family Radios Service (the new "CB" radio) and Ch 15 - 22 for GMRS or General Mobile radio Service. GMRS frequencies may be repeated 5 Mhz higher - the repeater input of channel 22 (462.750 Mhz) may be heard if close to the transmitter on Ch 22, but if a repeater has been set up to repeat signals in range on Ch 22, they would also be heard on 467.750 Mhz. The repeater will likely have one or more of the following: a high vantage point such as a hill or mountain top, may increased output power of up to 50 watts, or have an antenna with gain properties. Any one or combination of any of these benefits, will result in a significantly increased area of coverage.

FRS Frequencies Channel Frequency in MHz 1 462.5625 2 462.5875 3 462.6125 4 462.6375 5 462.6625 6 462.6875 7 462.7125 8 467.5625 9 467.5875 10 467.6125 11 467.6375 12 467.6625 13 467.6875 14 467.7125 15 462.550 16 462.575 17 462.600 18 462.625 19 462.650 20* 462.675* 21 462.700 22 462.725

It is important to note that only Ch 1 - 14 may be used without a license. Transmitting on any of the GMRS frequencies (Ch 15 - 22) shown in red in the chart above, requires an FCC license if used in the U.S.A. Other countries may or may not have laws for licensing the use of any or all these frequencies, so check before transmitting. Modifying an FRS / GMRS radio is a violation of FCC rules and if caught; can result in fines, prison or both.

If you'd like to be able to tune actual frequencies - and not be limited to specific channels, you ought to look into amateur ("ham") radio. While not in the FRS or GMRS bands, there are literally hundreds of thousands of frequencies to use once licensed. The ARRL (American Radio Relay League) has a great deal of info about ham radio.

I hope this helps & good luck! Please rate my reply - thanks!

Feb 03, 2011 | Motorola TalkAbout T5530 2-Way Radio

1 Answer

I have a Motorola Axu4100 , I want to change the frequence that I currently have on this radio to a Motorola CP-200...just wondeing if these two radio can work together....


Hi
Motorola CP-200 have frequency range 
VHF: 136–162, 146–174MHz;
UHF: 403–440, 438–470, 465–495MHz depending on the model
Motorola AXU4100 have frequency range 435 - 480 Mhz
The first model has a wider frequency range so it is best to include transmitter Motorola Axu4100 to transfer and try to receive signal to Motorola CP-200

Sep 03, 2010 | Motorola AXU4100 (10 Channels) 2-Way Radio

1 Answer

Short static burst


I don't know a whole lot about microphones, but if it's wireless, then it has to accept interference according to the FCC. Wireless microphones normally connect using RF transmitters/receivers which can normally be tuned to specific short-range broadcast frequencies, which can be interfered with by passing waves of other frequencies. Even if the broadcasted radio waves aren't the same frequency, or within the same bandwidth, the harmonic distortion radiates at multiples of the fundamental (broadcasted) frequency.
If you can, try changing channels and see if that clears things up. If not, then perhaps contacting the manufacture can help.

Jun 03, 2010 | Sennheiser (EW165G2A) Professional...

1 Answer

How to make Shure wireless mic work with Azden 305


Sorry, that is not possible. Different manufacturers use different companding, noise reduction, and squelch schemes. Thus, even if they are on the same frequency, you might not get any audio or the audio might sound quite funny.

May 06, 2010 | Shure ULX1 Body-Pack Transmitter...

1 Answer

Our identical twins got identical Vengeance radio controlled cars from Blue Hat Toy Company. The problem, they're on the same frequency and there are no more in town to trade one out. Can the frequency...


Because of regulations set by the authority in your (any) country which controls the radio spectrum usage, toys in particular are only allowed to operate on certain frequency bands and the transmitter must be controlled by signal sources (oscillators) that are 'crystal' controlled (quartz). These maintain a very stable signal at a specific frequency just like a 'quartz watch.' The receivers need not be that stable so the controlled toy has a simpler circuit that can be tuned but this isn't useful in your case since that would only result in reducing the sensitivity (range) unless the transmitter crystal was changed.
I'm sure the manufacturer has anticipated the possibility that two or more of these toys might be operated in close proximity and probably has multiple models with different crystals available but unless you can contact them, this won't do you much good as you would likely have to return the toy to have it changed.

Jan 02, 2010 | Blue Rhino 2350 Heater

2 Answers

Hi ihave brought helicopter ftw 730 but the remote control was not its own .the helicopter ftw 730 remote control frequency is 40 mhz but the one i have is 27 mhz so how can i make as 40 mhz remote...


Unfortunately you can't. You will need to change the receiver or the transmitter so they are both the same frequency range eg 40mhz or 27mhz. Then you will need to check the crystal is the same frequency for the Transmitter and receiver eg 40.25mhz. NB. you can't put a 27mhz crystal into a 40mhz set or vise versa it won't work.

Aug 21, 2009 | RC Remote Control Rc Mini Helicopter

3 Answers

How to tell frequency on FRS-70


Channel A is FRS channel 8, at 467.5625MHz.
Channel B is FRS channel 13, at 467.6875MHz.

If you ever have another question like this one, search by FCC ID # at http://www.fcc.gov/oet/ea/fccid/Welcome.html .

Regards!

Apr 03, 2009 | Cobra FRS 70 (2 Channels) 2-Way Radio

2 Answers

Doorbell frequencies.


Check the reciever (ringer) as well, it will have to be set to match what you do to the transmitter (the doorbell button)

Jan 12, 2008 | Computers & Internet

2 Answers

Akg sr 60


help me please akg sr60 , when torn on just mute

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