Question about Shure (UA870-WB) Microphone

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Transform a UA70A TO UA870WB

I ahe a antenna ua870a therse 8 position a b c d e f g h what position to transforme the reception to ua870wb 400-900mhz
tnx

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  • FG1GW Apr 03, 2008

    On the printed circuit of the antenna there are 8 possibility, I am int?rr?s? mainly by the range of fr?qunece 662-698Mhz, L antenna 870a Shure is to position on (A) how to obtain the frequency band 662-698mhz, thank you.

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Sorry, it is not possible. The markers do NOT select the band. They are simply markers for manufacturing. The other IC amplifiers and filters on the board would need to be changed out to make it a wide band amplifier.

Posted on Jul 22, 2010

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Dear ,
go through this PDF, it will definatly help you .

http://www.atkcorp.com/pdfs/rfmic050.pdf

Cheerup and be happy always

Posted on Apr 03, 2008

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The difference between the two UHF amps is the frequency range for which they are designed. The ua870a was designed for a smaller frequency range mainly to prvide additiona coverage area for teh Shure UA series of wireless systems. The WB variant is designed to allow for use for Shure's entire UHF wireless line including: (UA,UB, J4,J5,L2,L3, H3,H4, and M4). It is not possible for the 870A to cover the full spectrum like the WB.

Dan

Posted on Apr 03, 2008

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The ua870a frequency range is between 782 810 Mhz, while ua870wb is between 470 and 900. Yuo must set both on a common value.

Here is the reference manual

Posted on Apr 03, 2008

  • Ginko
    Ginko Apr 03, 2008

    There seem to be a little confusion.The frequency band cannot be ' 662-698mhz' , that is a range. The frequency band is unique for each setting.

    For the rest you cannot "transforme ua870a the reception to ua870wb", as the ua870wb has a different range. UA870A range is much smaller than UA870WB
    All you can do is use UA870A within a range covered by UA870WB .




    UA870A . . . . . . . . . . . . . . . . . . . . . . . 782-810 MHz
    UA870WB . . . . . . . . . . . . . . . . . . . . . 470-900 MHz

    If you give me the whole description of the problem you having with your areal (eg, I want connect to this device , it does not work because of this and that), probably we can find a solution that makes som sense.
    As it is now your request sounds like: "how do I fit 10 gallons of water in a 5 gallons tank?"

    Regards

  • Ginko
    Ginko Apr 03, 2008

    To make it easier: you cannot get 662-698mhz on a UA870A because UA870A range starts from 782 mhz. How do you get a violin playing double bass notes?

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Try c-f

Posted on Apr 03, 2008

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