FAQ Need schematics for x-108G

Discussion in 'Old-Posts' started by fstkmaro, Mar 25, 2016.

  1. fstkmaro
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    fstkmaro Beginner X-108 Member

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    Hello, I am happy to have found this forum. I just recently purchased a 108 indoor version. It seems to me that this is a typical 32bit processor based radio, probably a STM32 type of processor. I was wondering if there were any schematics published for this radio. The reason I want to find out is to explore the possibility to replace the stock display or find a way to enhance its brightness. It is very dim as it is and can benefit from a little more light on it.
    I find the radio performs a bit well however I noticed some type of RF or TX feedback on the radio. I read about poor internal grounding which I will check to see if it could be corrected.
    I own several other radios such as the 817ND, LD-5 and ELAD FDM-DUO, I purchased this one more as a rugged alternative to the other radios I own. The receive appears to be fine with this radio.
    Anyways, thanks for letting me in and I will appreciate any help in finding the schematics for it.

    73
     
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  2. DO7PSL
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    DO7PSL Crack-Boarder Staff Member X-108 Member Moderator

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    hi fstkmaro,

    thx for your first post.

    I unfortunately have not found any schematics either, not even from the xiegu-support. sorry i was not able to help you at the moment. if i cross by with an appropriate schematics i will post it here under the resource-node. please check the forum from time to time
     
  3. SP2ONG
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    SP2ONG Beginner X-108 Member

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    I have found digram of X108G. You can find in attachents

    73 Waldek
     

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  4. fstkmaro
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    fstkmaro Beginner X-108 Member

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    Thank you DO7PSL and SP2ONG for the help on this. I will review the files, there could be a chance to add an external display. 73 de WA1JIM
     
  5. eysum
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    eysum Beginner X-108 Member

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    This schematic is very useful but it appears to be not 100% complete. I own a dead X-108G which I am troubleshooting. The schematic for local oscillator for the receiver and transmitter mixer and BFO oscillator is missing. There is a tiny plug-in board (which contains the all the oscillators and associated on-board voltage regulators) attached to the small signal board. On my X-108G the oscillators are not functioning.

    Perhaps a more complete schematic will show up.
     
  6. Narendra
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    Narendra Beginner X-108 Member

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    This schematic is block diagram, not detailed, found in service manual
     

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