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USDX USDR+ 8 Band HF SDR Transceiver

Discussion in 'Amateur Radio News' started by M0DQW, Dec 9, 2021.

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  1. BH1SXJ

    BH1SXJ Ham Member QRZ Page

    There is a word in China called "a penny," is that the goods are basically equal to his price, we can't buy a GTR in 2000 or Euro.
     
  2. CA7OKD

    CA7OKD Ham Member QRZ Page

    Tesla does not exactly stand out for quality in construction ...; And don't you wonder that Apple has all its production in China?
    I have a Xiegu X5105 and a uSDR and they have given me good QSO's of up to 1,500 km.
     
    BH9BCK and KK1LL like this.
  3. W5QJ

    W5QJ Ham Member QRZ Page

    I received a model similar to the one reviewed as a Christmas present. It had a single mode switch and no plastic bumpers on the ends. The microphone included was marked "Motorola". Others have been very happy with this or similar iterations, but mine has already been sent back.

    The receiver was scratchy and full of "pops", the rotary encoder felt like turning a boat paddle in a bucket of rocks, it refused to speak to flrig, hamradio deluxe, omnirig, or dx commander, the sidetone volume was barely audible, and output was 5 watts and not the 10 as advertised. Also, modes were LSB, USB, and CW and nothing else. Several of the menu selections were absent, notably sidetone pitch and sidetone volume.

    I never bothered to check SSB operation.
     
  4. BH1SXJ

    BH1SXJ Ham Member QRZ Page

    If I can learn CW this year, I will choose 5105 or 6100, which has a power of 10 watts
     
  5. W2ACY

    W2ACY Ham Member QRZ Page

    Hi...I recently purchased the Chinese knock-off of the usDX rig which is sold on eBAY and shipped from the US called usDR+. I have read complaints about this little rig. I received mine in a few days and after playing with the settings for awhile I now have it working just great. Sensitive receiver and it now puts out about 7 watts on SSB. Out of the box the settings are incorrect. It does not come with a manual but I found a video on YOUTUBE of an operator in Europe that explained the correct settings and they work. This past Saturday I made contacts all over the U.S. from South Texas. A great little portable QRP rig for under $200. 73 from TX Rick W2ACY
     

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  6. BH1SXJ

    BH1SXJ Ham Member QRZ Page

    协谷6100在我目前的反应中不是很好。它的接收存在一些问题。该人可以听到其他人从 7050 和 7080 的呼叫,也可以听到两个人的谈话。这显然是不正常的。很多人认为它的频谱以外的功能可能比5105好
     
  7. KC8TRL

    KC8TRL Ham Member QRZ Page

    Does anyone have a PDF file owners manual for the USDX + Hf qrp radio I can get
     
  8. KG4ZQZ

    KG4ZQZ Ham Member QRZ Page

    this is an interesting question... first of all, buying and using one of these sub $150 rigs is an exercise in the management of low expectations... you won't get any documentation, you won't get pinouts, you may or may not get promised features...

    i bought primarily for the use of play and experimentation; mainly for listening on the bands, although using a vintage Miracle Whip i was able to communicate w/an op on the other side of the state from my patio out back..

    the best source of info is the source:

    https://github.com/threeme3/usdx

    pe1nnz was good enough to do summary writeups of what could be accomplished using basic designs...

    that said, features are enabled or disabled depending on who edits, compiles, and flashes your rig..

    it is a crapshoot... so buy with a guaranteed return if you are worried...

    my rig was touted as having ts480 CAT control... it doesn't
    the backlight on/off toggle function does not work
    rig came with r1.02v, not the lastest firmware

    however, power can be dialed down to QRPp levels, tweaked up to 10W on a number of bands, the CW decoder works very well, a simple 2n2222 circuit keys the rig via flrig or other logging software, a simple CW msg can be programmed, SWL listening is best OK using LSB even though AM mode is available, and there is PWR/SWR display output for help checking antenna resonance

    plus, if you drop the rig six feet off the back of your pickup's tailgate onto concrete you're only out a dinner date with the XYL

    again, i didn't expect much with mine, but was surprised at the possibilities... you can tweak receive and voice transit audio to some degree... other have opened up the rig and reprogrammed with newer firmware

    if only the clone makers were truthful and included documentation, these rigs would be even more popular.. i look at mine as an experimental toy that provides some utility... otherwise i much prefer my tx-500 for /p
     
    KL7KN likes this.
  9. KI5SMN

    KI5SMN Ham Member QRZ Page


    This radio was not designed in Japan, nor China, only manufactured there. It was designed and built first as a kit by Guido PENN1Z and later updated quite a bit with assistance from Manuel DL2MAN.

    It is an SDR radio, built around the ATmega284 (don't quote me on that designation, but it is a standard, every-day ordinary Arduino chip). The firmware is programmed in C using the arduino IDE.

    There is a lot of controversy around this radio, because the Chinese rightfully assumed that they might use the attribution only licensed design and build and sell the radio on the internet.

    This pissed off especially DL2MAN, who felt they were getting rich off his back (if you don't mean 'Open Source' don't license it 'Open Source').

    In any case, neither the radio nor the firmware belong to DL2MAN.

    Firmware version ~1.04 for this radio makes it a piece of junk. Using the instructions below, you can upgrade it to 4.0+ and seriously improve the performance of the device.

    Side note: The Chinese 'engineers' didn't snap to the fact that one of the filters can do double duty, so this is actually a 9 band radio.

    Upgrade your firmware with an arduino uno, these instructions: https://www.microcontrollertips.com/programming-avr-microcontrollers-arduinos-arduino-isp/ , and the WhiteButton.ino file from this github repository: https://github.com/GW8RDI/uSDXOpen

    Then you will find this is a quite capable ultralightweight QRP rig. It delivers, but you gotta be more than an operator of appliances get your money's worth from it.

    Don't be so quick to piss on what you don't know about and clearly don't understand.
     
  10. KI5SMN

    KI5SMN Ham Member QRZ Page


    I just ordered the updated (tr)uSDR from the links provided by DL2MAN on his web site. I bought from newdiytech.com, a Chinese company. As DL2MAN has been heard to say, you cant get parts anywhere but China and anyway, its about ethics not ethnicity.

    DL2MAN didn't create the radio. It is a project with a long and storied history, of which the Chinese are only a chapter.

    see https://github.com/GW8RDI/uSDXOpen for the synopsis.
     
  11. KI5SMN

    KI5SMN Ham Member QRZ Page


    I'd love to get the source of all the radios and parts you buy that *arent* made in China.
     
  12. WN1MB

    WN1MB Ham Member QRZ Page

    junk.jpg
     
    KL7KN likes this.
  13. WD4IGX

    WD4IGX Ham Member QRZ Page

    Huh? You do realize that I was saying the same thing, right? That it's almost impossible to buy something NOT made in China? I think you read me wrong.
     
  14. WD4IGX

    WD4IGX Ham Member QRZ Page

    I didn't. I think you didn't read my comment. I said it's almost impossible to buy something not made there.
     
    KO4CES likes this.
  15. KI5SMN

    KI5SMN Ham Member QRZ Page

    I suspect I must have. Please disregard.
     

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