Alinco DX-SR9 Hybrid SDR Transceiver Review

Amateur Radio Projects and Software Defined Radio

Alinco DX-SR9 Hybrid SDR Transceiver Review

Conclusions

First of all remember that the Alinco DX-SR9 is a budget transceiver with SDR capability. It doesn’t have all the bells and whistles of it’s more expensive competition. However the DX-SR9 appears to be a very decent rig all on it’s own. SDR capability and SDR Software allows the DX-SR9 to come closer in performance to it’s more expensive competition costing up 2 to 3 times as much. The KGTRX software is a pretty good program to use with the DX-SR9 out of the box and seems to be pretty reliable. So, at the end of the day the DX-SR9 is an excellent little rig for hams that would like to experiment with SDR at a low cost. It’s a very easy rig to use when combined with the KGTRX. Even though a few small issues were mentioned, they are by no means  show stoppers at this price level. They may be possibly improved with future firmware updates since the DX-SR9 is a relatively new rig in Alinco’s lineup. The DX-SR9 represents an excellent value as a 100 Watt SDR capable transceiver. Frankly at the ~$750 street price point it has no real competition in the 100 watt category. Maybe this will encourage some of the other manufacturers to get with the program and start adding SDR capability to their rigs instead of just a remix of the same old technology.

DX-SR9 OmniRig .INI File

This is the Beta OmniRig .ini file. The .ini file only supports a small subset of the DX-SR9 command structure. The supported features are read / write the VFO frequency, read / write the Mode, toggle TRX and toggle RCV. This is usually what most external OmniRig comaptible programs use. However, other commands can be added that are supported by the DX-SR9 and can be added if needed by editing the .ini file. To use, download the DX-SR9_Beta.ini file below and then download OmniRig. Install OmniRig and then place the .ini file in the Rigs folder in the OmniRig directory. Open OmniRig and select the DX-SR9_Beta file for Rig1. Set the port to your ERW-7’s serial port number. The communications settings should be 9600,N,1. You might want to try setting the Polling Time to 100 and the Timeout to 100 to start with. Some programs may briefly flash “rig not active” on a regular basis, but this is usually not a problem. The download of the Beta OmniRig .ini file can be found in the HRS Alinco forum at the link below. Please post any questions or issues to the forum.

Beta OmniRig .ini file download

 

 

22 Responses

  1. AE5YJ says:

    Great review! Thanks for going so in-depth with this rig. 73

  2. George says:

    Excellent review! Nice to see a semi-major manufacturer embracing the improvements SDR offers and including it in their rigs.

  3. DL8YJ says:

    Thanks a lot for the review and the Omnirig.ini. It works well with SDR-Radio.
    Is there any (more or less official) list of the Alinco commands?

    73, Uwe

    • HRS Staff says:

      Check the Alinco Forum on this site. There is a list of DX-SR8 commands that seem to be pretty much compatible with the DX-SR9

  4. N4OZ says:

    If only it included 6 meters this would be a slam dunk. I think the KX3 still has the edge, even at 90 watts less power.

  5. AE5YJ says:

    Just curious which brands of usb adapters worked and which didn’t. I just ordered a sabrent 7.1 usb card with line in, stereo mic input, etc..

    • HRS Staff says:

      Actually one of the problem devices was the Sabrient SND8. The inputs were reversed. Even though they could be switched in the software for it, the setting wouldn’t always work correctly. The easy work around was to just swap the input cables around. The best performer by far was the Soundblaster SBX external box.

      • AE5YJ says:

        Thanks for the heads up, I will keep that in mind when it comes in. I just got it because it was economical and I am impatient, lol. I will also check on the soundblaster box, I noticed in the videos of the Tokyo Ham Fair that they were running the soundblaster unit.

  6. AE5YJ says:

    When you say swap the cables around, do you mean use a stereo to mono splitter and use the stereo mic input?

    • HRS Staff says:

      It would just me a matter of connecting the Left output to the Right input and the Right output to the Left input by using an adapter or by rewiring a 3.55 stereo cable so the inputs would be reversed.

  7. AE5YJ says:

    Sorry to keep making requests, but could you possibly post a youtube video of the SDR in action in a real receive/transmit environment? Counting down the days until my soundcard gets here lol

  8. AE5YJ says:

    I replaced my first faulty ERW-7 cable and now I have everything working in SDR mode thanks to the information here on this review and in the comments. I run SDR exclusively with this rig, and it works ok. Interesting note is that the I/Q imbalance is symmetrical in my unit, gain dropoff is severe and noticeable at both ends of the panadapter/waterfall. Annoying, yes but much easier to live with when symmetrical. Here is a YT video of the SDR in action:

    http://youtu.be/uaHAQCEwQck

    73 de AE5YJ

  9. kostas says:

    hello, I have not found the settings transmit filter

  10. Michael Mc Donald says:

    Hi there just set my dx-dr9e radio up with the erw-7 cable along with two 3.5mm audio cable one into line in and one into speaker output.Is there a certain mic I require for use on my pc ? 3.5mm into mic juck or would a usb version work I have tried a basic electric mic but when I key I get a high pitched squeal I then get a notification up on screen saying out of range using a cheap electret mic pluged into my mic jack on pc.Also is there another similar software which will work with the alnico? apart from kgtrx ? thx

  11. Michael Mc Donald says:

    Quick update radio with kgtx working well apart from the tx side when I click on tx I get a nasty squeal and a message saying out of range

    • Dub Campbell says:

      From what I understand the mic jack requires a mono plug and a dynamic mic. An electret mic cannot be used as a direct substitute for a dynamic mic without making some wiring or circuitry changes. The electret mic uses phantom power like a condenser mic and if you plug it into a jack that’s intended for a dynamic mic you’ll have a squealing problem or worse.
      Just plug in a simple, unbalanced dynamic mic and you should be good to go. That is, unless the voltage from the electret mic has caused some damage…but I think damage is unlikely with a low voltage electret. Good luck!
      Dub, k4dub

  12. Urmas says:

    How on earth you program memory channels? If you do what manual says it seems that frequency doesn’t save. Really seem to be overly complicated.

    Mainly now we talk cb-frequencies(receive/transmit same frequency)Mars-mod done to unit.

  13. Mentioned soon after introduction of the DX-SR9T Transceiver was the availability of an optional plug-in “filter board” (Part# EJ-59U) that is still available from ALINCO/REMTRONIX–but has not been mentioned in “factory literature” for well over the last year (2015 & 16). This “filter board” allows the substitution of up to three Eight-Pole COLLINS Mechanical Filters in place of the “stock” Four-Pole MURATA Ceramic Filters. Though not bad to begin with–the improvement in Selectivity is remarkable!! Refer to KZ4B’s comments regarding the DX-SR9T under EHAM.net for much more detail regarding this valuable option.

  14. Chris says:

    Hi. Where can I find now file: DX-SR9_Beta.ini?
    I need this emergency. May be somebody have it?

  15. DF1FN says:

    What a great review, actually it made me purchasing the transceiver. And what can I say? I’m very impressed, what Alinco offers with the DX-SR9, especially considering the relatively low price compared to other TRXs that dont’t offer as many functions, for example FM and the SDR option.

    What I like about the Alinco is the clear and simple design.
    I even don’t mind the three solid power output levels. Where’s the problem? You get a high, low and super-low setting with the possibility to fine-adjust everything on the circuit-board or to limit the high setting to 50 W by soldering a jumper. Working digital modes I set to the “high” level and adjust the output power with the sound level of the PC.

    Ok, what annoys me a bit are the many multifunction buttons at the front, but tell me a similar device that doesn’t have them.

    The KG-TRX software works relatively well but I had to update the TRX to a newer or special firmware to make it work correctly. Otherwise there always was a offset in the waterfall when I changed between LSB/USB/CW mode. I reported to the Alinco online customer service which could help me immediately.

    The Software itself is very basic and clear, what I like very much, because with more options it would tend to be overloaded I guess. Everything works including TX and CW TX.
    The 48 khz is wide enough for me. Ok, there is this signal ghosting but it can be reduced by a high quality soundcard.

    Would I recommend the Alinco? Yes!

    vy 73 DF1FN

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