01 November 2013

HF One MKII - cheap mobile transceiver with SDR technology


HF One MKII is another big step towards a good and cheap HF QRP transceiver. Less than 8 months ago we saw the Xiegu X1M, a small 5W SSB/CW transceiver for HF that costs under US$ 300 and weights just 500grams, bringing serious competition to the Yaesu FT-817 for those QRP mountain hiking afficionados out there. This time, the chinese electronics industry brings us for about the same price - US$ 300 + shipping, a much more refined looking product based on SDR technology and with 10W power output.



Sure, the HF One MK II mostly looks like a mobile radio you would see in a taxi and not like true ham radio equipment, but this is just until you find out the best thing about it: because it's packing SDR technology it has I/Q outputs and the modest front panel can be replaced with a proper full-fledged software like PowerSDR, the moment you hook it up to a computer. Ta-daa, the meager black plastic box suddenly provides contest-class transceiver features.






And because we're in 2013, when you're in the field you can use your tablet or smartphone to access all those sweet SDR features. At least that's what the above pictures suggests, and if this turn out to be as good as it looks it makes me say "finally HAM radio is starting to catch up to technology: Icom, Yaesu and Kenwood go and learn from the chinese to make modern radio equipment". Sure, that's not very fair but this should've been a 2011 product from a market leader.

Edit: actually it's not their software pictured there, but the 3rd party CommCat for wich you will need a separate CAT to Bluetooth interface, so no bonus points for the chinese industry anymore.

It works from 30KHz to 30MHz and only supports CW and SSB as standalone but using the I/Q you could demodulate any signal you'd like; unfortunately there's no I/Q input, so it only works on recieve. The dimensions are normal for it's class: 160*126*45 mm (the Yaesu FT-817 is 165*135*38 and the Xiegu X1M is 155*97*40), but the manufacturer lists a weight of almost 1.2Kg for the whole thing (mic and cables included) due to a rugged cast aluminium case.


When you see the internals though, you will realise this isn't something completely new: it is actually a repacked Juma TRX2A made a few years ago by OH2NLT and OH7SV and initially sold for EUR 500 (wich is around US$ 680), sporting AD9851 direct digital synthesis (also used in the X1M), polyphase filtering and a PIC 30F5014 microcontroller. It works from 11 to 15V, takes 500mA on RX and 3A at the maximum 10W TX output, reciever sensitivity is -130dBm and the IMD3 dynamic range is claimed at an impressive over 100dB.



 It can record 120s of audio, can store 26 channels and has an integrated automatic keyer. Still waiting for input from actual users, but considering the original Juma was very praised this should be no less.

33 comments:

  1. What is source where to buy?
    Victor, UA1CEX.

    ReplyDelete
  2. Thanks for visiting my blog, Victor. You can find it here:

    http://www.aliexpress.com/item/HF-ONE-MKII-QRP-Transceiver-Kits/1379485704.html

    There is also a link in the beginning of the article.

    73, Razvan YO9IRF.

    ReplyDelete
  3. Hello Razvan, light weight is also very fine for taking the set with you on the plane. hi. 73, Bert

    ReplyDelete
  4. Razvan, thank you very much.
    Victor, 73/72 - UA1CEX.

    ReplyDelete
  5. Are the instructions for this radio in english. Thanks Leo

    ReplyDelete
  6. I alsked the seller and will get back to you. But you could probably use the manual from the Juma, just indentify the buttons and you're good to go.

    http://www.jumaradio.com/juma-trx2/

    ReplyDelete
  7. Thank you for that info

    - is it really a kit??

    - CE approved??

    - anybody bought one??

    Daniel, HB9DDS

    ReplyDelete
  8. The seller says he is working on the english manual at the moment, so it's not ready yet.

    It is a kit, you have to install the boards in the case and make the connections. They probably do this because they don't have the certifications (CE or others) and they're not allowed to sell it as a finished product in most countries. There are a few buyers listed on the website but no feedback from the yet.

    Razvan, YO9IRF

    ReplyDelete
  9. Should we try Razvan??

    Daniel, HB9DDS

    ReplyDelete
  10. The infos and @ answers are not optimal:

    "Do not worry. Without any problems. After about a month, we will provide a complete adjustment of a good product. Of course includes packaging and handheld MIC.thank you."

    I don't know ...............

    Daniel, HB9DDS

    ReplyDelete
  11. I'm hoping his english is not optimal and he means he will provide instructions on how to adjust, i.e. a manual of some sort. But we can't know yet.

    ReplyDelete
  12. I have received HF-ONE MKii today.
    It was completely assembled and no connections are necessary.
    And also no manual on package just MIC connection diagram only.

    ReplyDelete
  13. Great transceiver for the money!
    The TX is continous, or only inside the Ham bands?
    Thank you for the presentation of this radio.

    ReplyDelete
  14. Any (good) nws folks??????

    I just looking for the "order" button ..............and locking and locking and locking and ........

    ReplyDelete
    Replies
    1. Maybe it a good idea to make a Group of people interested for Chnese Transceivers. There are sooo many new , and unknown radio's coming out this last months and many doesnt even know their existence or how to buy them.

      Delete
    2. Hello John. What is your call sign??

      Daniel, HB9DDS

      Delete
  15. Multumesc de info; mi-ar surade unul, in special ptr modul SDR :)

    73 de yo2ldk

    ReplyDelete
  16. As vrea sa stiu daca a ajuns si in YO si care sint impresiile....la cald.

    ReplyDelete
  17. Salutari,

    din pacate nu cred ca a ajuns, oricum timpul de livrare e mare. Din ce am mai citit prin alte parti e posibil sa fie ceva probleme cu rejectia spuriilor, asa ca momentan mai asteptam pana se mai maturizeaza si apar mai multe impresii de la utilizatori.

    ReplyDelete
  18. I think this is a fake....

    Therefore I canceld my order because:

    1. I don't get any response of my Mail's!!!

    2. I read: Sorry, this item is no longer available!

    Daniel, HB9DDS

    ReplyDelete
    Replies
    1. Its a real pitty beacause there is a lot of potential from Asia.
      Look if you want at
      http://www.hellocq.net/forum/read.php?tid=320297&ds=1&page=9#4631772
      I am not sure, but I think is there a direct discussion with the company and is probably the best way to find something directly from the font. ( In cinese I think).

      Delete
    2. If I dont make (traduction ) mistakes the productor gives this Internet Shop for who is interested to buy.
      http://bg5uhu.taobao.com
      1388.00 Chinese Yuan = 166.88 Euro. NICE!!

      Delete
    3. Sorry again. I didnt saw it before.
      At http://bg5uhu.taobao.com
      there are four prices
      1388
      300
      and 1688 Chinese Yuan .
      The last one ( 203 Euro ) probably is for the Complete transceiver and the first and the second price for only some parts of the complete package..
      There is also the microphone at 150 Chinese Yuan

      Delete
  19. This comment has been removed by the author.

    ReplyDelete
  20. I send approx 30 mail to bd5tad@163.com and the order companys (Aliexpress) internal Mailsystem. NO answer since day or weeks!!!

    i think this is a fraud......

    Any suggestions????

    Daniel, HB9DDS

    ReplyDelete
    Replies
    1. Have you seen the online shop
      http://bg5uhu.taobao.com ?

      Delete
  21. Ηι.
    I dont think its a fraud but who knows!
    If you write a message at http://www.hellocq.net/forum/read.php?tid=320297&ds=1&page=9#4631772 site someone will help you for sure.
    At least they will know much better what is going on with the selling plans of this transceiver!
    Good luck.
    If you find an interesting information write it here.

    ReplyDelete
  22. I wrote several mails to bd5tad@163.com. As I say before. And you r link ist with translation to cpmplicated for register....

    Daniel, HB9DDS

    ReplyDelete
  23. Will this unit handle digital mode transmissions? The I/Q statements had me confused.

    Thanks

    ReplyDelete
  24. Hi its really very nice blog i enjoyed a lot to visit. 324g mobiles

    ReplyDelete