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A new QRP digital chirp mode for Ham Radio

Discussion in 'Amateur Radio News' started by DL4QB, Nov 21, 2024.

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  1. K1IO

    K1IO Ham Member QRZ Page

    There is no obligation to open source code. However, for United States hams, modulation must be documented, so that it is at least theoretically possible for an independent implementation to be done for monitoring purposes. From the US rules:
    97.309(a)(4). An amateur station transmitting a RTTY or data emission using a digital code specified in this paragraph may use any technique whose technical characteristics have been documented publicly, such as CLOVER, G-TOR, or PacTOR, for the purpose of facilitating communications.​

    So if you're keeping it a secret until patents are filed, then US hams aren't authorized to use it. You can document the modulation while keeping the source code and processing algorithms secret, though, and we'd be allowed to use it.
     
    TA2STO likes this.
  2. G1ZRN

    G1ZRN Ham Member QRZ Page

    Interesting.

    The lastest version now has the ability to select a number of transceivers and sound card.

    Working fine here, with my FTDX101D, so is there a of agreed frequencies yet to make a contact?
     
  3. TA2STO

    TA2STO Ham Member QRZ Page

    Thank you for the valuable information. This may well be the end of LongChat unless I disclose all the technical information about the mode.
     
  4. TA2STO

    TA2STO Ham Member QRZ Page

    Unfortunately not yet.
     
  5. WB9YZU

    WB9YZU Ham Member QRZ Page

    As another person posted earlier, in FLDIGI there is a RXID button in the upper righthand corner that IDs the most common modes, and will ask you if you want to change modes and QSY to that frequency.
     
  6. K2ENF

    K2ENF Premium Subscriber QRZ Page

    Yes, and no.

    Best explanation is asking a question: does our experimentation (note the emphasis) with data modes end with Joe Taylor?

    I'll more than grant that most of the new modes coming out today aren't really bringing anything to the party in terms of being able to get a signal through, reliability, data efficiency, etc. but I really don't mind that, for this reason: Until you throw something at the wall how do you know if it's going to stick?
     
  7. M5AKA

    M5AKA Ham Member QRZ Page

    For an example of the level of published technical information suggested for new Digital modes see what was released by the company that produced Pactor-4, see https://www.p4dragon.com/download/PACTOR-4 Protocol.pdf it didn't need to reveal any of their IP
     
    TA2STO likes this.
  8. K3XR

    K3XR Ham Member QRZ Page

    "A new QRP digital chirp mode for Ham Radio"
    What is the purpose of the "QRP" reference? Is there a reason the mode could not be used at any power level? Just curious.
     
  9. TA2STO

    TA2STO Ham Member QRZ Page

    It is to encourage people to use it at very low power levels. It can be used at high power too but just unnecessary.
     
  10. TA2STO

    TA2STO Ham Member QRZ Page

    Just found about Vara Hf for ham radio. It also has 2.4 Khz bandwidth with proprietary software. It seems to be approved by FCC. I think I can do same. I can give necessary technical information that FCC wants without disclosing my software code.
     
    DL4QB likes this.
  11. TA2STO

    TA2STO Ham Member QRZ Page

    Thank you. Very helpfull.
     
  12. K3XR

    K3XR Ham Member QRZ Page

    Thanks for your opinion.
     
  13. KM4SFF

    KM4SFF XML Subscriber QRZ Page

    Thank you for sharing! This looks very interesting. I can see some use cases this can be used.
    73,
    Sean
     
    DL4QB likes this.
  14. WQ1C

    WQ1C Ham Member QRZ Page

    Speaking of AMTOR, is there anyone that still plays with that mode?
     
  15. KL7KN

    KL7KN Ham Member QRZ Page

    I not heard the chirp/chirp of AMTOR for a very long time, but I mostly hang out on th CW parts of the bandds.
     
    KO6KL likes this.

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