AnyTone AT-D878UV In-Depth Review – DMR HT with APRS!

Discussion in 'Amateur Radio News' started by VA2PV, Jan 2, 2019.

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  1. K5JM

    K5JM Ham Member QRZ Page

    Another curiosity ...so if there is a lot of APRS traffic (I live in an urban area where hearing multiple packets in one minute is common )..that would affectively mean the other VFO would be incapable of receiving audio during the active high volume of packet traffic ?
     
  2. IW2BSF

    IW2BSF Ham Member QRZ Page

    hi, i read some collegue that have problem to fix the GPS signals , over 5 minutes etc.... possible this ?



    PROBLEM with the Roaming funcion... in all the world there are two DMR network the BM and the Plus ...

    the anytone scan only the frequencies, and with this problem of 2 network there is the problem that

    if i to do a qso on a TG in a network with the roaming is possbile that change in other repeater in other network TG... its NOT good this ! there is a solution for this ?

    73
     
  3. ND5Y

    ND5Y Ham Member QRZ Page

    I don't think that can happen if you program the radio correctly.
    I looked at the programming software and I think you have to make roaming groups. I think you have to put all the repeaters from the same system in one roaming group and other repeaters in other roaming groups. I could be wrong.
     
    IW2BSF likes this.
  4. N6NLX

    N6NLX Ham Member QRZ Page

    The Anytone radios don’t respond to polling. So, they won’t answer anybody. They only send out packets. It doesn’t receive and fwd. If you are using it in digital mode it appears to wait for quiet time before it sends out the packet. I have mine set for two minutes. It doesn’t appear to be a brute force method. That being said, I’m not sure how it does ranging.
    You can also set it up to send the data packets on digital or analog. I set mine up to send out data on 144.390 on anything not DMR. For DMR I set it up accordingly for the system I’m using. You can set it up to send packets on 144.390 while using DMR if you want to. If using a hotspot you need to make sure to enable passing APRS data. I don’t know how many hotspots do this. I’m running a ZumSpot with a Bluetooth board and there is a selection for this in the BluDV app. I believe there is a setting for this in Pi-Star as well. I have fire and law enforcement freqs in mine that are set as receive only. It still sends data even when I’m listening only. It’s pretty flexible.
    So, depending upon how you set it up, it may not effect your second
    VFO.


    Don.
     
    K5JM likes this.
  5. VA2PV

    VA2PV XML Subscriber QRZ Page

    If that's the case it's always possible to configure a tone in reception to avoid muting the other VFO. 73 Pascal VA2PV
     
  6. K5JM

    K5JM Ham Member QRZ Page

    Hi Pascal ..that’s an interesting option. Thanks for the idea.

    More specifically there is a local digipeater located on a very tall tower that has wide area coverage and relays packets (including weather stations )..so there is often a lot of activity being relayed on 144.390.

    To quickly recap (if I understand correctly )..You’re saying that in fact during that reception of packet info the other (non aprs) VFO would be incapable of also simultaneously listening to its assigned frequency because the VFO tuned to the Aprs frequency would capture the receiver first.

    But to combat that problem, a recieve tone could be set on the APRS assigned VFO..which would allow you to send packets..but would consequently ignore incoming packets.

    Thanks for helping me understand the issue!

    I have a Yaesu ft1xdr which has true dual recieve VFOs and is aprs capable..so it’s nice to compare the pros and cons objectively.

    73,
    Sam
    K5JM
     
  7. K5JM

    K5JM Ham Member QRZ Page

    Hi Don, thanks for the helpful info. I’ve posted another reply above.
     
  8. IW2BSF

    IW2BSF Ham Member QRZ Page

    hi .... NONE have problem to FIX the GPS (aprs) signal ???


    some collegue report that in the old 868 the fix is too fast, but in the new 878 is very long , some

    report to me over 10-15 minutes to fix a satellite outdoor .... NOT GOOD this !


    why this too long time to fix ? 73
     
  9. AA1PR

    AA1PR Ham Member QRZ Page

    I last heard the CPS was riddled with issues

    nice looking radio, but Im not dealing with half fast radio issues that a manufacturer couldnt address before releasing the product
     
    K5KNV likes this.
  10. IW2BSF

    IW2BSF Ham Member QRZ Page

    NONE ??? in how seconds or minutes your 878 fix the GPS sats ???
     

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