Page 6 of 13 FirstFirst ... 45678 ... LastLast
Results 51 to 60 of 130

Thread: 3 EASY ANTENNAS FOR BEGINNERS

  1. #51
    Purser
    Join Date
    Mar 2015
    Location
    Mojave Desert, USA
    Posts
    133
    I use the supplied Bieffe CO 100 AF coax for the FR24 box, and Belkin RG58 on an Airspy SDR for messing around on the lower bands. Have not been disappointed... I guess RG6 would work, IMO CO 100 or RG58 would be better.
    F-KDAG1

  2. #52
    Passenger dudesjp's Avatar
    Join Date
    Feb 2016
    Location
    SBCT
    Posts
    38
    Quote Originally Posted by Patrick Reeves View Post
    I use the supplied Bieffe CO 100 AF coax for the FR24 box, and Belkin RG58 on an Airspy SDR for messing around on the lower bands. Have not been disappointed... I guess RG6 would work, IMO CO 100 or RG58 would be better.
    Good to know! RG6 or RG59 are much worst than the RG58? Because the price diference here is huge! Like the RG6 or RG59 cost R$1,20/meter - about US$0.29/meter - and the RG58 are R$3,86/meter - about US$0.96 - plus the conector that are different, I'll spend much more, so, worth it? Thank you
    T-SBCT5/T-SBCT6

  3. #53
    First officer
    Join Date
    Feb 2014
    Location
    Aldershot, Hampshire. UK
    Posts
    262
    For the FR24 box I use the supplied coax (H-155 I think), for my PlanePlotter box and my OGN receiver I use 10 meters of LMR-400 with N connectors at the antenna end and short N to MCX pigtails to the dongles.
    FR24 F-EGLF1, Blitzortung station 878, OGN Aldersht2, PilotAware PWAldersht, PlanePlotter M7.

  4. #54
    Purser
    Join Date
    Mar 2015
    Location
    Mojave Desert, USA
    Posts
    133
    I don't mind spending a little more for higher quality low-loss cable runs. Others here may differ, but everyone has their own philosophy...
    F-KDAG1

  5. #55
    Passenger dudesjp's Avatar
    Join Date
    Feb 2016
    Location
    SBCT
    Posts
    38
    Quote Originally Posted by F-EGLF1 View Post
    For the FR24 box I use the supplied coax (H-155 I think), for my PlanePlotter box and my OGN receiver I use 10 meters of LMR-400 with N connectors at the antenna end and short N to MCX pigtails to the dongles.
    Found the LMR-400 by US$10,00/meter! OMG! This one is much much much much better?
    T-SBCT5/T-SBCT6

  6. #56
    First officer
    Join Date
    Feb 2014
    Location
    Aldershot, Hampshire. UK
    Posts
    262
    Quote Originally Posted by dudesjp View Post
    Found the LMR-400 by US$10,00/meter! OMG! This one is much much much much better?
    It is not the best, but in my view it offers a good performance at an acceptable price, particularly for the OGN receiver where you are dealing with signals very much weaker than ADSB, if you can keep the cable run short (1-2 meters or so) then the cable type becomes much less important, however for long runs cheaper cables can give large losses.
    FR24 F-EGLF1, Blitzortung station 878, OGN Aldersht2, PilotAware PWAldersht, PlanePlotter M7.

  7. #57
    Passenger dudesjp's Avatar
    Join Date
    Feb 2016
    Location
    SBCT
    Posts
    38
    Quote Originally Posted by F-EGLF1 View Post
    It is not the best, but in my view it offers a good performance at an acceptable price, particularly for the OGN receiver where you are dealing with signals very much weaker than ADSB, if you can keep the cable run short (1-2 meters or so) then the cable type becomes much less important, however for long runs cheaper cables can give large losses.
    My project need about 9/10 meters of cable between the antenna and the DVB-T stick! Better i put money in this cable or by another RPi and put in the attic with then 1 meter maximum of coaxial cable?
    T-SBCT5/T-SBCT6

  8. #58
    First officer
    Join Date
    Feb 2014
    Location
    Aldershot, Hampshire. UK
    Posts
    262
    Quote Originally Posted by dudesjp View Post
    My project need about 9/10 meters of cable between the antenna and the DVB-T stick! Better i put money in this cable or by another RPi and put in the attic with then 1 meter maximum of coaxial cable?
    Either use good cable OR put the Pi close OR fit an amplifier close to the antenna, once the signal is amplified then you can use almost any coax for the rest of the run as the amplifier will more than compensate for any cable losses, however it is best to go for a purpose built amplifier as the satellite ones are often of dubious quality and can be quite noisy, however you may be lucky, some people have had good results with them (I found that the one I tried was useless!).
    FR24 F-EGLF1, Blitzortung station 878, OGN Aldersht2, PilotAware PWAldersht, PlanePlotter M7.

  9. #59
    Passenger dudesjp's Avatar
    Join Date
    Feb 2016
    Location
    SBCT
    Posts
    38
    Quote Originally Posted by F-EGLF1 View Post
    Either use good cable OR put the Pi close OR fit an amplifier close to the antenna, once the signal is amplified then you can use almost any coax for the rest of the run as the amplifier will more than compensate for any cable losses, however it is best to go for a purpose built amplifier as the satellite ones are often of dubious quality and can be quite noisy, however you may be lucky, some people have had good results with them (I found that the one I tried was useless!).
    Yes, same here! If you look in the page 4 i put the photo of the one that i bought! But, he dind't work, without the amplifier my range are 115nm maximum, with go to 0! Don't know why! So i'm think in put the Pi in the attic and use a bigger RJ45 cable! Or find a good amplifier! Don't know what to do!
    T-SBCT5/T-SBCT6

  10. #60
    First officer
    Join Date
    Sep 2013
    Location
    Farnborough, UK
    Posts
    204
    check that your aerial is open circuit if your using an amplifier. Some contain a short (just down to the way they are made) and you need to put in dc blocker at the aerial.
    T-EGLF8

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •