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Thread: best antenna

  1. #1251
    Captain abcd567's Avatar
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    Has anyone tried this one (seems like R Pi) Canadian $ 86

    http://canada.newark.com/riotboard/m...riotboard-prod

  2. #1252
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    Quote Originally Posted by abcd567 View Post
    Has anyone tried this one (seems like R Pi) Canadian $ 86

    http://canada.newark.com/riotboard/m...riotboard-prod
    Seems quite pricy for a single core unit, you would do better with something like the Odroid U3 (quad core) or if price is a concern then one of the MK890 IV tv dongles, they run Android but can be re-flashed to linux and have far better performance than the Raspberry Pi.
    FR24 F-EGLF1, Blitzortung station 878, OGN Aldersht2, PilotAware PWAldersht, PlanePlotter M7.

  3. #1253
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    There is little point in buying anything better than a Pi for FR24. The Pi is sufficient, and appears to be about the cheapest board on the market. It might benefit in some places from having a few extras in some locations (chip coolers, waterproof boxes, etc) and for the whole reviver something to protect from static build up on the antenna.

    Having a faster board won't make your Radar code any more likely to appear on FR24.

  4. #1254
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    Quote Originally Posted by peterhr View Post
    There is little point in buying anything better than a Pi for FR24. The Pi is sufficient, and appears to be about the cheapest board on the market. It might benefit in some places from having a few extras in some locations (chip coolers, waterproof boxes, etc) and for the whole reviver something to protect from static build up on the antenna.

    Having a faster board won't make your Radar code any more likely to appear on FR24.
    No, but it will let you do things like running 2 or more dongles for other things such as ACARS or FLARM reception at the same time, If you just want to feed FR24 then a Pi will suffice in most areas, I don't know if it would cope well in this region as I quite often track 4000+ planes in a 24 hour period!
    Ben.
    FR24 F-EGLF1, Blitzortung station 878, OGN Aldersht2, PilotAware PWAldersht, PlanePlotter M7.

  5. #1255
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    Quote Originally Posted by F-EGLF1 View Post
    No, but it will let you do things like running 2 or more dongles for other things such as ACARS or FLARM reception at the same time, If you just want to feed FR24 then a Pi will suffice in most areas, I don't know if it would cope well in this region as I quite often track 4000+ planes in a 24 hour period!
    Ben.
    I only see 1500 planes a day on the Pi - I don't have the range of the F- box, and don't see the planes from the South and east going into the London Airports.

    But is I wanted to run ACARS and FLARM too, I'd probably run another Pi or two ... just to keep it simple.

    An Odroid U3 looks good value, but last time I looked once it was paid for with shipping and UK customs duties (based on cost the device, shipping, etc) added it was a $100+ USD purchase

  6. #1256
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    Quote Originally Posted by peterhr View Post
    I only see 1500 planes a day on the Pi - I don't have the range of the F- box, and don't see the planes from the South and east going into the London Airports.

    But is I wanted to run ACARS and FLARM too, I'd probably run another Pi or two ... just to keep it simple.

    An Odroid U3 looks good value, but last time I looked once it was paid for with shipping and UK customs duties (based on cost the device, shipping, etc) added it was a $100+ USD purchase
    Buy it from a more local supplier, such as :
    http://www.vesalia.de/
    They are in Germany and are quite reasonable on shipping, also NO duty as they are in the EU, there is also a UK supplier but I don't have his details to hand.
    Ben.
    FR24 F-EGLF1, Blitzortung station 878, OGN Aldersht2, PilotAware PWAldersht, PlanePlotter M7.

  7. #1257
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    This week I worked on one of my high sites again to do some maintenance on the 5.8gHz network, so I thought lets do a test for ADS-B reception there. Height above ground was a nice 65meters, so I connected my netbook and dongle and (previously tested) CoCo antenna. FAILURE!
    After some pondering and head-scratching, I realised I'm experiencing the result of being between 3 different cellular operators' antennas and the amount of "noise" they give off. Thus, as previously reported, a dongle without any signal/noise filter is really useless in that noisey environment.

    But looking up from below, you have to agree, it would have been a nice height to have a receiver at!
    IMG_20140626_164844_edit.jpg

    This coming week, I might install something to test at this site of mine .... just need to figure out what the exact height is here!
    IMG_20140627_152122.jpg

  8. #1258
    First officer 1090 MHz's Avatar
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    Remember the dongle is a broadband device, its tuner is actually receiving all of those cellphone channels too... and it's being saturated being so close to that soup of cellphone RF. It would be interesting to test a Mode-S Beast or a Radarcape in that environment. Both of those radios have 1090MHz saw filters in the front end to allow only the single frequency through. The FAA is installing its ADS-B receivers on-top of AT&T cellphone towers all across the USA.. so it can be done with the right equipment.

    Quote Originally Posted by HermanZA View Post
    This week I worked on one of my high sites again to do some maintenance on the 5.8gHz network, so I thought lets do a test for ADS-B reception there. Height above ground was a nice 65meters, so I connected my netbook and dongle and (previously tested) CoCo antenna. FAILURE!
    After some pondering and head-scratching, I realised I'm experiencing the result of being between 3 different cellular operators' antennas and the amount of "noise" they give off. Thus, as previously reported, a dongle without any signal/noise filter is really useless in that noisey environment.

    But looking up from below, you have to agree, it would have been a nice height to have a receiver at!
    IMG_20140626_164844_edit.jpg

    This coming week, I might install something to test at this site of mine .... just need to figure out what the exact height is here!
    IMG_20140627_152122.jpg

  9. #1259
    First officer 1090 MHz's Avatar
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    Super Antenna Update!

    Well its been about 2 weeks now of using the Super Antenna I built using LDF1-50 coax. Last Sunday my friend from Nav Canada came over with his VNA antenna tester. My antenna was resonant at +0.03MHz above 1090MHz and was also good at the DME frequencies. He congratulated me and said this antenna was within Nav Canada spec for ADS-B and DME use and he would certify it, if it was actually being used for real ATC.

    So this antenna is now being used for FR24.

    http://ads-b.ca/antenna-collinear-F-CYYZ2

  10. #1260
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    Quote Originally Posted by 1090 MHz View Post
    Well its been about 2 weeks now of using the Super Antenna I built using LDF1-50 coax. Last Sunday my friend from Nav Canada came over with his VNA antenna tester. My antenna was resonant at +0.03MHz above 1090MHz and was also good at the DME frequencies. He congratulated me and said this antenna was within Nav Canada spec for ADS-B and DME use and he would certify it, if it was actually being used for real ATC.

    So this antenna is now being used for FR24.

    http://ads-b.ca/antenna-collinear-F-CYYZ2
    Nice job

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