How to test jettison DVB-T dongle

[ramimz]

Use Flightaware Antenna, much better than above two:
(you may need a filter also, depending upon how close and strong mobile / cell towers are at your location)

[ATTACH=CONFIG]10876[/ATTACH]

too much for me at this time..... but many thanks.

[abcd567]

I have those 2 antennas.

[ATTACH=CONFIG]10873[/ATTACH]

[ATTACH=CONFIG]10874[/ATTACH]

now i'm using the GP spider.

Use Flightaware Antenna, much better than above two:
(you may need a filter also, depending upon how close and strong mobile / cell towers are at your location)

https://www.amazon.com/dp/B00WZL6WPO

FA-Antenna-and-Filter-b.jpg

[wiedehopf]

rtl-sdr.com has an official ebay shop.

This doesn't look to be it so it's a fake.

eBay/AliExpress: We also have an eBay and AliExpress store. Our eBay account name is "rtl-sdr-blog", and on AliExpress it is "RTLSDRBlog Store" NO:4523039. Please be careful of other accounts with low feedback selling our items below the market price as these are scammers, and be wary of counterfeit V3 dongles.

https://www.ebay.com/str/rtlsdrblog

If you want a dongle at a better price, try this store:

https://www.radarbox24.com/store

The green dongle from them has the filter in front of the LNA, so the design is more resistant to interference than the pro stick plus.
But it seems the reliability isn't as good.

Anyway they will provide a better product and service than the random ebay listing you are looking at.

[ramimz]

Worst scenario case, you have Paypal and eBay money back guarantee.

[Dutchyb]

If it is to good to believe it most probably is. Be careful

[ramimz]

What antenna are you using anyway, might well be that improving your antenna might be the better direction to go

I have those 2 antennas.

GroundPlaneADSBAntenna.jpg

PCBl1600.jpg

now i'm using the GP spider.

[ramimz]

I found one on ebay for $14.99

i hope it's the real one, and not a fake.

RTL-SDR Blog V3 RTL2832U 1PPM

[abcd567]

Flightaware Pro Stick (orange & blue) both have built-in LNA, but due to mobile/cell signals almost everywhere, requires external filter, another $21.

Rtl-sdr v3 does NOT have a built-in LNA nor have a built-in filter. You will need to spend another $30 to buy a LNA with built-in filter (due to mobile/cell signals).

Basically one needs Dongle + Amplifier (LNA) + Filter.
You can achieve this in different ways:
- All 3 independent units
- Dongle + LNA one unit, Filter separate
- Dongle separate, LNA + Filter one unit
- All 3 in one unit. Examples: Flightaware's ProStick Plus (blue), RadarBox24's FlightStick (green). However these units often need an additional external filter.

[Dutchyb]

I ordered the RTL-SFR dongle. Read some great reviews, after wiedehopf recommended this one. Till it arrives I am using the Jetvision dongle.

If you want a review and some graphs how theLNA perfumes that wiedehopf suggested;http://www.radioforeveryone.com/p/re...ed-preamp.html

[wiedehopf]

The ProStick can have problems with mobile phone or TV/radio transmission towers, but due to the integrated amplifier/filter it should be able to get you more range unless you are close to such a tower.

The rtl-sdr v3 is very nice with the metal housing while being hot to the touch actually keeps the internal temperature down.

If you ever want to go the extra mile, the v3 has an integrated bias-tee for powering an external LNA.
(https://www.rtl-sdr.com/new-product-...mhz-ads-b-lna/)


Anyway both have SMA connectors, make sure your existing antenna works with that.

What antenna are you using anyway, might well be that improving your antenna might be the better direction to go

[ramimz]

Wiedehopf & abcd567
Thank you so much for all the info.

I use a cheap SDR dongle ($8.50) to feed fr24 and other website.

i like to upgrade it..... i saw those two online.

RTL-SDR Blog brand R820T2 RTL2832U 1PPM TCXO SMA V3 Dongle, for $21.95
RTL-SDR Blog V3 R820T2 RTL2832U Dongle/

and

FlightAware Brand Prostick Plus ADS-B Specialty RTL-SDR, for $24.95
FlightAware Brand Prostick Plus/

it's only $3 different ......... which one do you recommend ?

[wiedehopf]

Wire should be sticking out around 65 mm. (Theoretically 69 mm but a little shorter usually works better)

Radials also 69 mm.

[Dutchyb]

Oh that looks great. Thanks

[abcd567]

You can always build yourself a spider directly on the dongle if you feel like it.

Spider-on-dongle:
Spider-on-dongle-20170812.png

[wiedehopf]

The difference in dongles shouldn't be too large, so i wouldn't bother.

You can always build yourself a spider directly on the dongle if you feel like it.