Recent content by PeterPlane

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    ADS-B DIY Antenna

    That Franklin sure looks nice
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    ADS-B DIY Antenna

    No amp - I don't have one currently. I intend to try it on a tin-can before I give up on it completely.
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    ADS-B DIY Antenna

    Bought one of these antennas: http://www.ebay.com/itm/BRAND-NEW-Aircraft-Transponder-DME-ADS-B-Post-Antenna-/140958325304 and installed it using a metal chassis from an old DVD player and the results were.....DISAPPOINTING. My home made ground plane (spider) antenna works much much better.
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    ADS-B DIY Antenna

    How many weeks did it take for the antenna to arrive? I have one on order too.
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    ADS-B DIY Antenna

    The original dump1090 was setup to be its own web server, so you would connect to it on port 8080. Dump1090-mutability is setup to NOT be a web server, and delegates that task to lighttpd. The default setup is to run lighttpd on port 80.
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    ADS-B DIY Antenna

    I think I may have found the perfect way to keep RF out of my RTL dongle: http://www.ebay.com/itm/Lindgren-RF-Enclosure-Faraday-Cage-Screen-Room-Solid-Copper-110x70x90-chamber-/281185438966?pt=LH_DefaultDomain_0&hash=item4177f54cf6
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    ADS-B DIY Antenna

    That means dump1090 is already running. You have to stop the current one before you start another one.
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    ADS-B DIY Antenna

    If you look at the graphs (and translate the German) it doesn't work very well as a bandpass filter. I added one of these (bought used off ebay) to my setup and it made a huge difference: http://www.minicircuits.com/pdfs/NHP-1000+.pdf same thing in SMA size...
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    ADS-B DIY Antenna

    Each stub will block a single frequency, not a range of frequencies and not a band.
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    ADS-B DIY Antenna

    You're attempting to make a notch filter, not a bandpass filter. The signal you are filtering is already on the wire, captured by the main antenna. The stub is not an antenna. So I would measure from the T-intersection to the end. You are trying to make a device where a signal and it's...
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    ADS-B DIY Antenna

    Using the BNC connector as a reference, the antenna looks too short for 1090Mhz. But this exact antenna is widely sold for aircraft transponders so it must be correct. Here's more information about the antenna: http://www.chiefaircraft.com/ted-104-12.html...
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    ADS-B DIY Antenna

    There are two things you need to worry about while using the long USB: 1. Voltage drop. Make sure you have a really good USB supply feeding it. 2. RF - the long USB cable acts like an antenna. Put some ferrites right next to the receiver on the USB cable.
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    ADS-B DIY Antenna

    This is what the seller sent me in an email: "Hi, It is colinear 4 elements , PCB build, DC grounded antenna. The material is FR4. Regards"
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    ADS-B DIY Antenna

    The seller assured me that they are made of FR4 (circuit boards). I guess we'll see. I don't really care what's inside, I want to see what it does to my numbers...
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    ADS-B DIY Antenna

    I've got this antenna on order from Bulgaria: http://www.ebay.com/itm/ADS-B-omni-antenna-1090-MHz-PROMO-PRICE-6-dBi-for-SBS-Radarbox-micro-ADSB-RTL-/191506633936 Edit: This would have been my first choice, but it's 3 times as much: http://www.dpdproductions.com/page_vhf_air.html#adsbout I'll...
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