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 Post subject: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 10:41 am 
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dbaker - FlightAware user avatar

Joined: Mon Jul 25, 2005 12:00 am
Posts: 2838
Location: FlightAware WHQ
Hi everyone,

We're now making our custom antenna (that ships with FlightFeeders) available for sale. It is an indoor/outdoor antenna with an N-type connector and mounting bracket. We're making it available at-cost, currently only via amazon, to help the community with better coverage. The price is $44.95, which is way cheaper than the previous indoor/outdoor antenna we sold and by far the least expensive antenna on the market in this class:

http://www.amazon.com/dp/B00WZL6WPO?tag=fligh01-20

Any feedback or links to related accessories (e.g., adapters, connectors, cables, etc) would be appreciated so we can link to those as well. Later this month, we'll be offering a 1090MHz pass-band filter for sale at-cost as well.

Daniel


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 11:40 am 
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elpipila - FlightAware user avatar

Joined: Thu May 22, 2014 2:48 pm
Posts: 196
I used these items to convert the Flight Feeder antenna from N to F for RG6 cabling, add amplification, power insertion, and a pigtail to convert from F back to SMA (Pigtail gets rid of the stiff RG6 cable connection at receiver).

N to F

http://www.amazon.com/gp/product/B00G4B ... ge_o09_s00

amplifier
http://www.amazon.com/gp/product/B000X2 ... ge_o05_s00

power injector

http://www.amazon.com/gp/product/B003C2 ... ge_o02_s00
Pigtail F to SMA
http://www.amazon.com/gp/product/B00CQ3 ... ge_o08_s00


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 1:04 pm 
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Kabuse - FlightAware user avatar

Joined: Wed Apr 08, 2015 1:21 am
Posts: 81
So, I guess impedance of the antenna and the filter will be 50 Ohm, right?

What type of connectors will the filter have? SMA?

If you mix it with RG6 cable/sat power inserter/sat amplifier, you will have quite a few 50/75 Ohm transitions, even worse, if you use 50 Ohm cable.

If you use no amp, 50 Ohm cable and an RTL SDR, you will only have one transition at the dongle.

Will it also be availabe through an european Amazon subsidiary?

Regards,

Kabuse


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 1:14 pm 
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tjowen - FlightAware user avatar

Joined: Mon Mar 09, 2015 11:17 am
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I tried to add it to my cart on Amazon.com, but was told that the item, as posted, cannot be shipped to Canada. And the item cannot be found on Amazon.ca
..Tom


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 4:42 pm 
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david.baker - FlightAware user avatar

Joined: Thu Jan 23, 2014 12:34 pm
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As Kabuse was saying, you want to minimize the number of switches between 75 ohms and 50 ohms since there is a loss every time you switch. The losses are around 0.2dB per mismatch and can add up quickly if you get the wrong parts and switch the impedance more than necessary.

The Antenna has a N female connector.
The 1090MHz band pass filter is rated at 50 ohms and has sma male one side with a sma female the other side.

For cabling you can choose from:
RG-6 and RG-11 has 75 ohms impedance.
LMR-240 and LMR-400 has 50 ohms impedance.

>If you use no amp, 50 Ohm cable and an RTL SDR, you will only have one transition at the dongle.

We have tested the RTL dongle with this exact setup. Using the FlightAware antenna with a 50 ohms cable (like an LMR-240 rating) directly into an RTL dongle will get about 160-200NM max range. There is a variation in antenna and cables but you can expect over a 2 times range improvement over the stock antenna.

>I used these items to convert the Flight Feeder antenna from N to F for RG6 cabling, add amplification, power insertion, and a pigtail to convert from F back to SMA (Pigtail gets rid of the stiff RG6 cable connection at receiver).

Yes. This would work well as long as you are staying in 75ohms for everything.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 7:10 pm 
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k6rtm - FlightAware user avatar

Joined: Tue Nov 18, 2014 10:18 pm
Posts: 420
Location: Silicon Valley
david.baker wrote:
The 1090MHz band pass filter is rated at 50 ohms and has sma male one side with a sma female the other side.

Any more info on the band pass filter? SAW or LC? Insertion loss? Response curve?
Glad to see you doing this!

bob k6rtm


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 7:33 pm 
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vicbeo - FlightAware user avatar

Joined: Tue Apr 14, 2015 8:08 pm
Posts: 6
Location: Santiago, Chile
Thanks ! ... I bought one antenna


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 7:48 pm 
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tjowen - FlightAware user avatar

Joined: Mon Mar 09, 2015 11:17 am
Posts: 378
tjowen wrote:
I tried to add it to my cart on Amazon.com, but was told that the item, as posted, cannot be shipped to Canada. And the item cannot be found on Amazon.ca
..Tom


Any help? This is what I get from Amazon...

Can't Ship to This Address

This may be because:

The following types of items can’t be shipped to buyers outside the U.S.: video games, toy and baby items, electronics, cameras and photo items, tools and hardware, kitchenware and housewares, sporting goods and outdoor equipment, software, and computers.
Amazon may be restricted from shipping to your country or location due to manufacturer restrictions or warranty issues.
There may be item-specific shipping restrictions, for example hazardous-materials restrictions. See the product detail page for information.
You may have chosen an offer from a seller who doesn’t offer international shipping. Try looking for another seller.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 02, 2015 9:44 pm 
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digiblur - FlightAware user avatar

Joined: Mon Feb 24, 2014 10:24 pm
Posts: 49
dbaker wrote:
Hi everyone,

We're now making our custom antenna (that ships with FlightFeeders) available for sale. It is an indoor/outdoor antenna with an N-type connector and mounting bracket. We're making it available at-cost, currently only via amazon, to help the community with better coverage. The price is $44.95, which is way cheaper than the previous indoor/outdoor antenna we sold and by far the least expensive antenna on the market in this class:

http://www.amazon.com/dp/B00WZL6WPO?tag=fligh01-20

Any feedback or links to related accessories (e.g., adapters, connectors, cables, etc) would be appreciated so we can link to those as well. Later this month, we'll be offering a 1090MHz pass-band filter for sale at-cost as well.

Daniel

Very nice and prime as well! So tempting.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:23 am 
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tjowen - FlightAware user avatar

Joined: Mon Mar 09, 2015 11:17 am
Posts: 378
tjowen wrote:
tjowen wrote:
I tried to add it to my cart on Amazon.com, but was told that the item, as posted, cannot be shipped to Canada. And the item cannot be found on Amazon.ca
..Tom


Any help? This is what I get from Amazon...

Can't Ship to This Address

This may be because:

The following types of items can’t be shipped to buyers outside the U.S.: video games, toy and baby items, electronics, cameras and photo items, tools and hardware, kitchenware and housewares, sporting goods and outdoor equipment, software, and computers.
Amazon may be restricted from shipping to your country or location due to manufacturer restrictions or warranty issues.
There may be item-specific shipping restrictions, for example hazardous-materials restrictions. See the product detail page for information.
You may have chosen an offer from a seller who doesn’t offer international shipping. Try looking for another seller.


Any help FA?
..Tom


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:27 am 
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FlightAware Staff
dbaker - FlightAware user avatar

Joined: Mon Jul 25, 2005 12:00 am
Posts: 2838
Location: FlightAware WHQ
We need to find some international distributors; Amazon is not the best at that.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:29 am 
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tjowen - FlightAware user avatar

Joined: Mon Mar 09, 2015 11:17 am
Posts: 378
dbaker wrote:
We need to find some international distributors; Amazon is not the best at that.


Can I purchase direct from FA?


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:34 am 
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dbaker - FlightAware user avatar

Joined: Mon Jul 25, 2005 12:00 am
Posts: 2838
Location: FlightAware WHQ
tjowen wrote:
dbaker wrote:
We need to find some international distributors; Amazon is not the best at that.


Can I purchase direct from FA?


Unfortunately we don't have the retail or shipping logistics in place. Amazon is nice because we ship them a box of 100 and they do the rest.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:39 am 
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tjowen - FlightAware user avatar

Joined: Mon Mar 09, 2015 11:17 am
Posts: 378
dbaker wrote:
tjowen wrote:
dbaker wrote:
We need to find some international distributors; Amazon is not the best at that.


Can I purchase direct from FA?


Unfortunately we don't have the retail or shipping logistics in place. Amazon is nice because we ship them a box of 100 and they do the rest.


OK, you can let Amazon USA know that I'll be looking for an antenna and a filter when they are ready to include the rest of the world.
Thanks, Tom


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:07 pm 
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edgy - FlightAware user avatar

Joined: Tue Sep 18, 2007 12:00 pm
Posts: 197
Location: KTIK
What is the gain in dBi?
What is the dimensions?
How many Watts can it handle, or is it receive only?

$45 seems to be a premium price for a collinear. Looks like about $3 in parts.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 10:40 pm 
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courtney123 - FlightAware user avatar

Joined: Sun Nov 05, 2006 3:00 am
Posts: 58
Location: Honolulu, Hawaii, USA
I bought one. Here's hoping it improves on my 9-element home-made collinear.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Fri Jul 03, 2015 11:51 pm 
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digiblur - FlightAware user avatar

Joined: Mon Feb 24, 2014 10:24 pm
Posts: 49
edgy wrote:
What is the gain in dBi?
What is the dimensions?
How many Watts can it handle, or is it receive only?

$45 seems to be a premium price for a collinear. Looks like about $3 in parts.

Click the link in the first post. It has all the details.

For some people this is a steal as a colinear can be difficult to build exactly for 1090.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Sat Jul 04, 2015 11:52 am 
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k6rtm - FlightAware user avatar

Joined: Tue Nov 18, 2014 10:18 pm
Posts: 420
Location: Silicon Valley
digiblur wrote:
edgy wrote:
What is the gain in dBi?
What is the dimensions?
How many Watts can it handle, or is it receive only?

$45 seems to be a premium price for a collinear. Looks like about $3 in parts.

Click the link in the first post. It has all the details.

For some people this is a steal as a colinear can be difficult to build exactly for 1090.

This is a very good price for a 1090MHz collinear that's designed and built to take outdoor abuse for years.

bob k6rtm


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Sat Jul 04, 2015 11:55 am 
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courtney123 - FlightAware user avatar

Joined: Sun Nov 05, 2006 3:00 am
Posts: 58
Location: Honolulu, Hawaii, USA
+1


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Sat Jul 04, 2015 1:32 pm 
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PeterHR - FlightAware user avatar

Joined: Sat Jan 18, 2014 11:02 am
Posts: 700
Location: UK
My Bulgarian antenna http://www.ebay.com/itm/191621295415 has a similar gain and connection to this. in the best direction I'm getting about 225nm (420km)

I have an N - 'F Male' converter attached to the antenna. This is connected directly to a satellite LNB amplifier wrapped in self amalgamating tape.

This then goes to 9m of RG6, a power injector, then to the dongle - works well!

Everything under the antenna is 75 Ohm - so only one transition.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Mon Jul 06, 2015 12:20 pm 
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elpipila - FlightAware user avatar

Joined: Thu May 22, 2014 2:48 pm
Posts: 196
dbaker wrote:
We need to find some international distributors; Amazon is not the best at that.


Not on Amazon Mexico either but it just opened July 1.

If you can put it on EBay, Estafeta/Ebay will freight forward direct from US throughout Mexico for a very low transport cost.

https://estafetamembers.com/


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale - First Review
PostPosted: Thu Jul 09, 2015 2:03 am 
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courtney123 - FlightAware user avatar

Joined: Sun Nov 05, 2006 3:00 am
Posts: 58
Location: Honolulu, Hawaii, USA
I received the FlightAware antenna today and swapped it with my home-brew 9-element collinear. I left everything the same: LMA, power inserter, DC blockers at each end.

It's been cooking for about 3 hours and my initial opinion is... it's not as good as the one I took out.

I've got Virtual Flight Radar running and I'll see what the next couple of days brings. But there are several other receivers within 10 miles and I have some history to compare with them.
Where I usually ran about 6 or 7 fewer aircraft tracked in a 24 hour period one other receiver, I'm slowly losing ground with this new antenna. In the past 3 hours I've dropped from 8 behind to 11 behind.
Again - it's early and time will tell. I also have 1090 MHz SAW filter coming in and I'll see if that helps.

If it doesn't work out I'll pull the FlightAware stick and put mine back. I can walk away saying to myself I built a hell of an antenna :mrgreen:


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 09, 2015 3:49 am 
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obj - FlightAware user avatar

Joined: Tue Sep 30, 2014 7:14 pm
Posts: 3557
Yeah, my homebrew coco appears to have a bit more gain than the FA antenna too. But mine is physically twice as long so I'd expect 3dB gain just from that.. The construction of the FA antenna is certainly a lot better than mine ;-) and it probably has a better radiation pattern, though I have no good way of measuring it.


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 09, 2015 3:58 am 
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courtney123 - FlightAware user avatar

Joined: Sun Nov 05, 2006 3:00 am
Posts: 58
Location: Honolulu, Hawaii, USA
obj wrote:
Yeah, my homebrew coco appears to have a bit more gain than the FA antenna too. But mine is physically twice as long so I'd expect 3dB gain just from that.. The construction of the FA antenna is certainly a lot better than mine ;-) and it probably has a better radiation pattern, though I have no good way of measuring it.


Virtual Radar will help show the receive range and pattern in a few days and that will be the final jury on this. My homebrew stick is also twice the length of the FA but I was expecting the LMA to goose it a bit.

Nice to know I can still build them with stuff found in the garage...


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 Post subject: Re: New, inexpensive 1090MHz antenna for sale
PostPosted: Thu Jul 09, 2015 7:35 pm 
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hpaine - FlightAware user avatar

Joined: Mon Feb 23, 2015 9:42 pm
Posts: 24
I bought one of these flightaware antennas and I use a male N connector pigtail to mcx connector...... I connect my RTL-SDR right at the base of the antenna then I use a quality USB extension cable to the raspberry pi

It works great and there is no loss due to rg6 cable length .......

I am a happy camper !!!


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