Misleading marketing bullshit that people will take in. It’s a vertical dipole, by definition the best it can ever be is 0dBd or 2.15dBi.
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LOL, i even didn’t realize that. I was just looking for a ready-to-use antenna which isn’t too expensive.
Device is working, so i am good with it.
It certainly fits that description, it’s just a pity they claim performance it can’t achieve.
That would be a 1/4 on top of a …? (fill in the blank)
For the price, you may do better with one of these colinears.
I haven’t tried it and it certainly won’t be waterproof. but for indoors it may be quite good.
Item location:
Shenzhen, China
I will not buy stuff which needs to be shipped thousands of miles as long as i get it for an acceptable price around my location.
Beside the wrong marketing information the device looks very similar to the chinese devices sold on eBay, so this should have a similar performance.
Friend of mine is using one with a green Radarbox stick and was totally unhappy with it.
Anyways, thanks for your suggestions, i’ve seen these as well.
There is another guy selling self made antennas via eBay.
Now after almost 24 hours i can say that the performance of both devices is similar, so at least i have a spare device 
The suggestion wasn’t for you, it was for @ Humpfrey who expressed an interest in a new antenna.
Sorry, i thought i was permitted to reply 
Of course you are ‘permitted to reply’ - you are welcome to try one too (if you can find one local of course!)
My next attempt would be testing either the FA or the RB24 antennas which are in stock on several dealers.
But i would not expect giving me a better performance.
Or maybe later this year i am trying one of the devices sold by this czech guy on ebay. These seem to be also reliable.
But not now, i stressed my wife already and the next turn is for and her hobby “spinning”.
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Which antenna would you be comparing these two antennae to?
Why are you not expecting better performance?
I observed a significant increase in range in a side-by-side comparison of an FA antenna and a PCB antenna. The increased range also resulted in an increased aircraft count.
Of the three antennae you have mentioned, which one is giving you the best performance and what metric are you using to define “best”?
S.
Do you have a link to this device?
The range cannot be extended if you’re already at the max what’s possible from geographic location. And all antennas are giving nominative the same signal strength. Based on these two factors i do not expect a significant improvement for my environment. For yours it can be different.
With “best” i mean the max. message rate with a specific receiver device and the range reached which is possible.
I can only repeat my example screenshot. To the left the blue range is the max based on heywhatsthat, to the right is the range which the receiver is currently achieving (Screenshot taken a few days ago. The green area is from Radarbox24, displayed are the max ranges over the last seven days.
No direct link, but he’s selling his stuff frequently on eBay.
You mean Stanislav Palo? His ebay page is here.
Doesn’t currently have any ads-b antennas on there, but if you email him and ask he’ll let you know when he’s getting more. I think he either makes them himself or sources them locally. I have one of the COL1090/5-H Vinnant ones and it’s been performing well. I think he’s in Slovakia, despite his ebay address.
Yes, thanks @caius that’s the one i meant. Slovakia, correct. Sorry for my mistake.
I meanwhile switched back to my first antenna which i also got from ebay, but made from a german private enthusiast. It performs outdoor slightly better than the one i bought recently.
Sunday is a good day for try&error
Other question: How do you seal your antenna connector?
Mine is using a BNC-Connector (don’t ask why the guy used this prehistoric one ), i use an adapter which connects it directly to the shielded coax cable. The connector on the cable is waterproof and it’s a small housing at the end of the antenna which covers the connection partially. So wind can pass by, but it’s shielded from rain.
Shall i leave it open or cover this part also? Thinking about a kind of foil, but then i have concerns regarding condensation water
The connector for my antenna is within the mounting bracket, so is largely shielded from direct water ingress. It’s an N Connector which are quite water resistant anyway, but I also put some silicone grease in it which should protect from any corrosion.
BNC seems a poor choice for an external connector - I’d want it well protected. If it’s out of the direct weather then it might be OK, but you might want to wrap it with some self-sealing tape and use grease.
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The BNC connector is covered including the adapter to Coax.
The coax connector itself is waterproof mounted at the cable.
I think i will cover the connection completely but leave it open at the lower end so that air can still flow to avoid condensation.
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All my open air connections are weatherproofed in the same way.
Self amalgamating tape wrapped around the joint from one end to another and then electrical insulating tape on the outside to protect the self amalgamating tape from UV damage.
I’ve never had one fail due to water ingress or condensation. When I changed my hexbeam recently, I cut through the tape and found the connector just as clean and shiny as the day I taped it up, eight years previously.
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give me eight years, then i will open mine 
Please see this post:
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