Spark Duck / Flex Antenna

Hi, I am trying to buy a new Spark Core and I am thinking about buying one with an external antenna. Does anyone have a picture of a Duck or Flex Antenna, because I have no idea how they look like?

Seconding this request, I am looking to purchase a few more cores and I would love to not have to go order a separate antenna elsewhere…

There are pictures in the store:

“Flex Antenna” is a small PCB strip, a “Duck Antenna” is the type of antenna you’re used to seeing on the back of a router (black plastic nub)

Awesome! Thank you, just what I was looking for!

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Hello!
I’m considering buying a new spark with duck antenna… unfortunately my chip spark does not get the signal from my wifi.
Can you please tell me what is the range approximate of a spark with duck antenna?
Thank you,
dk

Wish we could see the dimensions of the antennas. I’m considering the flex for inside an enclosure, but don’t know if it will conveniently fit. Also, it would be nice to know the length of the duck antenna as well.