@tttadam No, not compatible. The pigtails have either a male or female (tech speak) SMA plug. The one with the rod is the male one. There are adapters available, but better get another pigtail.
P.S.: That happened to me too. I ended up in having all sorts of pigtails and adapters in my drawer.
@josesebas1990 from what I understand you should be able to use both and alternate between them by software, but probably not use them at the same time (e.g. listen or receive on both antennas at the same time).
@dan thx for testing but shouldn't it be 2 - 5 cm instead of mm? At least that is my experience with other rfid/nfc boards. Several mm is nothing when using an enclosure...I can't imagine that this is the ultimate goal of the supplied antenna
@jcaron I have two antennas which perform more robust. One, which looks similar, but is 22 cm long (18 cm up from the hinge). That one shows a nice current profile, peak in the middel of the "active" section and going down to almost zero towards bot sides. The other is a home-brew ground plane antenna, along a recipe from the ttn forum, which also work pretty well. Both are not very sensitive to touching the xxPy and moving.
Compared to these the PyCom antenna performs between 6dB and 16 dB, depending on placement and touching. I have my xxPY built into a aluminium box with the antenna connector at the shorter side. The PyCom antenna shows some current at the connector, which explains the sensitivity to touching.
Picture: GP antenna on FiPy in a box, built from a SMA connector an 1.5 mm wire. Tip wire it 82mm, the radial are 86 mm.
0_1526903721654_GP antenna on FiPy.jpg
@nicobijl Interesting use case, though you'll be faced with reflections and multipath which may give you false results, depending on the exact layout (and most importantly, distances). Also, you should check the gain of your antenna in various directions, it's not because it's "concentrated" in some directions that it doesn't receive anything in others.
Note also that if you do anything that transmits (active scanning, which I believe is the default now?), using a directional antenna means more gain, which may bring you above the allowed TX power threshold (depends on your region). Conversely, at short distances the high gain main saturate the receiver.
Finally, one would need to check the exact radiation pattern, but I'm not sure 4 such antennas would be enough to cover 360°, they have a relatively narrow aperture.