# The big Antenna S11 catalog **URL:** \ **Category:** Uncategorized\ **Created:** [July 11, 2018, 3:49pm UTC](https://www.thethingsnetwork.org/forum/t/the-big-antenna-s11-catalog/15782 "2018-07-11T15:49:54Z")\ **Posts on this page:** 1\ **Showing post:** 10
**Author:** ![jpmeijers](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jpmeijers/32/48543_2.png) [@jpmeijers](https://www.thethingsnetwork.org/forum/u/jpmeijers)\ **Post date:** [October 27, 2018, 11:19am UTC](https://www.thethingsnetwork.org/forum/t/the-big-antenna-s11-catalog/15782/10 "2018-10-27T11:19:36Z")
In my search for better whip antennas I ordered some from RS Components. The first one is: [https://za.rs-online.com/web/p/telemetry-antennas/0542563/](https://za.rs-online.com/web/p/telemetry-antennas/0542563/) ![22](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/b/2/b23f98971e6e5b8c9a23b85d32c6bcc9498d2b6b.jpeg) This antenna resonates at 885MHz, a little higher that promised. But it is also quite wideband, so even at 868MHz the S11 is very low. So this antenna performs good enough for an end device. ![54](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/b/a/bae20c1c308217fca7c31e20b55db76fd925af32.jpeg) As an aside, this antenna also resonates at 1900MHz, saying that it might have been designed as a GSM antenna, but later tuned for 868MHz. ![29](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/1/e/1eb5bc11ca99d18a48cfb80e8d4cf03705957b01.jpeg) This SWR at 868MHz is 1.2, which is very good. ![46](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/a/4/a459110deeefe8566e968aca4f65db7363d19fc7.jpeg) **Conclusion** This antenna has acceptable performance for end devices. I will not use it on a gateway where I do not want to receive unwanted signals. --- _[View the full topic](https://www.thethingsnetwork.org/forum/t/the-big-antenna-s11-catalog/15782)._