Adding Gizont 868MHz 40cm omni fiberglass antenna.

README.md

@@ -50,6 +50,14 @@ SWR: `5.895`
 
 Impedance: `15.76 Ω`, `-j45.05`
 
+### [Gizont IOT 868 omni 40cm (grey)](antennas/gizont_iot_868_omni_40cm_fiberglass/README.md)
+
+#### 868 MHz
+
+SWR: `1.118`
+
+Impedance: `51.33 Ω`, `j5.473 Ω`
+
 ### [Gizont Nb-iot / LORA Soft Antenna M2 (200 mm, 868 MHz)](antennas/gizont_nbiot_lora_soft_antenna_m2/README.md)
 
 #### 868 MHz

antennas/gizont_iot_868_omni_40cm_fiberglass/README.md

@@ -0,0 +1,26 @@
+# Gizont IOT 868 omni 40cm (grey)
+
+![photo](images/00_photo.jpg)
+
+## Where to buy
+
+- [GIZONT Antenna Store on Aliexpress](https://aliexpress.ru/item/1005008332376553.html?sku_id=12000044628348634)
+
+## Declared specs
+
+Gain: `5dB` (quote from Aliexpress item page)
+
+## Measurements
+
+### 868 MHz
+
+SWR: `1.118`
+
+Impedance: `51.33 Ω`, `j5.473 Ω`
+
+<details>
+<summary>Screenshots</summary>
+
+![Measurement at 868 MHz](images/01_measurement.png)
+
+</details>