update GD77 page

content/equipment/handhelds/radioddity-gd77/index.md

@@ -4,7 +4,7 @@ summary: >
   Consider the OpenGD77 firmware and you're all set with a very
   user friendly and customizable handheld radio.
 date: 2020-10-17
-lastmod: 2024-02-24T21:28:01+0000
+lastmod: 2024-03-10T14:27:20+0000
 #categories:
 #- amateur-radio
 showBreadcrumbs: true
@@ -110,3 +110,38 @@ an easy to use band scope on the GD-77.
 
 Press and hold the hash key <kbd>#</kbd> when in VFO mode to enter this feature.
 
+## Output power on 2m
+
+![2m band output power](power-2m.png)
+
+| Power setting  | Out power (device 1) | Out power (device 2) |
+| :--- | :---   | :----- | 
+| +W-  | 7.50 W | 7.60 W | 
+| 5W   | 5.31 W | 5.40 W |
+| 50mW | 376 mW | 152 mW |
+| 1W   | 1.30 W | 1.35 W |
+| 2W   | 2.37 W | 2.14 W |
+| 3W   | 2.90 W | 2.70 W |
+| 4W   | 3.76 W | 3.40 W |
+
+I have two devices and they differ on some settings (50mW setting for example).
+
+## Output power on 70cm
+
+![70cm band output power](power-70cm.png)
+
+I have only measured one device as devices may differ largely.
+
+| Power setting  | Output power|
+| :---- | :----- |
+| 50mW  | 917 mW |
+| 250mW | 925 mW |
+| 500mW | 1.86 W |
+| 750mW | 1.49 W |
+| 1W    | 1.67 W |
+| 2W    | 2.35 W |
+| 3W    | 2.96 W |
+| 4W    | 4.22 W |
+| 5W    | 7.50 W |
+| +W-   | 8.41 W |
+