VTX Mount

Big Project	Project	Project Manager

Big Project	Project	Project Manager
Electronics Mounts	VTX Mount	@Nathan Green

Task Description

Design a mount for VTX-1G3SE (or RMRC 1.3) while matching the 30 x 30 mm grid on the top plate of Pegasus.

Constraints

Constraints	Written By	Append Date

Constraints	Written By	Append Date
Uses M3 clearance holes to mount onto the top plate	@Smile Khatri	October 15, 2023
Passive cooling system because VTX gets very hot	@Smile Khatri	October 16, 2023
Mounts to bottom of arm to create distance from high power electronics	@Nathan Green	November 2, 2023

Relevant Contacts

Subteam	Contact	Contact Description

Subteam	Contact	Contact Description

Assignees

Assignee	Asana Task	Date

Assignee	Asana Task	Date
	Mechanical - VTX - Asana

Task Progression/Updates

Author: @Smile Khatri Date: 2023/10/16

Preliminary Research:

Dimensions of VTX-1G3SE ((EOL) Video Transmitter 1.2/1.3GHz, VTX-1G3SE – Matek Systems)

We’ll be most likely using a 800mw VTX. This means the Radio Frequency (RF) power output = 800mW.

At an input of 12 V, the VTX consumes 250 mA according to the specifications. This means that the total power consumed is 0.250 A * 12 V = 3 W. If the power output is 800 mW, then the remaining power is 3 - 0.8 = 2.2 W.

This power is most likely dissipated as heat.

Questions/Ideas:

Run the VTX on ground for 30 minutes to find the operating temperature. We can use thermal camera too to determine where part of the VTX get most hot and place heat sinks accordingly.
Which areas of the VTX generates the most heat? Is it worth determining which areas to put the heatsink strategically to cool the VTX as much as possible or would this be trivial?

Author: @Smile Khatri Date: 2024/02/13

Flight test team ran into some interference issues with this VTX. I (Smile) have confirmed with Nathan that this VTX will not go on Pegasus.