Thunder Chicken - Development Blog

... Codename: Thunder Chicken...

What's dis: The development/build log for (yet another ;-)) open source project.  The basics are an integrated ESP32 based flight controller with integrated 433 MHz LORA long range radio and dual band (1.3 / 3.5 GHz) video transmitter.

Mission statement: Learn, Fly and have fun

Current Status: (3/29/2018) WIP - Working on the schematic.

Development Files: Here on github

Latest Picture:

Quicklook - ELECTRIFYRC R33M 3.3 GHz Module for Fatshark Goggles

Here are a handful of microscope pictures of the 3.3 GHz Fatshark style receiver module.  Click the pictures to get the zooms ;)

Enjoy :)

~pk


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Notes:
- The SAW filter on the RTC6715 is a NDF4816B (Datasheet here).  The IF frequency is 479.5 MHz.
- The mixer is driven by a ADF4350 Synth
- Mixing is highside, thus when the RX channel is set to 3320 MHz, the ADF4350 is set to 2840.5, Giving it a 1st IF of 6160.5 MHz.  Consequently, the RTC6715 synth is programmed to (6160.5 - 479.5 = 5681 MHz)

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URL: http://hobbywireless.com/electrifyrc-products-c-281/r33m-33ghz-module-for-fatshark-goggles-p-4535.html