DUML Commands

DJI FPV System DUML Commands

Use https://b3yond.d3vl.com/duml/ to edit DUML commands and send them to your equipment.
Sending any of the commands shown in this documentation could cause damage to your equipment if used incorrectly, so please use them correctly 😁

Change the frequency on the air unit and goggles

It's possible to go past the stock ranges down to 5260MHz

Goggles side = target: 1400, cmdset: 9, cmdid: 13, payload: 11XXXX (XXXX = aa09 for 5650MHz)
example -> https://b3yond.d3vl.com/duml/#551004562a0e640000090d11aa090d18

Airunit side = target: 0900, cmdset: 9, cmdid: 13, payload: 11XXXX (XXXX = aa09 for 5650MHz)
example -> https://b3yond.d3vl.com/duml/#551004562a09640000090d11aa09eff1

frequency table

channel	hex value	dji_freq	freq range	calc min/max
MIN	2408	2084		5260
1	aa09	2474	5650-5670	5650
2	cd09	2509	5685-5705	5685
3	f509	2549	5725-5745	5725
4	180a	2584	5760-5780	5760
5	3b0a	2619	5795-5815	5795
6	860a	2694	5868-5888	5868
7	a80a	2728	5904-5924	5904
8	5d0a	2653	5829-5849	5829
MAX	b20a	2738		5914

Example with Spectrum Analyzer, Thanks Mad's Tech! https://youtu.be/_8r397J9Zw8

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Change the Bandwidth on the air unit and goggles

Goggles side = target: 1400, cmdset:9, cmdid: 13 payload: 0dXXXX (XXXX = 0100 for 0.1Mbps, e503 for 25.4Mbps)
example -> https://b3yond.d3vl.com/duml/#551004562a0e640000090d0de503cf52

Airunit side = target: 0900, cmdset:9, cmdid: 13 payload: 0dXXXX (XXXX = 0100 for 0.1Mbps, e503 for 25.4Mbps)
example -> https://b3yond.d3vl.com/duml/#551004562a09640000090d0de5032dbb