Cannot transmit on HackRF One with SDRAngel

[DerrickLau]

Have you read the HackRF documentation?

yes

What outcome were you hoping for?

To be able to transmit voice to my crappy BaoFeng UX-VR-9 walkie talkie.

What outcome actually happened?

Nothing transmitted

What operating systems are you seeing the problem on?

Windows 10 version 22H2 (OS build 19045.4894)

What is the output of hackrf_info?

C:\Derrick\AmateurRadio\hackrf-tools-windows>hackrf_info
hackrf_info version: git-17f3943
libhackrf version: git-17f3943 (0.9)
Found HackRF
Index: 0
Serial number: 0000000000000000f75461dc287c23c3
Board ID Number: 4 (HackRF One)
Firmware Version: 2024.02.1 (API:1.08)
Part ID Number: 0xa000cb3c 0x004f4f66
Hardware Revision: r9
Hardware appears to have been manufactured by Great Scott Gadgets.
Hardware supported by installed firmware:
HackRF One

Are you using any third-party software?

SDRAngel v7.19.1
I start it. Then add a transmission device, which I set to my HackRF One. I set the frequency to I then create a transmission channel, Frequency of 435 MHz. I go to the NFM modulator panel and press the microphone panel to on. In Preferences->Audio, I set output device to my Realtek Microphone and Speaker, and input device to my Realtek Microphone and Speaker. I press the play button in the device window and speak into my microphone, but my walkie talkie doesn't pick up anything.

Are you using any third-party hardware?

No