(tr)uSDX Forum

I am looking for Speaker/mic suggestions , thank you

What do you mean?

Hello, I am in the process of designing a 3d printed adaptor for those mics with 3.5 and 2.5 jack. Will use panel mount female 3.5 and 2.5 jack in a 3s housing that terminate in two short leads with dual 3.5mm. will update when finished.

Awesome , count me in for one , i have one from skinny Chinese uSDR

Thank you Vlad

Vlad.cepraga wrote: ↑12 Feb 2022, 11:50 Hello, I am in the process of designing a 3d printed adaptor for those mics with 3.5 and 2.5 jack. Will use panel mount female 3.5 and 2.5 jack in a 3s housing that terminate in two short leads with dual 3.5mm. will update when finished.

How is your design coming along?

Is this for the Kenwood (Baofeng) style of Speaker mic? I was toying with cutting the connections off and rewiring to fit the (tr)uSDX but an adapter would be great - Hear so many conflicting reports on the audio quality from the speaker itself, but apparently headphones can sort it out.

I have one of the Chinese mics sold for usdx. It ends in a 4 conductor TRRS 3.5mm adapter. I plugged it into a splitter that is for a headset to an old computer. TRRS in, 2 TRS out. I had to rewire the mic cable inside the mic and the only way it could work was to use the microphone marked plug into the audio and the headphones marked connector in the PTT connector.

The volume must be high as the speaker is 8ohm. The mic ant PTT function. I will perform sound checks as I can make contacts. The rewire was done with an ohm meter to swap wires to the right position and I tied the negative mic and speaker connections in the microphone to a common ground.

Colin
K6JTH

Here is a photo of the final wiring.

Pay attention to the speaker impedance. The small speaker connected to the PCB is 32 ohms. So also externally you have to connect something similar. 8 ohms is too little, better to use headphones.

I want to know any good/cheap/portable microphone to tr uSDX

I am going to buy tr usdx qrp transceiver from authorized aliexpress dealer, and I want to use It with external microphone

Thanks you very much.

73's

https://www.facebook.com/groups/trusdx/ ... 052153143/

I’ve posted pics in here of an adaptation to a Baofeng -Kenwood style earpiece speaker mic

Pardon me if this has been discussed. Looking at the schematic, it appears that the external microphone should also be electret. Does anyone have input on a microphone that sounds good with the rig?

Tnx,
Dale W4OP

I am assembling an Electret capsule, there is not much to do or to look for.