6600M and Koss SB45

VladSF

Hi,
I was wondering if someone can help me figure out what i am doing wrong.
I am very new to flex and figuring things out :)
Youtube channel been a great help!

But anyway i am having trouble figuring out why my SB45 is not working with 6600m
I have audio but mic is not working.
I am using 3.5mm jacks for mic and audio.

Geoff AB6BT

If it has an electret mic Is bias On?

VladSF

I do haveBIAS on and +20 on, but not sure what kind of mic it is

Tim K9WX

The Amazon page for the Koss SB45 says it is an electret mic. For what that is worth.

I had a similar problem with the Yamaha CM500 headset. No mic audio. It turned out the bias voltage from the Flex did not match up with the bias voltage need of the headset and I had to make an adapter cable. See this post for more info: Yamaha CM500 hookup to 6600? — FlexRadio Community

I'm not saying that this IS the problem in your case, just one possible avenue of investigation.

Tim K9WX

Geoff AB6BT

I use an SB45 with my 6400. When I get home this afternoon I'll let you know how I have it configured.

Make sure DAX is OFF

VladSF

Thank you guys for your replies, still figuring it out.
May be when i order a foot pedal time to think about a diff headset too

Geoff AB6BT

VladSF; Sorry I did not follow up. I am still not near my radio but I believe I just have the two 3.5mm plugs form the SB45 in the appropriate Mic and Phones jacks.

VladSF

Let me know when you make it to the radio
I still have no TX, from other replies I feel I need to make an adapter but if your work maybe I have smth wrong in settings

VladSF

In my KX3 I just plug it in and it’s works

KD0RC

Hi Vlad, do you have your radio set for Mic input with enough gain to put the peak indicator somewhere around -5 dB and the +ACC and DAX buttons off?

Geoff AB6BT

VladSF: Here's what I found. It appears that the tip and the ring of the 3.5mm mic connector on the SB45 are wired together. So if you plug it directly into the radio there is no signal between the tip and the ring.

I can't find the drawing I made initially and I did not disassemble the adaptor I made so I believe this is correct.

I made an adaptor wired like this:

Mic--------->Radio

T

R------------>Tip

S------------>R & S

I hope that helps.

VladSF

Thank you

Mike-VA3MW

You may find that a TRS to TS adapter (Amazon) solves this quickly.

I did forget to mention, that is what I had to add on the Mic jack on the back of the radio.

VladSF

Thanks Mike will look

Mike-VA3MW

https://www.amazon.com/Stereo-Adapter-Female-RFAdapter-Headphone/dp/B08V53BJ54/ref%3Dsr_1_1_sspa

VladSF

Got smth similar just different brand thx

VladSF

Got it working, thank you all for help.
So now I assume I create a profile for it and customize.