Homebrewing a Bluetooth Interface for Ham Radios.

I was Goggling for information on PSK 31 interfaces when I find out K7AGE excellent PSK31 tutorial video on Youtube.

Searching for other Randy videos I find a project that catch my attention and inspire me in install wireless Bluetooth interfaces on my radios.

Randy’s videos are straight forward, and during his preliminary explanations he mention Frank Dziurda K7SFN who uses the Jabra A210 Bluetooth interface connected to the IC7000 on his mobile HF station.

One of the interesting points of this article is my solution to transform a low cost “back of the ear” Bluetooth ear set into a high quality Bluetooth wireless communication headset.

The reader can search for Jabra A210 on e-bay. Some are in good working conditions and some are no working units that have battery problems.

The photos will show a simple solution using 3 AAA 900 milliamps Metal-Hydrate batteries connected to the Jabra A210 PC board that will allow operation for weeks after each charging cycle.

This batteries can be safely charged by the standard original charger.

This interface is working on my IC7000 base station.

The following photos will show the Jabra A210 Bluetooth interfaces for the .Yaesu FT817, Icom IC 703, Kenwood THF 6A and the Icom IC 7000.

You can adapt this interface to any VOX equipped transceiver following the audio input output schematic diagram.

JABRA A210 CONNECTIONS

The Jabra A210 has Velcro applied on the back part to be fast transferred from the Yaesu FT817 to the Icom IC 703 and to thr Kenwood THF 6A that I use on the car connected to a magnetic mount antenna.

YAESU FT817 BLUETOOTH INTERFACE

 

ICOM IC703 BLUETOOTH INTERFACE

 

 

KENWOOD THF-6A BLUETOOTH INTERFACE

 

ICOM IC 7000 BLUETOOTH INTERFACE

 

Homebrewing a Bluetooth Communication Headset Using a
Low Cost Bluetooth Ear Set.

 

1. Select a standard phone/microphone headset and take off the microphone preserving the audio wires as long as possible.
2. Select a standard low cost Bluetooth ear set and carefully takes off the mini speaker preserving the audio wires as long as possible.
3. Solder the audio wires that were connected to the headset microphone wires to the audio output wire that were connected to the mini loudspeaker.
4. Solder the other extreme of the above wire to left and right earphones in parallel.

PY1 AHD ALEX (Alexandre Grimberg).

e-mail: py1ahd@ig.com.br