KD8CEC Amateur Radio

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I am planning a project using Raspberry Pi.

Posted: 15 Jul 2020 07:28 AM PDT
http://www.hamskey.com/2020/07/i-am-...pberry-pi.html

I have several types of Raspberry Pi boards.

The Raspberry Pi board is probably one of the most sold boards in recent
years.
Raspberry Pi boards are inexpensive and have great performance. The best
thing is that you can use Linux.

The figure below is a collection of RPI V1 to V4.

It is RPI V1


The board on the right in the photo below is a recent RPI V4.

Already, amateur radios are using a variety of Raspberry Pi boards. I am
trying to make something new.

For example, network radios for amateur radio, Devices using Wsjt-x

I experimented with cheap USB sound cards for the new project. All are USB
sound cards under $4.

The sound quality was all poor. However, the RPI's fast CPU will enable DSP
functionality.

Below is a $2 USB sound card with a cable attached to it. All are
compatible with RPI.



Below, I thought it was possible to input a 2CH microphone with a $4 USB
sound card. However, it was only 1CH microphone input.


The first project using RPI is a network(DMR) transceiver for DV Switch (or
Dv Link).

With an RPI and 3.5 LCD and a USB sound card, it's easy.
You can use DMR more conveniently. (Without DMR radio)

I am testing now and will post a few days later.

Thank you for reading

Ian, KD8CEC