Tuesday, 22 October 2013

Arduino Sudden Tx Shield Available Now!

I am delighted to see Kanga's announcement that the Arduino "Sudden" Transmitter Shield is to be launched at the Rishworth G-QRP Mini-Convention at the weekend...

You met my prototype in this post, where I promised that, once the commercial kit was ready, I would "post the complete schematic, in true open-source spirit".

Well - here it is...

As you see from the schematic, the shield hosts not just George's transmitter circuit but also a power supply (to derive 5V system power from the "12V" radio supply) and a flexible input buffer/amplifier arrangement, to allow the transmitter to operate with a range of RF signals (including - of course - those from the Kanga / m0xpd DDS Shield).

The transmitter puts out just under 2W - as I confirmed yesterday by sending WSPR signals on 30m which were received in Tasmania (again) and Venezuela!

There are complete design files (including an Eagle PCB design, suitable for single-layer construction - as in the prototype) on the "Occam's Micro" support page

You can meet the new transmitter shield on the Kanga Products stand at Rishworth.

See you there!

...-.- de m0xpd

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