High Performance Software Defined Radio

An Open Source Design


License NCL
Author Graham, KE9H
in kit form, from TAPR


October 18, 2009 TAPR taking orders on Excalibur expect to ship by the end of the month.

April 19, 2009 Assembly and testing of the Alpha cards is complete.

Excalibur 10 MHz Reference Injector card

About Excalibur

Excalibur is a small accessory card for the Atlas bus that enables the use of an external 10 MHz frequency reference for locking the frequency of an HPSDR radio to the same accuracy of the standard, or GPS disciplined oscillator. It also provides an optional TCXO frequency reference for the HPSDR, that is much better than the on board 10 MHz oscillators, although not as good as an external standard or GPS-DO. This board is much simpler than the main HPSDR cards, so I expect that they would be offered as either bare boards, or as kits as was Atlas. This card uses the larger 1206 surface mount parts for easier manual assembly.

The project leader for Excalibur is Graham, KE9H.

Link to Wiki

Our HPSDR Wiki will contain the latest news, links, files, etc. for Excalibur. Here is the direct link to the HPSDR Wiki: EXCALIBUR

Link to Documents

Here is the direct link to the Excalibur Documents:

Support Documents