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Written by Hans Summers
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Wednesday, 10 September 2014 03:26 |
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The Weaver method (also called 3rd method) of Single Sideband reception is a little-used technique in HF receivers (except perhaps in Software Defined Radios architectures). This article is an introduction, some practical experiments with a 10m Weaver method receiver, and a collection of information on the subject. |
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Last Updated on Wednesday, 18 November 2015 05:12 |
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Written by Hans Summers
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Monday, 01 June 2015 03:49 |
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Last Updated on Sunday, 26 June 2016 09:47 |
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Written by Hans Summers
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Thursday, 04 June 2015 03:03 |
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Here's a simple and easy single-chip 10.000000000MHz GPS-disciplined frequency reference, based on a small 14-pin AVR microcontroller ATtiny24. This implements a kind of software "Huff Puff" method stabilisation. It uses an old junkbox 10MHz OCXO. The final accuracy is about 0.5 parts per billion (ppb). |
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Last Updated on Monday, 10 October 2016 09:48 |
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OCXO and synthesiser design |
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Written by Hans Summers
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Monday, 01 September 2014 10:30 |
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This page documents the design and development of an OCXO and Synthesiser module. There were several motivations for developing this module, partly as a replacement for the popular AD9850 DDS module, available inexpensively on eBay and elsewhere. |
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Last Updated on Wednesday, 20 May 2015 09:09 |
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Written by Hans Summers
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Wednesday, 21 January 2015 05:09 |
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It's really simple to make a QRP power meter measuring RF output powers from a few mW up to half a watt. This simple project described here is half an hour's work and all components are from the junk box. I used an old "VU" meter from an old piece of consumer equipment, probably a 70's Hi Fi or something similar, long-since forgotten. |
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Last Updated on Wednesday, 20 May 2015 09:04 |
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