The Derwent Fells and Galloway from Helvellyn


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Last Update: Thursday, 12 October 2017


New! The 2-Tone Kit - A classic piece of test equipment redefined.

Our newest kit, a two tone test oscillator employing digital signal synthesis techiques to generate a low distortion composite audio test signal for SSB transmitter testing. The 2-Tone produces a 700Hz/1900Hz test signal with adjustable output level and tone balance which when connected to a transmitter audio input allows linearity to be inspected on an oscilloscope or spectrum analyzer. In addition to dual tone operation the 2-Tone can also generate a variable frequency single tone output for testing the transmitter's audio channel bandwidth. Visit the 2-Tone page for more information.

"Eden dsP" v1.3 PCBs now in stock

Double sided, silk screened PCBs to construct the DSP module. Supported by free software, this flexible design offers ideal route into DSP. Capable of operating at up to 70MIPS with the new dsPIC33E 16 bit processors, this easy to construct unit is suited to many audio and communications applications. This revised version incorporates several changes to enhance the versatility of this popular unit. Visit our DSP page for more information; DSP

"Eden dsP" Yahoo Group

Have you built or are you considering building an Eden dsP module? Then the Eden dsP Yahoo group is for you! The group features a forum for news support and exchange of ideas along with a files area offering code examples and projects. More details at;

"X-Lock" the TS530/830 and the VFO820!

Paul Stagno, W0PAS has been upgrading these Kenwood classics with the X-Lock. An interesting feature is the use of the now widely available low cost DC-DC step up converters to generate the X-Lock supply from the 9V rail in the VFO820. Read his article on the X-Lock Solutions page.



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