[soft_radio] Elector Boards

Hi folks, I wonder if anyone knows of any other sources for the Elector Boards -- the shipping to the States (25 euros) is horrible. I tried etching the boards myself, but I can't get a good registration between layers. Thanks. 73, Jack (W0FNQ)

[soft_radio] Re: Elektor SDR photos

It looks like you may have etched your own boards. I tried this myself but couldn't achieve aququate registration between the top and bottom. Any suggestions? Thanks. 73, Jack (W0FNQ) --- In soft_radio@yahoogroups.com, miketa_us [EMAIL PROTECTED] wrote: I've posted photos of my homebrew

[soft_radio] Re: Phase Cancellation Of DDS Spurs?

Ray Yeap, like I said, in not too few words, it is sort of an idea. Experimental. I am seeing that the suppression of the LO IN, which then is modulated by the signal from the antenna, will unsuppress the LO IN and mix with it. And the spur I think would have to mix with something coming in on

[soft_radio] New file uploaded to soft_radio

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the soft_radio group. File: /SDR Spice Analysis Files/HF_General_Purpose_FET_Mixer.asc Uploaded by : ka9rza [EMAIL PROTECTED] Description : A Better Mixer, for general

[soft_radio] HF General Purpose FET Mixer

HF General Purpose FET Mixer File: http://groups.yahoo.com/group/soft_radio/files/SDR%20Spice%20Analysis%20Files/HF_General_Purpose_FET_Mixer.asc This is a low noise FET version of the mixer concepts I have been working on. And its harmonic content is suppressed a little more. And its

[soft_radio] Re: Phase Cancellation Of DDS Spurs?

SoftComplete Development Thanks for posting the links to the articles... Dan --- In soft_radio@yahoogroups.com, WB6TPU ray.anderson@ wrote: DDS spurs are an entirely different topic and are primarily generated due to the following mechanisms: clock spur feedthru, numerical truncation

RE: [soft_radio] Elector Boards

A friend tried to etch his own from the layouts and gave up. It wasn't the registration as he is OK on double layer boards, and has done lots before, you can centre drill the mounting holes and use those. What he had trouble with was the very fine artwork, and either etched away the tracks or

[soft_radio] Re: Elector Boards

Dave, Thanks for the reply. I used Press and Peel on a laser printer and got very nice patterns, even on the fine pitched lines. I tried a couple methods of getting registration -- taping the top and bottem images together, then drilling index holes through a sandwich of the images and the

[soft_radio] API for hardware layer

Hello Now I'm working on opensource SDR software project. Major disadvantages of known sdr software is the limited support of different sdr-hardware. Only specific hardware supported or generic SoftRock-like. I think that good idea will be the develop some generic API specification for describe

[soft_radio] Re: API for hardware layer

--- In soft_radio@yahoogroups.com, Andre Belokon [EMAIL PROTECTED] wrote: Hello Now I'm working on opensource SDR software project. Major disadvantages of known sdr software is the limited support of different sdr-hardware. Only specific hardware supported or generic SoftRock-like.