Category Archives: DIY

flip-flop/BCF project

in DIY by DP | 0 comments

Ray over at the diyAudio forum has been working on his flip-flop/BCF project: I’ve just finished a project to roll up the developments into a more ‘finished’ build, feeding the balanced outputs from the flip-flop board into a Broskie BCF buffer stage. … Read more

Posted in DIY | Tagged , | Leave a comment

Simple small QRO for HF

in DIY by DP | 1 comment

Marko Pavlin has been working on a HF amplifier project: I followed the ARRL Homberw challenge 50 watt aplifier entry. It is low cost, simple HF linear amplifier designed and built by the author as an entry in the ARRL’s 2009 … Read more

Posted in DIY | Tagged , | 1 Comment

Vocoder encoder relay board

in DIY by DP | 1 comment

Jaanus published a new build, a vocoder encoder relay board: I designed couple of vocoder encoders. Vocoders are devices that encode sound by chopping it up by frequency bands and express each frequency band only by its amplitude. This kind of representation allows … Read more

Posted in DIY | Tagged , | 1 Comment