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From: | Martijn Moeling |
Subject: | Re: [Discuss-gnuradio] dive into gnu-radio |
Date: | Wed, 16 Mar 2016 21:33:48 +0100 |
I must say I have similar feelings even though I am a fully licensed ham radio operator and a low level protocol engineer. I have have a hard time understanding most of the blocks. The tutorials are going up to a point where things get interesting and then they end. Although I do understand the basic concepts of dsp, I can not seem to get some sort of next step in understanding stuff like root raised cosine filter, what it does and when to use it. Other concepts like stream tags seem a solution to implement a simplex fm radio (like a ptt button) so I can use my b200mini to use a nearby repeater. I spent hours and hours experimenting with no success. This is something I would consider a simple task. I might miss something but I do not know which terminology to use to get my questions answered. I would like to get the output of a frame grabber (composite video) and turn it into a analog television transmission to be received by an old analog sat receiver for ham use. With my b200mini this would be doable I guess. For now this seems impossible even though I have a black screen and audio carriers working, implementing the video part in GRC seems way beyond my skills and I do not seem to get a proper entry point. Starting with a static picture in memory (to test and generate sync signals) was my next step but I keep running around this issue in circles. I feel there is a gap between the knowledge of the experts and the information for newcomers. My questions have been answered pretty quickly but the answers raise even more questions and confuse me. Martijn
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