MacAttack on That Drone Up In The Sky? It Might Be Built Out Of A Dead Bird.Code E on That Drone Up In The Sky? It Might Be Built Out Of A Dead Bird.Michael Black on Vintage Computer Festival East Was A Retro Madhouse.Sufficiently Advanced Tech: Has Bugs 71 Comments Good-day ladies and gents, I am off to replaces some puffed caps on a dead power supply for a 32″ lcd. Perhaps dialup could be adopted in this manner using these handshake signals to test the “airwaves” between the two link points (walkie talkies) instead of how in this manner the modem is testing a physical medium such as copper wire instead of free space between two points, which might take a bit more software logic/dsp/filtering/waste of time.įuck you Hackaday, your website encourages me to know too much shit about computer hardware. I was going to crack them open, look for the IC(s) responsible for the transceiver and datasheet that shit to see if either of the two pairs of walkie talkies I have are full duplex… then from there is either using some simple serial modem/audio software that I’ve found online for HAM and CB data transmission, but it’s a bit slow. I’ve always wanted to see this! My modem curiosity has peaked lately as I’ve been wanting/trying to set up a PPP or dialup connection across wireless via some GMRS walkie talkies my dad gave me. Posted in classic hacks Tagged dial-up, handshake, protocol Post navigation This was a problem if the modem was trying to send and receive at the same time. Apparently land lines disabled the speaker while you were talking so that you didn’t hear your own voice. The part we found the most interesting is that these modems needed to disable the echo suppression used by the telephone system in order to operate at full-duplex. But you’ll also want to read through her full write-up for a more narrative description. The main box on the graphic shows the audio spectrum from that clip, with an explanation below it. Her blog post includes an audio clip so that you can play back the full handshake sounds. Normally we just seem them as gimmicks, but really put together something special with this one. This may be the most useful infographic we’ve ever seen. ![]() This post explains each step in the dail-up handshake process. But few actually know what each of those distinct sounds were doing. Those not-so-beautiful sounds heralded the dawning of a technological era. If you’re old enough to have used a dial-up modem we’d bet you can do an imitation of the sounds it made while connecting.
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