Artem liked Home automation hub using Pis, Arduino and more!.mircemk has added details to Arduino Door Lock with Smartphone Flashlight Login.mircemk has updated components for the project titled Arduino Door Lock with Smartphone Flashlight Login.DrewTheMachinist on Making A Guitar Go To Eleven, The Hard Way.Manfred on Displays We Love Hacking: SPI And I2C.Chris on How Do You Test If An EEPROM Can Hold Data For 100 Years?.Arya Voronova on Displays We Love Hacking: SPI And I2C.DT604 on When Is An Engineer Not An Engineer? When He’s A Canadian Engineer.hartl on How Do You Test If An EEPROM Can Hold Data For 100 Years?.Posted in Radio Hacks Tagged amateur radio, FT8, Si47xx, SI5351, transceiver Post navigationĪustralia Bans Engineered Stone, Workers Elsewhere Demand The Same 164 Comments We’ve featured quite a few radios using the Si47XX series, which can be made into very tidy receivers indeed. If the 100 mW output power seems a bit low it’s worth remembering that FT8 is a weak signal mode, and given the right propagation conditions the world should be able to hear it despite the meagre output. Some radio amateurs might complain that homebrew radios should only use the most basic of components assembled from first principles, but the obvious answer to that should be that anything which makes radio construction easier is to be welcomed. The charm of this transceiver is that it can be assembled almost in its entirety from modules. It relies on existing work that applies a patch on-the-fly to the Si4735 receiver chip for SSB reception, and another project for the FT8 software. The interface is via a touchscreen display. Its brains are aTeensy 3.6, while the receive side is a Si4735 receiver chip and the transmitter is a Si5351 programmable clock chip driving a Mini-Circuits GVA84 power amplifier with an appropriate filter. Īnd it’s for this mode that has created an easy-to-build transceiver. On of these newer digital modes is FT8 created by the prolific. Using the limitless possibilities of software defined radios has freed digital radio communication from the limits of what could be done with analogue electronics alone, and as a result this is a rare field in which radio amateurs can still be ahead of the technological curve. Probably the most interesting facets of amateur radio in 2021 lie in the realm of digital modes.
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