- Rust 99%
- Nix 1%
|
|
||
|---|---|---|
| dowser_rf | git commit -m "gauss elim" | |
| .envrc | whatever man | |
| .gitignore | whatever man | |
| Cargo.lock | whatever man | |
| Cargo.toml | whatever man | |
| devenv.lock | whatever man | |
| devenv.nix | whatever man | |
| devenv.yaml | whatever man | |
| README.md | yeah | |
todo
hf only no vhf for a long while
Station Metadata Location Identity Equipment Antenna Feed Line Transmitter Reciever
Signal - type ALL signals will have identity, frequency, strength, mode, location Identity - ie call even if not possible Frequency - ie band Strength - changes as it propagates from transmitter -> line -> antenna -> skywave/etc -> antenna -> line -> reciever represents total gain (loss) of system (dB) attached is initial power outputted by transmitter (not public unless included by mode) Originating Location (not public unless included in payload) includes angle from source to reciever Mode Carrier - technically conveys no information but location CW Voice Payload Message Location if in mode
Attachable to transmission line: Loads Dipole (done) DummyLoad Sources - 50ohm impedance typ ie what is z_s on transmission line AntennaAnalyzer reports impedance + swr for a frequency attached directly to antenna or to transmission line far too low power to be worth propagating, simply reads the antenna and transmission line match and presents SWR and impedance Transmitter places a signal to be propagated (with a power level attached) -> travels across transmission line (losses) -> radiated by antenna (directivity) -> recieved elsewhere Reciever not a signal source, but it is placed here to attach to the line recieves signal propagated on antenna -> losses/gain by antenna directivity at azumith/maybe elevation -> loss by transmission line -> reciever "power" ie sensitivity has to deal with noise levels present in environment (ie from atmospheric noise or local environmental rfi) strong signals nearby if poor selectivity perhaps (ie broadcast tower 3 km away) Transciever combo of two - later on
Propagation at first, simple distance and angle will be used to calculate the recieved power free space path loss + directional gain + polarization mismatch? noise present as well recievers will have a minimum snr for mode? later on band simulations maybe + final propagation model if possible