Free SWL and ham software

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Here is a nice list of software utilities for the shortwave listener and ham radio operators Most of this free software for amateur radio or shortwave runs on Windows platforms. RFSim99 – Free RF Design Software AppCAD – Free RF Design Tool WinSmith – Smith Chart software (for Windows 32-bit) TX-line – Transmission Line Calculator … Read more

Multiband Shortwave Antenna – Works Great!

New Multiband Shortwave Antenna

I just put up this new shortwave antenna to replace the unimpressive Bonito antenna I had. This random wire antenna is performing really well. See for yourself! This is a multiband receiving antenna and is homemade. Often referred to as Long Wire Balun, the WR-LWA-0130 adapter is used to match the impedance of a long … Read more

Antenna Reciprocity

Antenna Reciprocity

Reciprocity is one of the most useful (and fortunate) properties of antennas. Reciprocity states that the receive and transmit properties of an antenna are identical. Hence, antennas do not have distinct transmit and receive radiation patterns – if you know the radiation pattern in the transmit mode then you also know the pattern in the … Read more