= NOW 25 WPM = TEXT IS FROM SEPTEMBER 2020 QST PAGE 40 = RANGE. THE RSPDX ALSO ADDS AN LF/VLF FILTER FOR OPERATION BELOW 500 KHZ. THIS SHOULD MAKE THIS DEVICE INTERESTING FOR MEDIUM WAVE AND LONG WAVE DX HUNTERS. ANTENNA PORTS LABELED ANT A AND ANT B ARE SMA FEMALE CONNECTORS AND CAN BE USED FROM 1 KHZ TO 2 GHZ. THE BNC SOCKET FOR THE THIRD ANTENNA PORT ANT C IS FOR 200 MHZ AND BELOW. ALL THREE ANTENNAS ARE SOFTWARE SELECTABLE. SOFTWARE THIS RECEIVER NEEDS A COMPUTER AND SOFTWARE FOR OPERATION. YOU CAN DOWNLOAD THE WINDOWS BASED SDRUNO SOFTWARE SEE FIGURE 1 FROM THE SDRPLAY WEBSITE. THE SOFTWARE IS FREE, AND IT ONLY WORKS WITH THE SDRPLAY PRODUCTS. THE SDRPLAY WEBSITE ALSO OFFERS PLUG INS TO USE THE RSPDX WITH THIRD PARTY SOFTWARE. THERE ARE A NUMBER OF DRIVERS FOR USING VARIOUS RSP MODELS WITH WINDOWS, MACOS, ANDROID, LINUX, AND RASPBERRY PI PLATFORMS. ONE FEATURE I FIND REMARKABLY INTERESTING IS THE SPECTRUM ANALYZER SOFTWARE FOR THE RSP PRODUCTS THAT YOU CAN DOWNLOAD FOR FREE FROM = END OF 25 WPM TEXT = QST DE W1AW <