November 2025

Specifications of HamGeek AD9361 RF 70MHz-6GHz SDR Software Defined Radio USB3.0 Compatible with ETTUS USRP B210

From https://www.hgeek.com/products/hamgeek-ad9361-rf-70mhz-6ghz-sdr-software-defined-radio-usb3-0-compatible-with-ettus-usrp-b210 This gives an idea of specifications of USRP B210 systems Description:The USRP B210 provides a fully integrated, single-board, Universal Software Radio Peripheral (USRP™) platform with continuous frequency coverage…

Can orthogonal dual monopoles reduce signal strength in a cantenna? How is cross-polarisation measured?

Extract from SARA Mailing List 20-21/11/2025. https://www.astronomy.me.uk/wp-content/uploads/2025/11/Can-orthogonal-dual-monopoles-reduce-cantenna-signal-strength-Measuring-cross-polarisation-SARA-Mailing-List-20-211125.docx https://www.astronomy.me.uk/wp-content/uploads/2025/11/Can-orthogonal-dual-monopoles-reduce-cantenna-signal-strength-Measuring-cross-polarisation-SARA-Mailing-List-20-211125.pdf MESSAGES BELOW IN REVERSE CHRONOLOGICAL ORDER: From: ‘b alex pettit jr’ via Society of Amateur Radio Astronomers <sara-list@googlegroups.com>Sent: 21 November 2025 22:38.…