Thank you to RTL-SDR.COM reader Ernie (NH7L), who wrote in and wanted to share news about the “Mobile-Whip” antenna, an open-source active receive antenna from GitHub user skuep. The design is based on the well-known PA0RDT Mini-Whip, but it is built for portable use. It runs from a single 18650 lithium cell with an onboard USB charger, or from 5V USB, the 4.5V bias tee on the RTL-SDR Blog V4, or a standard 12-15V Mini-Whip bias tee. It uses an ultra-low input capacitance LTC6268 op-amp instead of a JFET, draws about 20 mA, and is only 200 mm long. That makes it small enough to mount direc
https://www.rtl-sdr.com/mobile-whip-a-compact-battery-powered-mini-whip-style-active-hf-antenna-for-handhelds-and-sdrs/
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https://www.rtl-sdr.com/mobile-whip-a-compact-battery-powered-mini-whip-style-active-hf-antenna-for-handhelds-and-sdrs/
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Categories: General [c1]