{"id":13961,"date":"2025-07-06T11:30:15","date_gmt":"2025-07-06T09:30:15","guid":{"rendered":"https:\/\/nolle.engineering\/?post_type=product&p=13961"},"modified":"2026-05-08T12:43:39","modified_gmt":"2026-05-08T10:43:39","slug":"l-band-antenna-wx-hrpt","status":"publish","type":"product","link":"https:\/\/nolle.engineering\/en\/product\/l-band-antenna-wx-hrpt\/","title":{"rendered":"L-Band WX HRPT 1700 MHz"},"content":{"rendered":"

What it does<\/h2>\n

A 10-turn RHCP helix tuned to 1700 MHz. Decodes HRPT (High Resolution Picture Transmission) downlinks from NOAA POES and MetOp weather satellites in LEO when mounted on an el\/az rotor. With an offset dish (3-turn front-end variant), the same tuning also receives the L3 downlink from Russian Elektro-L geostationary weather satellites \u2014 a deployment we run as a public WebSDR.<\/p>\n

Specifications<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
Center frequency<\/td>\n1700 MHz (1690\u20131710 MHz HRPT band)<\/td>\n<\/tr>\n
Polarization<\/td>\nRHCP (default) \u2014 LHCP available on request<\/td>\n<\/tr>\n
Helix turns<\/td>\n10<\/td>\n<\/tr>\n
Connector<\/td>\nN-type<\/td>\n<\/tr>\n
Mount<\/td>\n6 \u00d7 M4 bolts (universal) for el\/az rotor; 40 mm LNB clamp adapter for dish use<\/td>\n<\/tr>\n
Material<\/td>\nPETG, UV-resistant<\/td>\n<\/tr>\n
Color<\/td>\nOrange\/White (default), Custom on request<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Live reception demo<\/h2>\n

The Lab WebSDR<\/a> exposes live downlinks from this antenna. A separate WebSDR feed for Russian Elektro-L3 (geostationary, 76\u00b0E) using a 3-turn front-end on an offset dish is currently offline for maintenance<\/em> \u2014 when restored it goes back into the same WebSDR multi-feed page.<\/p>\n

Typical use cases<\/h2>\n