The innovative SDRplay RSP and NooElec LNAs plus low-cost antennas have opened the door to new applications and capabilities for hobbyists, students, and amateurs that were previously too expensive for many in the past. NooElec has versions of their LNAs that draw only 30mA to 40mA so they can be powered from the Bias-T supply on the SDRplay RSP. NooElec has come out with some innovative LNAs with built-in filters for the bands needed at very reasonable pricing. Some dramatic improvements in price, performance, and functionality for L-Band LNAs for receiving GOES HRIT/LRIT/GRB and HRPT images have occurred in the past year. The article below describes a comparatively low cost GOES HRIT/LRIT geostationary satellite image receiver: The below article shows use of the same hardware and tracking antenna mount as described in item 2, but used with HRIT/LRIT reception from GOES geostationary satellites: A list of current HRPT capable low earth orbit satellites are provided in the article threads. The same hardware can be reused for HRIT/LRIT reception as well at different L-Band frequencies as controlled by the RSP. With respect to HRPT, the following article describes building a low cost tracker from a Meade telescope mount, plus how to build an exceptional receiving antenna that is light enough to be used with the mount. But you have to read to the end of the threads to get all the information, since it has been updated over time for the latest information. This article describes building an exceptional APT receiving antenna, where to find WXtoIMG and sites discussing key information, how to set up SDRuno and WXtoIMG to communicate for doppler control of the RSP, and gain settings, among other topics. All of the questions that you have asked regarding APT reception and more have been answered in these articles, including Doppler control of the RSP for APT reception. As Mike2459 pointed out, there are a few articles available on the weather satellite image reception topic. My understanding is that SDRplay is planning on plugin support for an upcoming version of SDRuno using a new upcoming API refer to article here.
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