I've been using this for the time being. I stopped using the little extension cable it comes with in favor for a bundle of RG6 which, despite being longer, actually improved my signal strength by a few dB.
I have it stuck to my window in various arrangements in some attempt to tune it to a particular range. heard a guy on a ham radio once but dunno if the local police and fire department are unencrypted and analog or not. haven't found any police chatter yet but also not sure if it's because of the antenna or not. might need some filters and an amp if not close to a station.
This is the atenna I bought for the SDR
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You'll probably just have to buy the entire thing:
https://www.amazon.com/RTL-SDR-Blog-Multipurpose-Dipole-Antenna/dp/B075445JDF
Those lines are an overlay placed by WxToImg, they aren't sent from the sat. What are you using now for an antenna? I use the dipole set that RTL-SDR blog sells, I bought it as part of the SDR kit, but they sell it separately as well. https://www.amazon.com/RTL-SDR-Blog-Multipurpose-Dipole-Antenna/dp/B075445JDF/
To set that kind of antenna up, put the long antennas in, extend each to 53cm from the center, make a V-shape with a separation of approx. 120 degrees. If you aren't sure, the tips of each end of the dipole should be a little over 91cm apart. Face it so the "V" is north-south. I set mine on top of a cardboard box on top of my car. That got me some decent images even before adding an FM-blocker and inline amplifier (both RTL-SDR blog branded).
Make sure you run the "Update Keplers" in WxToImg before processing your audio. If you don't the map overlay it makes will be wrong and not make any sense.
What about if I try it with the large dipoles from the RTL-SDR Blog antenna kit?