so ive been using a cheap RTL-SDR v3 dongle for a while now with SDR# and its been fine for VHF/UHF stuff, airband, weather sats etc. but i want to start doing more HF monitoring, like shortwave broadcasters, utility stations, maybe some amateur bands when im not actually on the air. the direct sampling mode on the v3 works okay but its pretty noisy and i feel like im missing stuff.

been looking at the SDRplay RSP1A since its like $110 or so and supposedly has much better dynamic range and a proper frontend for HF. but part of me wonders if thats just marketing or if theres actually a real world difference when youre just sitting there listening to 40m or whatever. anyone actually run both and can tell me if the jump is worth it or should i just throw a better antenna at the RTL and call it a day

running SDRuno or maybe SDR++ either way, windows machine, nothing fancy

the difference is pretty real honestly. i had the same rtl-SDR v3 setup for about a year and the direct sampling mode on HF is workable but the noise floor is noticeably higher and you get a lot of intermod when theres strong signals nearby. broadcast stations bleeding into adjacent stuff was a constant annoyance for me.

switched to the RSP1A and HF just felt cleaner. not like night and day on every band but on 40m and 80m especially where theres a lot going on, the dynamic range improvement shows up. SDRuno works pretty well with it too, though SDR++ also has RSP support now and i actually prefer the interface. the RSP1A also goes down to like 1kHz which is fun for VLF stuff if youre into that, NAVTEX, time stations etc.

that said a better antenna really does matter more than people think. if youre using a random wire or a short whip both devices will still struggle. but assuming your antenna is decent the RSP1A is a meaningful step up for HF work.

honestly i'd say try a spyverter or one of the upconverter boxes with the rtl first before spending $110, you can get one for like 30-40 bucks and it helps a lot with the noise issue on HF. i ran mine that way for a long time and it was totally usable. the RSP1A is better no question but it depends how serious you are about it