so ive been messing around with an RTL-SDR v3 dongle for about a year now, mostly listening to airband and doing some NOAA weather sat stuff with WXtoImg which has been a blast honestly. but lately ive been wanting to get into HF more seriously — like actually monitoring 40m and 80m, maybe some utility stuff on lower freqs.

the rtl-sdr does ok in direct sampling mode but its pretty noisy and the dynamic range is just not great. i keep reading that the RSP1B is a big step up but its also like 4x the price of a dongle. is it actually that much better for HF or is it more like a marginal thing and id be better off saving for a HackRF or something. i mostly use SDR# right now but ive been playing with SDRangel too which seems more capable but also way more confusing to set up on windows.

anyone actually gone from RTL to RSP and noticed a real difference on HF specifically? not talking about general receive quality, i mean actual usability for lower bands without it being just a wall of noise

yeah the jump from RTL to RSP1B on HF is pretty significant, not gonna sugarcoat it. the direct sampling hack on the v3 is clever but it really is just a hack — you're working around hardware that was never designed for those freqs. the RSP1B has actual front end filtering and the ADC is way better so your dynamic range goes from like 8 bits effective to something actually useful. i noticed right away on 40m that the broadcast splatter was manageable instead of just wrecking everything.

SDRuno takes some getting used to if you're coming from SDR# but once you get the SP panels set up it's actually pretty good. one thing though — if you're going HackRF route that's a transmit-capable device and the receive specs are honestly not as good as the RSP for pure listening. HackRF trades sensitivity for that wide tuning range and TX capability. depends what you want to do with it really.

i went rtl > rsp1a (older version of same thing basically) a few years back and yeah HF was the main reason. 40 and 80 are just way more usable. that said make sure you have a decent antenna because even the best SDR front end cant save you if youre on a crappy wire. i spent way too long blaming receivers when my feedline had a bad connector lol