Search found 494 matches

by g1hbe
Mon Apr 08, 2019 12:25 pm
Forum: General
Topic: Spectrum Noise Floors: Reasonable ?
Replies: 7
Views: 4816

Re: Spectrum Noise Floors: Reasonable ?

Hi Bob and welcome. I'd say your noise levels are fairly typical. Long wires are very prone to local noise, and with every one having their homes crammed with digital electronics these days things are getting worse. One major source of noise which has appeared more recently is VDSL, which appears in...
by g1hbe
Mon Apr 08, 2019 9:47 am
Forum: General
Topic: AM broadcast bands on all frequencies / bands (SDR2/SDRUno)
Replies: 4
Views: 3330

Re: AM broadcast bands on all frequencies / bands (SDR2/SDRUno)

Hi Kerchunk. I have the RSP2 and a couple of big MW BC stations nearby. I use a Wellbrook loop antenna. The only way I can get overload is by turning the RF gain near full (or the RF attenuation to the bottom). Have you checked the setting of this slider? Remember that if it is in 'attenuation' mode...
by g1hbe
Fri Mar 29, 2019 12:07 pm
Forum: SDRuno
Topic: re: having to reset to defaults on sdruno start up
Replies: 17
Views: 9429

Re: re: having to reset to defaults on sdruno start up

Plus - a bit more info on the 'max RF gain on startup' thing. It only does this this if the Hi-z input is selected. It also goes full gain when moving from Ant A to Hi-z.
by g1hbe
Fri Mar 29, 2019 8:31 am
Forum: SDRuno
Topic: re: having to reset to defaults on sdruno start up
Replies: 17
Views: 9429

Re: re: having to reset to defaults on sdruno start up

Thanks Paul. Ye's that's the kind of unfathomable behaviour I'm seeing, along with the occasional selection of 100 kHz step size in narrowband modes if I've come from WFM. I think it must depend on which way the wind is blowing....
by g1hbe
Wed Mar 27, 2019 1:34 pm
Forum: New Users' experiences
Topic: S-METER READING
Replies: 15
Views: 10088

Re: S-METER READING

The only thing you measure is the voltage at the input-plug of the receiver. It doesn't say anything about the signal, antenna-system, cable losses, conditions in the sky, etc. Also, on HF it's 50μV for S9 but on VHF 5μV, so on VHF you should see a different reading. But it's just that, a μV number...
by g1hbe
Mon Mar 25, 2019 9:11 am
Forum: SDR Antennas
Topic: Longwave Antenna Reception For Apartment
Replies: 8
Views: 16257

Re: Longwave Antenna Reception For Apartment

Hi Adam. I had exactly the same problem years ago but a Wellbrook 1530 loop saved my hobby. The noise with outdoor wire antennas had grown over the years and was reaching S9, blocking all but the strongest signals. I tried a remotely-mounted E-field 'probe', but it was just as bad as the wires. So o...
by g1hbe
Sun Mar 24, 2019 1:16 pm
Forum: SDRuno
Topic: re: having to reset to defaults on sdruno start up
Replies: 17
Views: 9429

Re: re: having to reset to defaults on sdruno start up

No Paul - I installed Uno on my other laptop and the 'empty window' doesn't appear on that one. On the old i3, I think I'll uninstall, do a registry cleanup and re-install. If that doesn't clear it I'll just live with it. It's not exactly the end of the world, just an extra click on shut-down.
by g1hbe
Sun Mar 24, 2019 9:00 am
Forum: SDRuno
Topic: re: having to reset to defaults on sdruno start up
Replies: 17
Views: 9429

Re: re: having to reset to defaults on sdruno start up

Thanks for the input Paul. On point 2, I think I'll do a temporary install on my other laptop to see if I get the same problem. The one I routinely use is a skanky old i3 that's had so many bits of doubtful software shoved on it it must be near death. Re 3 (step sizes), the latest one was a 5kHz ste...
by g1hbe
Sat Mar 23, 2019 8:43 pm
Forum: SDRplay related
Topic: HDSDR and RSP1A not working properly after install.
Replies: 12
Views: 7217

Re: HDSDR and RSP1A not working properly after install.

Don't put yourself down, M. That mistake is incredibly common, even among those who regard themselves as 'old hands'. I've lost count of the number of times I've had to point out to some impatient know-all that they are looking for amateur VHF signals on 145 kHz..... :mrgreen: It's easy to get it wr...
by g1hbe
Sat Mar 23, 2019 8:44 am
Forum: SDRuno
Topic: re: having to reset to defaults on sdruno start up
Replies: 17
Views: 9429

Re: re: having to reset to defaults on sdruno start up

The only odd things I've found so far are 1. RF gain all the way to max on startup, causing overloading. I have to reset it to half way every time. 2. There is an 'unused window' left in the taskbar after shutdown which I have to clear manually before next use. 3. When changing modes, sometimes I am...