Search found 422 matches

by g1hbe
Fri Jan 25, 2019 4:09 pm
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2562

Re: New user here

I think that says RSP error (tune). I've never seen that at all! I'd go to Support and raise a query.
by g1hbe
Fri Jan 25, 2019 10:30 am
Forum: General
Topic: Gain Reduces When Centering Signals In HF
Replies: 3
Views: 1060

Re: Gain Reduces When Centering Signals In HF

By moving the signal to the centre, you are putting the received signal on the same frequency as the Local Oscillator. You can confirm this by looking at the on-screen display in the top right of the big spectrum display. If the VFO frequency and the LO frequency are the same, that's the problem. Th...
by g1hbe
Fri Jan 25, 2019 8:55 am
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2562

Re: New user here

Then you need to investigate what's going on. SDRUno runs smoothly even on my old P6200. Why not join the Facebook group and ask for help there? There are people who really know their stuff over there. Or you could open a ticket on this site.
by g1hbe
Thu Jan 24, 2019 11:36 pm
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2562

Re: New user here

No, SDRUno has no bugs of that nature. It runs smoothly, but if your PC is low-powered or you have many applications running you may see this kind of thing.
by g1hbe
Thu Jan 24, 2019 2:17 pm
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2562

Re: New user here

Yes, SDRUno has a steep learning curve and some functions are not intuitive, but it's very good once you get the hang of it. I don't use anything else now. Sadly the SDRPlay receivers cannot be used with SDR# now, as there is a legal problem. If you can find an older version of SDR# (1360 or before)...
by g1hbe
Thu Jan 24, 2019 11:52 am
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2562

Re: New user here

Pre-selection is something you do externally to the receiver with an add-on unit. it is basically a tunable device which allows only a certain band of frequencies through to the RX, keeping out unwanted ones. This helps get rid of 'ghost' signals and reduces the possibility of intermod. Companies li...
by g1hbe
Wed Jan 23, 2019 11:37 pm
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2562

Re: New user here

Hi and welcome. I too started with an RTL-type stick several years ago, and I saw a massive difference when I moved first to an RSP1 and then an RSP2. The RSP's have a much greater dynamic range of over 70dB compared to about 48dB for the stick. Under some conditions this does not make a lot of diff...
by g1hbe
Wed Jan 23, 2019 9:05 am
Forum: New Users' experiences
Topic: Using an LNA
Replies: 2
Views: 878

Re: Using an LNA

Hi Jim. Pre-amps always give their best performance when connected close to the antenna. The further along the feeder to towards the RX, the less good they do. It's easy to fry a pre-amp by putting too much RF on the input, and in your case there would be a very large amount present because of the p...
by g1hbe
Sun Jan 20, 2019 9:47 am
Forum: SDRplay related
Topic: Binaural Reception ?
Replies: 11
Views: 2191

Re: Binaural Reception ?

The SDR2 software that comes with the Colibri DDC receiver has binaural mode. It's fascinating. On a quiet band, the sound is highly focussed 'between the ears', but on a busy band with lots of adjacent signals it's like standing in the middle of a road with traffic passing on both sides.
by g1hbe
Sat Jan 19, 2019 9:18 am
Forum: SDR Antennas
Topic: Impedance matching - RSP1A
Replies: 2
Views: 886

Re: Impedance matching - RSP1A

I think hands-on trial-and-error testing is probably best if you don't know the characteristics of the ferrite. A 5/12 (2.5) turns ratio will give an impedance ratio of 6.25 which ends up with 48 ohms at the RSP, assuming you have the transformer the right way around. So that's bang on, considering ...

Go to advanced search