Search found 494 matches

by g1hbe
Thu Feb 01, 2018 3:26 pm
Forum: SDRuno
Topic: PMR 446 Mhz
Replies: 4
Views: 14521

Re: PMR 446 Mhz

That's strange - I find my RSP2 very sensitive on 446 and I hear lots of activity. Those spikes don't look right though - does your USB lead have ferrites on both ends? Try re-arranging your leads to see if you can get rid of that noise. Reduce that 'gain reduction' setting as well, see if signals e...
by g1hbe
Sat Jan 27, 2018 12:01 am
Forum: SDRuno
Topic: frequency selection glitch in 1.22
Replies: 10
Views: 25951

Re: frequency selection glitch in 1.22

I've found that the step size on USB is set to 100KHz randomly. I'm not sure what causes it.
by g1hbe
Wed Jan 24, 2018 2:40 pm
Forum: General
Topic: MW Breakthrough
Replies: 12
Views: 29113

Re: MW Breakthrough

Wow Gazzman, I'd never heard of the Wellbrook 1010. It seems to be basically similar to the 1530 but optimised for lower frequencies. It probably performs like the 1530 as well, as I find my 1530 gets a bit wooden above 10 MHz and works best at low frequencies. I thought I lived in a challenging RF ...
by g1hbe
Wed Jan 24, 2018 10:42 am
Forum: General
Topic: MW Breakthrough
Replies: 12
Views: 29113

Re: MW Breakthrough

Great to see a positive outlook, Gazzman. Yes, the ferrite rod antennas in your portables are basically loops, so they do reject noise to a certain extent. but they are very small loops so as you say they don't pick up very weak sigs like a big loop does. Like Paul, I have built loops using plastic ...
by g1hbe
Tue Jan 23, 2018 10:57 pm
Forum: General
Topic: MW Breakthrough
Replies: 12
Views: 29113

Re: MW Breakthrough

Gazzman. Sounds like you have major local noise problems which can really complicate matters. I am in the same boat but much less severe. Trying any type of wire antenna (even well away from the house and fed with coax) just produces noise. The Wellbrook loop mounted at gutter height at the end of t...
by g1hbe
Tue Jan 23, 2018 7:26 pm
Forum: General
Topic: MW Breakthrough
Replies: 12
Views: 29113

Re: MW Breakthrough

Hi Gazzman. First of all, welcome to our happy band. The RSP's are fine receivers, but they need a certain amount of care to get the best out of them. First of all, the two SMA inputs are really not suitable if you have big signals in your area. They have a lot more internal gain and are noisier on ...
by g1hbe
Sun Jan 21, 2018 9:44 am
Forum: General
Topic: Just Brought a SDR 2 - Need some advice
Replies: 1
Views: 5621

Re: Just Brought a SDR 2 - Need some advice

Hi Jon. I find SDRUno runs fine on my shack laptop, which is an i5/2.4 Ghz/4 GB machine. However, I don't use more than one VRX at a time and I never use a b/w of more than 8 MHz. I think you'll need a more powerful machine if you want to use full b/w and multiple VRX's. I can even run it on my old ...
by g1hbe
Sun Jan 21, 2018 1:03 am
Forum: SDRuno
Topic: SDRuno 1.22 Released
Replies: 22
Views: 69350

Re: SDRuno 1.22 Released

For 3) Try page 19 0f the user manual.
by g1hbe
Sat Jan 20, 2018 11:20 am
Forum: SDR Antennas
Topic: RF Preamp
Replies: 2
Views: 14064

Re: RF Preamp

You shouldn't need a pre-amp on HF at all, as reception is limited by external noise. On VHF and above, you may need one if you are looking for very weak sigs like satellites etc, but the amplifier should preferably tuned to the frequency of interest (not wideband) or you can get overload and interm...
by g1hbe
Thu Jan 18, 2018 9:21 am
Forum: SDRuno
Topic: RSP error (tune) SDRuno will terminate
Replies: 7
Views: 21134

Re: RSP error (tune) SDRuno will terminate

That's a strange one. I'm sure the team will be able to help, but as a first approach I'd do a reset (OPT menu/reset to default) to see if that clears it.