Search found 216 matches

by g1hbe
Tue May 09, 2017 6:17 pm
Forum: SDRuno
Topic: SDRuno verison
Replies: 2
Views: 876

Re: SDRuno verison

Just click on the OPT button in the small 'main' window and select 'About'. It'll tell you the version there.
by g1hbe
Thu May 04, 2017 11:16 pm
Forum: New Users' experiences
Topic: Looking pretty good here
Replies: 2
Views: 689

Re: Looking pretty good here

The hardware and Uno software are indeed very good, but like all SDR's that boast a wide spectrum display, they will show images and other spurii. Narrow front-end filtering will get rid of the unwanted responses, but of course this will stop you using the much-trumpeted 10 MHz b/w. I find the SDR2 ...
by g1hbe
Wed May 03, 2017 8:23 am
Forum: SDR Antennas
Topic: Random wire questions
Replies: 10
Views: 2450

Re: Random wire questions

Yes, link N & G and take the coax outer to it. To minimise noise, try earthing the far end of the coax outer or the receiver end, or both. Noise can enter your system via several ways and there seems to be no hard and fast rule in practice. If your coax is more than about 10m, then a pair of 9:1...
by g1hbe
Tue May 02, 2017 8:18 am
Forum: SDR Antennas
Topic: Random wire questions
Replies: 10
Views: 2450

Re: Random wire questions

Hi d. That random wire is perfectly good, but you may find it picks up lots of noise from your house and those of your neighbours. It's not a good idea to bring a receiving antenna directly into your home for this reason. Much better to use a length of co-ax from the Hiz port to a point in the garde...
by g1hbe
Fri Apr 28, 2017 8:11 am
Forum: SDRuno
Topic: Just downloaded SDR UNO 1.13
Replies: 10
Views: 1835

Re: Just downloaded SDR UNO 1.13

It sounds like you were zoomed in, forcing the LO off the screen.
by g1hbe
Thu Apr 27, 2017 11:00 pm
Forum: SDRuno
Topic: Just downloaded SDR UNO 1.13
Replies: 10
Views: 1835

Re: Just downloaded SDR UNO 1.13

There should be no need to set the LO. Just set the required RX frequency by hitting the space bar and typing in the frequency in KHz followed by ENTER. The LO freq will go wherever it is necessary. Then just de-tune a few 10's of KHz and re-click to avoid the central spike. Just ignore the LO.
by g1hbe
Thu Apr 27, 2017 10:54 pm
Forum: General
Topic: 3rd party Metal Case for SDR1
Replies: 3
Views: 930

Re: 3rd party Metal Case for SDR1

I can't see it doing much at all unless you have a powerful source of QRM very close, such as using your RSP taped to your laptop or plonked on top of a switch-mode PSU.
by g1hbe
Fri Apr 21, 2017 7:56 pm
Forum: SDRuno
Topic: What's This Minor Audio Distortion From?
Replies: 1
Views: 618

Re: What's This Minor Audio Distortion From?

I'd say that was a transmission fault, Noel. It seems to take the same form every time, so it's unlikely to be in your setup.
by g1hbe
Fri Apr 14, 2017 7:41 pm
Forum: SDRuno
Topic: New user question - please see my screenshot
Replies: 9
Views: 1871

Re: New user question - please see my screenshot

Stephen - you mention a longwire antenna connected to the Hi-z input. Is this a longwire *directly* into the RX? If so, I'm sure you know that these days bringing a high-impedance wire into your shack is a cast-iron way of picking up every bit of noise in your own house and your neighbours. A coax f...
by g1hbe
Thu Apr 13, 2017 11:13 pm
Forum: SDRuno
Topic: New user question - please see my screenshot
Replies: 9
Views: 1871

Re: New user question - please see my screenshot

Looks like you have a strong local source of interference, maybe from a switch-mode psu or a plasma TV. It may even be from your own home/shack. What antenna system are you using?

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