Search found 329 matches

by g1hbe
Thu Jun 14, 2018 11:47 am
Forum: Spectrum Analysis
Topic: Feedback for version 0.9a here
Replies: 117
Views: 6815

Re: Feedback for version 0.9a here

Thanks for a very interesting piece of software. On a rather cursory look at it yesterday I noticed some thing odd. I normally use a Signal Hound SA-44b analyser, so I did a comparison with that. With the CF set to 3.0 MHz and a signal on 3.01 MHz at -40dBm, the SH shows a peak as expected at 3.01 M...
by g1hbe
Fri Jun 01, 2018 10:07 pm
Forum: SDRuno
Topic: How can I set the zoom on Main SP
Replies: 9
Views: 1830

Re: How can I set the zoom on Main SP

It sounds like you have an antenna or coax problem - are you sure all connections are good (no shorts etc)? Check also the sma plug to make sure it has a centre pin. The only other thing that may cause poor reception is incorrect setting of the gain slider. If you are using the RSP2, check you have ...
by g1hbe
Thu May 31, 2018 6:01 pm
Forum: SDRuno
Topic: How can I set the zoom on Main SP
Replies: 9
Views: 1830

Re: How can I set the zoom on Main SP

To see max bandwidth, select 10 MHz sample rate and decimation 1. This will give you the RSP's maximum bandwidth of 10 MHz. Both these settings are found in the small MAIN window. Then just check that you are zoomed right out by clicking the < ZOOM button at the bottom of the big MAIN SP window. You...
by g1hbe
Wed May 30, 2018 1:37 pm
Forum: SDR Antennas
Topic: RSP2 with ALA1530 Antenna
Replies: 1
Views: 382

Re: RSP2 with ALA1530 Antenna

Hi. I have had a 1530 and then the 1530LN for years and I swear by them, but connecting the 50-ohm coax output from the interface box to the green connection block causes much confusion among enthusiasts. The first thing to realise is that a mismatch of 50r to 1k is not that serious and any loss inc...
by g1hbe
Tue May 29, 2018 11:15 pm
Forum: SDRplay related
Topic: When will we see support for 14 bits in RSP2?
Replies: 1
Views: 498

Re: When will we see support for 14 bits in RSP2?

Don't quote me, but I think that in order to be able to free-up the extra bits, a small hardware change was necessary.
by g1hbe
Tue May 29, 2018 7:25 am
Forum: SDR Antennas
Topic: External LPF / Attenuation
Replies: 1
Views: 326

Re: External LPF / Attenuation

I've never had to put attenuation on the Hi-z port as I find the range of the RF gain slider is plenty enough. A set of filters is a good idea. I use a LPF to roll off everything above 500KHz when I'm looking for NDB's (200 to 500 KHz) and another LPF which rolls off at 100 KHz when I'm looking for ...
by g1hbe
Sun May 27, 2018 10:05 pm
Forum: SDRuno
Topic: Corruption of SAM SB audio
Replies: 5
Views: 486

Re: Corruption of SAM SB audio

What's actually happening - ie what does it sound like? I notice from your screenshot that your noise level is high and I can't see the level of the incoming signal as it is hidden behind the SAM box. However I think the SNR is very poor, possibly 3dB? I think under those conditions it would be diff...
by g1hbe
Sat May 26, 2018 5:08 pm
Forum: SDRuno
Topic: SDRuno Software Issue
Replies: 2
Views: 313

Re: SDRuno Software Issue

This sounds like the bug that has the default step for AM set at 100kHz. It's due to be corrected soon, I think. You can select a step of your choice by right clicking in the main frequency display area and selecting from the menu.
by g1hbe
Sun May 13, 2018 4:53 pm
Forum: General
Topic: RSP1A sample rate
Replies: 2
Views: 454

Re: RSP1A sample rate

I don't think you can, you have to choose from the values in the menu.
by g1hbe
Wed May 09, 2018 10:24 am
Forum: New Users' experiences
Topic: New Member/User from Scotland.
Replies: 14
Views: 1594

Re: New Member/User from Scotland.

Steven - my HP laptop is an i5 clocked at 2.4 GHz with 4 Gigs of memory. Running my RSP2 with one RX enabled at 2MHz b/w, it hovers around SYS17% and SDR 12% CPU load. I can leave Uno running while I surf the net without problem. Even at 8 MHz bw it seems fine. It sure sounds like something is a bit...

Go to advanced search