Search found 494 matches

by g1hbe
Tue May 29, 2018 7:25 am
Forum: SDR Antennas
Topic: External LPF / Attenuation
Replies: 1
Views: 10225

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: 13467

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: 6
Views: 15691

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: 7502

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: 41371

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...
by g1hbe
Mon May 07, 2018 12:08 pm
Forum: New Users' experiences
Topic: RSP1a and BIAS-T
Replies: 8
Views: 29557

Re: RSP1a and BIAS-T

I think there is an over-current trip which turns off the bias-T if more than 100mA is drawn. From the datasheet: 4.7V /100mA Guaranteed. Note : Bias T has an over current protection circuit. Current in excess of 100mA will cause the bias T voltage to disable. Removal of the overcurrent condition an...
by g1hbe
Mon May 07, 2018 11:40 am
Forum: New Users' experiences
Topic: RSP1a and BIAS-T
Replies: 8
Views: 29557

Re: RSP1a and BIAS-T

Yes, I believe there is a button in the 'main' window.
by g1hbe
Sun May 06, 2018 8:33 am
Forum: New Users' experiences
Topic: New Member/User from Scotland.
Replies: 14
Views: 41371

Re: New Member/User from Scotland.

Hi again Steven. If it's anything like our recently-bought HP laptop, it will be loaded with all manner of 'helpful' (NOT) applications, some of which will run from start-up. Stuff like performance monitors, virus sweepers and update checkers. A pain in the neck. It's worth disabling these and dragg...
by g1hbe
Sat May 05, 2018 7:49 am
Forum: New Users' experiences
Topic: New Member/User from Scotland.
Replies: 14
Views: 41371

Re: New Member/User from Scotland.

Welcome! Audio hiccups and pausing are normally down to a lack of power in the PC. My old P6200 laptop would get its pants in a knot if I went above about 6 MHz sample rate, but my newer i5 is happy all the way up. Or it could be that there are several background processes running (things like virus...
by g1hbe
Fri May 04, 2018 5:14 pm
Forum: SDRplay related
Topic: RSP2PRO vs RSP1a
Replies: 2
Views: 8863

Re: RSP2PRO vs RSP1a

The most obvious difference is the three selectable antenna inputs on the RSP2. Two SMA types which are best for VHF and the high-z terminal block which is optimised for 0 - 30 MHz. The RSP1a has only one input but the input filters and signal routing has been changed to make it suitable for all fre...