Search found 226 matches

by Mike2459
Sun Apr 21, 2019 2:58 am
Forum: General
Topic: SDRUno 1.31 with Windows 7 issue
Replies: 5
Views: 130

Re: SDRUno 1.31 with Windows 7 issue

Your CPU usage seems outrageously high. Try disabling some startup programs that you may not really need. Disable some of Win 7's eyecandy (visual effects), it's cute but there's a performance price associated with it. This video shows how to disable visual effects and some other tips. You can alway...
by Mike2459
Sat Apr 20, 2019 8:54 pm
Forum: SDRuno
Topic: Erratic Audio
Replies: 6
Views: 482

Re: Erratic Audio

A dead CMOS battery is usually accompanied by a warning at startup - "CMOS checksum error" or something similar. The time will usually be reset to some date far in the past like - Jan 1, 1999. More importantly the CMOS battery also provides standby power for the BIOS memory. If the battery...
by Mike2459
Mon Apr 15, 2019 7:08 am
Forum: Rig Control
Topic: How do I set Bandwidth
Replies: 3
Views: 151

Re: How do I set Bandwidth

You may be in Low_IF mode. There is only one sample rate available (2 Mhz). Switch to Zero-IF Mode and there will be multiple sample rates available. You'll find the setting in the Main panel under 'IF Mode'. If the box to the right reads 'LIF' you are in Low-IF mode. Click on 'LIF', it should chang...
by Mike2459
Sat Apr 13, 2019 1:02 am
Forum: SDRuno
Topic: Left Mouse Click: All Disappear & a "0" in Right Hand Space ?
Replies: 2
Views: 160

Re: Left Mouse Click: All Disappear & a "0" in Right Hand Space ?

See page 20 of the SDRuno User Manual.
by Mike2459
Thu Apr 11, 2019 6:28 am
Forum: SDRuno
Topic: Erratic Audio
Replies: 6
Views: 482

Re: Erratic Audio

Try the newest version of SDRUno (1.31) if that doesn't fix it then check this stuff: 1) Did you select "Listen to this Device" in any of the Windows sound settings? It can cause feedback if you do. 2) If you are using Windows 10 and Uninstall a program or driver and Windows prompts you to...
by Mike2459
Wed Apr 10, 2019 5:06 pm
Forum: SDRuno
Topic: Decimation defaults to 1.
Replies: 4
Views: 359

Re: Decimation defaults to 1.

Seems like Larry, Moe & Curly have done it again :lol:
by Mike2459
Tue Apr 09, 2019 4:52 am
Forum: SDRuno
Topic: RX Output device - make the choice more immediate
Replies: 4
Views: 312

Re: RX Output device - make the choice more immediate

Isn't this a function of the audio device (the soundcard)? I'm sure there are high quality professional level sound cards that can do this.
by Mike2459
Tue Apr 09, 2019 1:43 am
Forum: General
Topic: Upper limit for signal strength measurements?
Replies: 3
Views: 259

Re: Upper limit for signal strength measurements?

I'm just speculating here but I think the accuracy can be maintained until the onset of ADC Overload.
by Mike2459
Tue Apr 09, 2019 1:23 am
Forum: General
Topic: Spectrum Noise Floors: Reasonable ?
Replies: 7
Views: 309

Re: Spectrum Noise Floors: Reasonable ?

Above Red Line: RF Isolation transformer in circuit:
Below Red line:Ground loop created by bypassing ground around RF isolation transformer:

Ground_ Loop.jpg
Ground_ Loop.jpg (410.9 KiB) Viewed 244 times


The horizontal streaks are due to distant thunderstorm activity. Primary noise source, among others, is the PC's SMPS

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