Search found 423 matches

by g1hbe
Mon Feb 04, 2019 10:19 pm
Forum: SDRuno
Topic: Laptop Settings for SDRuno
Replies: 2
Views: 891

Re: Laptop Settings for SDRuno

I've used several laptops, including an elderly P6200, an i3 and an i5, all clocked between 2.1 and 2.4 GHz and from 1 to 8 GB of memory. All have 15 inch screens and standard Intel HD 5500-type onboard graphics. All work fine, although the old P6200 could stutter a bit above 6 MHz b/w. The rest of ...
by g1hbe
Mon Feb 04, 2019 4:36 pm
Forum: Code Corner
Topic: AM modulation monitor software
Replies: 3
Views: 675

Re: AM modulation monitor software

Ah, got it.
by g1hbe
Mon Feb 04, 2019 9:15 am
Forum: Code Corner
Topic: AM modulation monitor software
Replies: 3
Views: 675

Re: AM modulation monitor software

Hi Mark. I'm a bit confused - what does this do that an SDR cannot do itself? Is it not just receiving off-air signals and displaying the spectrum? Sorry if I've missed something obvious (it wouldn't be the first time...).
by g1hbe
Sat Feb 02, 2019 10:53 am
Forum: SDRuno
Topic: RSP error (tune) SDRuno will terminate
Replies: 7
Views: 3518

Re: RSP error (tune) SDRuno will terminate

Is this the crash that happens when you tune through certain band edges? I seem to recall it only happens if you have the 'Gain Reduction' slider set to 'RF Gain' . It's something like that, but I don't recall exactly.
by g1hbe
Thu Jan 31, 2019 1:04 pm
Forum: SDR Antennas
Topic: A query regarding eathing (grounding)
Replies: 5
Views: 889

Re: A query regarding eathing (grounding)

Oh no. If you ask a hundred people you'll get a hundred conflicting opinions. My experiences suggest that these days, with all manner of devices dumping noise onto the mains and into the earth system, there is no hard and fast rule. I've found that on some bands an earth can make the noise less, on ...
by g1hbe
Tue Jan 29, 2019 9:44 pm
Forum: SDR Antennas
Topic: Intefearance reducing/anti jamming antenna
Replies: 4
Views: 743

Re: Intefearance reducing/anti jamming antenna

I'd like to see an 'equivalent circuit' to that, as I can't work out what is meant to be happening. It looks like (perhaps) it's a version of the QRM eliminator idea, where a null is introduced into the radiation pattern of the radio's antenna by combining the signal from the other antenna in antiph...
by g1hbe
Mon Jan 28, 2019 9:14 am
Forum: SDR Antennas
Topic: Antenna for LW
Replies: 11
Views: 1978

Re: Antenna for LW

My LW/LF listening is spoiled by high noise levels from local gadgets, and the only cure was to get a loop. I use the Wellbrook 1530 but there are other types. If you are handy you can make your own using the well-known PA1M circuit. If you want it to go down to VLF, use a mix 73 ferrite transformer...
by g1hbe
Mon Jan 28, 2019 8:53 am
Forum: SDRplay related
Topic: Bug Report SDRUno 1.23/RSP2
Replies: 1
Views: 481

Re: Bug Report SDRUno 1.23/RSP2

AFAIK, this is a known problem which will be corrected soon.
by g1hbe
Sun Jan 27, 2019 8:11 pm
Forum: General
Topic: VHF/UHF Reception Problems
Replies: 6
Views: 1124

Re: VHF/UHF Reception Problems

The most common cause of 'no reception' is confusion over MHz or kHz frequency entry. Make sure when you enter the airband frequency you are entering in MHz by pressing the blue MHz key (on the on-screen keyboard) or adding the extra digits in kHz. You'd be surprised just how often this error comes ...
by g1hbe
Sat Jan 26, 2019 8:24 am
Forum: New Users' experiences
Topic: New user here
Replies: 16
Views: 2597

Re: New user here

Same here Mike. Older versions of SDRUno used to get in a tizz over antenna switching, but it's been sorted out for quite a while now. Very odd. I know there used to be a problem if you accidentally tuned below 0Hz as well, but that one was weeded out a while back too.

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