Search found 329 matches

by g1hbe
Thu May 18, 2017 10:53 pm
Forum: SDR Antennas
Topic: Antenna ports
Replies: 4
Views: 2979

Re: Antenna ports

I suppose antenna B input is intended for VHF and above, where masthead pre-amps are more frequently used to overcome coax losses. Most of us would not use an antenna amp on HF.
by g1hbe
Thu May 18, 2017 5:05 pm
Forum: SDRuno
Topic: How to Enter 1090mhz
Replies: 3
Views: 1813

Re: How to Enter 1090mhz

Just remember that SDRUno uses KHz entry, so add three zeros on the end. I wish they'd make it MHz or KHz, and give us a key for each. My Signal Hound analyser does this - I just type 105 k or 220 m and it takes me there.
by g1hbe
Fri May 12, 2017 11:05 pm
Forum: General
Topic: Original SDRPlay
Replies: 6
Views: 2843

Re: Original SDRPlay

I have one of the old blue & white ones and IIRC the case just cracks apart with a bit of persuasion.
by g1hbe
Tue May 09, 2017 6:17 pm
Forum: SDRuno
Topic: SDRuno verison
Replies: 2
Views: 1683

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: 1871

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: 6073

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: 6073

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: 4557

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: 4557

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: 2290

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.

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