Search found 286 matches

by g1hbe
Thu Dec 01, 2016 11:27 am
Forum: General
Topic: Newbie coming to the party!!!
Replies: 8
Views: 4353

Re: Newbie coming to the party!!!

Hi John. I love loops. Tuned ones are nice to twiddle but the constant re-tuning as you move from band to band can get tiresome. Wideband ones are more convenient but need an amplifier as the loop produces a lower signal than a tuned one(I use a Wellbrook loop). When I was homebrewing loops, I found...
by g1hbe
Wed Nov 30, 2016 9:34 am
Forum: SDRplay related
Topic: Blocks & Schematics?
Replies: 3
Views: 1884

Blocks & Schematics?

The block diagram and cct diagrams of the RSP-1 were published and I printed them out and filed them with the manual. As a retired electronics engineer I like to have these things. Are there any similar documents for the RSP-2? I'd love to see the changes to the front end filtering, antenna switchin...
by g1hbe
Tue Nov 29, 2016 11:01 pm
Forum: SDRuno
Topic: SDRUno setup with RSP2
Replies: 2
Views: 1447

Re: SDRUno setup with RSP2

Hi Larry. It's hard to think what may be happening, but a common mistake is to use 'reverse' SMA plugs. These look like normal plugs but they don't have a pin. Using these causes zero signal on HF and weak signals on VHF/UHF. This has caught out a number of people. Also make sure the AGC is ON (set ...
by g1hbe
Fri Nov 25, 2016 1:31 am
Forum: General
Topic: The new SDRPlay: RSP2
Replies: 15
Views: 10583

Re: The new SDRPlay: RSP2

I think it should be made clear that the A and B antenna ports are NOT suitable for VLF (sub 100 KHz). I've just set my new RSP2 up, and after a few tests it is obvious that as the frequency decreases, the sensitivity via these ports falls away steeply and if the gain is increased you just get more ...
by g1hbe
Thu Nov 24, 2016 4:27 pm
Forum: SDRplay related
Topic: Proposed upgrades to RSP1 no cancelled ??
Replies: 14
Views: 8921

Re: Proposed upgrades to RSP1 no cancelled ??

Hm, I would say most of the wishes for the RSP 1 have been recognized and the result is the RSP2. Only thing I don't like with the RSP2 is the high impedance antenna input for VLF and LF. I am using an active antenna there which has a 50 Ohms output. So the recent buyers of the RSP1 have funded the...
by g1hbe
Wed Nov 23, 2016 12:16 am
Forum: General
Topic: The new SDRPlay: RSP2
Replies: 15
Views: 10583

Re: The new SDRPlay: RSP2

It's a shame that the MW notch is not operative on the hi-z input. I do quite a lot of listening in the sub-500KHz area and MW stations do cause images and stuff in this part of the spectrum. I've still ordered one though. :D I'll just knock up another LPF.
by g1hbe
Sun Nov 20, 2016 11:32 am
Forum: SDR Antennas
Topic: TV Rabbit Ears Works Well
Replies: 4
Views: 5808

Re: TV Rabbit Ears Works Well

I took a 'rabbit ears' TV aerial with me on holiday, along with my laptop and my then-current toy the FunCubeDongle Pro+. I was into UHF satellites at the time and if I set the lengths of the ears correctly (one quarter wave each), reception of the 250 MHz sats was very good. At full length they wer...
by g1hbe
Thu Nov 17, 2016 4:37 pm
Forum: New Users' experiences
Topic: Impossible To Install
Replies: 10
Views: 6181

Re: Impossible To Install

Odd. I find SDRUno the easiest I've ever tried. Just download and install and it works - no extra drivers or EXTIO files, just so simple. And I speak as someone who always falls victim to any and every installation bug out there....
by g1hbe
Fri Nov 11, 2016 2:38 pm
Forum: General
Topic: Newbie coming to the party!!!
Replies: 8
Views: 4353

Re: Newbie coming to the party!!!

Welcome aboard. I'm sure you'll be impressed once you've got used to the various features. As for your aerial, is it tuned or wideband? If it's wideband you may see various images or 'ghost' signals appearing where they shouldn't be. A tuned loop would reject these, but a wideband one will let every...
by g1hbe
Tue Nov 08, 2016 10:33 pm
Forum: SDRuno
Topic: LNA for SW and MW?
Replies: 2
Views: 1405

Re: LNA for SW and MW?

Hi HB There's an additional LNA above 60 MHz, but there is a switchable LNA on the tuner chip that works on LF/MF/HF. Whether it benefits reception probably depends on signal level and your local noise level. I've just had a fiddle around and it is of no use on MW as signal levels are high anyway. O...

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