Search found 136 matches

by 13dka
Mon Nov 27, 2017 5:10 pm
Forum: SDR Antennas
Topic: Why you should avoid RG-58
Replies: 6
Views: 648

Re: Why you should avoid RG-58

What about lan cable? Any experience in that? I happened to read something about twisted pair for rx antenna feed. No experience with that, sorry. Since I use the RSP on UHF too (with the same coax and often even with the same dipole), I'd fear the increased loss, besides practical considerations (...
by 13dka
Mon Nov 27, 2017 4:47 pm
Forum: SDR Antennas
Topic: Why you should avoid RG-58
Replies: 6
Views: 648

Re: Why you should avoid RG-58

Good shielding of the coax cable is only one small part of the story. Well, I didn't mean to write a book here. ;) I just felt like elaborating on why exactly RG-58 is bad m-kay, because it came up in some other thread. In most cases sheat waves on the coax shielding are more evil. The only remedy ...
by 13dka
Mon Nov 27, 2017 6:10 am
Forum: SDR Antennas
Topic: Why you should avoid RG-58
Replies: 6
Views: 648

Why you should avoid RG-58

People are often not aware how coax quality is generally more important today, sometimes (or maybe particularly) even seasoned hams and SWLs, because they made contact with the hobby in times when the coax shielding was in fact less of an issue. Many, if not most of us live in houses with lots of mo...
by 13dka
Sun Nov 26, 2017 6:28 pm
Forum: SDRplay related
Topic: RSP2 with hardware frequency tuning wheel
Replies: 8
Views: 1117

Re: RSP2 with hardware frequency tuning wheel

AFAIK SDR Console supports the T-Mate2 directly. No experience with that tho, about to order it for xmas. :)
by 13dka
Sun Nov 26, 2017 6:23 pm
Forum: SDR Antennas
Topic: Cable RF pickup.
Replies: 5
Views: 410

Re: Cable RF pickup.

AFAIK even the good types of RG58 provide a shielding of only 45dBm, so using this in any high-sensitivity application and/or noisy environment is simply a no-go. Use double-shielded 75 ohms sat coax or, to be on the safe side, at least H155 instead.
by 13dka
Mon Nov 20, 2017 7:51 pm
Forum: General
Topic: NDB reception
Replies: 12
Views: 1590

Re: NDB reception

can you post some details about your loop? horizontal I suppose... Yes, horizontally polarized (so physically a vertical, "upright") loop, center-fed (vis-a-vis the apex) which is not ideal (high main lobe elevation angles), but this way I could easily conceal the coax in the hedge and th...
by 13dka
Mon Nov 20, 2017 6:58 pm
Forum: SDRuno
Topic: Scanner?
Replies: 20
Views: 1491

Re: Scanner?

It would be best to simply try it (quite easy since you can just copy as many instances of SDR# to your HDD as you want, just put them all into an individual folder). However of course it can stop at busy frequencies and has provisions to log activity time on frequencies it found. There is an "...
by 13dka
Sun Nov 19, 2017 6:30 pm
Forum: SDRuno
Topic: Scanner?
Replies: 20
Views: 1491

Re: Scanner?

Paul, you may find the last post in this thread http://www.sdrplay.com/community/viewtopic.php?t=248 useful. That's how you get (among other useful stuff) Vasily's (sp?) "Fast Scanner" plug-in, with the name being a massive understatement. Scan speed depends a lot on IF bandwidth of course...
by 13dka
Sun Nov 19, 2017 6:10 pm
Forum: General
Topic: NDB reception
Replies: 12
Views: 1590

Re: NDB reception

Glad you get reception "down there" now. :) However, while a miniwhip-style antenna gives surprisingly good results even "down there", a simple wire loop will beat it on many occasions. Here's a comparison of VLF and NDB reception with a dipole vs. a loop of the same wire length....
by 13dka
Tue Sep 19, 2017 7:22 am
Forum: SDRplay related
Topic: RSP-2 antenna select via Device Control Panel?
Replies: 10
Views: 1516

Re: RSP-2 antenna select via Device Control Panel?

Sorry I meant to report this a long time ago, when SDRUno still had a similar behavior, which was fixed later. It seems an unlucky combination of antenna port selection and LNA GR (or the difference in possible GR settings between the SMA and HiZ ports) is not gracefully handled by the ExtIO.dll (al...

Go to advanced search