... From: "Ronald Wagner" ... One ground connection is needed between the Softrock and the soundcard (computer). Others may find differently but I have always...
Hello, I am using the 10W PA from DL-QRP-AG (http://www.qrpproject.de/UK/QRPPA2008UK.html). The PA has abt. 30dB gain and good IMDs. My modification of...
... series with ... thinking that ... snip snip ... Alan, does that mean leaving the ground on the USB cable disconnected? HAPPY NEW YEAR!!! 73 de Ken H> K9FV...
... From: "Ken" > ... That is the way I do it, I use a 10nF capacitor from the USB ground to the Softrock ground. I'm not saying it's the best way but it works...
Thanks for pointing this out, guess I just missed seeing it. Well if I didn't screw up anything in the process, it should work. without that jumper it hears...
Thanks, that's exactly what I wanted to know. I wanted to try something like this out but was wondering whether the tuned transformer was serving some...
Hi Christos (SV1EIA)  Tnx for the idea. Could you publish details like PN for the xformer etc?  Many thanks and Happy New Year to you and all on list and...
OK, I see that would isolate and prevent any DC ground loops, but can the ground loop not be in the AC region? OR maybe it's only the DC ground loops that...
... From: "Ken" ... Well, the current through ground loops is basically at mains frequency and its lower harmonics. A lowish value capacitor will have a...
What is Chip Quick, please explain because I am sure that there are many places in the world where this expression is not known even in HAM circuits. 73, Henk,...
... From: Henk Keppel To: softrock40@yahoogroups.com Sent: Thursday, January 01, 2009 8:04 PM Subject: [softrock40] Re: Si 570 removal tips What is Chip Quick,...
Thank goodness for WB5RVZ. I have been poring over the schematics for the SoftRock V9 and the electronically switched BPF, trying to understand how the BPFs...
Good Evening All, The connection details from the electronically swithced v9.0 BPF board to the 2-pin header, J3, on the v9.0 receiver board have are now shown...
OK, it's getting better now - OR maybe I'm just more confused. By "mains frequecy" you mean the 60 (or 50) cycles of the power line? A "lowish" value (such as...
Just a note to say mine receives fine, especially after adding a temporary jumper to j201 pins 1 to 5 for the RX antenna. The documentation was near perfect....
... On http://golddredgervideo.com/wb5rvz/hf_bpf/ it says "The automatic/electronic switching will be enabled later" whitout mentionning that powersdr and...
I do have 2 sr-rx6.2 with one xtall board for LO. I do run them in parallel connected to 2 antennas. For rx i do use winrad with a special extio-dll which...
... remember when you have the PA installed the rx will only work in the PA band, not above. If you have a 40m PA it wont rx on 20m even if you change the rx...
... From: "Ken" > ... Yes, I thought I was talking the wrong language! Over here we often call the 50Hz main power supply line "the mains" ... That depends on...
... connection? ... there. If it ... OK Alan, NOW it's getting clear to me - the signals will still have the ground return via the low value capacitor while...
Thanks, Cesco. I have updated the page in question to state this fact. Ho9wever, it simply begs the question: "OK, then how do I do THAT?" I would very much...
... call the ... small value ... through ... there. If it ... cable then ... disconnected to ... gives the ... that to ... until they ... Ah, the brits and the...
... says" page? Plz dont do that ... You will have to use my sdr1kusb.dll or one of the bpf enabled extio-dll's (mine or fred's). I have also written an...
I created a new version V15.3 of my modified firmware of the USB Si570 interface, and put it on the webpage < http://home.ict.nl/~fredkrom/pe0fko/SR-V9-Si570/ ...
