Hans-Albrecht Haffa schrieb: Lieber Uwe, hier also meine Qellen: - Eine Seite aus dem Repetitorium in "Siemens Compüonents 22 ( 1984) Heft 5 - Fritz Vilbig: Lehrbuch der Hochfrequenztechnik, Vierte A
Hallo to all, i inform all the LF comunity that is now on the air a beacon located here in North Italy, few kilometers west of Garda Lake, at the top of a mountain, 980 meters above sea level. The fr
Hans-Albrecht Haffa schrieb: - Look to Curves explaning the skin effect, that means that diameter or thickness of the copper is restricted, depending on the frequency used. Hi Hans, where can I look
Rik Strobbe schrieb: Hello LF group, I am trying to make a list of toroid core material that is suitable for 136kHz power applications, for impedance transformers and low-pass filters. I would apprec
Stewart Bryant schrieb: There is something else strange about the setup, because I could only correctly save the file (and open it with excel) when I used IE to get it. Using Netscape did not save it
Alberto di Bene schrieb: Today I found in my archived files an Excel sheet that computes the number of turns for a given inductance on a given core, and viceversa, made by WA1ION. In my opinion it co
Johan Bodin schrieb: Dear Jim, thanks for "listening". Thanks for the suggestion. I will put it on 7000.013 kHz and also add a class D "pair of boots" (a 74AC00 gate with series resonant tank :-). Un
Alexander S. Yurkov schrieb: Hi, Group. RU6LWZ QRSS120 test will be on freq 137.000 today started at 15z 73 de RA9MB/Alex http://www.qsl.net/ra9mb Hi Alex, I have had a nice x-band QSO with Vlad/RU6L
José Manuel schrieb: Hi to all: At 19.46 UTC I saw on 137000-QRSS3 the next transmission: QRZ 370 RU6LA K I think that couldn´t be transmitted from RU6LWZ site. 73 de José Manuel, EA1PX The frequency
José Manuel schrieb: Hi to the Group: I´ll appreciate any report of my signals on 137705 Hz. Radiated power: 1 mW. 73 de José Manuel, EA1PX. Hi Jose Manuel, what kind of emission is it? saludos de Uw
Hi all, I discovered a stable 30-litre-bucket in our garden. material: PVC. color: black. however vy soiled with a mixture of garden earth and chicken excrement. after cleaning it was wound immediate
Brian Rogerson schrieb: Does anyone want to claim the signal on 135.923KHz or is it a commercial station? 73, Brian 73 Brian CT1DRP IN51QD 41 09 58N 08 39 11W http://homepage.esoterica.pt/~brian Hi B
Hi all, 07.09.2002 at abt 1210utc on 137,704 kHz I copied the tail of a qrss transmission. nothing else. see attachment. S+N/N = -51dB/-74dB. BTW. Gus/SM6BHZ are you on this reflector ? regards Uwe/d
Dave Sergeant schrieb: ...... It looks like quite a few 136 chaps are now to be found on 5MHz. I have just had my first few (CW) QSOs on the band and these include Derek G3HEJ, Tom G3OLB, and Steve G
Alberto di Bene schrieb: About Uwe's question, frankly I have no answer... Uwe, how does that level meter behave when no program (neither Argo nor Speclab) is running ? That could give some hints. 73
Hans-Albrecht Haffa schrieb: Lieber Uwe, dieses Problem ist bei der Berechnung von Resonanzwandlerschaltnetzteilen gründlich untersucht worden. Der Kennwiderstand eines Schwingkreises darf minimal de
Hi All, I have got a theoretical problem: if I considerably change the output pwr of any tx - sw or lf - I have to readjust the matching equipment. more pwr means less inductivity to readjust the res
James Moritz schrieb: A while ago, I had a problem with a weak FSK signal around 137.4kHz - it turned out to be a 3rd order intermod between the "DCF" stations on 138.83 and 128.93, and DDH47 on 147.
[email protected] schrieb: DCF49 as 129930.015Hz and DBF39 as 138830.033Hz. They seem to be stable at least on a 10mHz scale, but we currently don't know whether they are free-running or somehow l
Gasparik Richard schrieb: Hi all... After the installation and start of the new version of the Argo - nothing. I doesn't work on my comp. It's for the first time that I have a problem with Argo. It's