Interesting read () However after a few paragraphs I was unable to read any further because I became distracted by all the bullshit-detector alarm bells going off in my head. Oh come on, this really
Hi Daniele, I felt real guilty.. and added a reference to the authors site on my webpage. 73s Minto pa3bca -- Ceterum censeo Carthaginem delendam esse From: [email protected] Daniele Tincani S
0.5 mH, nice! According to my measurements I will need a 3.5 mH loading coil, your 0.5 is just a bit more than I need at 500 KHz 73s, Minto pa3bca -- Ceterum censeo Carthaginem delendam esse From: g3
Hi Stefan, DCF39 is more than 40 dB above the noise, but the problem is that my FT897 only seems to have 40 dB dynamic range without the AGC. (range between the receiver noise floor, and max LF outpu
Hi Stefan. I see your CQ on my grabber at this moment. How does your ERP now compare with yesterday (during your QSO with Mal)? It looks like S/N is now worse here then yesterday. Reason might be the
Hi Stefan, Some comments: I think the mechanism is that the unwanted signal on the screen causes a potential difference between gate and source of the first (J)FET. So this causes a current flow in t
Uh oh now I really feel the pressure... MUST make time for this, but it I dont really have much spare time at the moment. So I cant promise anything, but I believe I said earlier that my target was e
Hi Clemens, LS Hah.. another can of worms opened... thanks Stefan :-) !! So it seems that ferrite indeed may work. Probably not as good as any other alternative but who knows, at least it may lead to
Also in JO21QV: http://pa3bca.pa3bca.nl:8181 73s Minto pa3bca -- Ceterum censeo Carthaginem delendam esse --Original Message-- From: Jean-Pierre Méré Sent: Thursday, August 25, 2011 23:14 To: rsgb_lf
I havent thought about ferrite RX antenna for LF.My guess is that it is not going to work not without an external antenna coupled to the ferrite, and then whats the point? DCF77 clocks often have tro
Hi Mal, Nice sig in JO21QV. 73s Minto pa3bca -- Ceterum censeo Carthaginem delendam esse Attachment: g3keq@pa3bca_2011.08.20.png Description: PNG image
Did I write manual AGC ? Obviously I meant to write manual (IF) gain control. Minto pa3bca -- Ceterum censeo Carthaginem delendam esse From: [email protected] Minto Witteveen Sent: Monday, Au
Hi Stefan, (et al) Well I beg to differ.. :-) What I think happens is this: The outside of the coax picks up electromagnetic radiation like any antenna (including QRM generated by fluorescent lamps a
Hi Mal, Monitoring your CQ right now. I set up a experimental test grabber on my local server dont expect it to be continuously up and running (and if running, displaying meaningful data...) , I plan
Hello Stefan, I really cannot explain why I did not hear anything. But I will keep trying , and improve receive conditions where possible. I did eliminate two QRM generators, a Philips fluorescent la
... probably not. :-) I suspect it is PA0A, the signal is 15 dB stronger than Stefan. Stefan, notice the slow QSB, several dB;s. 73's Minto pa3bca -- Ceterum censeo Carthaginem delendam esse --Origin
Hi Mal, Yes fluorescent lights (old AND new ones) are an annoying source of QRM. But I dont think my neighbors would appreciate me getting rid of _their_ lamps as well. You are right w.r.t. the cable
Hi Mal, Looking at his grabber, my own AND the current lightning map of western Europe it almost definitely is caused by massive lightning storms over the continent. My grabber is also washed out com
Hi Wolf, Stefan, LF Interesting might be worth a try. It is easy to set up, I already have the SA612 employed in my 137 KHz receiver. So just a ferrite bar, varco, buffered and amplified using a J310
Hi Stefan, Roelof, Albert, Markus. Thanks for the info. So between 50 dB en 90 dB Thats quite a range. I _think_ it is more than 50 dB, but most certainly not in the 80-90 dB range, alas. Not with th
