Those of you who visited Rugby (and even others) might find the flg short clip interesting. It comes from the "Friends of the Submarine" organisation magazine. Interesting theory on the effect of mag
You ought to be careful publicising that, Joe, somebody will patent it and start selling 100% efficient LF antennas based on your theory. After all, it's been done before! Walter G3JKV. -- Checked by
Hi group Some of you might be interested in this : Walter G3JKV. To "watch" tomorrow's Retiring the Sparks special event in realtime, click here: www.uscg.mil/camspac/qsl.asp (the permissions on this
Sure you've got that number right? Any other info - approx age, part of another unit, etc? Valves, transistors, chips? Any date plates on it? Look for a modification plate with dates scratched out. I
Have any of you G's installed BT's Home Network 1200 broad-band system? If so, did it cause any QRM, LF or otherwise? I want to network 3 computers and two phones so it seems I need their 1200 modem
I've seen similar wobbles in GPS-disciplined standards. The fundamental gradually drifts off then the GPS software algorithm slowly pulls them back in again. How often and how far depends on the prog
DK8ND's email raises an interesting point. Can any of our German friends tell me why an impedance of 60 ohms was popular in Germany for some time but not anywhere else? Walter G3JKV. -- Checked by AV
Markus, Congratulations on a very nice piece of observation. Since these three stations are on the same time reference (UTC) within a few nS and the baselines between MSF/JJY and MSF/WWVB intersect a
Not sure if it has any relevance to LF but condx on MW from N America are very good at the moment. Some low-power b/c (500W) not normally heard here have been audible for hours. On Spectran counted 2
Balloons. Lots and lots of helium filled party balloons. :-) Not if they're the type I got over Christmas. They wouldn't last long enough to have a decent QRSS30 contact. Walter G3JKV. -- Checked by
In the early days of LF experimenting we all thought Ts and Ls from available LF commercial knowledge. It soon became apparent that for a suburban QTH the shape of the antenna was unimportant. The t
This'll make you all jealous!!!! It's an extract from the "Memoirs of Dr. J A Pierce" that I happened to come across recently. He is describing the then-new US Navy VLF antenna at Cutler, Maine when
Well, if the stability and frequency accuracy of 2m beacons is anything to go by he'll have a terrible job finding beacons with Speclab at 23cm never mind 240 GHz!!!! Walter G3JKV. -- Original Messag
Looking at the screen grabs I must agree that they have achieved absolutely astonishing frequency stability; as they say, 1 in 10-13. Even more so for being the result of only a 5 MHz OCXO, ultra-sta
Yes, OK on my three different soundcards (not all in the same cptr!) But -- On v1 if I changed the sampling rate and/or resolution while it was running it didn't seem to mind and kept on running. On
Alberto, It's followed by "Audio output error" so you could be right. It's a 266 MHz W98 machine. Walter G3JKV. -- Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.631 / Virus
Yes, my server trapped it as a virus and deleted it. Walter G3JKV. -- Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.577 / Virus Database: 366 - Release Date: 03/02/04
Brian, Sorry, haven't got the cct for this one but they were all broad-band devices covering 70-127 kHz so should be OK for 136. Usually they needed 12v up the coax. Walter G3JKV. Would be most grate
My HF-225 is sufficently sensitive at 136 kHz to be operated on its own without preamps and its 200 Hz CW filter is good enough. Have never noticed intermods etc even putting a big antenna on it. Hav
Here's another oddity. Next to my patch there's a 150ft (50m) deep well that has dried up and the owner now intends to fill it in. He doesn't mind me dropping a few copper wires down it before he doe
