Return to KLUBNL.PL main page

Search String: Display: Description: Sort:

Results:

References: [ +from:: 66 ]

Total 66 documents matching your query.

1. LF: RE: ZAP (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Mon, 5 May 2008 13:04:35 -0500
Hello from Iowa in the US - EN31do, Very interesting. Such technology could be reasonably expected to exist. I agree with your observations totally. Granted that my anecdote is about 10 years olde: a
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-05/msg00020.html (10,002 bytes)

2. LF: RE: RE: Survival (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Mon, 5 May 2008 15:08:02 -0500
Well, now that you ask - and this is true - a friend of mine's parents built a bomb shelter back in the early 50s when Stalin was "about to push the button." According to Bill his parents went first
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-05/msg00105.html (10,487 bytes)

3. RE: LF: Faroe Islands 531kHz (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Tue, 18 Nov 2008 14:35:08 -0600
Pictures of the site and equipment would be great to see! Doc. Below the answer from Hans Andor Johannesen -- 73 Hartmut www.h-wolff.de Locator: JO52hp -- Original-Nachricht -- Betreff: RE: Akraberg
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-11/msg00285.html (11,075 bytes)

4. LF: "Crystal" set sorts (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Wed, 7 Jan 2009 16:14:46 -0600
Good afternoon, here in EN31do. Please do not flame me. I have the top US Commercial 'Phone license (since 1954 - with radar endorsement), extra ham radio license, and 40 years in broadcasting mostly
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00036.html (10,395 bytes)

5. RE: LF: "Crystal" set sorts (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Wed, 7 Jan 2009 16:41:52 -0600
Thank you - I learned something today and that makes it a good day. I knew it had nothing to do with receivers of any kind. My misconception was since it was such a powerhouse that its signal strengt
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00561.html (9,730 bytes)

6. RE: LF: Razor blade RX (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Wed, 7 Jan 2009 17:33:27 -0600
Items: 1. I thought this was a list for people interested in radio and LF/VLF, etc. specifically. 2. I very rarely have posted although I read the list regularly and have been trying to learn. In thi
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00900.html (11,181 bytes)

7. RE: LF: Razor blade RX (score: 1)
Author: "Dr. Tom Gruis" <>
Date: Tue, 6 Jan 2009 16:34:23 -0600
Ah! Crystal sets! More of the joy of analog.... Doc, Mal, I did build a "crystal radio" with a razor blade as detector when I was 14 years old. It had to be rusty to work properly and even then it wa
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg01257.html (10,610 bytes)

8. LF: (no subject) (score: 1)
Author: "Tom Gruis, Ed.D., K0HTF, K.Y.C.H." <>
Date: Sat, 13 Mar 1999 11:14:58 -0600
Hello from Iowa, EN31dx! Perhaps you have already received this information, in which case I apologize for repeating it. Pretty exciting news for me - on the verge of retirement. Doc Gruis __________
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-03/msg00090.html (10,382 bytes)

9. Re: LF: Re: Weekend report 24/25 April (score: 1)
Author: "Doc Gruis" <>
Date: Thu, 29 Apr 1999 17:44:03 -0500
Interesting. Here in the States I have had much better luck in using a capacitor to couple to the telephone lines. The intensity of the noise does not seem to be quite as intense. This has worked for
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-04/msg00152.html (9,799 bytes)

10. Re: LF: Pictures of LF ATU in Karlsborg (score: 1)
Author: "Doc Gruis" <>
Date: Wed, 21 Jul 1999 17:08:47 -0700
Hello from Iowa in the U.S. (EN31dx) Two observations: 1. I am very concerned by the lack of apparent cooling whether by air-conditioning or at least by a fan when this ATU is used at QRP levels! ;-)
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00117.html (8,682 bytes)

11. LF: De-tuned antenna (score: 1)
Author: "Doc Gruis" <>
Date: Wed, 21 Jul 1999 20:32:57 -0700
I really don't know if there is the practice in Europe of directional AM broadcast stations, i.e., 540 to 1600 (or 1700) KHz., but it sure is practiced here in the U.S. The mention was made of the fo
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00120.html (9,314 bytes)

12. Re: LF: De-tuned antenna (score: 1)
Author: "Doc Gruis" <>
Date: Thu, 22 Jul 1999 08:50:38 -0700
Thank you. At the present all the U.S. allows is i watt input to a 50' antenna and that 50' includes loading coil, and transmission line, and such. I have been partial to some off center or center l
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00131.html (9,138 bytes)

13. Re: LF: Ground systems (score: 1)
Author: "Doc Gruis" <>
Date: Mon, 26 Jul 1999 16:02:35 -0700
I have been a bit out of the circuit the last couple of days regarding this thread. Yours seems a very thorough investigation. Please excuse me if I revert to my MW BC experience. At a number of inst
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00172.html (11,816 bytes)

14. Re: LF: G3LNP Clover(?) test (score: 1)
Author: "Tom Gruis, Ed.D." <>
Date: Fri, 22 Oct 1999 09:12:34 -0500
Hello from Iowa in the U.S. A question for you: what is "Clover?" That is a new one to me. Thanks in advance and 73, Doc Gruis. _____________________________________________ Alan Melia wrote: A very
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-10/msg00162.html (8,568 bytes)

15. Re: LF: All systems running (score: 1)
Author: "Tom Gruis, Ed.D." <>
Date: Mon, 13 Dec 1999 13:49:53 -0600
Ahhh! I wish I could fulfill your request and send a comparison between the old and new antennae! But, of equal importance to me, is to find another radio-active person subscribing to me theory that
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-12/msg00056.html (8,994 bytes)

16. Re: LF: 35 km band (score: 1)
Author: "Tom Gruis, Ed.D." <>
Date: Fri, 14 Jan 2000 12:25:58 -0600
You might check the LWCA homepage. It seems to me that there used to be an experimenter located in Cedar Rapids, Iowa, USA, that operated in the audio range and that he was a member of that group. I
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00133.html (10,152 bytes)

17. Re: LF: 35 km band (score: 1)
Author: "Tom Gruis, Ed.D." <>
Date: Fri, 14 Jan 2000 14:47:43 -0600
100%. I meant to be brainstorming more than advising. Doc. The problem with loop to loop operation at these frequencies is that is subject to the inverse cube law of magnetic induction rather than an
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00136.html (10,199 bytes)

18. Re: LF: ITU document. (score: 1)
Author: "Tom Gruis, Ed.D." <>
Date: Tue, 25 Jan 2000 21:32:34 -0600
Dave and all - Try this URL for the document. The list indicates it is indeed there. I put "sky-wave" into their search spot, and there are more than one matching references. http://www.itu.int/plweb
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00307.html (8,532 bytes)

19. Re: LF: ITU Document (score: 1)
Author: "Tom Gruis, Ed.D." <>
Date: Wed, 26 Jan 2000 08:38:04 -0600
Andre - Okay. You are oh so right! I copied the URL and pasted it into my previous post so for once it was not my terrible handwriting. But if you go to this address you reach the ITU: http://www.itu
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00308.html (9,451 bytes)

20. Re: LF: Re: Beacon Tests. (score: 1)
Author: "Doc Gruis" <>
Date: Fri, 25 Feb 2000 09:15:03 -0600
Ahh - are those "O" symbols the letter "O" or the number "0?" -;) On my L.F., 10 meter and VHF beacons I added a "hold" circuit that continues the carrier until the ID cycle begins again and is keyed
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00249.html (9,383 bytes)


This search system is powered by Namazu