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References: [ +from:"Dr. Tom Gruis": 32 ]

Total 32 documents matching your query.

1. LF: RE: ZAP (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
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" <[email protected]>
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" <[email protected]>
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" <[email protected]>
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" <[email protected]>
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" <[email protected]>
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" <[email protected]>
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. Re: LF: Icom IC-746 on LF (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Tue, 27 Feb 2001 12:53:12 -0600
I should have stated that I know this isn't legal here in the US - yet - but hope still exists! Doc. While surfing around the "net" for specifications on Icom's IC-746 HF/VHF transceiver, I found a m
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00010.html (9,050 bytes)

9. Re: LF: Icom IC-746 on LF (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Tue, 27 Feb 2001 12:52:10 -0600
IF this proves to be true - I'd welcome a guide to doing the same to a 718! Doc. While surfing around the "net" for specifications on Icom's IC-746 HF/VHF transceiver, I found a modification to open
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00011.html (9,009 bytes)

10. LF: Beacons off for vacation. (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Fri, 29 Jun 2001 15:12:56 -0500
Hello from Iowa, EN31do. In a few minutes I'll be turning off all 5 of my amateur beacons until the 11th of July. We will be on a touring vacation. The house and pet sitters are not radio people. I w
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00010.html (7,969 bytes)

11. LF: Please unsubscribe for a bit (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Fri, 29 Jun 2001 08:31:40 -0500
We will be leaving on a family vacation tomorrow and will not return until 11 July. Please disconnect me until then! 73, Doc. "Bitte vergessen Sie nicht die Antenne zu erden!" <-- LOVE that phrase!
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00014.html (8,772 bytes)

12. Re: LF: Lightning -- Knife Switch Source (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Fri, 29 Jun 2001 08:01:15 -0500
I have read that these old knife switches have very poor RF insulation qualities. Perhaps this effect is frequency and/or power sensitive (for want of better terminology) to some extent. Doc. Tom, G3
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00016.html (9,502 bytes)

13. Re: LF: Re: Static effects (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Tue, 19 Jun 2001 14:10:00 -0500
Hello from Iowa in the US - EN31! As a personal opinion and preference and based on a long period of time of radio experimentation, NEVER have ANY antenna without some type of a DC path to ground at
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00121.html (9,766 bytes)

14. LF: Cave Radio - Thank You too! (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Tue, 10 Jul 2001 12:28:53 -0500
Thank you too, Sir! It will be passed along. Doc. Check out my web site at http://www.caving.btinternet.co.uk There is a little about cave radio beacons for radio location and depth finding. Also the
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-07/msg00146.html (9,733 bytes)

15. Re: LF: Re: Cave Radio (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Tue, 10 Jul 2001 10:46:42 -0500
Thank you. I will also pass this information along. My family and I recently took a tour of Oregon Cave in the U.S. and the delightful young lady serving as a tour guide was in her final year of trai
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-07/msg00148.html (10,112 bytes)

16. LF: Cave Radio (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Mon, 09 Jul 2001 16:22:01 -0500
Helllo from Iowa, USA. I seem to recall an earlier thread about Cave Radio on this reflector. I made note of this URL: http://www.bcra.org.uk/sig/creg.html Are there any more out there? 73, Doc.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-07/msg00150.html (8,500 bytes)

17. LF: Long Wave Broadcasting (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Wed, 05 Sep 2001 20:50:29 -0500
Hi from Iowa, USA, EN31do This my seem a silly question, but I am curious. How is the audio quality of European LW BC stations? The bandwidth percentage is really something on those frequencies. Do t
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-09/msg00153.html (8,943 bytes)

18. LF: Book search (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Wed, 01 May 2002 21:09:49 -0500
I apologize if this is offensive because it is off subject but here goes anyway. My rationale is that this list covers many nations and probably many others interested in books, history, and/or radio
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-05/msg00175.html (8,641 bytes)

19. Re: LF: IEE Presentation (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Mon, 28 Oct 2002 15:32:39 -0600
Likewise and thanx! Doc. Dick Rollema wrote: Andy, Please send me a copy. Thanks! 73, Dick, PA0SE At 13:41 28-10-02 +0000, you wrote: My Poster Presentation "Amateur Use of Novel Signalling Methods a
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-10/msg00047.html (11,480 bytes)

20. LF: A URL (score: 1)
Author: "Dr. Tom Gruis" <[email protected]>
Date: Mon, 21 Oct 2002 11:30:46 -0500
Hi from Des Moines, Iowa - EN31do. I happened across this list a while ago and just thought I'd share it for whatever it is worth. Apologies if you already know about it. http://www4.gratisweb.com/ut
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-10/msg00178.html (9,327 bytes)


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