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References: [ +from:martin@ok1rr.com: 13 ]

Total 13 documents matching your query.

1. Re: [RFI] where to buy FairRite? (score: 1)
Author: Martin <martin@ok1rr.com>
Date: Tue, 28 Apr 2009 04:37:57 +0200
Jim Brown napsal(a): Oh, I would beg for stopping talks about cheating. BTW we in OK are allowed to run 750 Watts any time, 2 kilowatts in contests and 3 kilowatts in contests if you are operating ou
/archives//html/RFI/2009-04/msg00076.html (9,694 bytes)

2. Re: [RFI] Computer locks up (score: 1)
Author: Martin <martin@ok1rr.com>
Date: Thu, 25 Nov 2010 07:36:13 +0100
Dave, check the balun. If you want to construct your own, good mix is the 31. Also, obtain a lot of clamp-on chokes and try to choke out all cables connected to your computer. 73 Martin, OK1RR Dne 25
/archives//html/RFI/2010-11/msg00103.html (7,548 bytes)

3. [RFI] ZCAT3035-1330 by TDK (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Thu, 20 Jun 2013 21:56:37 +0200
I got a lot of ZCAT3035-1330 snap-on cores by TDK. What material is it, how good/bad are they for choke baluns and RF power transformers? I have already the TDK "Clamp Filters (Ferrite Core with Case
/archives//html/RFI/2013-06/msg00037.html (7,019 bytes)

4. [RFI] Strange noise on 80m (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Wed, 14 Dec 2016 01:54:46 +0100
Here appeared a strange broadband noise over whole 80m band. No birdies, sounds like an extreme QRN. Screenshots from my Elecraft P3 are here: Dec. 4 3503 kHz http://www.ok1rr.com/public/80m.png toda
/archives//html/RFI/2016-12/msg00049.html (7,422 bytes)

5. [RFI] PA0SIM Noise Canceller - info wanted (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Tue, 10 Jan 2017 06:17:59 +0100
Hello, has somebody any useful, real life experience with the PA0SIM's noise canceller (phaser)? http://www.pa0sim.nl/Phaser%2080%20-%2010%20meters.htm I would be interested especially on any info ab
/archives//html/RFI/2017-01/msg00041.html (6,984 bytes)

6. [RFI] Server switching power supplies (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Tue, 27 Jun 2017 07:59:24 +0200
I have a question: I've come into some server switching power supplies which I want to use for transceivers powering. These PS are very powerful (80 - 200 Amps) and efficient but the main problem is
/archives//html/RFI/2017-06/msg00051.html (7,603 bytes)

7. Re: [RFI] What I want for Christmas with regards to RFI (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Mon, 17 Jul 2017 09:27:46 +0200
Too pricey for me - how many times would I use it? Considering to use the RTL SDR, the 'el cheapo' one. http://www.ebay.de/itm/100KHz-1-7GHz-Full-band-UV-HF-RTL-SDR-USB-Tuner-Receiver-R820T-8232-Ham-
/archives//html/RFI/2017-07/msg00041.html (9,463 bytes)

8. [RFI] Ferrite core and hot glue? (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Fri, 23 Aug 2019 11:22:53 +0200
I need to fix a choke balun wound on a BN61-2402 binocular core to the PC board. The hot glue has 200 degs C when applied. Can it destroy the core? 73, Martin, OK1RR _________________________________
/archives//html/RFI/2019-08/msg00042.html (6,722 bytes)

9. [RFI] Please comment this picture (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Tue, 3 Jan 2023 20:03:45 +0100
The attached picture displays my proposed CM choking scheme around the antenna switch. Take a look at this and comment, please - what is insufficient, what is an overkill etc. The pic is also here: h
/archives//html/RFI/2023-01/msg00010.html (7,797 bytes)

10. Re: [RFI] Please comment this picture (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Wed, 4 Jan 2023 05:29:34 +0100
Forget to mention - the feedline is RG400. 73, Martin, OK1RR Dne 04. 01. 23 v 4:49 john@kk9a.com napsal(a): What is your feedline? John KK9A Jim, I have measured (Icom 7300) reduction of nearly 11 dB
/archives//html/RFI/2023-01/msg00022.html (7,621 bytes)

11. Re: [RFI] Please comment this picture (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Wed, 4 Jan 2023 09:40:46 +0100
My feedline actually consists of more parts: 1) from radio to wall mounted switch - 8 mtrs of RG400 2) from the switch to 80m sloped dipole - 10 mtrs of RG400, a W2DU style choke balun is an integral
/archives//html/RFI/2023-01/msg00025.html (8,672 bytes)

12. [RFI] A Question to the 2018Cookbook (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Fri, 6 Jan 2023 04:44:40 +0100
To the 2018Cookbook: This is probably a stupid question, but how do you wind 20 turns of RG400 cable on a 2.4in toroid? 73, Martin, OK1RR _______________________________________________ RFI mailing l
/archives//html/RFI/2023-01/msg00033.html (6,999 bytes)

13. [RFI] MN8CX cores availability? (score: 1)
Author: Martin Kratoska <martin@ok1rr.com>
Date: Fri, 14 Jun 2024 15:52:54 +0200
I was not lucky to find MN8CX dealer. Do you know any who shipd also to EU? 73, Martin, OK1RR _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesti
/archives//html/RFI/2024-06/msg00030.html (6,551 bytes)

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