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121. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Fri, 18 Jan 2013 15:35:07 +0000; 'normally' grow lights are on and off on a 12 hour cycle. I thought I had a 24/7 problem here that turned out to be grow lights on a 12 hour cycle because of their timing and when I was checking. If; /archives//html/RFI/2013-01/msg00082.html (9,633 bytes)
122. Re: [RFI] RFI on 1.8 mhz (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sat, 19 Jan 2013 12:18:25 +0000; I'm sorry, but I don't believe simple audio recordings are very useful in many cases. the information about something that is creating interference across many Mhz that you can capture in a couple kh; /archives//html/RFI/2013-01/msg00084.html (9,227 bytes)
123. Re: [RFI] getting a solar power inverter - recommendations? (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Fri, 01 Feb 2013 13:13:09 +0000; With the addition of a few clamp on ferrites the Enphase http://enphase.com/ microinverters are fine. I have 5 kw system in the midst of the antenna farm and it was only making a little bit of hash o; /archives//html/RFI/2013-02/msg00001.html (7,892 bytes)
124. Re: [RFI] Strong, broadband noise during wet conditions (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Fri, 15 Mar 2013 21:00:42 +0000; If it was not snowing at the time then it was likely dirty or damaged insulators on the primary power line. The noise could be conducted quite a distance on the primary wire so would cover a big area; /archives//html/RFI/2013-03/msg00078.html (10,311 bytes)
125. Re: [RFI] Per prior EMP discussions - onesecondafter.com (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sun, 07 Apr 2013 10:44:46 +0000; Who doesn't have a receive antenna for emp?? Maybe a caveman, or aboriginal tribe in the outback or amazon, but the rest of us are pretty well set to get lots of stuff fried. David Robbins K1TTT e-ma; /archives//html/RFI/2013-04/msg00002.html (8,501 bytes)
126. Re: [RFI] Shielding a ground wire (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sun, 28 Apr 2013 11:20:30 +0000; Just keep repeating... there is no such thing as a ground for RF or Lightning. Follow that with... There are 3 types of problems to be addressed by 'Grounding'. 1. AC Safety - fairly simple... all eq; /archives//html/RFI/2013-04/msg00068.html (12,491 bytes)
127. [RFI] fence chargers (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Mon, 13 May 2013 22:40:48 +0000; A neighbor just brought out an old fence charger and put it on a small fence around his beehive. makes a heck of a racket! I haven't checked in a while but aren't there new chargers that are quieter?; /archives//html/RFI/2013-05/msg00045.html (6,766 bytes)
128. Re: [RFI] 6M fm iNTERFERENCE (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Mon, 20 May 2013 22:33:07 +0000; Radioshack used to sell a 49mhz headset that had vox and was nice for tower work... used to hear baby monitors all over town from up the towers. But never heard any of them above 50mhz. David Robbins; /archives//html/RFI/2013-05/msg00061.html (9,998 bytes)
129. Re: [RFI] RFI, Power Company. (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sat, 25 May 2013 11:05:06 +0000; Even places where they try to define a difference admit that common usage often confuses the terms: http://depts.washington.edu/vehfire/ignition/electrical/arcdef.html Historically a spark was usuall; /archives//html/RFI/2013-05/msg00074.html (8,767 bytes)
130. Re: [RFI] RFI Noise - Part II (score: 1): Author: "K1TTT" <K1TTT@ARRL.NET>; Date: Sat, 06 Jul 2013 10:48:05 +0000; AC/Heat Pump units outside. They probably wouldn't... but grow lights put out lots of heat and you don't want to cook your plants. I found explaining that the fcc could get involved and that the noi; /archives//html/RFI/2013-07/msg00010.html (8,944 bytes)
131. Re: [RFI] Deja BUZZZ.. vu (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Fri, 27 Sep 2013 22:37:31 +0000; It is also amazing the response and cooperation when you point out that if you can find it with a little hand held radio that the fcc could find it just driving by, and they show up with local law en; /archives//html/RFI/2013-09/msg00087.html (9,894 bytes)
132. Re: [RFI] Interference from Oil Burner Ignitor (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Sun, 01 Dec 2013 15:45:23 +0000; Tell them it is interfering with your AM radio reception... you can suspect that maybe a ground wasn't reconnected, or maybe a bolt isn't holding it tight to the case, or maybe a dirty connection, or; /archives//html/RFI/2013-12/msg00001.html (9,150 bytes)
133. Re: [RFI] Noise... (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Thu, 13 Mar 2014 11:29:19 +0000; Sometimes simpler is better...you get better bearings off the side nulls on yagis. I have had good luck with a battery powered sw receiver with a loopstick, nulls are very sharp on the ends and can g; /archives//html/RFI/2014-03/msg00026.html (9,407 bytes)
134. Re: [RFI] My RFI battle.... (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Sat, 22 Mar 2014 15:48:21 +0000; There are some audio and sdr-iq wide band recordings at: http://wiki.k1ttt.net/2012%20Maintenance%20and%20Upgrade%20Blog.ashx#160mrfi The spectrum display is more interesting, but not diagnostic as b; /archives//html/RFI/2014-03/msg00119.html (9,452 bytes)
135. Re: [RFI] Shielded vs unshielded loops. (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Fri, 28 Mar 2014 11:39:15 +0000; Forget hour, 5 minutes, most of that waiting for a soldering iron to heat, is about it. 2 or 3 turns of solid wire about 1' in diameter soldered to maybe 10' of coax and taped to scrap of 1x2 a coupl; /archives//html/RFI/2014-03/msg00240.html (8,612 bytes)
136. Re: [RFI] (Fwd) [ICOM] Reflector Software Change (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Sat, 26 Apr 2014 19:57:04 +0000; I see an issue... reply-all doesn't put the list address in either the to or cc fields. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster node: 145.69MHz or teln; /archives//html/RFI/2014-04/msg00201.html (11,086 bytes)
137. Re: [RFI] (Fwd) [ICOM] Reflector Software Change (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Sat, 26 Apr 2014 20:05:30 +0000; Arg, this is going to be confusing... even the reply to my own reply shows the 'dale j via rfi' on the to line. I really think that all lists should show ONLY the list address as the source and reply; /archives//html/RFI/2014-04/msg00202.html (12,066 bytes)
138. Re: [RFI] Sungevity Solar RFI (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Fri, 02 May 2014 10:11:36 +0000; I have a grid tied microinverter system using the Enphase inverters. It had a small amount of rfi on 10m that was cleaned up with a few snap on chokes. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.n; /archives//html/RFI/2014-05/msg00003.html (7,710 bytes)
139. Re: [RFI] Data signal at 21001.47 (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Sat, 03 May 2014 19:06:01 +0000; Yep, hear it here, 21001.5, best heading about 30 degrees from way west mass, only about s3 and sounds watery so may be over the pole from central asia or there abouts. David Robbins K1TTT e-mail: ma; /archives//html/RFI/2014-05/msg00008.html (8,126 bytes)
140. Re: [RFI] Data signal at 21001.47 (score: 1): Author: "David Robbins" <k1ttt@arrl.net>; Date: Sun, 04 May 2014 10:23:00 +0000; I think it was just fsk with something near the normal ham shift but probably a higher baud rate. Signal wasn't too good here though so I couldn't get any decode out of it. David Robbins K1TTT e-mail; /archives//html/RFI/2014-05/msg00010.html (8,102 bytes)

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