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Total 945 documents matching your query.

321. Re: [RFI] Topband: Tecsun 660 (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 08 Mar 2016 18:35:39 -0800
This is also why the phase canceling devices fail to work on this sort of RFI as well...  No point source. -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For
/archives//html/RFI/2016-03/msg00009.html (18,563 bytes)

322. Re: [RFI] Every 60 KHz (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Wed, 09 Mar 2016 10:44:40 -0800
Hi, If it is a SMS that has been on all night, they can get really stable...  I have one that starts off really bad, then after three or four hours, it is rock stable...   -- 73's, and thanks, Dave (
/archives//html/RFI/2016-03/msg00011.html (7,289 bytes)

323. Re: [RFI] Every 60 KHz (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Wed, 09 Mar 2016 20:29:44 -0800
I am pretty sure the ones I have are grow lamps...   -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For MixW support see: https://groups.yahoo.com/neo/groups/
/archives//html/RFI/2016-03/msg00013.html (8,467 bytes)

324. Re: [RFI] SBE URGES FCC ACTION ON RFI (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Mon, 21 Mar 2016 19:19:47 -0700
Very good news indeed!!!  Someone with some money does not like RFI...  That will help! -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For MixW support see: h
/archives//html/RFI/2016-03/msg00071.html (8,350 bytes)

325. Re: [RFI] RFI via Florescent Lights (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Fri, 08 Apr 2016 06:12:46 -0700
No kidding, destroy them...   -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For MixW support see: https://groups.yahoo.com/neo/groups/mixw/info For SSTV help
/archives//html/RFI/2016-04/msg00016.html (13,428 bytes)

326. Re: [RFI] RFI Tech Job - in eastern Ohio (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 03 May 2016 17:45:36 -0700
I so wish this was in Eugene, OR! -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For MixW support see: https://groups.yahoo.com/neo/groups/mixw/info For SSTV
/archives//html/RFI/2016-05/msg00007.html (7,585 bytes)

327. Re: [RFI] RFI Tech Job - in eastern Ohio (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Wed, 04 May 2016 06:55:08 -0700
I'm retired, so no...  :)  Just wish it were here. -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For MixW support see: https://groups.yahoo.com/neo/groups/mi
/archives//html/RFI/2016-05/msg00011.html (8,841 bytes)

328. Re: [RFI] JIM BROWN K9YC (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Wed, 04 May 2016 06:56:47 -0700
Nice Job Jim!!!   -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net For MixW support see: https://groups.yahoo.com/neo/groups/mixw/info For SSTV help see: http:/
/archives//html/RFI/2016-05/msg00012.html (7,945 bytes)

329. Re: [RFI] How far does RFI travel? (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Mon, 09 May 2016 05:39:53 -0700
Hi, RFI can propagate that far, and further.  I had one RFI source 1/2 mile away from me, that turned out to be a grow house, which was 20 over S9.   I would take baseline measurements now...  Get a
/archives//html/RFI/2016-05/msg00036.html (11,337 bytes)

330. Re: [RFI] MFJ 5008 ultrasonic receiver (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Thu, 19 May 2016 08:08:02 -0700
Hello Bob, I have not used the MFJ unit, so I am unable to comment on it.  I have used the older version from Xtal set Society, (in my review), and was happy with it.  The newer Xtal Set Society vers
/archives//html/RFI/2016-05/msg00069.html (9,243 bytes)

331. Re: [RFI] MFJ 5008 ultrasonic receiver (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Thu, 19 May 2016 11:31:52 -0700
Which brings up the order of purchase for the aspiring RFI hunter... For me I purchased items in this order, over a few years.... 1.  Mobile rig for hunting, FT-817. 2.  Home made loop. 3.  VHF handh
/archives//html/RFI/2016-05/msg00074.html (11,103 bytes)

332. [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 06:10:04 -0700
Hi, At some point in the last few weeks, someone mentioned something along the lines of a broadband RFI generator type of switching supply, of a type that sprays a huge swath of spectrum with what ap
/archives//html/RFI/2016-05/msg00081.html (9,013 bytes)

333. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 07:26:03 -0700
Thank you for the quick comeback on this!   Regarding DFing it, you tagged my main fear/issue-- being broadband RFI, with no signature, will it very difficult to correlate it on the mobile rig...  I
/archives//html/RFI/2016-05/msg00084.html (8,954 bytes)

334. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 08:10:48 -0700
Frank, Thank you for the suggestions here, and you have described the RFI exactly!  It looks like an elevated noise floor, by about 12 db.    I also think I hear a single tone in there, that seems to
/archives//html/RFI/2016-05/msg00085.html (11,153 bytes)

335. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 14:49:53 -0700
That little tidbit might make it a lot simpler to locate if this is one of those, thank you!  I have been seeing a very wide band of noise rotate around now and then, and I suspect it might have been
/archives//html/RFI/2016-05/msg00088.html (9,974 bytes)

336. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 16:33:48 -0700
Hi Jim, I swear you have a paper on just about every subject of interest.   I am doing a bit of RF snooping already, using the P3 fed from the K3, which shows me plus and minus 100 KHz, not much but
/archives//html/RFI/2016-05/msg00089.html (9,890 bytes)

337. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 22:41:42 -0700
Hi Kurt, I have one that I am building an upconverter for...  I will post when finished. -- 73's, and thanks, Dave (NK7Z) For software/hardware reviews see: http://www.nk7z.net ______________________
/archives//html/RFI/2016-06/msg00001.html (7,882 bytes)

338. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 23:08:02 -0700
Just finished my last "with RFI" S Meter blanket drive around and I now have a working theory of what is causing my RFI, and where it located. I have posted the maps, with S Meter reading to the web
/archives//html/RFI/2016-06/msg00003.html (8,638 bytes)

339. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Tue, 31 May 2016 23:31:45 -0700
That answers some questions...  :) Unfortunately, I don't believe I have anything to calibrate with, with the possible exception of an XG-3.  I will look over the calibration process, and see if the
/archives//html/RFI/2016-06/msg00004.html (11,006 bytes)

340. Re: [RFI] Broadband RFI... (score: 1)
Author: Dave Cole <dave@nk7z.net>
Date: Wed, 01 Jun 2016 12:58:33 -0700
Hi collective group, Thanks to all that helped in this...  I had no idea that there was a broadband RFI generator around, and now that I know it, I have a new device to dislike.  Too bad the FCC does
/archives//html/RFI/2016-06/msg00009.html (8,656 bytes)

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