Re: Topband: Spurious Signal on 1810.8

hat I have when copying AA1K right now, and he is 93.6 degrees from my location. Don (wd8dsb) -Original Message- From: Don Kirk To: topband Sent: Tue, Oct 2, 2012 9:02 pm Subject: Re: Topband: Spurious Signal on 1810.8 Signal S7 in Fishers Indiana (10 miles NE of Indianapolis) tonig

Re: Topband: 1810 kHz signal

"If someone here could take a map and plot all of the the data points, thearea from which the signal originates will become clear." I did that this morning using Google Earth, and while the data is noisy (some stray data points), so far it appears the signal is originating from the half of New

Re: Topband: W1AW

I have been looking for them for the past week and I too have not heard w1aw on 160. Even did a search on internet trying to find out why but could not find info. -Original Message- From: w...@w8ji.com To: Topband Sent: Tue, Oct 9, 2012 5:39 pm Subject: Topband: W1AW Is W1AW missi

Re: Topband: W1AW

W8JI asked : "Is W1AW missing from 160 now? I use them to calibrate directions." I just checked with the ARRL, and the 160 meter antenna was damaged in a storm and they have been off the air for about 1 week. Current plan is for contractor to install new antenna on Wednesday Oct 24th. 73's D

Re: Topband: 1810 spur status and resolution

Full and final details on the recent spurious signal and how it was located can be found on the following website. http://sites.google.com/site/wgymsignal/ 73's Rick K2XT & Don WD8DSB ___ Remember the PreStew coming on October 20th. http://www

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

Quick estimate puts the signal at a heading of approximately 75 degrees from Fishers Indiana which is just NE of Indianapolis Don wd8dsb On Sunday, December 7, 2014, Gary Smith wrote: > North to North East in Groton, CT. Using a > HI-Z triangular for that info. Could be on > a path along coastl

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

John W1FV, You and I are in very close agreement on heading because you are 73 degrees from me and we are both saying approximately 75 degrees. I can hear it on numerous web SDR receivers that are located in Europe (England, etc.). Will be interesting to see what time of day we can no longer hear i

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

Hi Mike and gang, I have been monitoring the signal during the early hours of this morning and on web SDR in England it was there at 3am EST but when I checked again at 4:20am EST it was no longer being received. The heading from my house has been very consistent at approximately 75 degrees but som

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

Copying the signal again this evening from Indianapolis area at 8:45pm EST (0145 utc) Heading is again approximately 75 deg. Don wd8dsb On Monday, December 8, 2014, Michael Walker wrote: > There is my recording here: > > https://vimeo.com/113868670 > > Mike va3mw > > > On Mon, Dec 8, 2014 at 5:

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

Hi Doug Last night I told w1fv that my estimate was 70 to 75 deg from my location in Fishers IN and a heading of 70 deg from my location clips the bottom tip of Nova Scotia, while 75 deg runs me through Cape Cod. Therefore having very strong signal in southern part of Maine fits in well with wha

Re: Topband: Boradband noise on 160 meters tracked down to apartment complex

past experience will come in handy during our investigation. Just FYI, Don Kirk (wd8dsb) On Fri, Oct 24, 2014 at 2:40 PM, Don Kirk wrote: > > Recently noticed an increase in my noise level on 160 meters (in the > direction of my 300 degree pointed pennant), and about 3 weeks ago I > tra

Topband: Boradband noise on 160 meters tracked down to apartment complex

Brown wrote: > > > >> On Sat,12/13/2014 5:35 PM, Don Kirk wrote: > >> Now going back to the contractor that installed the equipment in an > attempt > >> to better understand the hardware in the unit > > > > That smells like a Variable Speed Drive, t

Re: Topband: Boradband noise on 160 meters tracked down to apartmentcomplex

Hi Tom, Thanks, and my statement was too broad. In my case I am unable to meet the conditions you mentioned (my sense antenna would not be much closer to the noise, and it would not pick up the noise much better than the listening antenna which is pointed in the direction of the noise source). T

Re: Topband: Followup on the 1915kHz radar signal

Hi Doug, Thanks for the follow up. I was saying 70 to 75 degrees, and 70 degrees from my location puts me right where the W1FV 75 degree line passes below the location you have identified. Interesting stuff. Thanks, Don (wd8dsb) On Mon, Dec 15, 2014 at 12:42 PM, Doug Grant wrote: > > After so

Topband: Elimination of Treadmill RFI on 160 meters

For many years my wife's treadmill caused strong interference on 160 meters when it was in use, and yesterday I was able to completely eliminate the RFI using a combination of two different filters (a commercial line filter that provides both common mode and differential mode filtering, and 14 turn

Re: Topband: EP6T and outside world

>From my viewpoint things really changed on 160 meters in line with the use of Internet spotting. I'm not going to say the change is good or bad, just that it has really changed things. I enjoyed tuning up and down the band for hours on end with the objective of "the early bird catches the worm",

Re: Topband: Elimination of Treadmill RFI on 160 meters

which is my noise floor *3.5475 Mhz* No Filters : 25db over S9 With Filters : S6 which is my noise floor The 3.5250 Mhz readings indicate the filter is knocking the signal down at least 46db (and probably more). 73, Don (wd8dsb) On Thu, Jan 8, 2015 at 8:14 AM, Don Kirk wrote: > For many ye

Re: Topband: Elimination of Treadmill RFI on 160 meters

ers can say these things meet Part 15 requirements for conducted > emissions. > > Brad KV5V > > On Mon, Jan 26, 2015 at 7:22 PM, Don Kirk wrote: > >> Treadmill combination filter update. >> >> Today I replaced the 10 amp commercial filter with the 20 amp

Re: Topband: Preamplifiers

You might consider building a W7IUV preamp. It is a very easy to build boradband preamp that you can build using double sided circuit board in which you can easily cut in the pattern on one side of the circuit board using a Dremel tool, and the opposite side is the ground plane. I created a websi

Re: Topband: Out-of-Turn Callers

Hi Jim, As of the last log updates for K1N, NA was 89.8% (not 99.5%) and Europe was 7.8% of their 80 meter contacts. Also suspect the Eu numbers will continue to rise as less and less NA stations will need K1N. As a side note on 160 meters Europe is currently 8.0% of the K1N 160 meters contacts.

Re: Topband: K1N On Line Log

Hi Charlie and gang, It is not that simple and I am a guilty party of early on dupes on 160 meters with K1N because of the following. Early on 160 meters the jamming was horrible so it was impossible to hear the confirmation. Early on K1N was responding so fast that they were beating my cw break

Re: Topband: Elimination of Treadmill RFI on 160 meters

Data from another treadmill RFI success story. A few days ago Lionel (N5LB) added filters to his treadmill based on what I had done to eliminate RFI from my wife's treadmill, and below are his very successful results. Don I want to tell you my results with the treadm

Topband: HC1PF doing a great job with his Inv-L and FCP

Things are pretty slow on the topband reflector, so thought I would take the opportunity to comment about, and thank Luis (HC1PF) regarding his great signal on 160 meters using his Inverted L with FCP. I've often heard Luis this year on 160 meters and he certainly has a signal that stands out. Lu

Re: Topband: Boradband noise on 160 meters tracked down to apartment complex

he input line filters have not totally mitigated the problem (but they sure helped), and will provide an update when I have new information to share. For more in depth details see my website that's documenting this case http://sites.google.com/site/broadbandrfi/ 73, Don (wd8dsb) On Fri, Oct 2

Re: Topband: Boradband noise on 160 meters tracked down to apartment complex

> On Wed,5/13/2015 11:14 AM, Don Kirk wrote: > >> The local technician is now planning on additional changes since the input >> line filters have not totally mitigated the problem (but they sure >> helped), >> and will provide an update when I have new information to

Re: Topband: rx preamps

Hi Jim, You might want to check out my website that shows my builds of the W7IUV preamp and the URL is http://sites.google.com/site/rxpreamps/. You can download my simple artwork for the circuit board on my website (at the bottom of the page), and I just used a Dremel tool to make the traces. Do

Re: Topband: Bandpass filters for receive antennas

Hi Mike, Here is a link to a simple website I created that describes a high pass filter I built earlier this year that rejects both the LW & MW band. It was originally described in a Feb 1978 QST article. I use it in front of an SDR receiver, and really happy with its performance. Don (wd8dsb)

Re: Topband: Bandpass filters for receive antennas

Oops. Forgot to include the link. Here is the link. http://sites.google.com/site/lwmwbandrejectfilter/ 73, Don (wd8dsb) On Sun, Oct 11, 2015 at 9:03 PM, Don Kirk wrote: > Hi Mike, > > > Here is a link to a simple website I created that describes a high pass > filter I built ea

Re: Topband: 2 wl loop, worth the effort?

Hi Rob (and gang), I would like to make one point that should be considered in this discussion. A true vertical which is what I use (not an inverted L) on 160 meters is sometimes horrible on 160 meters for skywave that originates from close in (200 miles or less as an example). During contests I

Re: Topband: 2 wl loop, worth the effort?

Hi Tom, You said "Compared to a vertical, there could be 10-30 dB difference in favor of a low dipole (less than 150 ft high) within a few hundred miles.", and I was pretty much trying to make the same point but indirectly since I don't have a dipole on 160 meters. The original poster mentioned r

Re: Topband: Noise levels on 160

Hi Hank, The case I'm currently working on sounds very similar to yours but at 8 Khz separation and it's due to an AC servo drive on an injection molding machine 0.5 miles away (a visiting ham in my shack said the signal just sounded like someone tuning up his rig as it's a pretty clean and narrow

Re: Topband: ARRL book on short antennas for 160 meters

Hi Jim, Check out the following review by Guy (K2AV) that was on the topband reflector back in September of 2012. http://lists.contesting.com/archives//html/Topband/2012-09/msg00177.html 73, Don (wd8dsb) On Tue, Dec 15, 2015 at 6:49 PM, James Rodenkirch wrote: > > > Anyone read "Short Antennas

Re: Topband: Weatherproofing F-type connectors

Tim, $3.18 a piece at McMaster-Carr (18-8 stainless), part number 91862A318 . Don (wd8dsb) On Wed, Dec 16, 2015 at 3:48 AM, Tim Shoppa wrote: > Wow, stainless 3/8-32 panel nut from Grainger, part number 1JLU9, $15 for > 2. Maybe I can find something cheaper

Re: Topband: 160M EWE Problems Part 2

Hi Mark, I modeled your antenna last night, and have some comments. There is almost as much reactance as resistance at the feedpoint of your EWE based on your dimensions and termination resistor, but sounds like that's typical (per the ON4UN low band DXing book). The back null is also not as dee

Re: Topband: Stew Beef

Especially on 160 meters I don't think the S in RST has a lot of scientific value since there is no real numerical standard as it relates to true signal strength. In my own mind I have come up with a standard in which the S is directly related to the S meter reading on my radio (so I don't have to

Re: Topband: Fading

Hi Kris, If you belong to the shared apex loop Yahoo Groups click on the file tab and then look for my call sign. You will see plots that I generated looking at the front to back ratio versus elevation angle, and I think these plots might help answer some of your questions. Don (wd8dsb) On Thu

Re: Topband: K5P good job !

I was holding back on posting a comment on this topic of continuous calling (I actually typed out a response but deleted it twice yesterday) but thought I would finally hit the send key in an attempt to should shed some light on part of the problem as well as a partial solution (not a complete solu

Re: Topband: VP8STI 160 Meter Path

Larry said "propagation was interesting" and Tree said "W4ZV reported on the topband chat page that the signal seemed to be coming in from the North!" in regards to VP8STI last night. At times I could hear VP8STI in the Midwest (Indianapolis Area), but just barely, but while listening to them and

Re: Topband: K5P 1/25/16 on 160 meters

Hi Lou and gang, Lou thanks for the link to your K5P recording, and below is a link to a youtube video I made on Jan 16 while copying K5P on 160 meters that also includes comparison of my approximate half size pennant versus my 68 foot base loaded TX vertical for copying K5P (with noise floor set

Re: Topband: K5P

K5P was very strong on 160 meters this morning around 0830 UTC and QRN was very low (no static crashes due to the lack of thunder storms in the US), and I finally got into their log running my 100 watts and 68 foot base loaded vertical. I uploaded another recording of them calling CQ this morning

Re: Topband: CW160

Hi Gary, I previously was amazed at some loud stations (like 20 or 30 dB over S9) that could not hear my 100 watt station, and I thought it was due to the fact that they were using directional RX antennas, but I finally stumbled upon the issue that was most often the cause of my problem, and it wa

Re: Topband: Summer in the Northern Hemisphere

Hi Gary, As far as I can tell, it's all lightning related (regardless time of year). I suggest you look at one of the world wide real time lightning maps on the Internet (if you don't already) and that might help answer your question. When I hear static crashes I know there must be a thunder sto

Re: Topband: What have I done?

Hi Carl, Does not appear anyone has answered you, so let me give it a quick shot while between flights in Japan. I'm somewhat confused with your final L network configuration because you mentioned one capacitor, and then a second capacitor without mentioning if you still had the first capacitor i

Topband: Comments on High Performance RX Antennas for a Small Lot (Webinar)

Hi Rick, I would also think that peak radiation angle of the RX antenna versus the arrival angle of the desired signal is also a big variable that would not allow the relationship you heard on the webinar to be true under all conditions. As you said it probably is too much of a generalized statem

Re: Topband: BCB High Pass Filter

Hi Roger, Pretty easy to build your own hi pass RX filter, and here is a link to a simple website I created that documents one of my builds which might give you some ideas (I use a dremel tool to quickly create the circuit board). http://sites.google.com/site/lwmwbandrejectfilter/ 73, Don (wd8ds

Re: Topband: UN-REAL AND THE REAL WORLD 2016 FOR HAM RADIO

Hi JC, Very good webinar presentation (I watched the recorded version this past weekend), and I always enjoy hearing what you have done, and your on the air results are always very impressive. I would like to comment about the statement you just made regarding "metal box, not aluminum that allows

Re: Topband: Receive loop observations

Hi Jim, I know my following info does not directly answer your question, but I do think it's important regarding feedline isolation. I suggest you take a look at the recommendations of N6RK regarding the use of a matching transformer to feed tuned shielded loops as it isolates the feedline from t

Re: Topband: Receive loop observations

Hi Herb (KV4FZ), You said "but the 50 turns is going to be a chore" The only problem I find with winding a core with many turns is keeping track of the number of turns. What I do to solve the counting problem is that I take a zoomed in picture showing all the windings (using my smart phone camer

Topband: Sad news N5IA SK

Hi Jon, Thanks for passing this along, and how very sad. I had a nice brief chat with Milt on 160 meters CW early this Wednesday morning just as Milt was heading to bed (his Tuesday night) and will cherish our last QSO together forever. 73, Don (wd8dsb) On Thursday, June 9, 2016, Jon Zaimes > w

Topband: E51D great signal this morning (Oct 2, 2024 1127 UTC)

Hi George (AA7JV), Fantastic signal from E51D this morning into Indiana around 15 minutes before my sunrise. You were peaking almost 20 dB above my noise floor at times with lots of QSB (rapid/deep fade). I made a brief video recording of you this morning and I uploaded the recording to youtube

Topband: Good conditions on 160 meters into Europe this morning (all CW).

Woke up early this morning (0525 UTC) and saw numerous stations on my waterfall so turned up the volume and heard a bunch of familiar calls calling CQ (OT4A, G3PQA, G3YRO, G4EIM, G3OLB and a station in France). Most stations heard about 30 minutes before UK sunrise and I did work John (G3PQA) 30 mi

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