Re: Topband: Hi Z amplifiers for 160
another superb article, Jim. tnx! 73, w5xz, dan On Friday, March 13, 2020, 01:52:39 PM CDT, Jim Brown wrote: On 3/13/2020 11:13 AM, Mikek wrote: > advice about common mode filtering, This ran in National Contest Journal a year or two ago. http://k9yc.com/RXChokesTransformers.pdf 73, Jim K9YC _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: CQ WW 160 CW - SK.. ?
agree, Henk & jim.. unfortunately, trolls are everywhere, now.. regards, w5xz, dan On Tuesday, February 11, 2020, 04:01:57 PM CST, Jim Brown wrote: On 2/11/2020 1:26 PM, Henk Remijn PA5KT via Topband wrote: > I am subscribed to this maillist to learn from others on Topband. > > I would expect subjects like: propagation, antennas, operating practice, > etc. > > Not endless mails why Digital is bad, cheating is bad, etc is bad, all > others are bad. > > Try to be positive. YES! 73, Jim K9YC _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Preamp for YCCC
ed: vote 2 for hiZ preamp; has been bulletproof up here. dsw, komrade, w5xz On Wednesday, November 13, 2019, 10:24:47 PM CST, Dennis W0JX via Topband wrote: Ed, Have you considered the HiZ 75 ohm preamp? It is one of 4 recommended by John W1FV and is very reasonably priced. It is designed to preserve a 75 ohm input which will match the YCCC combiner very well. 73, Dennis W0JX _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160 skip distance
true enough. i have heard K0RF at high noon, here in north east texas 73, w5xz On Tuesday, September 17, 2019, 08:14:58 AM CDT, K4SAV wrote: A few years back guys on this forum decided to see what could be worked at noon time. There were a few stations on at that time and I worked stations up to 600 miles. That will vary with band conditions. It doesn't work well if there are no stations on the band. You can observe the same thing during a major contest when there are stations working the band during the day (usually multi-op class stations). Jerry, K4SAV _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Skip Distance
i see the same thing testing with k5lc only 2 miles away, at high noon... > 3db variations...trees blowing in the wind ??? makes you crazy...or, crazier, > in my case ??? 73, w5xz, dan On Thursday, September 12, 2019, 09:58:57 PM CDT, Arthur Delibert wrote: I certainly remember when I was a kid that we would have deep fades on a.m. BC stations coming from 20 miles away, plus or minus a few. But that was at night. Are you doing your tests in the daytime? Topband and a.m. BC frequencies are so low that I would think they’d reflect off the ionosphere even at near vertical angles of incidence. But in the daytime, I would expect the skywave to be absorbed by the D layer. — Art, KB3FJO > On Sep 12, 2019, at 10:35 PM, Guy Olinger K2AV wrote: > > Decidedly possible. > > W4KAZ RBN node is 7 miles away. There is skywave contamination almost every > evening with large drops. It can be increased or reduced by the choice of > antenna at the RX site, but not eliminated. > > The largest signal to the RBN is usually high noon. That is fudged by wet > local conditions, but very obvious in long dry spells. > > Why or how? No idea. Stuff I was taught all these years doesn't really > explain. > > You can try your measurements at summer dry high noons part of a dry week. > Where I live that would improve your results. Can't be sure that > extrapolates to your location. > > 73, Guy K2AV > >> On Thu, Sep 12, 2019 at 9:02 PM Roger D Johnson wrote: >> >> I've been running some tests on my 8 circle array with K1JB. Joe is 17 >> miles >> away and I sometimes notice deep fading on his signal. Makes plotting the >> antenna pattern very difficult. Is it possible to have skywave >> contamination >> at this short range? >> >> 73, Roger >> _ >> Searchable Archives: http://www.contesting.com/_topband - Topband >> Reflector >> > -- > Sent via Gmail Mobile on my iPhone > _ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Ethernet Interference
Trevor, for what it's worth, I have found that not all SMPS's (switch mode power supplies ) are the same; some of the small-ish wall warts spray tons of r.f. hash, others, fairly quiet...one video cam supply was incredibly noisy here; i put a spare netgear supply on it, and poof, gone.. mind you, i'm talking 160m, here.. If it's easy to swap it out, might be worth a try, anyway...and lots cheaper than ferrite.. good luck, w5xz, dan On Saturday, September 7, 2019, 02:51:46 PM CDT, fmoeves wrote: I got rid of mine by winding many turns on 31 mix.First choke was right at very first internet box. And then at the pc. Also everything that enters my pc has 31 mix choke even the power cable.I still get birdies from washing machine and treadmill but I'll get to that sometime. DXEnginering has some boxes that has rj45 connecters on them. Never used them but plug and play. Fred KB4QZH Original message From: MR TREVOR DUNNE Date: 9/7/19 2:22 PM (GMT-05:00) To: 'Moon-net Amateur Radio Moonbounce' , 'topband List' Subject: Topband: Ethernet Interference Hi AllI seen a post somewhere recently explaining that it was a waste of time putting ferrite on either utp or stp Ethernet cables, I can't remember which, or where I read it, I am trying to remove some birdies on 2m caused by home network,Anyone have any pointers, I have a large amount of cat cable around my house so don't want to replace it with the wrong type,ThanksTrevorEI2GLB_Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: 160: Digital only DXCC needed - AKA, things that will kill the hobby..................
gosh, am I the only 'old timer' who actually LIKES ft 8 ?? it has put qso's in my top band log when the band has been really crummy... and yes, i can copy cw...when the band is actually open... the jtAlert chat window can make the q's more personal, if desired... 73 W5XZ, dan On Tuesday, August 6, 2019, 02:41:46 PM CDT, Lee. KX4TT via Topband wrote: OK - A few more additions Lee DMR C4FM/System Fusion/Wires-X D-STAR EchoLink IRLP Remote Stations RemoteHams Remote Ham Radio Amplifiers Big Antennas Little Antennas OMs YLs XYLs Harmonics Sub-Harmonics Solid-State Tubes Integrated Circuits SDRs -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of W0MU Mike Fatchett Sent: Tuesday, 6 August, 2019 15:26 To: topband@contesting.com Subject: Re: Topband: 160: Digital only DXCC needed - AKA, things that will kill the hobby.. Working by the numbers and Lists! On 8/6/2019 1:24 PM, Lee. KX4TT via Topband wrote: > OK - I think I've got a good start on the > list..who knew Joe Taylor was the Antichrist?? > > > Things that will kill the hobby.in no particular > order > > Spark > CW > AM > SSB > FM > RTTY > Packet > Amtor > Pactor > Winlink > PSK31 > PSK63 > MSFK8 > MSFK16 > M-RTTY > EME > Computers > DXpeditions > Contesters > Holiday DXpeditions > Nets > OQRS > PayPal > Ebay > Ragchewers > Not enough computers > Windows > Linux > Android > MacOS > Lowband Operators > VHF operators > Satellite Operators > Microwave Operators > Parks on the Air > Islands on the Air > Summits on the Air > DXCC > WAS > VUCC > WAZ > ARRL > CQ Magazine (didn't want them to feel left out by ARRL on the list) > 73 Magazine (everyone is SK, so we shouldn't get any > pushback)... > Propagation is not good enough - I can't hear people I want to talk to. > Propagation is too good - I can hear people I don't want to talk > to > K1MAN - OK, we could remove this as the odious little man (Glenn > Baxter) is SK, but where's the fun in that?? > FCC > Appliance Operators > CB guys > QRP > QRO > Using Paddles > Using a straight Key > Using A Bug > Using A Bug as a Straight Key > Using a Keyer > QRM > QRN > DQRM - That one we should keep on the list > Kenwood > Yaesu > Icom > Elecraft > Tower Rules > JT65 > JT9 > FT8 > FT4 > K1JT > > > Guys, it's probably not a complete list..but > it's a start!! > > > 73 de Lee KX4TT > > > > > > > > > > > > > > _ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: RX antennas comparison chart
me 2...i've been using a hiZ 4square on opposite sides of my house in a small, noisy suburban location for > 10 years...Lee IS 'da man'...i was 'an early adopter..' i don't keep up with the Texas, or 5 land, rural big guns, but i try, ha! at 242 worked, still a long ways from 300 since i started over 11 years ago on 160m.. the array really does reject summer t-storm activity nicely, as well 73, good luck, w5xz, dan On Tuesday, July 30, 2019, 05:18:39 PM CDT, Gary Smith wrote: I too voice the support for HI-Z antennas. The best possible out there? That I have no idea, but after many different attempts to hear on 160, the HI-Z Triangle was wonderful and performed better by far than my efforts in a marsh, trying to put up Rx antennas. I then bought the 8 element with it's 110 foot or so diameter and it is even better. I use them both with the Diversity in the K3s. 73, Gary KA1J > I can vouch for Lee's Hi-Z designs. I am using the Hi-Z Triangular > Array at 50 foot spacing and get 6 directions. It works about the same > as a 500-700 foot beverage with better front to back. You get that > with a 50 foot triangle in the corner of your lot. If you get the > triangular array optimized for 80 it's only 40 foot spacing. > > Not only does it hear much better than my transmit antenna on a night > when there are storms I can point it away from the lightning and still > hear quite well. It has the added benefit that you don't use ground > radials at each vertical, just a ground rod for each antenna. > > Tim, K9CQ > > -Original Message- > From: Lee STRAHAN > Sent: Tuesday, July 30, 2019 4:05 PM > To: terry burge ; topband@contesting.com > Subject: Re: Topband: RX antennas comparison chart > > I have another comparison chart here on the Hi-Z Antennas website. It > has a little more information. > https://www.hizantennas.com/receiving_antennacomparison_char.htm > > Lee K7TJR > Hi-Z Antennas > > -Original Message- > From: Topband On Behalf Of terry > burge Sent: Tuesday, July 30, 2019 11:44 AM To: > topband@contesting.com; terry burge Subject: > Topband: RX antennas comparison chart > > Thanks to Bob, N4PQX I got this link to an active chart comparing RX > antennas. Thanks to K7TJR this might prove very helpful to anyone > thinking about investing in a receive antenna. Also has some active > plots for the various antennas. Terry, KI7M > > > https://www.k7tjr.com/rx1comparison.htm > > > _ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector _ Searchable Archives: > http://www.contesting.com/_topband - Topband Reflector > > _ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: FT-8 My Recent Experience
amen, Cecil.. 73, w5xz, dan On Wednesday, May 29, 2019, 5:45:49 PM CDT, Cecil wrote: It seems to be a recurring issue herecan’t shake the elitist attitude. Do what you enjoy doing...don’t beat others up for doing the same...if you find yourself alone re-evaluate... Cecil Sent from my iPad > On May 29, 2019, at 5:39 PM, DXer wrote: > > Really sad to see that this 'comet' is already back in Topband 'orbit'. > > Do we have new list members, by any chance? People that are hearing/reading > about FT8 on topband for the first time? > > Nobody went to Dayton last week? What about the Topband Dinner? I was there, > and FT8 was not an issue. > > I must have missed the 'multitude' of posts about the Hamvention. > > 73 de Vince, VA3VF > _ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: NA activity CW topband ....................
as usual, I will be qrv all season. my small, noise plagued, suburban station on 1/2 acre lot is fairly easy to maintain. My HiZ preamps have never failed from lightning events in 10 years of use, and if my Tx marconi falls down, it's not too difficult to shoot new ropes over 2 trees. heavy weather events DO call for pull-the-plug shut down, however...like this week end swl'n on 'Taliban mode' mostly ( FT 8 ), but watch cw / ssb on pan / waterfall also I do pull the trigger with some CQ's almost every night..usually on 'Taliban mode'.. 73, w5xz, dan, Longview Texas, 160m only here.. On Saturday, April 13, 2019, 1:11:26 PM CDT, uy0zg wrote: Thank you all See you at 160 ! For information - my first three qso in the season only on the antenna TX (vertical) 160m K4IQJ --01.10.2018 ---03:30 ---CW 160m K3JJG --01.10.2018 --- 03:33 ---CW 160m NV3N --01.10.2018 --- 03:48 ---CW --- Nick, UY0ZG http://www.topband.in.ua _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Dual RX SDR receivers (diversity capable)
the lowly Red Pitaya will do it.. 73, w5xz, dan On Sunday, January 13, 2019, 9:28:34 AM CST, Bjorn SM0MDG wrote: Hi gang, Are there any resources out there listing (and comparing) dual RX SDR receivers? I am interested SDR receivers with dual independent RX channels synchronised primarely for diversity RX. 73 de Björn, SM0MDG SE0X _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: ARRL DXCC - 160 Meters - Station Location and Boundary
gotta chip in my $0.02 on this, for what little it may be worth.. i have access to some remote rural property, here in texas, and in oklahoma..but k5rk and w7rh pointed out 'its not legal for dxcc if an Rx only site'but RHR is ok ( ? ) the league's requirement that my transmit antenna be there also greatly increases the cost / time / complexity commitment compared to an Rx only site; i COULD continue to Tx from my home qth, and listen from someplace quieter, with more favorable local terrain..IF it was 'legal' for DXCC.. how about 'same call area' or adjacent states / provinces instead of 500m ? presently, still struggling with man made noise in Hunter's Creek, longview, texas...a very long ways from any salt water...VERY lucky to land zone 17 recently, #38, on demon-cheater mode ( FT-8 )... atter 10 years on 160m, when i started from scratch. happy holidays, y'all, and good luck! 73, W5XZ, dan On Thursday, November 22, 2018, 8:05:50 AM CST, Bill Cromwell wrote: Hi Joe, I would have never assumed that you have acreage whether 5 acres or something the size of the King Ranch. All of those electrical belches are difficult to escape. Moving your receiver out into the swamp, forest, desert, craggy mountaintop or anywhere besides your desktop can help. Using DSP can help and maybe even more than physical isolation. Remote receivers can have both. Have you tried DSP? The software packages come with spectrum displays - much like panadapters - and I have been able to pick out Morse signals between the points of some digital crap resembling the Burger King's crown. Without the DSP there was no way to even hear that CW signal or know it existed. It's not 1956 any more. We have to do whatever we have to do to pull those signals out. Where I live my worst handicap is my 100 foot lot followed by the automotive body shop and it's welders about 250 feet from my back door. DSP is able to pull some signals out even when the welder is in use! In spite of my undersize antennas. 160 DXCC? It ain't going to happen here. I shouldn't even be on 160 meters, But I keep trying. 73, Bill KU8H On 11/22/18 7:38 AM, Joe Subich, W4TV wrote: > > On 2018-11-22 2:08 AM, kol...@rcn.com wrote: >> And this is easy to say when you have 5 acres in a semi-rural area, hi >> hi. > > With no antennas. I have not been seriously active on low bands in the > 20 years I've been here precisely because of the increasing prevalence > of the multiple remote receiver/remote station operations. However, > even semi-rural areas have significant problems with noise from poorly > maintained power lines, neighbor's plasma TVs, etc. > > Multiple remote receiver/"pick your remote station" is the scourge of > DXCC in general as it completely removes both station building and > operating skills from the equation and replaces them with the check > book. One might as well replace amateur radio with "hamsphere" or > IRL. > > 73, > > ... Joe, W4TV > > _ > Searchable Archives: http://www.contesting.com/_topband - Topband Reflector > -- bark less - wag more _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: WWV/WWVH versus ham beacons
agree 100% with Dr. Ofwiw 73, w5xz, dan On Monday, August 27, 2018 10:36 PM, Dr. Wolf Ostwald wrote: Hello everybody ! the ham band beacons dont launch the necessary ERP. The signal from WWV/WWVH equals that of a well equiped extra class station with power and a yagi antenna, at least from 10mc and up. In case of monitoring WWV/WWVH You dont need to wait until the beacons cycle around and the one u want comes up. maybe even in a QSB period. In short words, the availability of WWV/WWVH is far superior to all the FT8 / PSK and whatever stuff. Let alone that u always need the computer, plus internet. Additionally all the other stuff depends on availability, has the problem of usage of very different antenna systems and power at different locations, in short words again, not very useful for reliable comparison. May it be as it is, the NIST stations are the real Mc Coy 73 de wolf df2py _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: OT - US Hams, WWV closure
JM2C... I find WWV on 2.5 Mhz quite useful to verity the directivity of top band receiving antennas; VERY hand for quick troubleshooting... also, great fun seeing Luis, IV3PRK, QRV again, on FT 8.. 73 all, W5XZ, dan On Wednesday, August 22, 2018 10:55 AM, Jim Thomson wrote: Date: Mon, 20 Aug 2018 03:17:57 + From: Charles Moizeau To: "k...@radioprism.com" , Topband Subject: Re: Topband: OT - US Hams, WWV closure ## David does not ..get it. WWV et all is both a Time AND Freq station. I use the 20 mhz WWV to align the TCXOs in all 4 of my yaesu xcvrs. I would be dead in the water without them. BTW, if you do use WWV to align the TCXO in your xcvr, any brand, use the highest freq WWV that you can RX. I have used the 20 mhz WWV during the daytime even though it was weak, and had to use a 250 hz cw filter, the job can still be done correctly. If instead you use say the 2.5 mhz WWV.. vs the 20 mhz wwv, your error will be off by 8 X. IE: 1 hz off at 2.5 mhz = 8 hz off at 20 mhz. I can typ align the TCXO at 20 mhz wwv, within a fraction of one hz. I pre-program all the wwv freqs in the memory, cw mode, narrow filter etc, and leave the covers off. The xcvr has to be turned on for several hours before you can attempt to do the alignment. ## ANYBODY can sign the petition..from any country . I just signed it minutes ago. Who cares if they have your email address ? The cost savings they are talking about amounts to very little. It would cost a helluva lot more to dismantle them completely. Besides TIME and freq standards, WWV provides for a myriad of other features. Jim VE7RF David, Like you I support the petition. However, I will lend my name to it because I don't want to selfishly chicken out for all the valid reasons you note. Heck, it was only last week that Medicare, after many years, sent me a new card, proudly announcing how pleased they now are with the fact that cards do not need to show a social security number. Gosh, it took what, 50 years, for that revelation to occur to them! Yet, I'm still asked several times a month for my SSN, and stopped in my tracks if I don't give it. I agree with you in that I can't understand the prevailing rush to abandon one's privacy. It amazes me that almost 30 percent of this planet's population actively uses Facebook. I haven't the slightest intention of ever joining the braggarts, liars and narcissists in the playpens where they almost daily feed, feast and upchuck . However, my life has been worthily enriched by Google Earth, Google Translate, and yes, out of laziness, or as you might put it, carelessness, Google Search. I buy stuff from Amazon and use EZ-Pass on my car. I know I'm walking naked, but so is everyone else (and don't be so sure that you aren't as well). Take comfort, David, in the fact that naked or perhaps a bit less so, we're both smarter than most of the dolts and dopes out there who collect all our stuff. 73, Charles, W2SH. _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: WD8DSB & LU5OM 160 meter year long test complete
good work, don and manuel ! 73, w5xz, dan On Thursday, August 2, 2018 1:57 PM, Steve wrote: >This reminds me of the QSOs VE7SB (I think I remember that call right) and VK3ZL did. Tree..it was Bob, VE7BS in Pemberton. I would often listen during their summer dawn chats using my ICF-2010 Sony and built-in ferrite loop. Often the VKs were good copy here on the kitchen table! I think condx must have been much different back then. Steve VE7SL _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: 2nd try, you tube link, kh1, 160m, first night
https://www.youtube.com/watch?v=eeIDXom-se4 _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: KH1 in texas on 160m
i made a short video with my cellphone a few minutes after i worked the boys, the first night.. this, from Longview, Tx, suburbs, with my HiZ 4sq, looking southwest.. they were actually MUCH better copy than this sounds.. 73, w5xz, dan Baker is. In North east texas | | | | || | | | || Baker is. In North east texas Great sig, hearing well.. | | | | _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: FT-8 question
nope, my lot is 120' x 160'...1/2 acre in suburbia...and like you, different flavors of noise in different directions... I DO find FT-8 hears about 10 db better than i can on cw...FWIW... 73, w5xz, dan On Saturday, December 2, 2017 2:47 PM, Jim Thomsonwrote: Folks on FT-8 use a 2.5 khz ssb wide RX filter. FT-8 is supposed to be good for 20 db below the noise floor. I assume that means 20 db below the noise floor of the 2.5 khz RX filter ? But a 250 hz cw filter would drop the noise floor by 10 db... vs the 2.5 khz wider filter... if CW mode used. So if Im reading this correctly, FT-8 mode, using a 2.5 khz filteris really only 10 db better than a 250 hz cw filter, using cw mode ? If that is the case, being able to copy signals 10 db weaker than the noise floor of a 250 hz filter is still nothing to sneeze at. The issue I see with FT-8.. on any band is the requirement for a 2.5 khz filter and possibly being prone to qrm. Right now, my issue is extreme high noise levels on 160m... on a 100 by 130 city lot. Point a semi directional RX ant in the desired direction and its also pointed at a noise source. Seems like I am surrounded by noise on 160m. Im going to drag out by noise canceller and try some more rx experiments, b4 I throw in the towel. FT-8 might just be an option for folks like myself that are plagued with high levels of noise. Another possible option might be the use of real time remote RX. Another possible option might be using my 80m rotary dipole for 160m RX. As is, its infuriating listening to high noise levels on 160m. If I cant hear on 160m...except for the usual louder stations, Im not going to even try TX. I have tried using a pair of 500 hz filters, and also a pair of 250 hz filters, and also a 125 + 250 combo, in both my MK-V..and also 1000-D. The MK-V also has a 240-120-60hz dsp filter. The 1000-D has a tunable audio cw filter. The problem with the narrow xtal filters is... with noise levels so high, the noise... rings out the filters. The signals coming out of each filter... get stretched a bit in time duration. What Im left with is this mess whereby the desired signals + noise end up all mashed together. Typ noise on 160m, using a 2.4 filter is S9 to S9 + 10 db. Right now, Im trying to evaluate if 160m is even worth the effort required. Are the rest of you on 5 acres out in the woods ? Jim VE7RF _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Vac relay keying
hey trevor I just tell my 6500 to delay tx for 25 ms, to accommodate slow, cheap open frame relays here and there.. obviously, not QSK grade solution, but'just sayin'... 73, w5xz, dan On Wednesday, November 15, 2017 8:19 AM, MR TREVOR DUNNEwrote: Hi Jim I'm trying to detune my TX vertical on RX, I want to use the tx out on my flex 6500 to do the switching I can add in delays using the flex software which is handy, So basically when I tx I want the relay to close and when I un-key it opens and it shorts the tx antenna to ground, It's how the 26v supply with effect the flex Im worried about? I don't want anything to damage it, I have a small circuit keying the 12v relay I'm currently using but moving to 26v has me confused, Thanks Trevor EI2GLB - Original Message - From: MU 4CX250B <4cx2...@miamioh.edu> To: MR TREVOR DUNNE Cc: topband List Sent: Wed, 15 Nov 2017 13:24:55 - (GMT) Subject: Re: Topband: Vac relay keying Trevor, It’s unclear to me what you’re looking for. One transistor and a 24V power supply can activate a vacuum relay, but are you trying to key up an amplifier with the relay, ground a receive antenna, implement a QSK circuit, or what? Do you want to sequence the relay to prevent hot-switching. What kind of delay time (e.g., 10 mS) is acceptable? If you specify your needs more completely, I’m sure people on the list can recommend solutions. BTW, i don't care for “hot shot’ circuits that pulse relays with a momentary voltage spike to speed them up. They work okay on large open frame relays, but can damage small vacuum relays that have a much more fragile internal construction. In tests here, I found that they can also lead to excessive contact bounce, sometimes as many as 15 bounces. There are better solutions! 73, Jim w8zr Sent from my iPhone On Nov 15, 2017, at 2:01 AM, MR TREVOR DUNNE wrote: I'm still looking for a way to do this can't see anything on W8JI's site suitable and the fast relay link isn't what I'm after, Thanks Trevor EI2GLB - Original Message - From: MR TREVOR DUNNE To: 'topband List' Sent: Tue, 14 Nov 2017 19:51:18 - (GMT) Subject: Topband: Vac relay keying Hi Guys Can someone point me in the direction of a circuit I can use to key a 26v vacuum relay using the tx out on my rig, I have a 24v PSU I just need to know how to switch on the feed to the relay as quick as possible when I TX, Thanks Trevor EI2GLB _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Change in 160m conditions
I have the same experience as Dave, in recent years... though with a much more modest antenna farm...in suburban Longview, Tx. JM2C, w5xz, dan On Thursday, November 9, 2017 7:30 AM, JCwrote: >> It seems to me that DX conditions have been pretty poor for the past 10 years on 160m . . . << Hi Roger I see your point on things changing. However I have a different experience. The noise is up. Every day there is a new "thing" that used FVD, switching power supply and the LED's.. oh boy the LED's that generate noise up to 50 MHz Old antennas practice does not work any mote the way it worked 10 years ago. Null canceling , deep front back, and other "simple" to achieve is not enough. The last 10 years has been very different, check the K9LA presentation on WWROF archives how long the deep of solar cycle last. Carl shows the last 5 cycles last 2 years between less than 20 SSN. The last cycle 24 last almost 5 years, see page 8 here; http://wwrof.org/wp-content/uploads/2017/10/WWROF-A-Look-at-Propagation-for- the-2017-2018-Contest-Season-pdf.pdf The actual cycle may be longer and better than 2007, 2008, 2009, and 2010. I started on 160m in 1970 , for me, and the ones with new antennas with 12 db RDF or more, the last 10 years was the best ever on 160m, and here is why I say that, 1- I worked #294 countries in the last 10 years and I heard #310, the 16 countries I missed was because my 1500w was not enough to be heard on the other side. (lack of RX antenna on the DX side) 2- NX4D, Doug worked # 305 and heat probably a dozen more on the last 13 years. 3- The Waller Flag horizontal can dig signals 20 db below the same noise from the vertical TX antenna. 4- I live in a city lot with noise from everywhere. All my 160m antennas are in my back yard 100 x 150 ft. 5- Doug also has noise on the sub-division and live on 1/5 acre lot. 6- I know, and personal helped more than 50 WF installation and all antennas is performing as my original WF 7- The extra 23 years on the deep cycle 24, 2009,2010 and 2011 provided a large number of long path SSW/SSE openings with south Asia. I experiences hundreds of days with openings. The SSE/SSW path will be open soon. 8- Low RDF antennas does help and it is a game change, a simple FLAG, EWE, K9AY, SAL , all near 8 db RDF doe hear station Q5 that you can't head on the TX antenna, however 2 flags, EWE, K9AY in phase can increase the RDF near to 12 dB and you can dig 8 to 10 db more below the noise flor. 9- 1db increase on the RDF increases 2 db or more noise figure, it's a measured number with real antennas and signals on the band, not a simulation on EZNEC or calculations. you can measure it too. 10- For the new generation using digital FT8, the improvement is the same, a HWF can improve a signal -19 db to a +1 db. it means you are missing another 20 db layer of weak signals without high performance RX antenna. It point is : You don't know what you are missing if you don't have anything to compare with. Get a high RDF RX antennas! You can't have enough. The deep of cycle 25 can last 6 or more years, think about that. We are just at the door. JC N4IS _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: TZ4AM
wait a minute. I think Jeff can hear ok. He heard MY puny signal on 160m...it was not easy, but it IS possible without 10kw.. 73, good luck, w5xz, dan On Monday, October 16, 2017 10:29 AM, Victor Goncharsky via Topbandwrote: HI Stein, What my good old friend Saulius wants to say is that there's no chance to work TZ4AM from here in Central Europe unless one has 10 kW and at least full size vertical. I'm personally not paying attention to both RBN and cluster 160m TZ4AM spots anymore. On the other hand, we have worked Jeff on other bands including 6 meters without any problem. Talking about Africa, since 2013, when I came back to 160m, the following countries from that area have been easily worked: 3X, 5N, 5T, 5U, 5V, 6W, 9G, S0, TU, XT2 so African noise is not a major factor. Finally, the skip can not be "wrong" day by day and month by month. Occam's razor cuts this assumption off. >Понедельник, 16 октября 2017, 13:46 UTC от Stein-Roar Brobakken > : > >Hi >LY5W, Try go to africa and join the QRN! > >I been in africa twice on dxped, also in pacific. > >Not all spots had less than S8-s9+20 dbs noise level from time to time. > >I also operated 160m and experienced signals «skipping» over a distance.. so >he migth have wrong skip!! > > >Best Regards, >Stein-Roar Brobakken >LB3RE K3RAG > > >> 16. okt. 2017 kl. 15:16 skrev Don Kirk < wd8...@gmail.com >: >> >> Hi Sam (LY5W), >> >> Check out the QRZ page for TZ4AM for info on equipment (including antennas). >> >> Don (wd8dsb) >> >> On Mon, Oct 16, 2017 at 7:01 AM, Saulius Zalnerauskas < ly5w@gmail.com > >> wrote: >> >>> They think what I am wrong. But true - TZ4AM no copy 99% stations. >>> Wonder what trcvr he is using and other RX ? >>> >>> Sam LY5W >>> >>> On Mon, Oct 16, 2017 at 12:05 PM, Victor Goncharsky < us...@bk.ru > wrote: >>> >>> >>> >> _ >> Topband Reflector Archives - http://www.contesting.com/_topband > -- 73, Victor Goncharsky US5WE/K1WE (UW5W in VHF contests, ex UB5WE), P.E. UARL Technical and VHF Committies DXCC Honor Roll #1 (Mixed, Phone), 9BDXCC, 8BWAS DXCC card checker (160 meters). _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: JT1CO/JT5DX 160m Report de K1ZM
bravo, Jeff!! 73, w5xz, dan On Friday, June 2, 2017 10:53 AM, Mark K3MSBwrote: Thanks for that very interesting update Jeff. May I inquire as to the reason Chak no longer has antennas at his home JT1CO site? 73 Mark K3MSB On Jun 1, 2017 11:27 PM, "k1zm--- via Topband" wrote: > Hi Guys > > > Having just returned from JT5DX, I thought I would pass along a few bits > of information for use next Winter season on Topband when NA again has some > lowband PROP to JT land. > > > The team installed the following 160M antennas this past month at the > FARM SITE - JT5DX. There are no antennas remaining now at JT1CO in Ulan > Bator, eg: Chak's home location. > > > 160M - 4 element fixed yagi at 100 feet aimed at EUROPE (I do not know if > this antenna will be removed or not as it was installed primarily for the > CQ WPX CW contest and it may be removed at some point). > > > 160M 4 square array suspended from a 120 ft tower. This antenna is > switched in 4 directions using a conventional COMTEK box. This antenna > should be permanent. > > > 160M - 8 circle RX array for 160M - this antenna is also permanently > installed. > > > 160M/80M - 450m Beverage installed aimed at EUROPE (I suspect this antenna > may be removed and will not be permanent). > > > > > 80M - 4 element K1WA/K1THQ - sloping dipole array - This will be permanent > I think > > > 80M - 4 square array - This antenna also should also be permanent > > > 80M - 5 element fixed yagi at 100 feet - aimed at Europe - (This antenna > may not be permanent).- It was also installed primarily for the CQ WPX CW > test. > > > > > On TUES/WED/THURS nights before the contest I got on Topband using the 4 > el wire yagi and the 8 circle array for RX > I had the beverage on THURS night only. Both the 8 circle and the > BEVERAGE were GREAT into EU. Personally I thought the beverage had a > slight edge - but both were very good on RX. > > > On TUES night I worked about 65 EU and JA stations. > > > On WED night I worked about 100 EU/JA and Asian stations. > > > On Thurs night I worked about 120 EU/JA/Asian stations (including VK4MA > and 4X4DK at my SR peak.) > > > Tues night the call used was JT5DX - qsl via JT1CO. (The logs I think were > actually on 9A5K's computer station log - FWIW.) > > > WED night the call used was JT5LZ - qsl via K1LZ > > > THURS night the call used was JT5LZ - qsl via K1LZ > > > The overall station at JT5DX now sports an enormous amount of firepower on > 40M - 10M. > > > 6 40M yagis (including two sets of 3el full sized 40M stacks), LONG BOOM > 7el stacks on 20 and 15M, two STEPP'IR's, & many additional smaller yagis > for 15 and 10M. I think around 35 yagis in all were installed from May 9th > to May 25th by S52M and RN5M who worked his tail off to complete the task. > > > GL to all next winter season. Note that Chak does not live full time at > the farm - but I know he is anxious to do some lowband work this coming > Winter season using his new antenna arsenal! I encouraged him to do so as > best I could! > > > 73 de JEFF K1ZM/VY2ZM > > > > > > > > > > > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: W5WMU/W1WMU SK
pat was a great friend to me also. he bought ALL my antennas at a fair price when I needed to move. twice! we REALLY 'passed a good time' when we did All Asia on a whim, a couple years ago, with N8OO. I sure hope they have contests in heaven. Au revoir, cher amia bientot, j'espere w5xz, dan On Friday, May 5, 2017 12:31 PM, Gary Smithwrote: Pat, W5WMU, passed on April 6. I met him in 1985 when I moved to New Iberia, LA to start off as a new Chiropractor. I met Pat within weeks of that time and we became good friends who have been in contact monthly since then. He had the finest "shack" and antenna farm of any I have ever seen, anywhere and he loved Ham Radio and contesting to the end of his being. His 160M array was something I will never forget. Truly a wonderful friend and mentor. 73 OM W5WMU de KA1J SK http://www.arrl.org/news/noted-contester-d r-pat-sonnier-w5wmu-sk _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Bouston TX 160
k5rk, and n5dg kick my butt regular-like from that part of the state. ck in on on4kst chat 73, w5xz, dan, in Longview On Monday, April 24, 2017 9:57 PM, Richard Beermanwrote: Is there anyone active on Topband in Houston, TX who monitors this reflector? Just looking for someone locally who is interested in 160 Meters. Dick W5AK _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Phone segment for EU stations on 75 meters?
thanks Henk! what are the ssb rules on 160m in Eu, pse? too bad no WAE on 160m.. 73, w5xz, dan On Thursday, September 8, 2016 8:58 AM, "kol...@rcn.com"wrote: Is there really a "no contest" zone in the European rules on 75 meters? Or is this just by custom? What they really need is a "no crank and crackpot" zone, but I digress... 73 Kevin K3OX - Original Message - From: "Henk Remijn PA5KT" To: topband@contesting.com Sent: Thursday, September 8, 2016 2:27:15 AM Subject: Re: Topband: Phone segment for EU stations on 75 meters? Doug, Phone is from 3600-3800. No contest beween 3650-3700. There will be station using the lower part of the band, but also the higher part. If you are allowed to transmit above 3800 you should do split, listening 3625. 73 Henk PA5KT Op 8-9-2016 om 02:11 schreef Douglas Ruz / CO8DM: > Hi, > > What is the Phone segment for EU stations on 75 meters? > > I am tunning my 75/80m antenna for WAE SSB... it is very narrow (100 Khz), > so, I want to know the most active segment during contest...Resonance (SWR > 1:1) on 3625 Khz now...Is it Ok or to low?...maybe can work split... > > Thanks, > > Doug, CO8DM > _ > Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Summer in the Northern Hemisphere
for me, the real merit of my HiZ 4sq is the ability to have some side rejection, in addition to f / b...makes it possible to look away from approaching storms, and hang a bit longer.. 73, w5xz, dan On Tuesday, February 9, 2016 2:40 PM, Mike Waterswrote: Take a look at this quote from http://www.wondermondo.com/Best/World/ExtremeWeather.htm : "Catatumbo Lightning - most persistent thunderstorm -- Venezuela, Zulia The most persistent and most spectacular thunderstorm in the world is Catatumbo Lightning. This is nearly continuous thunderstorm with up to 20,000 flashes of lightning per night, seen 140 - 160 nights per year and lasting approximately 10 hours long. It produces approximately 10% of tropospheric ozone in the world." Aren't we glad that we live so far away from that awful place? :-) 73, Mike www.w0btu.com On Tue, Feb 9, 2016 at 2:23 PM, Milt wrote: > ... difficulty he had of hearing WEAK signals through the EQUATORIAL > static belt, > _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: VP8STI rumor
how about 3 cheers for the Braveheart's skipper, Nigel, for keeping team safety a priority? 73, w5xz, dan On Tuesday, January 26, 2016 3:30 PM, Jim Brownwrote: On Tue,1/26/2016 1:09 PM, Chortek, Robert L. wrote: > Anyone know if they were able to go back and retrieve the equipment? > From reading the post describing the potentially problematic ice flow, it could be days (or longer) before that could be attempted. And, I'd bet that everyone is super bushed by now. Hopefully seas are now calm so they can recover some energy. Yes, we all need to dig deep to support these guys. I'm going to do that when I do the OQRS thing. I didn't make it on Topband, but I'm in the log for six bands, including QRP on 20CW. 73, Jim K9YC _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: RFI - and lots of it
WOW, keith! that's plenty of 'excitement'.. thanks to all, for advice and recommendations. my house was built in '94, but outside the city limits, where 'code' gets a little sloppythough still in an HOA / CCR subdivision...there is PLENTY of man-made crud to listen to, and I'd just like to get rid of as much as possible, at least on my property... special thanks to K9YC for another comprehensive reference... have we beaten this to death, Tree? 73, w5xz, dan On Friday, October 30, 2015 3:04 PM, Keith Jillings (G3OIT)wrote: On 30/10/2015 19:49, Art Snapper wrote: > At the risk of sounding redundant, be very careful when messing around with > the bonding/grounding of the electrical panel. > Over the years I have seen significant current on these circuits due to a > wiring fault at the pole or on the drop to the house. Indeed! We used to own a cottage half way up a mountain in North Wales. The incoming "earth" wire from the pole was at something like 120 volts above ground (nominal voltage is 230). We found out when my wife was cleaning the porch floor, standing outside the front door, and got a shock through the mop. We thought we had a separate earth to a spike in the ground (we did, but it wasn't properly connected). I poked that with an insulated screwdriver, there was a flash and a loud bang, and the house earth dropped to zero potential. The lights in a house down the road went out. Never did hear any more about that. Keith _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: RFI - and lots of it
ok...another thing i've wondered about... every bathroom and utility sink plus the kitchen have 120 vac outlet quite nearby.. should i tie the green a.c. wire to the plumbing at each? w5xz On Thursday, October 29, 2015 5:36 PM, Guy Olinger K2AV <k2av@gmail.com> wrote: It would really be something if in-the-slab copper was floating electrically. I have seen the copper connected with a heavy wire out of the slab connected to the ground bus in the main electrical panel. The other end of the wire came up out of the slab next to the bonding point with the copper pipe in a weather protected spot. If there is a question you should get a local licensed electrician who can check it according to NEC + local practices. Local practices may specify where and how the pipe is connected to the power ground. You might want to check if an ohmmeter shows a dead short between the spicket copper pipe and the power ground. If it ain't connected, you need to get that fixed right away. 73, Guy K2AV On Thursday, October 29, 2015, Jim Brown <j...@audiosystemsgroup.com> wrote: > On Thu,10/29/2015 2:45 PM, Dan Edward Dba East edwards wrote: > >> all my plumbing is copper, hot and cold water, in the slab. and, i have >> an outside water spigot just a few feet away from my service >> entrance...should I tie it in too ?? >> > > NEC REQUIRES that it be tied in. > > 73, Jim K9YC > _ > Topband Reflector Archives - http://www.contesting.com/_topband > -- Sent via Gmail Mobile on my iPhone _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: RFI - and lots of it
'central point' being my main service breaker box? it's a good distance away from any plumbing... On Friday, October 30, 2015 12:28 PM, Jim Brown <j...@audiosystemsgroup.com> wrote: No, that should be done at a central point in each premises, and only when the plumbing is metallic and conductive to the earth. 73, Jim On Fri,10/30/2015 9:58 AM, Dan Edward Dba East edwards wrote: > ok...another thing i've wondered about... > every bathroom and utility sink plus the kitchen have 120 vac outlet quite > nearby.. > should i tie the green a.c. wire to the plumbing at each? > w5xz > > > > > On Thursday, October 29, 2015 5:36 PM, Guy Olinger K2AV ><k2av@gmail.com> wrote: > > > It would really be something if in-the-slab copper was floating > electrically. I have seen the copper connected with a heavy wire out of the > slab connected to the ground bus in the main electrical panel. The other > end of the wire came up out of the slab next to the bonding point with the > copper pipe in a weather protected spot. > > If there is a question you should get a local licensed electrician who can > check it according to NEC + local practices. Local practices may specify > where and how the pipe is connected to the power ground. > > You might want to check if an ohmmeter shows a dead short between the > spicket copper pipe and the power ground. > > If it ain't connected, you need to get that fixed right away. > > 73, Guy K2AV > > On Thursday, October 29, 2015, Jim Brown <j...@audiosystemsgroup.com> wrote: > >> On Thu,10/29/2015 2:45 PM, Dan Edward Dba East edwards wrote: >> >>> all my plumbing is copper, hot and cold water, in the slab. and, i have >>> an outside water spigot just a few feet away from my service >>> entrance...should I tie it in too ?? >>> >> NEC REQUIRES that it be tied in. >> >> 73, Jim K9YC >> _ >> Topband Reflector Archives - http://www.contesting.com/_topband >> > _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: RFI - and lots of it
I, for one, wonder how good my service entrance ground is...mine is probably 20 years old, and while the top looks ok, there's no way to know what's going on down 4, 6 and 8 feet...my utlities are underground, if that means anything... as a starting point, should a guy drive a new one? or 2 or 3, spaced some distance apart? ( gosh, top band sounds lousy this fall, for me, anyway...sigs are well down from normal strength..) 73, w5xz, dan On Thursday, October 29, 2015 8:17 AM, Matt Murphywrote: I'm in the process of setting up my station in a new QTH and plan to install a station ground at the cable entrance. Tom, is there a best practice for bonding to the mains ground? Any approaches to avoid? 73, Matt NQ6N On Thu, Oct 29, 2015 at 7:07 AM, Tom W8JI wrote: > I have and electrician coming next week who says he will check things out >> and first of all ground the breaker panel to two ground rods 7 feet apart. >> I thought the grounding was put at the meter but he says they don't do that >> anymore. I think the old meter, before we had the new one put in had a >> ground rod beneath it but nothing now. The only ground I could find to the >> panel is a skimpy wire going to a water line. All of which looks corroded >> etc.. I know many dollars were spent on renovation and restoration of this >> place but I'm afraid to much emphasis was placed on cosmetic and not enough >> on electrical as I look more closely, pretty depressing. > >> > > Jim, > > Just keep in mind when you do the work, the quality of the house ground > to earth is far less important than having everything entering the house > being bonded to act like one common point. > > One of the biggest mistakes in amateur radio grounding over the decades > has been having the shack antenna and control cable entrance ground > non-existent, and the common shack desk equipment ground to an independent > ground. > > The shack ground must be bonded to the mains ground so everything entering > the house is as close to one potential as you can get it. > > Correcting things may not cure your RFI, but it always makes things much > safer and more reliable. > > 73 Tom > _ > Topband Reflector Archives - http://www.contesting.com/_topband > _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: RFI - and lots of it
all my plumbing is copper, hot and cold water, in the slab. and, i have an outside water spigot just a few feet away from my service entrance...should I tie it in too ?? just wondering, w5xz, dan On Thursday, October 29, 2015 1:39 PM, Tom W8JIwrote: >I have driven copper ground rods in about ten years ago, then wrapped a >couple turns of #4 wire around the top and soldered that to the rod using >plumbers solder. These connections are as good today as the day I soldered >them. Plumbers solder works very well outdoors for me. I use it on >everything outdoors now. > > Dave, W5UN 80 year old broadcast radial systems are still good with silver solder connections. My 318ft tower gets whacked all the time and has silver soldered connections. They never melt. Even RF radials that augment the lightning ground, which are plumbers solder #16, do not get hurt. The main reason NEC and other codes don't like solder is they don't trust people to know how to solder. Of course the heat is I^2 R times the time. It isn't just current, it is joules. If the solder connection is good with low resistance, it will not get hot. Also, there is no possible way a rod system could stay anywhere near zero volts in a strike. Almost all of the protection to equipment and the house itself is by the common point connection of things entering the house outside the house. We certainly need the rods, but most of the protection comes from bonding of all things entering the dwelling. Very little of the protection inside the dwelling actually comes from the rods. With a tower or tall structure likely to be hit, the structure ground can be a major player. That ground keeps strikes from raising the base voltage so much, and reduces common mode into the house grounds. It takes a pretty big ground system to not elevate in voltage in hits. A couple rods will not do it, even if they ohm just a few ohms at low frequencies. 73 Tom _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: ARRL 160m contest and DX Window?
I sure remember hearing JA7NI pounding thru on 1909.. 73, w5xz On Tuesday, December 2, 2014 3:52 AM, Petr Ourednik indi...@xsmail.com wrote: Hi all, the split JA operation schema for decades ago was: JA TX 1907.5 - 1912.5kHz and listen for rest or worls in between 1820 - 1825kHz. This JA window 1907.5 - 1912.5kHz has been not used in contests from 1999 by JARL because the band was too narrow. The SSB was not permitted. I worked several JA topbanders over there split down to 1820 - 1825kHz. According to the Ministry's announcement, effective April 1st 2000, additional 15kHz, i.e. from 1810 kHz to 1825 kHz, has been allocated for amateur radio use. The announcement was available in the Japanese language at http://www.mpt.go.jp/top/public-comment/public-comment000207.html but it does not work I guess. You might be interested in JA band plans which is available here. http://www.jarl.or.jp/English/6_Band_Plan/JapaneseAmateurBandplans20090330.pdf Some additional notes to the figure: NB Phone = SSB, AM NB Image = SSTV NB Data = RTTY, PSK31, JT modes etc (but no RTTY on 2200 and 160m) WB Phone = FM WB Data = Packet (tnx to Rin, JG1VGX) Regarding the DX window down on TB I am trying simply not calling CQ in between 1825 - 1835kHz from EU. In fact my CQ is even not so effective from my fixed QTH as my receiving performance is not the best so I would not like to bother on the band when I am not able to hear weak sigs coming back. In general calling CQ with just few sec of hearing to repeat CQ again is terrible technique which is not applicable on TB I guess. When I am calling CQ I am trying to listenning with switching between all of my RX antennas combination to ensure that nobody is calling me... so in my case I need to listenning between each CQ at least 30-45sec I guess. Also there are bad spots (forbidden QRG) on TB which should be avoided for CQ. 1820 is often jammed by radar from China in JA 1818 strong QRM from local GPS correction on 1818 in ZL To keep the Gentlemen band (better to say give it back to the old ages Gentlemen shape) we should strictly observing basic gentlemen agreement... My 2c... 73 - Petr, OK1RP http://160mband.blogspot.com On Mon, Dec 1, 2014, at 09:28 PM, JC wrote: Mike The DX Windows dated few decades ago, from the time US stations used to transmit 1800 to 1810 and listening in the DX windows 1825 to 1830 , all because the band was packed with LORAN signals, to work JA the DX window was 1907 to 1913. I may be wrong with some frequencies, Call CQ and tuning was actually try to find someone calling you back somewhere in the band. The original Idea is the DX (not US) to call between 1830 and 1835 but QSX down or up to RX. What is not part of the Gentlemen band is calling CQ and listen 3 seconds and call again and listen 3 seconds, .. There is no way to copy or to work any DX, just calling like a cw machine gun to hold the frequency . This kind of operational practice very common just keep the frequency busy with no QSO's and at a very low QSO rate. It is very common to hear and most of the time work DX station below those alligator's contest stations parked in the DX window. QRM the QRM'ers does not make it right as well, as we elected to be part of the Gentlemen band we should demonstrate it by example and some talk during eye ball QSO's. 73's N4IS -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike Waters Sent: Monday, December 01, 2014 10:27 AM To: topband Subject: Topband: ARRL 160m contest and DX Window? The ARRL 160 meter contest is this weekend. I know there has been a lot of controversy in the past about the 1830 to 1835 segment (the so-called DX Window). I understand that if I am in the USA, the right thing to do is to NOT park in that window and call CQ (but I can answer a CQ from a DX station on another continent or island). The rule at http://www.arrl.org/160-meter simply states *6.1. *The segment 1.830 to 1.835 should be used for intercontinental QSOs only. Maybe some of the more experienced Topbands could clarify this. 73, Mike www.w0btu.com _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: New RF interference killing RX at my QTH
I also have an issue with noise on top band. In my case, it's crud from a local AM BCB, KEES 1430. Took forever to figure it out, but when it starts, I put my 160m top band receiver in AM mode and can hear faint modulation. With my HiZ 4square, ( you know, the one that's not supposed to work since the 4 verticals are on opposite sides of my house? ) I can clearly tell it comes from the SW direction, and it only appears when KEES goes QRO at sunrise. Switch to NW, it goes away; ditto NE, SE..and, of course, I NEED to look SW at s/r for skew path new ones !!! By looking at the panadapter on my flex 6500, I can see KEES; they're not even THAT strong, (around -40 dbm) but the crud is definitely there, only down about 30 db from the main signal. It takes multiple phone calls, emails, mean facebook posts, and text messages to KEES and the FCC to get anything done about it. Same thing happened couple years ago... 73 good luck, W5XZ, dan, Longview, Texas On Saturday, November 8, 2014 4:33 PM, Agelos-SV3RF via Topband topband@contesting.com wrote: ps...It seems no links allowed. Anyway I found the radio under 3 different brand names. FUJION F-2000A, ROYAL GUIDE RG-705, and, AQUAGUIDE-705. This belongs to my previus post. 73' s de SV3RF Agelos From: Goldtr8 (KD8NNU) gold...@charter.net To: topband topband@contesting.com Sent: Saturday, November 8, 2014 7:33 PM Subject: Topband: New RF interference killing RX at my QTH Dear Topband Group, I need to make a noise finding antenna that I can take in my vehicle to look for a source of noise on 160m and 80m bands. My google searches have not yielded much information on something I can use on these bands or what I found was not clear to me on how to make one. My plan would be to make something and then use my mobile setup to drive and try to find the source. Please any recommendations will be highly welcome. What I do believe is that its something that gets turned on in the night hours as its not there during the day and there are times at night when it goes away. Thank in advance for your help. Cheers Don ~73 Don KD8NNU 2014 3905CC Top Gun :-) -.- -.. ---.. -. -. ..- _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Skimmer calibration
the gw8izr skimmer seems pretty good to me...dr1a also...both, better than average, IMHO a belgian one also ( can't remember the call..) couple in JA also.. 73, w5xz, dan On Tuesday, August 19, 2014 4:33 AM, Mike Waters mikew...@gmail.com wrote: When I last investigated, all the skimmers and Web SDRs that were outside of North America all had terrible receive antennas for copying DX signals on 160. (And who knows how many of them are in quiet locations?) When I say terrible, I mean small magnetic loops, very short whips, low dipoles, a random end-fed wire, etc. No phased arrays or Beverages, and not even a Flag, K9AY, EWE, etc. Does anyone know if that is still the case? 73, Mike www.w0btu.com _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: anybody in Eu using JT-9 or JT-65
alexey yes, i understand the thinking, re JT-9 / JT-65; best QSO you never heard as W4ZV said... and, 'if i did not hear it with my ears, it does not exist, I can not work it, it doesn't count' also.. still, ARRL DXCC desk doesn't care what mode we use, right? sowhat the heck? as jim, K9YC pointed out, directional receiving antennas, 'reasonably efficient' transmit antennas, and receivers, transmitters, amplifiers are still necessary...I am just adding K1JT's impressive software to the toolbox. I'm just trying to work something on what sounds like a dead band. Today, it was impressive. 20 mins past sunrise, i was still de-coding vk3xq ( and he heard me ), and the band sounded 'dead'I rarely work any dx 5 minutes after sunrise on top band, from this QTH.. reception in suburban locations is challenging. Are multi-acre, deep rural locations a requirement for peer approval when chasing dx on top band? I hope not. To be sure, when signals become readable again, I will be back on cw... 73, w5xz, dan On Tuesday, August 12, 2014 10:01 AM, ALEXEY OGORODOV ua4...@mail.ru wrote: Hello brethren, I´m ready to be crucified yet I couldn´t resist asking a question: What's the value of JT modes qso for a dxer? IMHO Digimodes undermine the value of low band dxing. I don't arfue over reliability of the modes and their help in extension of hamradio capabilities in general yet JT and such do not require much from the operator. With all due respect, Alex _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: anybody in Eu using JT-9 or JT-65
greetings to pass the time through the summer doldrums, I've been playing with weak signal digi-modes. Near sunrise, am having fair luck to VK, w jt-65... VK3XQ comes through almost every day.. but, at Eu sunrise, my cq's go un-answered, even with kw power. Is the band really THAT bad to Eu, still? from a noisy suburban location, WSJT-x seems to help... 73, W5XZ, Dan _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: VK3ZL SK today
I too will surely miss bobby; we had a lot of fun making contacts almost all summer long, for several seasons. He nearly always heard my 'wet string' short tx marconi. His expertise with GS35b's was well established, and he shared freely all relevant technical advice. RIP VK3ZLW5XZ, dan On Tuesday, July 8, 2014 8:21 AM, W2PM via Topband topband@contesting.com wrote: RIP And 73 Bob. Some of the best qsos on 160. Copied his top hat design. Gone but not forgotten. Sent from my iPhone On Jul 8, 2014, at 1:15 PM, dl8yhrfrank--- via Topband topband@contesting.com wrote: RIP BOB Best wishesyou was a great operator... vy 73 Frank -Ursprüngliche Mitteilung- Von: Eduardo Araujo via Topband lt;topband@contesting.comgt; An: Topband List lt;topband@contesting.comgt; Verschickt: Di, 8 Jul 2014 5:44 am Betreff: Re: Topband: VK3ZL SK today Very sad news indeed. We will miss you Bob. Rest In Peace Eddie, LU2DKT -Mensaje original- De: Topband [mailto:topband-boun...@contesting.com] En nombre de LB3RE LJ3RE Stein-Roar Brobakken Enviado el: lunes, 07 de julio de 2014 11:12 p.m. Para: David Raymond CC: topband@contesting.com; SidShusterman; robert briggs; Jean Briggs; K3JJG; t...@kkn.net; Bob Garrett; Bernie McClenny, W3UR Asunto: Re: Topband: VK3ZL SK today Sad to hear this.He was always on the topband and made it clear that the band was open, he will be missed. 73s SK ---Sent by iphoneLB3RE LJ3RE K3RAG ex: LA6FJAwww.lb3re.com ~ Rag ~ Stein Roar Brobakken e-mail:post@lb3re.comhttp://la5o.wordpress.comwww.contesting.no Bob was truly a remarkable person. Not only did his homebrew skills far surpass the vast majority of us but he also put out a remarkable signal with a modest station. A lot of topbanders may be unaware that Bob's signal came from a homebrew 42' vertical (yes, forty two foot) . Capped off with a hefty top hat and a very good ground radial system, he was able to work the world daily. He and I had other shared interests and enjoyed exchanging emails. I will surely miss his friendship and his signal on 1824.5 on those cold, winter morns. 73 Bob. . .rest in peace OM. Dave, W0FLS - Original Message - From: SidShusterman To: topband@contesting.com ; Jean Briggs ; robert briggs ; Bernie McClenny, W3UR ; Bob Garrett ; K3JJG ; David Raymond ; t...@kkn.net Sent: Monday, July 07, 2014 6:23 PM Subject: VK3ZL SK today I received an email from Jeannie this afternoon. Bob succumbed to the effects of bladder cancer today. Bob was many things. He was one heck of a builder. His amplifiers won the SERG homebrew competition so many times that they finally gave him a lifetime achievement award. He was a fixture on TopBand and gave many their first VK QSO. He was also a beacon until recently. If there was any propagation at all Bob was there to work it. Over the years Bob and I and I am sure some others developed a relationship that transcended ham radio. I found that Bob was a fire communications officer who provided essential communications and control for the intense fires that happen in that part of Australia amongst other interests. Above all Bob was our friend. Bob told Jeannie his wife he wanted the following on his grave marker: Robert William Briggs.. ..loving husband of Jeannie.. ..17 Oct 1942 ---7 July 2014.. ...vk3zl s k.. and that is what she will do. Jeannie can receive your emails at both her email address: Jean Briggs lt;jab...@bigpond.comgt; and also she is keeping Bob's account open: vk...@bigpond.com Sid K3SX _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: PHASING SHUNT FED TOWERS
I miss Earl too...he always told me I was loud...HE was always loud, and usually working somebody i couldn't hear...he also did some great work with Flags, early on... 73, w5xz, dan --- On Fri, 5/31/13, Carl k...@jeremy.mv.com wrote: From: Carl k...@jeremy.mv.com Subject: Re: Topband: PHASING SHUNT FED TOWERS To: Jon Zaimes AA1K j...@verizon.net, 160 topband@contesting.com Date: Friday, May 31, 2013, 12:04 PM - Original Message - From: Jon Zaimes AA1K j...@verizon.net To: 160 topband@contesting.com Sent: Friday, May 31, 2013 4:31 AM Subject: Re: Topband: PHASING SHUNT FED TOWERS On 5/31/2013 12:43 AM, Tree wrote: K6SE was the first guy I saw doing this - with much shorter towers than mine. Somewhere in my files I have a copy of a four-page letter Earl sent to K2UU describing in detail the K6SE phased towers -- one of the few multielement transmit arrays in use on the band in those days (1970s-80s). If I recall correctly, they were HDBX style 64-foot self-supporting towers spaced about 80 feet. One had a large tribander on it, and the other a 2-element shortened 40-meter yagi. Earl described how he raised and lowered the 40-m. beam on its mast till that tower resonated at the same spot as the other one. He used identical shunts and a coax delay line to achieve the correct phasing. His letter included a formula for calculating this delay line based on the distance between the towers. This played quite well. We chatted many a night and Earl would flip the switch and I'd see 25 db f/b or so. 73/Jon AA1K Delaware I sure miss Earl. One fine gentleman that wasnt afraid to share details of any of his designs and answer questions with even more details. Carl KM1H All good topband ops know how to put up a beverage at night. _ Topband Reflector All good topband ops know how to put up a beverage at night. _ Topband Reflector
Re: Topband: ZS4PB -SK
very sad... dump it in... he used to say, when he knew there was a pileup for him.. he was almost always real loud...and quickly drew a crowd...told me once he enjoyed listening to 'The Louisiana Hayride' on the AM BCB many years ago... please advise the family Pieter will be missed around the world...73, w5xz, dan --- On Thu, 11/8/12, Bernie van der Walt ber...@internext.co.za wrote: From: Bernie van der Walt ber...@internext.co.za Subject: Topband: ZS4PB -SK To: topband@contesting.com Date: Thursday, November 8, 2012, 7:28 AM Sad news. Pieter Botha [86] passed away last night 7 Nov 2012 at 18Z ZS4PB, widely known as The African Cowboy, was one of Africa's best known DXer's in the last 60 years. His health deteriorated rapidly in the last few months and he and his family moved to a care centre in Stella, north of Vryburg just two weeks ago. He spent a lot of his radio time on topband so I think it is appropriate to mention his passing here where some of his old friends may still reside. He will be missed. I will attend his funeral on Saturday at 09Z on the farm. I will relay all messages from his ham radio friends to his wife and children. Regards Bernie, ZS4TX ___ Topband reflector - topband@contesting.com ___ Topband reflector - topband@contesting.com
Topband: Fw: W5DC, SK...
--- On Thu, 6/7/12, dan edwards w...@att.net wrote: From: dan edwards w...@att.net Subject: W5DC, SK... To: dan.n.edwa...@sbcglobal.net Date: Thursday, June 7, 2012, 3:28 PM W5DC, Duncan Carter. SK 6 / 6 / 12 He earned a B.S. in Electrical Engineering from L.S.U and also studied at MIT and S.M.U. He received several patents on antenna design and was self employed in the Mechanical and Electrical Engineering fields since 1972. He founded Vibrotek Vibration Technologies which partnered with VibroAcoustical Systems and Technologies, Inc in Russia. He also worked for Collins, and Hy-Gain. First time i heard Duncan I was in Optometry School, in Forest Grove, Oregon, on 75m SSB. He was ridiculously loud and working JA's. around 1976, or so. I had no idea we would later meet. I also did not know he was using a pre-cursor to the now popular 4 square. His version was a parasitic array, with 2 driven elements and 2 reflectors; spacing was equal at 0.2 wavelengths, and the array was 4 verticals, in a square. it minimizes the ground losses... he used to say. 4 1/4 wave feedlines, tied in parallel at the center, and relays at the elements to select a loading coil and short a feedline, or select a feedline as a driven element. Later, when i moved to Baton Rouge in 1979, we met. He liked the low bands and liked cw dx contesting, so we hit it off immediately. Duncan had a pre-cursor to the 'Waller Flag' at that time, for 160m. He used a rotary pair of small, resonant shielded loops, and introduced me to what is now called 'cross-fire' phasing. Mounted near ground level, the 2 loops were on a pvc boom, which was rotated with a Ham-M. He said it had a pattern like a 3 element yagi.on 160m !!! Duncan was a master at locating huge rolls of low loss feedline, and sharing... Even though Duncan was a 'quad guy', he encouraged me to explore the then-new W2PV designs. I still contend Lawson's 4 element, 3/4 wave boom designs produce the most db's for the least dollars. Duncan warned me about gamma matching: it is very easy to match the losses, if you're not careful...so I stuck with split driven elements, and hairpin matches; the 4 / 4 stacks on 20 thru 10m were a real treat, back when I had 3 acres out in the country as a bachelor.Duncan was kind enough to loan me his General Radio 1606a rf impedance bridge to help understand the impact of guy wires on rotary, side-mounted yagis. Soon thereafter I was ordering Phillystran...at least for the top half or so of my tower guys.. I know Duncan was instrumental in getting Bob Taylor, WB5LBT (SK), successful results with a moonbounce array of quads on 2 meters. Bob was, i think, a 'rock star' on the moon, from his suburban lot in Baton Rouge. Duncan had magic fingers with long boom 2 meter quadsand we all knew it... I also know Duncan was instrumental in developing some long boom HF quads for Cajun Iron Man, Emeritus W5WMU. Perhaps Dr. Sonnier can elaborate on this.. Later, we both left La. but stayed in touch intermittently. In his later years he became a k-3 guy, ultimately assembling an entire ' K-Line '... When I told him about LoTW, he was overjoyed. the curse of the dx contester has been lifted !!! (paper QSL's) Never mind that I still haven't set mine up yet. He owned a microphone but heavily preferred CW...I'm sure he could send and copy 35 wpm in his sleep... Duncan was a faithful spouse and father to his family. He was generous with his time and resources. We will surely miss him dearly. If I make it, I hope to see him upstairs one day... 73 Dunc W5DC de W5XZ sk pay attention to the losses he always said... ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
Topband: 9M0L
wow, the op on 160m is doing a GREAT job... not sending too fast...listening carefully...not quitting...looking for stateside at the right time... pretty good signal this a.m. in north east texas on a noisy 1/2 acre sububan lot.. 73, w5xz, dan ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
Re: Topband: Phased Vertical Dipoles
rich while it was not a driven array, we tried a parasitic one. we had 3 1/2 wave slopers up at w5wmu...the guy wires on the 200' tower were NOT broken up, though, so, i hung the dipoles 1/2 way between the guys..cut the feedlines like the old K1THQ 5 sloper system from yesteryear..worked fair...directivity pretty 'ho hum'.. seemed fair on Txlike Victor N8OO / UH8EA said... is not 4 square... hi we're down to a single sloper now, though, on europe...the 5/5/5/5 for 20m got priority... FWIW, 73, w5xz, dan --- On Mon, 10/10/11, Rich Chatelain rich_k...@gphilltop.com wrote: From: Rich Chatelain rich_k...@gphilltop.com Subject: Topband: Phased Vertical Dipoles To: topband@contesting.com Date: Monday, October 10, 2011, 11:05 AM Hello All, I am working on improving my TB ability this season. I have installed 2 sloping ½ wave dipoles. Is there anyone on this reflector that is using the Comtek ABC-4 with a phased pair of antennas that I might take advantage of there experience and ask them some pointed questions? Rich K7ZV rich_k...@gphilltop.com mailto:rich_k...@gphilltop.com ___ UR RST IS ... ... ..9 QSB QSB - hw? BK ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
Topband: Fw: RE: ja7qvi de w5xz
Tac San in a lowband diehard, like a lot of us. just got this today. glad to knowhe is ok.. 73, w5xz, dan --- On Mon, 5/2/11, dan edwards w...@att.net wrote: From: dan edwards w...@att.net Subject: Fw: RE: ja7qvi de w5xz To: dan.n.edwa...@sbcglobal.net Date: Monday, May 2, 2011, 9:22 AM --- On Mon, 5/2/11, TAC ja7qvi ja7...@coffee.ocn.ne.jp wrote: From: TAC ja7qvi ja7...@coffee.ocn.ne.jp Subject: RE: ja7qvi de w5xz To: 'dan edwards' w...@att.net Date: Monday, May 2, 2011, 2:03 AM Hello Dan W5XZ At last the Internet was connected today.And I read the email that had a gentle you.Thank you for worrying.It was attacked on March 11 by a major earthquake and a tsunami.Awful rolling continued for a long time, and a massive tsunami hit it afterwards.There was the forecast news of the tsunami invasion after an earthquake, and I escaped into a refuge, and the family was safe.My house was around 1 mile away from the shore.I did not possibly expect that a tsunami attacked my home.My house and all the car and the radio facilities lost it, too.Many acquaintances, a friend died.My family is happy safely now.For around two weeks, I was in the refuge, but move to the parents' house now.I will be back for radio again.It will revive within one year.In addition, let's meet you.I look forward to that the day comes. 73 Tac JA7QVI From: dan edwards [mailto:w...@att.net] Sent: Monday, March 14, 2011 10:10 AM To: ja7...@jarl.com Subject: ja7qvi de w5xz Tac-san i am praying you and your family are ok big 73 from texas, w5xz, dan ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
Topband: K4IQJ is ok in Alabama..
Dick dodged the bullet by being on vacation down at the gulf coast, when allthe tornadoes blasted throuigh Alabama recently. Dick is another top band die hard, who is on almost every morning... 73, w5xz, dan ___ UR RST IS ... ... ..9 QSB QSB - hw? BK