Topband: Fw: Remotes
- Forwarded Message - From: luc kerkhofs To: Steve Harrison Sent: Monday, February 5, 2024 at 06:20:03 PM GMT+1Subject: Re: Topband: Remotes Same problem with people using web SDR radios . No way to compete with home made receive antennas. You dont needto invest time and money anymore . All you need is a magnetic loop in your 3000 square feet backyard and claim it works fantastic . LucON4IA On Monday, February 5, 2024 at 06:04:47 PM GMT+1, Steve Harrison wrote: This growing practice of hiring a remote in another call area far from your own QTH, then working wild and exotic DX wile preventing deserving locals operating from their home stations from working same DX, is abominable and just plain unethical. I lost what respect I had for a couple people I heard work 9M2AX this morning when I heard them do that. I heard another guy do that last week that I've only just barely heard on 160 in the past across the country; he was at least two hours beyond his own sunrise, so obviously hiring a remote, probably that big one up near Carson City, Nevada, same station these two guys this morning were probably using. The week before last, there was another east coaster, at least 2-1/2 hours past his sunrise, who did the same thing at, most likely, the same station. I bet the owner of the station is advertising it as "WORK 9M2AX on 160 from here!!! Only $XXX for a half hour!!". I hope these guys are putting an asterisk on their 9M2 QSL cards to indicate they didn't work Ross from home; but I won't hold my breath that they do. Steve, K0XP _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: TZ4AM
and don t forget it is also very frustrating for Jeff to know that there are many calling that you do not hear . which reminds me when we were operating from EP6T surrounded by 150 battery chargers and 500 chinese Led lifghts keep up the good work Jeff LucON4IA On Monday, October 16, 2017 6:42 PM, Ham Hicks wrote: Yes, I agree. It's supposed to be fun. Let the broadcasters be the ones to get upset about reception and propagation. 73s Ham KB4BR -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Ken Claerbout Sent: Monday, October 16, 2017 12:11 PM To: Topband@contesting.com Subject: Topband: TZ4AM I thought 160 Meters was the Gentleman's band? Some of you need to take a deep breath and relax. Surely you have more important things in your lives? Jeff knows he has an RX problem and he's working on it. What more can he do? Topband is difficult and frustrating from many locations. A little understanding and encouragement goes a long way. 73 Ken K4ZW _ 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: 1 center point to ground all 8 beverages??
Very interesting, reading as always, This brings me to another question, how do I need to handle grounds in a switch box with 3 antennas ? 73 Luc ON4IA On Tue, 3/22/16, Bill Tippett wrote: Subject: Re: Topband: 1 center point to ground all 8 beverages?? To: "topband" Date: Tuesday, March 22, 2016, 10:19 AM W3LPL: >Another solution is to use relays to connect only the selected Beverage to the ground rod and disconnect the other seven. I've done this for 31 years from 3 different locations with no problems. From a 2011 post on this subject: ZL3IX wrote: >* As long as your relays have decent isolation, even for high impedances,* it may even be better to switch the Bev wires themselves. That way you don't share the ground at the feed end, and avoid any common impedance coupling. I agree. I've done this since installing my first set of 7 Beverages in 1985 arranged like wheel spokes and have never noticed crosstalk problems. I even sometimes switched two in parallel to listen in two directions simultaneously in contests (NE and W when I was in Colorado). Now I prefer diversity (Beverages on one RX and an RX 4SQ on the other RX) for contests. 73, Bill W4ZV _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Topband: Fw: Re: Out-of-Turn Callers
--- On Thu, 2/5/15, luc kerkhofs wrote: > From: luc kerkhofs > Subject: Re: Topband: Out-of-Turn Callers > To: "KE1F Lou" > Date: Thursday, February 5, 2015, 5:24 PM > Sorry Lou, but I disagree with that > comparison , considering the path between EP6T and NA, you > should > compare the number of QSOs between K1N and JA > > 73 > Luc > ON4IA > > > > > On Thu, 2/5/15, KE1F Lou > wrote: > > Subject: Re: Topband: Out-of-Turn Callers > To: topband@contesting.com > Date: Thursday, February 5, 2015, 1:51 PM > > To us EP6T was European QSO Party. > > GL and 73 Lou KE1F > > On 2/5/2015 1:51 AM, Jan Erik Holm wrote: > > Sorry if I´m a PITA right now but why even bother to > > have this debate about K1N on 160, it´s not even DX > > to NA, like a local station almost. > > > > Jeez how difficult can it be from the US, anybody > with > > 100W and a wet noodle for an antenna can work it. On > > 80 I´m sure at least from the east coast they can be > > worked all day long. > > > > I don´t know about 160 since so far they haven´t > been > > stronger then S2 due to geo mag storm and poor > propagation > > 66 degs north where I´m at but so far I´m very > disappointed > > in their 80m operation, they never listen for EU or > any > other > > area, they work 99,5% NA, it is the USA/Canadian QSO > party. > > I would have expected a totally different action by > that > > bunch of operators, I´m very very sad and sorry to > see > > where it all has went to. > > > > Now this might not be the case on 160, if I´m lucky > propagation > > might get better and I might get a shot at it. > > > > 73 Jim SM2EKM > > > > On 2015-02-04 01:15, Hardy Landskov wrote: > >> I got up last night for my nightly bathroom > ritual > and just for grins > >> listened to 160. They were calling CQ and I > worked > them on 2 calls. Not > >> many trying to get them. This was 1035Z. > >> N7RT > >> > >> - Original Message - From: "Richard > (Rick) > Karlquist" > >> > >> To: ; > > >> Sent: Tuesday, February 03, 2015 4:51 PM > >> Subject: Re: Topband: Out-of-Turn Callers > >> > >> > >>> Why not call around 0700Z after the > >>> band closes to EU and before it opens > >>> to JA? A bunch of us in CA got them > >>> in the log last night fairly easily. > >>> > >>> Rick N6RK > >>> _ > > > > _ > > 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: Feedpoint of short RX vertical
Ok, tnx for information, as always very helpfull . No braid breaker gives me 25 dB F/B at 500 m (1500 ft) RX site . I use my minivna generator to have a TX signal on my 2 el endfire array . Next question is were to put the null on the back so I can determine the lenght of the delayline 73 Luc ON4IA On Sunday, June 8, 2014 1:53 PM, Tom W8JI wrote: I think that idea of transformer balun or transformer unun isolation is generally a bad idea in a phased system, and not necessary in almost any system except very special cases. I would generally just forget that system for a number of reasons. Attenuation of common mode, and everyone forgets this, is attenuation is a function of shunt impedances (or common mode impedances) to the added series impedance. It is like the system forms an attenuator pad. If you cannot accomplish adequate isolation with a simple choke of reasonable impedance, it is best to look at the system and correct it. With a very short cable and reasonable "grounds" on each end, just a few dozen ohms of choke impedance makes a large change in attenuation. With very poor grounds, or the wrong cable lengths, almost no impedance will be adequate. People pick poor solutions because they fail to logically look at the system. Because they do not consider the system, the invent magic things to create unnecessary ridiculous impedances. I would use a shield breaker for feeding an electrically very short dipole, because common mode impedance is always extremely high. It has no ground at all. I would never use it on any type of Marconi (even with a poor a small element ground). I might use it on a video system or a 60Hz - 20kHz system where a reasonable choke is difficult. Not on 2 MHz except very special cases. It is generally a misguided idea for most things at HF and higher. << I made a braid breaker by using a binocular core 73-202 with 2 turns primairy and 2 turns on secondary . The term braid breaker comes from John s latest edition of low band DX ing I found that it is difficult to get signal levels identical on both elements when using it, so maybe better to use a good common mode choke at the feedpoint .>> _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Feedpoint of short RX vertical
Jim, I made a braid breaker by using a binocular core 73-202 with 2 turns primairy and 2 turns on secondary . The term braid breaker comes from John s latest edition of low band DX ing I found that it is difficult to get signal levels identical on both elements when using it, so maybe better to use a good common mode choke at the feedpoint . Luc ON4IA On Sunday, June 8, 2014 5:24 AM, Jim Brown wrote: On 6/7/2014 12:13 PM, luc kerkhofs via Topband wrote: > does it make sense to decouple the feedline > at the feedpoint with a braid breaker ? It DOES make sense to decouple the feedline. I've never heard of a "braid breaker." Under NO conditions should you open the shield == that prevents the shield from being a shield. The good ways to decouple the feedline are 1) a good transformer, a good common mode choke, and radials. See Chapter 8 of http://k9yc.com/RFI-Ham.pdf for winding guidelines for the choke. 73, Jim K9YC _ Topband Reflector Archives - http://www.contesting.com/_topband _ Topband Reflector Archives - http://www.contesting.com/_topband
Re: Topband: Feedpoint of short RX vertical
Tom, one of 2 elements is very close to the house ( 20 ft ) and coax is lying ON the ground, so I guess it is best to use a braid breaker ? In fact it is a test setup . I also have a receiver 500 meters inline with the antenna direction so I can check the F/B of my test setup Luc On , luc kerkhofs wrote: Hello Frank, no it is 11 m high vertical without toploading feedpoint is matched with resistor and coil Luc On Saturday, June 7, 2014 10:09 PM, "donov...@starpower.net" wrote: Hi Frank, My 8-circle array uses low impedance verticals, not high impedance verticals like the Hi-Z. My verticals use an inductor and resistor at the base of each vertical. In a Hi-Z array each vertical connects directly to the input of a high input impedance amplifier. The purpose of the radials in an array of short low impedance verticals is to provide a reasonably stable feed point impedance. Eight 23 meter radials provide adequately stable feed point impedance at my QTH. Radials are not needed at all in a Hi-Z array. 73 Frank W3LPL - Original Message - From: "dl8yhrfrank--- via Topband" To: topband@contesting.com Sent: Saturday, June 7, 2014 8:23:12 PM Subject: Re: Topband: Feedpoint of short RX vertical hi luc so you use a hi z rx arrya and you have matched the 7m long radials with a coil in resonaze? VY 73 frank -Ursprüngliche Mitteilung- Von: luc kerkhofs via Topband <topband@contesting.com> An: topband <topband@contesting.com> Verschickt: Sa, 7 Jun 2014 9:13 pm Betreff: Topband: Feedpoint of short RX vertical Hello, trying to improve my RX setup, I have a question . When feeding short RX verticals with a coil and resistor in series, does it make sense to decouple the feedline at the feedpoint with a braid breaker ? 73 Luc ON4IA _ 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: Feedpoint of short RX vertical
Hello, trying to improve my RX setup, I have a question . When feeding short RX verticals with a coil and resistor in series, does it make sense to decouple the feedline at the feedpoint with a braid breaker ? 73 Luc ON4IA _ Topband Reflector Archives - http://www.contesting.com/_topband