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Knots in antenna wire?
Does a knot in insulated 16g stranded wire pose a problem
for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
"Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes both the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? Walt, W2DU |
Walter Maxwell wrote:
Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes b oth the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? At one place I worked in CA, we put a knot in the AC line of our soldering irons and hung them on cup hooks on the wall when not in use. I was using one at a bench when a secretary asked me what the knot was for. I told her that's how we regulate the temperature of the iron - the tighter the knot, the fewer the electrons getting to the heating element. Physics was not her long suit. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Ken:
Hindu's go to great lengths not to even step upon a single ant, for that feel the untimely death of a single ant might well change the course of history (ask Cecil if you don't believe me--he has claimed he is a Hindu grin.) But Ken, I think that knot matters even less than the life of the poor ant in question... you are probably safe... Warmest regards, John "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
Ken Bessler wrote: Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2=A2 worth... 73's es gd dx de Ken KG=D8WX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 HI Ken, the knot would pose no problem at hf frequencies. It would pose even less a problem if you stripped the insulation off at the knot and soldered it all together. Gary N4AST |
John Smith wrote:
Hindu's go to great lengths not to even step upon a single ant, for that feel the untimely death of a single ant might well change the course of history (ask Cecil if you don't believe me--he has claimed he is a Hindu grin.) Every day I kill thousands, if not millions, of living organisms like staff bacteria and cold viruses. I am forced to consume a liter of wine just to get rid of my guilt pangs. I wonder how other Hindus handle their guilt over killing so many living creatures every day of their lives? -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
wrote in message ups.com... Ken Bessler wrote: Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 HI Ken, the knot would pose no problem at hf frequencies. It would pose even less a problem if you stripped the insulation off at the knot and soldered it all together. Gary N4AST When my son Bill, W2WM, was in high school he was a practical jokester. His science teacher wasn't too swift, and when Bill told him current wouldn't pass through a knot in a zip cord, the teacher believed him. Walt, W2DU |
Cecil Moore wrote:
Every day I kill thousands, if not millions, of living organisms like staff bacteria and cold viruses. I am forced to consume a liter of wine just to get rid of my guilt pangs. I wonder how other Hindus handle their guilt over killing so many living creatures every day of their lives? You should be doubly guilt panged, Cecil, just think of the billions of poor yeast that gave up the ghost to assuage your guilt. (He types between sips of Smithwick's Irish Ale) tom K0TAR |
"Walter Maxwell" wrote in message ... Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes both the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? Walt, W2DU I didn't pay much for it. I had the coax & connector plus the center insulator. The wire was $3.30. FYI I'll only be putting 5-15 watts SSB/CW through the antenna on FD. -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
The Knot matters not your signal will live but the receivers will need to tie a knot in their ears didididahdidah ....-.- -.. . .-- ....- .--. -- .--- "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken |
Only if it is tied really tight. The electrons can't make sharp turns at
C*VF and end up somewhere else. .. "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
Irish ale is the best
good taste, I say (He types between sips of Smithwick's Irish Ale) tom K0TAR |
"Fred W4JLE" wrote in message
... Only if it is tied really tight. The electrons can't make sharp turns at C*VF and end up somewhere else. I just had an idea - I could strip 1/2" of insulation just past the knot and solder a jumper to the feedpoint, electrically bypassing the knots while still leaving them there to be strain reliefs. Thanks for the help, guys. -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
Well, there is always Reincarnation! (My Karma ran over your Dogma)!
Jim NN7K Cecil Moore wrote: I wonder how other Hindus handle their guilt over killing so many living creatures every day of their lives? |
CECIL!!!!
ROFLOL!!! Hey, I got some change here, how much you got, wanna go halfs on a new bottle? grin Warmest regards, John "Cecil Moore" wrote in message ... John Smith wrote: Hindu's go to great lengths not to even step upon a single ant, for that feel the untimely death of a single ant might well change the course of history (ask Cecil if you don't believe me--he has claimed he is a Hindu grin.) Every day I kill thousands, if not millions, of living organisms like staff bacteria and cold viruses. I am forced to consume a liter of wine just to get rid of my guilt pangs. I wonder how other Hindus handle their guilt over killing so many living creatures every day of their lives? -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
Ken:
Some of like to joke a bit, we mean no harm, please do not take offense... I really believe the general consensus is that the knot is no problem... .... now, that said, to tell you the truth, the knot just being there would bother me--and I think it does you too--I'd probably remove the knot and go to great ends to do it--but really, the knot matter naught... Warmest regards, John "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
"Ken Bessler" wrote in message news:UV5oe.9951$Wr.2335@fed1read04... "Walter Maxwell" wrote in message ... Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes both the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? Walt, W2DU I didn't pay much for it. I had the coax & connector plus the center insulator. The wire was $3.30. FYI I'll only be putting 5-15 watts SSB/CW through the antenna on FD. Ok, Ken, just make sure you put in at least a 20-watt knot, so you'll have a little margin to spare. Walt |
On Fri, 03 Jun 2005 18:37:18 -0500, Tom Ring
wrote: Cecil Moore wrote: Every day I kill thousands, if not millions, of living organisms like staff bacteria and cold viruses. I am forced to consume a liter of wine just to get rid of my guilt pangs. I wonder how other Hindus handle their guilt over killing so many living creatures every day of their lives? You should be doubly guilt panged, Cecil, just think of the billions of poor yeast that gave up the ghost to assuage your guilt. (He types between sips of Smithwick's Irish Ale) tom K0TAR not to mention the billions of electrons that were displaced in the delivery of all these messages ;) -- 73 for now Buck N4PGW |
"Buck" wrote in message
... not to mention the billions of electrons that were displaced in the delivery of all these messages ;) -- 73 for now Buck N4PGW 1,771,561 tribbles, er, electrons. That's assuming 1 trib - electron, multiplying with an average litter of 10, producing a new generation every 12 hours for 3 days. Cudos to Cmdr's Spock & Dax - does that label me a Trekkie? LOL -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
On Fri, 3 Jun 2005 18:01:05 -0400, "Walter Maxwell"
wrote: "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes both the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? Reminds me of my youth. One of my earliest jobs was working in an automotive parts store. This was back when you actually had to know cars and how to read and look things up in paper catalogs and stuff like that. One test some of the oldtime mechanics would do on a new parts guy would be something like asking for a set of spark plugs for a Cummins diesel, a radiator cap for a Corvair or a pan gasket for a Powerglide transmission. I fess up... they got me on the last one. Ken, the only problem with the knot is that the wire will be weak at that point. |
I think John is right
Even though the antenna will work fine WITH the knots if the owner of the antenna has doubts then the knots should be removed post - haste. all you need is that element of doubt when you can't quite get thru the pileup. Was it due to those 2 knots ? Yeah - solder a jumper - or untie them for sure. "John Smith" wrote in message ... Ken: Some of like to joke a bit, we mean no harm, please do not take offense... I really believe the general consensus is that the knot is no problem... ... now, that said, to tell you the truth, the knot just being there would bother me--and I think it does you too--I'd probably remove the knot and go to great ends to do it--but really, the knot matter naught... Warmest regards, John |
A knot in an antenna wire will have absolutely no electrical effect
below about 200 MHz. But it will mechanically weaken the wire. During the next hurricane or loading with ice it will be more likely to break. ---- Reg, G4FGQ |
The question was not the soldering iron...how did you regulate the
temperature of the secretary? Jim I was using one at a bench when a secretary asked me what the knot was for. I told her that's how we regulate the temperature of the iron - the tighter the knot, the fewer the electrons getting to the heating element. Physics was not her long suit. |
No, no, no. If you put in a 20 knot watt, you can't run fast enough to
catch up to it. Jim Ok, Ken, just make sure you put in at least a 20-watt knot, so you'll have a little margin to spare. Walt |
Nope!unless it might be mega-kink per inch sq....hey; mega-kink per inch sq. that might wind up being something close to 1.5" copper pipe which would be great. Just figure up some means of support for it. This is a winner Ken. We can name it the Kenneth Kilo-Killer-Kink. Butch KF5DE Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
Bill:
I don't like to think of it that way... I think it is more like I am "pardoning them" after they have served their sentence... and once again they are free men... err, free bacteria... John "Bill Turner" wrote in message ... On Fri, 03 Jun 2005 18:37:18 -0500, Tom Ring wrote: You should be doubly guilt panged, Cecil, just think of the billions of poor yeast that gave up the ghost to assuage your guilt. __________________________________________________ ____________ Without getting overly gross, human feces are comprised of a large percentage of bacteria. Every time you do a you-know-what, you are sentencing them all to death. And this after they have helped you digest your food too! Bunch of ingrates. :-) -- Bill, W6WRT |
Bill Turner wrote:
Odd how a seemingly minor event can change one's life, isn't it? I went into electrical engineering to find out how my ham radio worked. That eventually led to my Intel stock options splitting 7 times. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
On Sat, 4 Jun 2005 15:31:19 +0000 (UTC), "Reg Edwards"
wrote: A knot in an antenna wire will have absolutely no electrical effect below about 200 MHz. But it will mechanically weaken the wire. During the next hurricane or loading with ice it will be more likely to break. ---- Reg, G4FGQ Your answer is surely correct, but not as interesting as the other threads. CUL after catching up to my secretary...... -- 73 for now Buck N4PGW |
A knot in an antenna wire will have absolutely no electrical effect below about 200 MHz. But it will mechanically weaken the wire. During the next hurricane or loading with ice it will be more likely to break. ---- Reg, G4FGQ Buck says politely - Your answer is surely correct, but not as interesting as the other threads. =============================== Buck, may I suggest replacing "interesting" with "useless". ---- Reg, G4FGQ |
On Sun, 5 Jun 2005 08:37:58 +0000 (UTC), "Reg Edwards"
wrote: A knot in an antenna wire will have absolutely no electrical effect below about 200 MHz. But it will mechanically weaken the wire. During the next hurricane or loading with ice it will be more likely to break. ---- Reg, G4FGQ Buck says politely - Your answer is surely correct, but not as interesting as the other threads. =============================== Buck, may I suggest replacing "interesting" with "useless". ---- Reg, G4FGQ That too, is true -- 73 for now Buck N4PGW |
Reg:
I think you quite correct--we should not be thinking "knotty thoughts" anyway... grin Warmest regards, John "Reg Edwards" wrote in message ... A knot in an antenna wire will have absolutely no electrical effect below about 200 MHz. But it will mechanically weaken the wire. During the next hurricane or loading with ice it will be more likely to break. ---- Reg, G4FGQ Buck says politely - Your answer is surely correct, but not as interesting as the other threads. =============================== Buck, may I suggest replacing "interesting" with "useless". ---- Reg, G4FGQ |
On Fri, 03 Jun 2005 17:48:42 -0500, Cecil Moore
wrote: Walter Maxwell wrote: Sorry, Ken, knots are a no-no. DC can travel through them, but RF? Uhn Uh. The RF gets all tied up in them and doesn't know which way to go, so the power concentrates there and pulverizes both the wire and the insulation--the knot goes pooof! And down comes the dipole. How much did you say you paid for it? At one place I worked in CA, we put a knot in the AC line of our soldering irons and hung them on cup hooks on the wall when not in use. I was using one at a bench when a secretary asked me what the knot was for. I told her that's how we regulate the temperature of the iron - the tighter the knot, the fewer the electrons getting to the heating element. Physics was not her long suit. Did she look OK in a short suit? :-) |
On Fri, 3 Jun 2005 19:55:17 -0400, "Fred W4JLE"
wrote: Only if it is tied really tight. The electrons can't make sharp turns at C*VF and end up somewhere else. They flp off the sharp curves and fall to the ground where they lay writhing until they expire. . "Ken Bessler" wrote in message news:Q64oe.9868$Wr.5569@fed1read04... Does a knot in insulated 16g stranded wire pose a problem for a dipole at HF freqs? This is a 66' FD dipole, coax fed, operating 40-10m with a KAT2 autotuner. The knots are 1/2" away from the feedpoint & lock the antenna to it's center insulator. Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 |
wrote:
Did she look OK in a short suit? :-) This was back in the 1970's free love days in Silicon Valley. She wore mini-skirts and no panties. Every day when she left work, the R&D engineers would gather round the window and pray for the wind to blow. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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