Re: [Elecraft] ANTENNA QUESTION

As Wayne N6KR mentioned yesterday, "I’ll be speaking at Pacificon's antenna symposium tomorrow (Friday, Oct. 20th). My presentation, from 3:30 to 4:30 PM, is on antennas for ultra-portable HF operation. This talk was a late addition, a previous speaker having dropped out. If you’re interested in

[Elecraft] ANTENNA QUESTION

WHAT IS THE AX1 THAT I HAVE READ COMMENTS ABOUT. ARE THERE FURTHER DESCRIPTIONS OR PHOTO'S RE THIS ANTENNA?GERRY MILLER, aa...@juno.com 1 Simple Trick Removes Eye Bags & Lip Lines In Seconds Fit Mom Daily

Re: [Elecraft] Antenna Question

t;; elecraft <elecraft@mailman.qth.net> Subject: RE: [Elecraft] Antenna Question Hi David. Thanks for the information. I ordered some compression PL259s and SO239s yesterday direct from Barenco, and they arrived this morning, at a fraction of the cost I last paid from a retail Ham supplier. They

Re: [Elecraft] Antenna Question

from a cheap manufacturer. I can at last get rid of the SO239 barrels that have given me intermittent problems on my long co-ax cables. Regards, Danny, G3XVR From: CUTTER DAVID Sent: 12 October 2016 09:17 To: Dave G3WGN M6O; elecraft Subject: Re: [Elecraft] Antenna Question I bought a batch

Re: [Elecraft] Antenna Question

(I am trying to get caught up on my email. Forgive me if this has been closed.) This caught my eye, and I agree. I have found when buying PL-259's that are made in a 'metric' country, there can be slight problems converting to the dimensions used in North America. I have chased SWR troubles

Re: [Elecraft] Antenna Question

I bought a batch of Barenco 259s amongst others and I am mightily impressed, very chunky, very smooth and not expensive. David, G3UNA > > On 11 October 2016 at 22:50 Dave G3WGN M6O wrote: > > > Not oddball in EU, nor expensive. Good quality ones are available from

Re: [Elecraft] Antenna Question

Not oddball in EU, nor expensive. Good quality ones are available from Kabel-Kusch in Germany and Barenco in UK: http://www.barenco.co.uk/uhf-line-socket-so239-jacks-rg213-clamp-top-hat-compression-body-solder-pin-165425. China RF do some good ones via Fleabay too. We use these extensively in

Re: [Elecraft] Antenna Question

Here's what I use for the run up the mast to my HexBeam. The center conductor is stranded copper, and the jacket is thermoplastic elastomer. MUCH more flexible than standard LMR-400...thus, the name LMR-400 UltraFlex: https://www.dxengineering.com/parts/tmv-lmr-400ultra I have a run going up the

Re: [Elecraft] Antenna Question

Cable mount female UHF is an oddball and expensive. To avoid barrels, I use type N female cable mount which are common. 73, Josh W6XU On 10/11/2016 3:52 AM, Nr4c wrote: Why use barrels? Doesn't Amphenol or Pastornack make a female UHF connector to put on cable end. For this specific use, a

Re: [Elecraft] Antenna Question

On Tue,10/11/2016 6:29 AM, Charlie T, K3ICH wrote: I'm curious as to exactly why a "junk" connector supposedly has so much more loss than a "good" connector? Junk connectors have several issues. One of the issues is control of dimensions -- the diameter of the tip must be "right" to make a

Re: [Elecraft] Antenna Question

a much better good connector that prople think Bob K3DJC On Tue, 11 Oct 2016 09:29:19 -0400 "Charlie T, K3ICH" writes: > I'm curious as to exactly why a "junk" connector supposedly has so > much more > loss than a "good" connector? >

Re: [Elecraft] Antenna Question

I'm curious as to exactly why a "junk" connector supposedly has so much more loss than a "good" connector? They're probably both (nickel, silver ???) plated brass with a dielectric insulator usually Teflon, phenolic or ?? Is it the plating, the insulator, the fit of the threads, the

Re: [Elecraft] Antenna Question

SOME 'junk' PL259s are fine. If there are problems with the threads you will know right away. I have had some that are plated with something that won't take solder, or which have plastic insulation that melts when you solder the center pin. But again, you will know this right away. SO239s and

Re: [Elecraft] Antenna Question

Why use barrels? Doesn't Amphenol or Pastornack make a female UHF connector to put on cable end. For this specific use, a custom built cable seems appropriate. Sent from my iPhone ...nr4c. bill > On Oct 11, 2016, at 4:38 AM, Jim Brown wrote: > >> On

Re: [Elecraft] Antenna Question

On Mon,10/10/2016 4:49 PM, Josh Fiden wrote: If you're concerned about the additional loss of a barrel connector at 50MHz, you should be using feedline with lower loss than LMR400 up the tower. The loss in GOOD quality UHF connectors and barrels at 50 MHz is negligible. There are urban

Re: [Elecraft] Antenna Question

One way to do it with a single piece of stiff coax is to place a standoff about a foot long above and below the rotor. Then form the coax into a spiral of several turns between the standoffs. Rotation will just tighten or loosen the spiral and not stress the coax at all. The standoffs also take

Re: [Elecraft] Antenna Question

I do the same as Josh: http://www.kl7uw.com/6m_Dec-2013_1.jpg Multiple turns of LMR-400. That connects to 7/8-Heliax coming up the tower leg. 73, Ed - KL7UW From: Josh Fiden <j...@voodoolab.com> To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna Question Message-ID: <b9aa

Re: [Elecraft] Antenna Question

: Tuesday, October 11, 2016 1:38 AM To: hsherr...@reagan.com; Elecraft Reflector <elecraft@mailman.qth.net> Subject: Re: [Elecraft] Antenna Question There is a stranded center conductor version of the LM400, do not remember what the designation is. I plan to use some for the same reason,

Re: [Elecraft] Antenna Question

On 10/10/2016 8:37 PM, Josh Fiden wrote: > On 10/10/2016 5:39 PM, Clay Autery wrote: >> All things being equal... IF you are using LMR-400 as the main feedline, >> there is NO REASON to use a different diameter at the rotator... > The point was using a lower loss cable for the long run up the

Re: [Elecraft] Antenna Question

OOPS... Original left here in HTML not plain text. Don't know why. Elecraft in address book is listed as plain text only Sorry, Bob K2TK Forwarded Message Subject:Re: [Elecraft] Antenna Question Date: Mon, 10 Oct 2016 21:21:14 -0400 From: Bob <k...@ptd.

Re: [Elecraft] Antenna Question

Completely agree. If access isn't a problem and the additional loss of more flexible cable is tolerable, that's a great solution. I haven't used Davis Bury-FLEX but heard very positive reports about it. 73, Josh W6XU On 10/10/2016 6:21 PM, Bob wrote: For sure a consideration.There never

Re: [Elecraft] Antenna Question

On 10/10/2016 5:39 PM, Clay Autery wrote: All things being equal... IF you are using LMR-400 as the main feedline, there is NO REASON to use a different diameter at the rotator... The point was using a lower loss cable for the long run up the tower, such as hardline, then flexible cable for the

Re: [Elecraft] Antenna Question

There is a stranded center conductor version of the LM400, do not remember what the designation is. I plan to use some for the same reason, going around a rotor to a HexBeam. 73, John WB4UHCK3 #2165 On Monday, October 10, 2016 6:16 PM, "hsherr...@reagan.com" wrote:

Re: [Elecraft] Antenna Question

__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list:

Re: [Elecraft] Antenna Question

All things being equal... IF you are using LMR-400 as the main feedline, there is NO REASON to use a different diameter at the rotator... I was simply responding to what the OP said were the conditions... NOT the "ideal"... Bottom line... IF you engineer and install things properly, the fewer

Re: [Elecraft] Antenna Question

As is military practice as well. If you really want to get picky, the 400 should come up to the connector [sealed of course] and supported on the tower, and then the jumper forms the drip loop to prevent water running down the coax from running over ... and eventually into ... the connector.

Re: [Elecraft] Antenna Question

With an unbroken feedline, a failure or antenna swap can require soldering connectors up the tower. Not fun. If you're concerned about the additional loss of a barrel connector at 50MHz, you should be using feedline with lower loss than LMR400 up the tower. Wrap the barrel connection with good

Re: [Elecraft] Antenna Question

On 10/10/2016 3:14 PM, hsherr...@reagan.com wrote: > Would you connect the LMR to the antenna and allow it to move with the > rotation, or run a short length of something much more flexible between the > antenna and LMR? Commercial practice is to use a flexible jumper and "drip loop" between

Re: [Elecraft] Antenna Question

You'll get lots of suggestions, but I believe the use of a single unbroken feedline from the antenna to the shack (when possible) trumps the inconvenience of properly engineering an install that does NOT put unnecessary repetitive bending moments on the line. Do the research There's all

Re: [Elecraft] Antenna Question

LMR400 is really stiff. When I used it as a rotor loop, I made a couple of hoops around rather than directly flexing the cable around the tower. Not sure if that makes sense. In any case, doing it again I would definitely use a more flexible jumper for the rotor loop running to the antenna. In

Re: [Elecraft] Antenna Question

an.com Cc: Elecraft Reflector <elecraft@mailman.qth.net> Sent: Monday, October 10, 2016 3:17 PM Subject: Re: [Elecraft] Antenna Question I run LMR400 to my 6 & 2 meter antennas with no problems.  Just leave enough slack around the rotor and you’ll be fine. John WA1EAZ > On Oct 1

Re: [Elecraft] Antenna Question

I run LMR400 to my 6 & 2 meter antennas with no problems. Just leave enough slack around the rotor and you’ll be fine. John WA1EAZ > On Oct 10, 2016, at 6:14 PM, hsherr...@reagan.com wrote: > > OK all. I'm installing a 6m rotating beam and feeding it with LMR400. Would > you connect the LMR

[Elecraft] Antenna Question

OK all. I'm installing a 6m rotating beam and feeding it with LMR400. Would you connect the LMR to the antenna and allow it to move with the rotation, or run a short length of something much more flexible between the antenna and LMR? I have my concerns that the solid heavy inner conductor of

[Elecraft] Antenna question

Just moved and my K3 needs a new antenna. My only option is to run a wire antenna over my roof--I have about 110-120 feet to play with and I can get one end up off the ground 25 feet and the center and other end about 35 feet. Any ideas? Or references to an antenna group that can help? Thanks

Re: [Elecraft] Antenna question

A doublet. Center fed with either 600 ohm or 450 ohm ladder line, a 4:1 balun close to your shack and as short a length of coax from the balun to your K3 as possible. Using a tuner (either the K3 internal or an external), you will be able to work 80 through 10 meters, and possibly six meters.

Re: [Elecraft] Antenna question

Alpha Delta LB-PLUS. they are tough and work great George, W6GF On Friday, October 17, 2014 1:45 PM, david beckwith david.beckw...@att.net wrote: Just moved and my K3 needs a new antenna. My only option is to run a wire antenna over my roof--I have about 110-120 feet to play with and

Re: [Elecraft] Antenna question

Dave, I have a K3 (#7360) with ATU and 347 ft. long wire 30 ft height. It tunes up ok but performance is questionable. This same antenna performs better with my external MFJ tuner. Larry W7IN On 10/17/2014 20:45, david beckwith wrote: Just moved and my K3 needs a new antenna. My only option

Re: [Elecraft] Antenna question

Dave, Make it a balanced dipole antenna (equal lengths on either side of the feedpoint) for best efforts in keeping RF off the feedline. The actual length does not matter a lot, but it should be greater than 80% of the half wavelength for the lowest band of interest. Use open wire line or

Re: [Elecraft] Antenna question

Don pretty much described my low band antenna. Full Disclosure: I live on 5 acres and have a 70' tower. That said, it is a Sloping V [I'd call it an inverted V except is isn't resonant on any band], about 210' on a side from the top of the tower. 450 ohm window line to the bottom of the

Re: [Elecraft] Antenna question

Fred is right about the 450-ohm stuff getting funky in wet weather. Cause my tuners to do the clicky-click dance whenever it rains here, although we've been pretty dry the past few years. Because of this, I plan on replacing my 450-ohm line with 600-ohm ladder line in a couple weeks. I had the

Re: [Elecraft] Antenna question

In a dry climate, ladder line is fine, but good coax has low losses, too, and is less fussy about being run next to the gutters. It is rare for a dipole to be perfectly balanced (thanks to near field objects like houses), so a high-quality current balun at the antenna can really help reject

Re: [Elecraft] Antenna question

Quoting myself: Besides, I think that low angle is often overrated. Here's some supporting evidence: (for ARRL members) http://www.nxtbook.com/nxtbooks/arrl/qst_201203/index.php#/42 Wes N7WS __ Elecraft mailing list Home:

Re: [Elecraft] Antenna question

part of ham radio.    Willis 'Cookie' Cooke, TDXS DX Chairman K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart From: Rich reh...@ix.netcom.com To: elecraft@mailman.qth.net Sent: Thursday, February 13, 2014 9:07 AM Subject: Re: [Elecraft] Antenna question Does

Re: [Elecraft] Antenna question

Rodenkirch K9JWV Date: Tue, 11 Feb 2014 23:09:23 -0800 From: j...@audiosystemsgroup.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question On 2/11/2014 3:36 PM, George Thornton wrote: I have a small lot. I currently am using a 3 element Yagi that barely fits

Re: [Elecraft] Antenna question

signal arrival angles start changing dramatically and rapidly. (smiley face annotation re-inserted) 72/u3, Jim Rodenkirch K9JWV Date: Tue, 11 Feb 2014 23:09:23 -0800 From: j...@audiosystemsgroup.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question On 2/11/2014 3:36 PM, George

Re: [Elecraft] Antenna question

Well, I was speaking of my situation. I'm in the Sonoran Desert of southern AZ with ground that varies from granite to sand to caliche within a few feet distance. Although many (most?) hams consider vertical antennas to be low-angle radiators, they often fail to consider the efficiency of

Re: [Elecraft] Antenna question

On 2/13/2014 1:04 PM, Wes (N7WS) wrote: Well, I was speaking of my situation. I'm in the Sonoran Desert of southern AZ with ground that varies from granite to sand to caliche within a few feet distance. My modeling studies, as well as my results with soil that's nearly as bad, are in

Re: [Elecraft] Antenna question

Wes and all, From my practical experience, your modeling analysis is correct. I have a vertical for 80 and 40 with elevated radials (full size except for the loading of the 40 meter trap) - in A/B tests compared with my 80 and 40 meter dipoles with the center at 45 feet and ends at 20 feet or

Re: [Elecraft] Antenna question

My modeling experience pretty much says the same... for higher angle arrivals... the dipoles under 1/2 or more, will be better... especially when placed within one hop of the ocean. (East or West.).. HOWEVER... taking one hop off... (that's the same almost) as gaining 2 - 3 S unites... is

Re: [Elecraft] Antenna question

I'm not by any means an antenna expert. All I can say is with ft5zm, they were much stronger on the vertical than my dipole on 20 meters. Some how some way, I was able to work them on 40 cw with the hustler vertical. The conclusion I've come to is there's times where my dipole works better for DX

Re: [Elecraft] Antenna question

@mailman.qth.net Subject: Re: [Elecraft] Antenna question Message-ID: 040f2ec01a53458babf11914164d5...@server.thorntonmostullaw.com Content-Type: text/plain; charset=us-ascii This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely

Re: [Elecraft] Antenna question

: George Thornton gthorn...@thorntonmostullaw.com To: 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Message-ID: 040f2ec01a53458babf11914164d5...@server.thorntonmostullaw.com Content-Type: text/plain; charset=us-ascii This might

Re: [Elecraft] Antenna question

...@yahoo.com Sent: Tuesday, February 11, 2014 10:21 PM To: George Thornton gthorn...@thorntonmostullaw.com; 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Since the K3 will do the QRP thing down to 100 mw, think about installing the vertical

Re: [Elecraft] Antenna question

...@yahoo.com Sent: Tuesday, February 11, 2014 10:21 PM To: George Thornton gthorn...@thorntonmostullaw.com; 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Since the K3 will do the QRP thing down to 100 mw, think about installing the vertical

Re: [Elecraft] Antenna question

Also known as, The worst horizontal antenna is better than the best vertical antenna theory. It's always worked out for me. Now if I lived on the beach. Wes N7WS On 2/12/2014 12:09 AM, Jim Brown wrote: [snip] I'm still working on the comparison of verticals to horizontal antennas --

Re: [Elecraft] Antenna question

Hi Ed, Actually, my S9+67 dB for 0dBm turned out to be wrong - I lost one 6 dB in my book keeping, so 0dBm is S9+73 dB - or S9 equals -73 dBm (which is the number I had in mind). No doubt about the space loss formula and the far field - free space loss is no dissipative loss like for example

Re: [Elecraft] Antenna question

I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too many variables in a particular situation to risk depending on calculations when expensive equipment is

Re: [Elecraft] Antenna question

: [Elecraft] Antenna question I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too many variables in a particular situation to risk depending on calculations when expensive

Re: [Elecraft] Antenna question

On 2/12/2014 7:29 AM, Wes (N7WS) wrote: Also known as, The worst horizontal antenna is better than the best vertical antenna theory. It's always worked out for me. Now if I lived on the beach... Hi Wes, Based on my model studies, I wouldn't go that far -- it depends on how high either of

Re: [Elecraft] Antenna question

When we had our place in Silver Springs, NV, our 40-meter 4-square, with an excellent radial system, was killer. I cannot imagine anything short of a full-size 2, possibly 3, element yagi up at least 70 feet even coming close. I would think it would take the 3-element yagi to even approach the

Re: [Elecraft] Antenna question

Bill, You don't trust the traditional Smoke Test? :-) 73, Phil w7ox On 2/12/14, 2:45 PM, Bill Turner wrote: I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too

Re: [Elecraft] Antenna question

I love my 40 mtr 4 SQ it's in the woods of FAR NW WI. Poor soil, good ground system (36 each vertical) and very exact construction. Antennas are surrounded by much taller aspen. I moved from a location where I had a big 2 element at 125'. It feels very similar and at 72, I'm done climbing big

Re: [Elecraft] Antenna question

Surprised me too. It ALWAYS produces results. Eric KE6US On 2/12/2014 3:46 PM, Phil Wheeler wrote: Bill, You don't trust the traditional Smoke Test? :-) 73, Phil w7ox On 2/12/14, 2:45 PM, Bill Turner wrote: I see a number of people are trying to calculate whether any damage would be done

Re: [Elecraft] Antenna question

ORIGINAL MESSAGE: (may be snipped) On 2/12/2014 3:46 PM, Phil Wheeler wrote: Bill, You don't trust the traditional Smoke Test? :-) 73, Phil w7ox REPLY: Of course I trust it. I use it whenever I need smoke. :-) 73, Bill W6WRT

Re: [Elecraft] Antenna question

This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I put it up it is going to have to be pretty close to the Yagi. I have a dual

Re: [Elecraft] Antenna question

George, That is a very good question. However, it is hard to quess. But, one thing going in your favor is that one antenna is horizontal and the other is vertical. This will minimize the amount of coupling between the two. If you can get some horizontal separation between the two, it just

Re: [Elecraft] Antenna question

I have a Pennant receiving antenna about 100' from my 160 Meter Antenna. I put a scope on the Pennant coax and keyed the rig. At about 1 KW out, I saw about 6 volts pk-pk. I bought a Receiver protection device. 73, Dick, W1KSZ On 2/11/2014 4:36 PM, George Thornton wrote: This might be a

Re: [Elecraft] Antenna question

ORIGINAL MESSAGE: (may be snipped) On 2/11/2014 3:36 PM, George Thornton wrote: I have a dual receive K3. If I have both receivers going, one on each channel, and I broadcast on one of these antennas, am I in any danger of overloading and frying the other receiver? REPLY: The

Re: [Elecraft] Antenna question

I would do it at all! Especially at power Sent from my iPhone On Feb 11, 2014, at 7:16 PM, Bill Turner dezrat1...@wildblue.net wrote: ORIGINAL MESSAGE: (may be snipped) On 2/11/2014 3:36 PM, George Thornton wrote: I have a dual receive K3. If I have both receivers going, one on

Re: [Elecraft] Antenna question

Check out the front-end protector in the “Articles” section of my website at www.ad5x.com. Phil – AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Antenna question

On 2/11/2014 3:36 PM, George Thornton wrote: This might be a stupid question, but here goes. Only unasked questions are stupid. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I

Re: [Elecraft] Antenna question

NOT Sent from my iPhone On Feb 11, 2014, at 7:20 PM, Monovasia pontia...@monovasia.com wrote: I would do it at all! Especially at power Sent from my iPhone On Feb 11, 2014, at 7:16 PM, Bill Turner dezrat1...@wildblue.net wrote: ORIGINAL MESSAGE: (may be snipped) On

Re: [Elecraft] Antenna question

Hi George, I'm not 100% sure but I don't think your SUB RX has to be ON to be damaged. I believe that just connecting an antenna to the AUX RF input will allow RF into the SUB RX. There is an internal protective device on the input to the SUB RX called a carrier operated relay (COR). You can

Re: [Elecraft] Antenna question

, 2014 5:36 PM Subject: Re: [Elecraft] Antenna question This might be a stupid question, but here goes. I have a small lot.  I currently am using a 3 element Yagi that barely fits on the property.  I was thinking about getting a vertical as a second HF antenna.  If I put it up it is going

Re: [Elecraft] Antenna question

On 2/11/2014 3:36 PM, George Thornton wrote: I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. As it happens, over the past year or so I've been engaged in a serious modeling study

Re: [Elecraft] Antenna Question

Neil, Were you able to see if the shortened fan dipole used by the county ERC has the feeder connected to all three elements, as would be the case with a typical fan dipole? If the feeder is connected *only* to the mid-point of the longest element, and the two shorter elements are unbroken

Re: [Elecraft] Antenna Question

Neil, When you see an antenna element folded back on itself like that, think linear loading (look it up in the ARRL Handbook or similar). There is no magic, but it is one way of shortening an antenna. It is not as efficient as a full length antenna, but is more efficient than using loading

Re: [Elecraft] Antenna Question

...@embarqmail.com To: Niel Skousen nskou...@talisman-intl.com Cc: Elecraft Reflector elecraft@mailman.qth.net; qr...@mailman.qth.net Sent: Monday, June 18, 2012 6:18 AM Subject: Re: [Elecraft] Antenna Question Neil, When you see an antenna element folded back on itself like that, think linear loading (look

Re: [Elecraft] Antenna Question

...@mailman.qth.net Sent: Monday, June 18, 2012 6:18 AM Subject: Re: [Elecraft] Antenna Question Neil, When you see an antenna element folded back on itself like that, think linear loading (look it up in the ARRL Handbook or similar). There is no magic, but it is one way of shortening

Re: [Elecraft] Antenna Question

Subject: Re: [Elecraft] Antenna Question Neil, When you see an antenna element folded back on itself like that, think linear loading (look it up in the ARRL Handbook or similar). There is no magic, but it is one way of shortening an antenna. It is not as efficient as a full length

[Elecraft] Antenna Question

I'm pretty sure I've seen this antenna on the net, but don't recall the name nor have I been able to find a link to a description / design data. The county ERC has a 'shortened fan dipole' with three parallel elements, spaced about 18-24 apart on each side. the longest element folds back

Re: [Elecraft] Antenna Question

dozen to a couple hundred miles, maximum. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Niel Skousen Sent: Sunday, June 17, 2012 8:26 PM To: Elecraft Reflector; qr...@mailman.qth.net Subject: [Elecraft] Antenna

Re: [Elecraft] Antenna Question for KX1

Paul You might like to check out this antenna idea on the Adventure Radio Society web site: http://www.arsqrp.com/ars/pages/back_issues/2006_text/0506_text/N7XJa.html Looks good to me, and it's been used on 40/30/20 with a KX1. 73 Dave, G4AON ___

RE: [Elecraft] Antenna Question for KX1

Is the coax ok? Add or remove length from antenna. Guessing interaction between coax antenna. This should demonstrate that pretty quick. What is the impedance range of auto tuner? Don Wilhelm [EMAIL PROTECTED] wrote: __ Paul, A balun may or may not help. and in any case, a balun or

Re: [Elecraft] Antenna Question for KX1

In message [EMAIL PROTECTED], Paul Webb [EMAIL PROTECTED] writes Hi All I have been playing with my KX1 in the back yard the last week or so and found that about 26ft of wire in the hot side of the bnc connector and about the same to the cold side gets me a good match with the built in ATU on

Re: [Elecraft] Antenna Question for KX1

Paul The loss in poorly matched coax can be very high, you might consider using a length of 300 Ohm ribbon cable instead. You will need a balun at the KX1 end of the ribbon. With my K1 across 40/30/20/15 I find a 66 foot top (33' each side) with 32 foot of ribbon tunes with the KAT1 in my

RE: [Elecraft] Antenna Question for KX1

Paul, A balun may or may not help. and in any case, a balun or no balun is not the answer to your situation - the 20 ft of coax is acting like an impedance transformer, and without a thorough analysis of your antenna and feedline system, it is difficult to say what would help. Perhaps some

Re: [Elecraft] Antenna Question for KX1

Try taking a big fat toroid from somewhere and looping your coax through that about 15 times at the antenna end and see how that works for you. Alternately, put a bunch of clip-on beads on the coax at the antenna end and try that. Alternately, try lengthening the antenna on the 'hot' side as

[Elecraft] Antenna Question for KX1

Hi All I have been playing with my KX1 in the back yard the last week or so and found that about 26ft of wire in the hot side of the bnc connector and about the same to the cold side gets me a good match with the built in ATU on 40,30,20m Now if I use the same wires but add 20ft of coax

Re: [Elecraft] Antenna Question for KX1

Hi Paul, Without modeling your antenna, I don't know what the feedpoint impedances are, but it's a good thing that you can match them with the KX-1. The 20 foot length of coax is transforming the impedance to something outside the range of your KX-1, and a balun wouldn't help unless (perhaps)

Re: [Elecraft] Antenna question

Tom, While you can run the ladder line right to the shack and connect directly to the K2, a balun mounted outside and a coax run to the rig works well and you avoid having to run the ladder line inside which sometimes can be problematic. There are several low cost 4:1 baluns on the market

[Elecraft] Antenna Question

Tom - You should use a 1:1 balun to feed the balanced line with the K2 tuner. You can easily make one by wrapping a dozen or so turns of RG-58 through a type 43 or 61 core FT140 or larger. Diz, at http://partsandkits.com/index.asp is a good source of these toroids. Alternately, you can slip a

RE: [Elecraft] Antenna question - Balun

On 21 Aug 2005 at 8:40, Robert Tellefsen wrote: Two things will make matching easier. Get two baluns, 1:1 and 4:1. Put them on the two antenna ports of the ATU Looking at the two versions of the BL1 for 1:1 and 4:1 Can you not use a 2pco ( dpdt ) switch or relay to change between the two

RE: [Elecraft] Antenna question - Balun

and 73 Bob N6WG The Little Station with Attitude -Original Message- From: Mike W [mailto:[EMAIL PROTECTED] Sent: Sunday, August 21, 2005 4:03 PM To: Robert Tellefsen; elecraft@mailman.qth.net Subject: RE: [Elecraft] Antenna question - Balun On 21 Aug 2005 at 8:40, Robert Tellefsen wrote

[Elecraft] Antenna question

Hi all, I'm considering putting up a 40 meter dipole fed with a 450 ladder line. I have a K2 which I run at about 5 to watts (I do not have the 100 watt amp). The K2 also has the internal ATU. I have always used 50 ohm coax up until now. Is there anything I should know about using the K2

Re: [Elecraft] Antenna question

: [Elecraft] Antenna question Hi all, I'm considering putting up a 40 meter dipole fed with a 450 ladder line. I have a K2 which I run at about 5 to watts (I do not have the 100 watt amp). The K2 also has the internal ATU. I have always used 50 ohm coax up until now. Is there anything I