Re: [Elecraft] KAT 500 and open wire

Guys - we've long since passed he max posting limit for the list on a single topic. Let's wind this one down at this time. 73, Eric /Moderator (hopefully not for life!..)/ /elecraft.com/ On 1/7/2019 7:45 AM, Wes Stewart wrote: Then there must be less signal too:-) Wes  N7WS On 1/7/2019 6:48

Re: [Elecraft] New tuning knob for the KX2

If **only** we could get the candid and informed evaluation of someone who was *really* familiar with the KX2!! :-) Mike / KK5F K1 #175 (11/2000) KX2 #2211 (11/2017) -Original Message- >From: Wayne Burdick >Sent: Jan 7, 2019 7:48 PM >To: Mike Morrow >Cc: Elecraft >Subject: Re:

Re: [Elecraft] New tuning knob for the KX2

Nonetheless: to each his own :) Wayne N6KR elecraft.com > On Jan 7, 2019, at 2:32 PM, Mike Morrow wrote: > > Joe wrote: > >> I love my KX2 but the main tuning knob has always been a problem for me. >> >> It’s just a tad too small and not easy to spin rapidly. >> >> I found a very nice

Re: [Elecraft] KAT 500 and open wire

I use the "window line" for 3 of my antennas. We have less than 125 days/ yr with precipitation of all types. The "loss wet" is a non issue in my thinking as I'm sure would be about the same for most folks. Still with extreme loss, under most conditions, coax will have greater loss. Bob,

Re: [Elecraft] New tuning knob for the KX2

Joe wrote: >I love my KX2 but the main tuning knob has always been a problem for me. > >It’s just a tad too small and not easy to spin rapidly. > >I found a very nice aluminum knob for the KX2 being sold on eBay by a >gentleman in Winterport,ME. > >The tracking item nr. is: 264113321673. > >The

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More stuff from the storage room: I have a fresh in-the-box KBT1 unbuilt Internal Battery Option for the K1 Transceiver.  $50 Shipped 1st Class CONUS Please reply off-list Doug -- KJ0F __ Elecraft mailing list Home:

[Elecraft] New tuning knob for the KX2

Howdy Gang. I love my KX2 but the main tuning knob has always been a problem for me. It’s just a tad too small and not easy to spin rapidly. I found a very nice aluminum knob for the KX2 being sold on eBay by a gentleman in Winterport,ME. The tracking item nr. is: 264113321673. The knob

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Re: [Elecraft] KAT 500 and open wire

A pre-publication copy of the N7WS QST article from 1999. http://k6mhe.com/n7ws/Ladder_Line.pdf Independent verification of the N7WS experiments, with some nice graphs showing loss when dry, with rainwater, and with frost. The results are fairly similar. http://www.karinya.net/g3txq/wet_ll/

Re: [Elecraft] KAT 500 and open wire

On 1/7/2019 8:39 AM, Don Wilhelm wrote: Even low loss ladder line can have significant loss, especially when wet. N7WS is the guy who did that research and published it several decades ago. It's in one of those excellent ARRL Antenna Compendiums. 73, Jim K9YC

Re: [Elecraft] Annoying WSJT-X Message

Get the wsjt-x sources. Modify them to remove the message. (Probably the easiest way is to comment out the line that causes it to be displayed.) Build wsjt-x and enjoy. 73 Bill AE6JV On 1/7/19 at 10:11 AM, k...@arcomcontrollers.com (Ken Arck) wrote: Already discussed - you need to wait for

Re: [Elecraft] KAT 500 and open wire

Re:  "...what is the old dual air coil Heathkit B-1balun, a current or voltage type?  If I remember correctly, they are 4:1 ratio." From the Heathkit manual:  "The Heathkit Balun Coil Set, Model B-1 is a convenient transmitter accessory which has the capability of matching unbalanced coax

Re: [Elecraft] Annoying WSJT-X Message

  I understand it will be removed in the next update. 73 de Tom - KB2SMS On 1/7/19 12:43 PM, Richard wrote: Has anyone figured out how to stop that "2.0 only" message from popping up every time you launch WSJT-X 2.0? Richard - W4KBX

Re: [Elecraft] Annoying WSJT-X Message

Already discussed - you need to wait for the next release Ken At 09:43 AM 1/7/2019, Richard wrote: Has anyone figured out how to stop that "2.0 only" message from popping up every time you launch WSJT-X 2.0? Richard - W4KBX __

Re: [Elecraft] {K3} Loss of audio while changing digital modes

Squelch? Wazzat? No, I would never knowingly turn that on. But next time the muting happens, I will try to remember to look at the CONFIG:SQL MAIN and SQL SUB settings to see if they have been changed somehow. That leaves an open question: Why would tapping SUB twice, or turning the K3's power

[Elecraft] Annoying WSJT-X Message

Has anyone figured out how to stop that "2.0 only" message from popping up every time you launch WSJT-X 2.0? Richard - W4KBX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] KAT 500 and open wire

I think “window line” is less ambiguous for the stuff separated by plastic with squares cut out. I see “ladder line” being used to mean either window line or open wire line. DX Engineering uses ladder line to mean the plastic dielectric line:

Re: [Elecraft] KAT 500 and open wire

On 1/7/2019 10:39, Don Wilhelm wrote: Radiator lengths greater than 1/2 wavelength can be efficient, but shorter than 1/2 wavelength will be less efficient because the balanced currents on the feedline cancel each other out.  That is just plain physics. Actually, a short antenna CAN be very

Re: [Elecraft] KAT 500 and open wire

There are limits, of course, as your example shows. A center fed quarter wave is a very low impedance. I'd expect the feedline loss for that G5RV system would be less than a couple dB on 80 through 10 meters, generally acceptable. 73, Scott K9MA On 1/7/2019 09:49, Wes Stewart wrote: With

Re: [Elecraft] {K3} Loss of audio while changing digital modes

Rich, That sounds like you have squelch turned on. 73, Don W3FPR On 1/7/2019 12:54 AM, Richard Ferch wrote: I have seen something that might (or might not) be related. Occasionally (not every time), at the end of an operating session using WSJT-X, when I shut down WSJT-X the audio from my K3

Re: [Elecraft] KAT 500 and open wire

There is a BIG difference between ladder line and open wire transmission line. Even low loss ladder line can have significant loss, especially when wet. Open wire feeders can truly be low loss even when operated at high SWR. So how do you construct proper open wire line? It is most easily

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[Elecraft] Elecraft KRC2 build snaps and short narrative

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Re: [Elecraft] KAT 500 and open wire

With all due respect, you don't say what acceptable loss is.  Of course, you can match whatever the impedance is, most tuners will match an open circuit because their internal losses allow it.  But it can be a fallacy that, "The line loss is so low it doesn't matter."  Absent voltage

Re: [Elecraft] KAT 500 and open wire

Then there must be less signal too:-) Wes  N7WS On 1/7/2019 6:48 AM, Bob McGraw K4TAX wrote: ... less noise on receive... 73 Bob, K4TAX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] KAT 500 and open wire

They are a voltage type, 4:1 designed to feed a folded dipole. There are actually 4 windings, 2 on each coil. If you want to see the best in balun usage and efficiency, a folded dipole typically has some 200 to 300 ohms impedance when constructed from open wire line or like materials.    Thus

Re: [Elecraft] KAT 500 and open wire

Don: 1) made a distinction between feedpoint and load impedance, which led me to believe the load was the antenna, and the feedpoint the transmitter end; 2) said that the feedpoint impedance depended on the length of the line and the frequency, which further supported that interpretation.