Re: [Elecraft] EFHW

On the low bands most end fed half waves are inverted L's or fairly close and for very good reason. That's due to the kind of support people commonly have for an 80 meter wire that's a total of 135 feet long. Most commonly, a pair of trees, a horizontal wire between them, and at one end of it

Re: [Elecraft] EFHW

From the WWV site: The WWV antennas are half-wave vertical antennas that radiate omnidirectional patterns. There are actually five antennas at the station site, one for each frequency. Each antenna is connected to a single transmitter using a rigid coaxial line, and the site is designed so

Re: [Elecraft] EFHW

Or. imagine using it in a 160 contest... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com email:

Re: [Elecraft] OT: be careful what you open

FWIW, I've had the 'UN-deliverable package' email, but Windows Defender warned me. I recognized it as a phony about the same time. Still, I was impressed with Defender. I've been getting several phone calls from the Ransom-ware people, and I tell them they should be ashamed of themselves.

Re: [Elecraft] EFHW

Yep, flamethrower of No. Cal. The groundwave coverage is amazing. Imagine how big that thing would be if they were on 580 instead of 1530 :^) Ken K6MR From: donov...@starpower.net Sent: Sunday, February 12, 2017 9:07 PM To:

Re: [Elecraft] EFHW

There are excellent photos and a description of the KFBK Franklin array here: https://www.fybush.com/sites/2005/site-051028.html 73 Frank W3LPL - Original Message - From: "Fred Jensen" To: elecraft@mailman.qth.net Sent: Monday, February 13, 2017 3:56:33

Re: [Elecraft] EFHW

That's correct Jim. I meant close to 90 degrees (1/4 wavelength). Some of the "big guns" do have 1/2 wave tall antennas, but most are near 1/4 wave tall. Tnx for catching that. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim

Re: [Elecraft] The market for Full Kit Radios?

Clifton Web used to make a precision IF buffer with a SMA connector Out of the back of the k2. I have one in my K2. That circuit schematic is on the web, there you Leroy AB7CE -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm Sent:

Re: [Elecraft] EFHW

KFBK in Sacramento uses [or used, my info is a few years old] a center-fed half-wave vertical ["Franklin"] antenna, said to be the only one left. It's ... interesting. [:-) KFBK is also the originator of the first out-phasing BC TX which became the RCA Ampliphase [or Amplifuzz if you ever

Re: [Elecraft] The market for Full Kit Radios?

I'm building one now sn 77xx so yes there are a lot of them out there Original message From: Brian Denley Date: 2017-02-12 10:38 PM (GMT-05:00) To: Alan Bloom Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] The market for

Re: [Elecraft] The market for Full Kit Radios?

Show me as interested. Kev Schache VK5KS K2 #7xxx On 13/02/2017 2:08 PM, Brian Denley wrote: There are a lot of K2s out there... Brian Denley KB1VBF Sent from my iPad On 02/12/2017 03:28 PM, Ray Sills wrote: Not to rain on anyone’s parade, but I’d wager you would need at least several

Re: [Elecraft] The market for Full Kit Radios?

Ray, If you provide the K2 with an IF output, the P3 will work just fine as a panadapter. You need a buffer amplifier for the IF output. LP-Pan will also work, but you need software running on the computer - NaP3 or Win4K3 should work nicely. 73, Don W3FPR On 2/12/2017 6:28 PM, Ray Sills

Re: [Elecraft] The market for Full Kit Radios?

There are a lot of K2s out there... Brian Denley KB1VBF Sent from my iPad >> On 02/12/2017 03:28 PM, Ray Sills wrote: >> Not to rain on anyone’s parade, but I’d wager you would need at least >> several hundred, maybe thousands more serious buyers, for it to be >> financially viable for Elecraft

Re: [Elecraft] Question about N1MM+ Logger

Us can only work DXSo every station you log needs to send a power On Feb 12, 2017 6:59 PM, "Dauer, Edward" wrote: > > This is arguably OT, but I have just installed the N1MM+ logger and haven't > yet had a chance to research where to access that user group.  So I've

Re: [Elecraft] The market for Full Kit Radios?

The P3 will work with the K2, although you need to modify the K2 to get an IF output signal. In the P3 menu, go to "Xcvr Sel" and select "4915 kHz" or "4915 kHz (inverted)" depending on which band you're on. The P3 display does not indicate the K2 frequency, receive bandwidth, etc. so it's

Re: [Elecraft] KAT500 Thermal Pad

I found it in the XMTR SO239 bag. > On Feb 12, 2017, at 7:56 PM, Harry Yingst wrote: > > > Have you checked in the envelope with the Serial Number? > > > > > From: Mike Crownover > To: elecraft@mailman.qth.net > Sent: Sunday, February 12, 2017 9:51 PM

Re: [Elecraft] KAT500 Thermal Pad

Have you checked in the envelope with the Serial Number? From: Mike Crownover To: elecraft@mailman.qth.net Sent: Sunday, February 12, 2017 9:51 PM Subject: [Elecraft] KAT500 Thermal Pad I am putting together the KAT500 Tuner and the Thermal Tape for R6 on the

[Elecraft] KAT500 Thermal Pad

I am putting together the KAT500 Tuner and the Thermal Tape for R6 on the bottom of the board is not in the parts bag. Is there any substitute for the thermal tape or should I wait to get it from Elecraft? Mike AD5A __ Elecraft

[Elecraft] k2 panadaptor

Clifton Web used to make a internal precision IF buffer to a SMA connector, And Tony made me a little surface mount K2 IF softrock, which HDR and all those others works great as a basic K2 pan adaptor. My K2 SN 40 (now K2-100) is all tricked out with everything that was ever available. But

Re: [Elecraft] Question about N1MM+ Logger

On Sun,2/12/2017 3:59 PM, Dauer, Edward wrote: This is arguably OT, but I have just installed the N1MM+ logger and haven't yet had a chance to research where to access that user group. Hi Ted, When I joined the current reflector several years ago, how to sign up was prominently posted on

Re: [Elecraft] EFHW

Not true, Ron. Most AM broadcast transmitting antennas are in the range of 80-90 electrical degrees (a quarter wave). Nearly all of the Class I clear channel stations use antennas that are at least 180 electrical degrees. You can see this data for any US station at

Re: [Elecraft] OT: be careful what you open

FWIW I have had about a sudden 10dB increase in spam, beginning around Friday morning. Lots of crap about Qantas flights and “Coles” gift certificates, as well as others I don’t remember after quickly deleting therm. 73 - Jim K8MR > On Feb 12, 2017, at 7:23 PM, Ron D'Eau Claire

Re: [Elecraft] EFHW

This thread is a long one and frankly I didn't follow it at first, but a little research says that the OP was interested in bringing a coax feeder directly into the radio from the end of a wire. He incorrectly called the coax a "counterpoise", instead of an extension of the wire which it

Re: [Elecraft] [OT] end-fed halfwave antennas

Wes, Thank you for the references! 73, Bill K9YEQ -Original Message- It is really unfortunate that advice like this continues to be...excuse the pun...propagated on forums such as this, when there is so much published information to the contrary freely available on the Internet

Re: [Elecraft] Question about N1MM+ Logger

Thanks, Ryan. That worked. The Manual reads : “. . . it does not believe your entered exchange is in the proper format for the contest.” I had read the word your to mean my, but in fairness to the authors that’s more my error than theirs. So to RTFM we could add RTFM-C! (carefully!)

Re: [Elecraft] OT: be careful what you open

Mr. Podesta is a good example of what I'm talking about: he was asked to update his password, he didn't look at the message carefully and ask himself if it was genuine. There is nothing magical about Trojan horses. They rely on someone trusting that the offer is genuine, and following the

Re: [Elecraft] OT: be careful what you open

Don't overlook the fact that anyone posting here has their e-mail address added to the archive available on the Elecraft web page (and probably others) where any web-bot can easily harvest it. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On

Re: [Elecraft] The market for Full Kit Radios?

I recall seeing a Panadapter someone made for a KX3 out of a Raspberry Pi, combined that with a Softrock Lite (for the I/Q), mount in a Matching K2 chassis. From: Brian Denley To: Kevin - K4VD Cc: Harry Yingst ; Elecraft

Re: [Elecraft] Question about N1MM+ Logger

>This is arguably OT, but I have just installed the N1MM+ logger and haven't >yet had a chance to research where to access that user group.  So I've come >here for help . . .  There is a Yahoo mail group for N1MM Logger+ users.  >Setting the program up for the ARRL DX Contest CW, when I try to

Re: [Elecraft] EFHW

On Sat,2/11/2017 9:19 PM, Kevin - K4VD wrote: ​So what we are saying here is that all the local and DX QSOs we make from a picnic bench with an end fed or random wire thrown up in a tree and a short or no counterpoise doesn't really happen or, at best, is a fluke. Not at all -- but the fact is

Re: [Elecraft] OT: be careful what you open

Ummm ... maybe not. The email address of everyone who has recently posted to this list resides in the trash folder on my computer where it went after I read it, and where it will stay until a few thousand accumulate and I empty the trash. This is probably also the case for most everyone else.

[Elecraft] Question about N1MM+ Logger

This is arguably OT, but I have just installed the N1MM+ logger and haven't yet had a chance to research where to access that user group. So I've come here for help . . . Setting the program up for the ARRL DX Contest CW, when I try to enter made up QSOs just to try it out I get the error

Re: [Elecraft] Full kits,

I have a K2 half built on the Bench and a mcHF on my desk that I built last summer I would love to see a multi-band BiTX (I have built a BiTX20A in the past as well). I'm let to believe that there is a market out there for full kits so maybe I'm just not looking in the right places.

[Elecraft] Full kits,

Harry, you betcha the's a market for full kits! As I write this, I have a Bitx-40 on the bench, just completed a Kn-q7a, and the rest of my gear ranges from MKARS-80 through to three MST-xx. On top of this, I've modified a Codan 7727 to vfo. Never happier than when I have a soldering iron

Re: [Elecraft] The market for Full Kit Radios?

Not to rain on anyone’s parade, but I’d wager you would need at least several hundred, maybe thousands more serious buyers, for it to be financially viable for Elecraft (or a 3rd party) to make a panadapter for the K2. BTW, is it not the case that the K2 is a traditional superhet? That means

Re: [Elecraft] EFHW

" if the radio is on the ground, or near the ground, then the antenna is a vertical." Wes N7WS Does this statement actually mean that horizontally polarized antennas do not exist for those, whose radio is not high enough above the ground. :) 73, Igor UA9CDC

Re: [Elecraft] The market for Full Kit Radios?

I second the panadaptor idea Sent from my iPhone > On Feb 12, 2017, at 4:46 PM, Brian Denley wrote: > > I'd love a matching panadaptor kit for my K2 ! > > Brian Denley > KB1VBF > Sent from my iPad > >> On Feb 12, 2017, at 3:11 PM, Kevin - K4VD wrote: >>

Re: [Elecraft] OT: be careful what you open

Kevin, you are correct. It's not the "spam" per-se, but the likelihood that people on this list are receiving trojan horses, and opening them. I know this address appears in exactly one place: here. It was harvested from this list in one way or another. It's possible someone found and

Re: [Elecraft] OT: be careful what you open

No increase in SPAM for me lately. As Kev notes, it has become more and more of a non-issue here even though my e-mail address is all over the internet. Okay, now I'll probably get a bonus rush of the stuff because I said that! 73, Ron AC7AC -Original Message- From: Elecraft

Re: [Elecraft] KX1/KX3 Accessory Cable Source (for external key)

A quick google search brought up some on Amazon you could also buy a cable and cut it in half and have two of them From: "k...@roadrunner.com" To: elecraft@mailman.qth.net Sent: Sunday, February 12, 2017 4:44 PM Subject: [Elecraft] KX1/KX3 Accessory Cable Source

Re: [Elecraft] OT: be careful what you open

Do people still have problems with SPAM? I've noticed a significant drop in the past year or so. Using Google GMail, they catch most of the spam before I ever see it. I do check my spam folder at times just in case but boy oh boy SPAM seems to have become a lot less of a problem lately. In the

Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

Hi Brian, Well it is usually about 65F(~18C) in the shack this time of year unless I turn on the space heater. Not really "cold" per se. The PX3 will misbehave on start up or after having been turned off for about 5 min. even in warmer times. I guess what I mean by cold is different from

Re: [Elecraft] KX1/KX3 Accessory Cable Source (for external key)

This might work: https://smile.amazon.com/3-5mm-Stereo-Right-Angle-Plug/dp/B004GIKSN6/ref=sr_1_1?ie=UTF8=1486936318=8-1=70-3536+%281%29 Haven't used them but happened to be on Amazon Smile when I saw the email. Kev K4VD On Sun, Feb 12, 2017 at 4:44 PM, wrote: > Who can

Re: [Elecraft] The market for Full Kit Radios?

I'd love a matching panadaptor kit for my K2 ! Brian Denley KB1VBF Sent from my iPad > On Feb 12, 2017, at 3:11 PM, Kevin - K4VD wrote: > > Hey Harry... I hope you don't mind if I toss another idea out there. It has > to do with a conversation going on in another forum I'm part

Re: [Elecraft] OT: be careful what you open

Let's not be hasty in our judgement... To be fair, it would be trivial to write a small script to harvest any string that looks like an email address that follows the form of /\w\sat\s\w\.(com|net|org|tld)/ (that's a word followed by a space followed by 'at' followed by space followed by a word

[Elecraft] KX1/KX3 Accessory Cable Source (for external key)

Who can point me to a source for a right-angle 3.5mm stereo plug to bare wire cable for the KX3? I wish to make up some cables for outboard straight keys and bugs. I would solder either a 3.5mm mono or 1/4" mono in-line jack to accommodate the external key. TNX fer any help es 72 Howard

Re: [Elecraft] EFHW

I think what this thread is about is effective, very lightweight antennas for backpacking, SOTA, bicycle touring, etc. These are antennas that, not including the support, weigh just a few ounces. Whether they could be made to work better with hundreds of long radials is completely irrelevant.

[Elecraft] OT: Recent antenna discussion(s)

It's my opinion that there has been virtually nothing "new" related to antennas since the 1930's. Only the names have been changed, as the high number of recent posters have shown. Some even have reached "cult" status. I have a small history of giving antenna seminars at hamfests, and usually

Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

> >>When the PX3 is powered on "cold", it takes about 5 minutes for the > display to light up. > Hi Jack, I recently experienced something similar to your PX3 situation. When you said "cold", I immediately perked up. During winter field day, I decided to take my PX3 with me. Our club worked

Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

If the kxpa100 power slide switch is OFF, the amp depends on periodic polls from the kx3 to keep it on. Dick, K6KR > On Feb 12, 2017, at 14:39, Don Wilhelm wrote: > > Jack, > > It would seem that you have tackled the most obvious stuff. > I don't know whether you have

Re: [Elecraft] KPA500 fan noise

"Its to bad a replacement fan for the KPA500 from Noctua can't be found these are well engineered fans moving more air and quietly" Is the fan in the KPA500 a 92mm fan? Noctua makes a 92x92x25 mm fan... __ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 2/12/2017

[Elecraft] OT: be careful what you open

I'd like to thank the person who opened an E-Mail attachment that should not have been opened. The attachment contained a trojan horse -- malware that then harvested E-Mail addresses from their machine. I know it was a list member, because my E-Mail address for this list is exclusively used

Re: [Elecraft] K3S and Heil PR10

My mic gain is set to 9 as well. 73, Tom - KQ5S On Sat, Feb 11, 2017 at 9:28 PM, RIchard Williams via Elecraft < elecraft@mailman.qth.net> wrote: > Tom, > I would use whatever setting works the best; if you are receiving good > audio reports, "leave sleeping dogs lie". If your mic gain is set

Re: [Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

Jack, It would seem that you have tackled the most obvious stuff. I don't know whether you have a bad display or not, so I suggest you contact K3support to see if they might have seen a problem like that. I have heard about prior problems with PA MODE turning off, but I don't recall what is

[Elecraft] KPA500 fan noise

*/ I put a Noctua NF-A9x14 PWM pusher fan on the inlet this helped a bit,with a typical over during a cw rag chew at 28 wpm delays the onset of high speed by a couple of minutes depending on the temp in the shack. With the big fan on the back *off* my idle temp is 31c with *no* the helper

Re: [Elecraft] The market for Full Kit Radios?

Hey Harry... I hope you don't mind if I toss another idea out there. It has to do with a conversation going on in another forum I'm part of and thought it might make an interesting addition to your thoughts. I do not believe the homebrew spirit of Amateur Radio is dead. I do believe that there

Re: [Elecraft] EFHW

How about "All the local and DX QSOs with a random wire were not made with and end fed HALF-WAVE." On 2/11/2017 9:19 PM, Kevin - K4VD wrote: So what we are saying here is that all the local and DX QSOs we make from a picnic bench with an end fed or random wire thrown up in a tree and a short

[Elecraft] The market for Full Kit Radios?

For me a large part of the enjoyment of Amateur radio is the process of building the radios and accessories. I tend to like kits because all the truly hard work making the board punching and painting the case etc has been done for me and I get the fun of building it and then using something

Re: [Elecraft] EFHW

Don, As I said earlier in this thread, if the radio is on the ground, or near the ground, then the antenna is a vertical. I don't care what the slope is, it has a vertical component. A Beverage is a horizontal wire, but it is vertically polarized and works against ground. It may be lousy

[Elecraft] KX3/PX3/KXPA100 - PX3 taking 5 minutes to come on??? KXPA100 loses mind...

All, (particularly Don or one of the kind folks at Elecraft support) There are two seemingly interrelated problems in this message that may indeed be independent. All other helpful souls - before you post an answer, please read this ENTIRE message. I am a tech type and no stranger to

Re: [Elecraft] [K3] Noctua fan

Noctua fans are very popular in the computer enthusiast market because they move the same or better cubic feet per minute with significantly less noise. They are more expensive. When you buy a $5 fan...you get a $5 fan. I just built a new computer. Two intake fans down low blowing cool air

Re: [Elecraft] EFHW

Dan's original post concerned the effectiveness and practicality of various EFHW configurations in a man pack environment. Since he had already decided that his radiating element will be 1/2 wavelength long, the primary concern is power transfer efficiency vs. practicality of the solution in a

Re: [Elecraft] EFHW

Wes, I do not doubt what you are saying about 1/2 wave verticals, but most EFHW antennas are mounted as a sloper or a horizontal antenna. For portable operation, the main concern is for the ability to feed the antenna, and not about maximizing the far field strength. 73, Don W3FPR On

[Elecraft] Fwd: Re: Frequency Counter for Calibrating K3S

Slip up at this end, I didn't send it to the list. And whilst I'm resending I might as well mention that I am using the Leo Bodnar GPSDO to drive the REF IN port on my K3. I have found that the unit locks up within 30-45 seconds from power up with the antenna in the shack, near the north

Re: [Elecraft] EFHW

Alas, if only this was true. Google "radial system design and efficiency in hf verticals" and you should get a cached version of Rudy Severns' paper of the same name. In it he states: "Alternately we can graph efficiency in terms of Ga as shown in figures 3 and 4. Unfortunately this also

Re: [Elecraft] EFHW

I purposely overlooked the obvious error that broadcast band antennas are 1/2 wave length long. How many BCB stations has anyone seen with a free-standing transmitting tower between 400 and 1000 feet high? Most BCB (0.5 to 1.6 MHz) antennas are 1/8 wavelength high (or less) which necessitates

Re: [Elecraft] EFHW

On Sat, Feb 11, 2017 at 11:19 PM, Kevin - K4VD wrote: > ...The end fed is only 10% efficient (did I get that right)... == No, that's not right. The radiation pattern and gain of an end-fed halfwave are little different from a center-fed dipole. The efficiency of an

Re: [Elecraft] [OT] end-fed halfwave antennas

It is really unfortunate that advice like this continues to be...excuse the pun...propagated on forums such as this, when there is so much published information to the contrary freely available on the Internet and/or in books in your local library. I have already quoted one source but I'll do

Re: [Elecraft] EFHWD

Yes, if you can feed power to it. I don't understand all the innuendo about what works when some numbers can put things into perspective. Here are some EZNEC numbers. A 33' (1/2 wave on 20) wire on 20M with one end at 2' and the other at 25' Feedpoint % from endZ SWR 1.2

Re: [Elecraft] kx1 and earchi

I've done a lot of backpacking, and used a fair amount of RG-174. 12 or 13 feet of that weighs very little - about 13 grams or 1/2 oz., and would add to flexibility of antenna placement too. Thats my experience anyway. 73 Chip AE5KA On Sun, Feb 12, 2017 at 11:26 AM, Don Wilhelm

Re: [Elecraft] kx1 and earchi

Chip, A length of wire is much lighter than any coax, including RG-174. Important for those backpacking. 73, Don W3FPR On 2/12/2017 8:52 AM, Chip Stratton wrote: Try about 12 feet of RG-174 between your rig and your earchi transformer. That will make your .05 wl counterpoise for 80m without

Re: [Elecraft] EFHWD

Brian, I repeat what I have posted several times: A resonant dipole radiates the same no matter where it is fed - center, end or anywhere in between makes no difference in the radiation pattern. In other words, a dipole is a dipole, is a dipole. The dipole refers to the current/voltage

Re: [Elecraft] EFHWD

Hi John, This is great! Thank you for taking the time to write this. Having only experimented with centre fed dipoles as base antennas over the years these end feds open up a whole new set of placement possibilities for me. I have to confess prior to this I thought of (random wire) end feds

Re: [Elecraft] kx1 and earchi

Try about 12 feet of RG-174 between your rig and your earchi transformer. That will make your .05 wl counterpoise for 80m without much weight and without much loss on the higher frequency bands. Chip AE5KA On Sun, Feb 12, 2017 at 6:42 AM, kg8jk wrote: > Just picked up a couple

Re: [Elecraft] [OT] end-fed halfwave antennas

The EFHW antenna was not invented by anyone alive today. It is very definitely a classic antenna. It's just a very efficient antenna that has gone through periods of forgotten usefulness. An end-fed 80m half wave L, or other "bent" form, is an antenna that has been used successfully at least

[Elecraft] kx1 and earchi

Just picked up a couple of toroids at a swap and want to make an earchi antenna for the kx1. As I want to take this backpacking the plan is to connect directly to the radio and use a counterpoise instead of using coax in order to save weight. Has anybody found the secret length for the antenna to