[Elecraft] K3 Main Tuning Knob

2009-03-02 Thread Barry Simpson
There have been a few recent postings about removing the rubber cover from the K3 main tuning knob. I find that by placing your two thumbs firmly against the front of the knob and then pulling the rubber cover towards you with pressure from three fingers on each side of the knob, the rubber

Re: [Elecraft] K3 -- Copy FSK, commercial RTTY Stations, baud rate shift ...

2009-03-02 Thread Julian, G4ILO
Mark M W2OR wrote: Using the K3 FSK mode, is there a way to adjust the K3's RTTY Rx signal baud rate, or is it stuck at the lower amateur speeds? Am trying to copy that commercial station stuck on 10.101-MHz, getting beautiful register on the CWT bars, shift about 460-Hz or so, but no

Re: [Elecraft] [K2]...Hot glue toroids to PCB???

2009-03-02 Thread Peter, DL2FI
Mike, I had to repair a lot of customer kits in the past. Withn a few kits I found glued Torroids and believe me, I hate them!!! If you have do rewind the torroid itself or if there is a problem next to a torroid, the glue will cause a lot of problems. . I do not see any reason to glue

Re: [Elecraft] [K2]...Hot glue toroids to PCB???

2009-03-02 Thread Geoffrey Mackenzie-Kennedy
Mike, When mounting toroidal coils used at HF which sit upright on a pcb, my practice is to glue a small shim or spacer flat onto the main pcb where the coil is to be placed, and then glue the toroidal coil onto the spacer. I make spacers from scrap pieces of fibreglass pcb, the type that does

Re: [Elecraft] [K2]...Hot glue toroids to PCB???

2009-03-02 Thread Don Wilhelm
Mike, Please do not use any fixative on the toroids. I echo Peter's comments, I too repair many K2s and if the toroids are glued, they are a real pain to work with. I have *never* seen a problem with loose toroids, the wires hold them in place just fine. One of the K2s that I built logged

Re: [Elecraft] K2 IF Amp

2009-03-02 Thread Don Wilhelm
Peter, The 1.4 volts at W2 is good, but you should have more signal out of the crystal filter (at W3). Are you certain you peaked the signal in the filter by tuning the VFO? The tuning will be very sharp. Re-flow the solder on the crystals, the varactors, RP4 and RP5. Obtain the proper signal

Re: [Elecraft] K2/100 RX Filter Question

2009-03-02 Thread Don Wilhelm
Tom, Congratulations on your purchase of the used K2/100. Is this a case of setting the K2 in CW mode the first time and SSB mode the 2nd? The KDSP2 has different width filters for CW and SSB. The audible change when changing the CW filters is substantial, but may not be as obvious when the

Re: [Elecraft] Power off settings: ANT1 / ANT2

2009-03-02 Thread Robert Naumann
Nick, With all due respect and caution, please don't think that allowing for lightning to come into your radio with your radio's input being routed to your dummy load is better or provides any level of protection whatsoever over being solidly connected. The proper use of a lightning arrestor(s)

[Elecraft] external keyer

2009-03-02 Thread greenacres113
My K3 #2626 is a month old. I'm using an MFJ external keyer. I prefer the low [ to the desk]memory buttons. The K3 recall buttons require me to lift? my hand a bit where the outboard allows my hand arm to rest on the desk. 10% of us are left handed. Your main hand is always more accurate in

Re: [Elecraft] K2 IF Amp

2009-03-02 Thread Peter
Don, I used a scope to find the peak tuning the VFO. I re-soldered all pads in that area. In the meantime I checked the crystal filter. I injected a signal to J9 (W2) of 4913.72 kHz (I get the peak at this freq.) about 800 mV and got about 500 mV out at J10 (W3). On the scope the signal shape

Re: [Elecraft] Weird EMI issue... part deux

2009-03-02 Thread N2TK
James, I am getting a much lower level of noise than you. With no antenna and the preamp off, the first bar on the S-meter barely flickers. When I spin the dial quickly I can get as high as S3 noise. The noise disappears below 4.930 and above 5.110. I only hear the noise in the main receiver. I

Re: [Elecraft] [K2]...Hot glue toroids to PCB???

2009-03-02 Thread Lee Buller
Do not do this.  I use bees wax to secure one of my toroids down because I felt it needed it.  Well, it is a mess to work with.  I abandoned the practice and just used the wires to hold them in place.  Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you

Re: [Elecraft] K2 Mojo: Last year's ARRL DX contest

2009-03-02 Thread Julius Fazekas n2wn
Great going Mike!! I'll vouch for the K2 mojo, but with the KPA100... Managed the #10 slot SOAB LP in ARRL DX CW. The K2 is now configured more as a QRP mobile/portable rig. Watch for us QRP mobile in the WVQP and TnQP later this year. 72/3, Julius n2wn Mike, W9QS wrote: To my

[Elecraft] To: Elecraft- Suggestions

2009-03-02 Thread -.-. --.-N3TU -.-. --.-
Is it possible to have the radio go down to .100 khz instead of where it is now which is 500 khz? Is it also possible to have receive coverage from 30mhz-99mhz? If you take it out of transmit with a flashing tx and press the XMIT and spin the dial for a while, the frequency readout will go all

Re: [Elecraft] K3 QRPp

2009-03-02 Thread Julius Fazekas n2wn
Propagation was pretty darn good too... worked a Mn station running 5 watts who was 30 over in Tn. Folks were telling me I was pegging the needle running 100 watts. Really wasn't expecting those lind of comments, nor the DX worked either. QRP is surprisingly effective on 160 with a decent

Re: [Elecraft] K3 QRPp

2009-03-02 Thread d.cutter
Hi Julius What is your decent antenna, may I ask? Do you use rx antennas too? David G3UNA Julius Fazekas n2wn phriend...@yahoo.com wrote: Propagation was pretty darn good too... worked a Mn station running 5 watts who was 30 over in Tn. Folks were telling me I was pegging the

Re: [Elecraft] external keyer

2009-03-02 Thread d.cutter
That's very interesting and prompts me to think about having a small external key pad for repetitive key strokes; you're right, it is annoying to have to move the hand across the body; I'm not a southpaw, however. The external antenna selector has buttons on it for this sort of thing. David

Re: [Elecraft] K3 QRPp

2009-03-02 Thread Julius Fazekas
Hi David, I have a combo Tee. It has about 72' of vertical aluminum (2.5 tapering to 1.5) with a two wire sloping tophat. They slope down about 10 to 15 degrees, uneven to the nearest tall trees. The base of the antenna is about 10' away from the corner of the house and maybe 20 from the

Re: [Elecraft] K3 QRPp

2009-03-02 Thread Joe Planisky
For anyone considering trying QRP(p) operation, don't be put off by tales of super antennas. Yes, a good antenna always helps, and if you have an unusually good setup, by all means take advantage of it. But surprising results can be had with strictly average setups. This weekend, I

Re: [Elecraft] [K2]...Hot glue toroids to PCB???

2009-03-02 Thread Vic K2VCO
Mike-WE0H wrote: Building my K2. Does anyone see any issues with using hot glue to glue the toroids down to the boards? Elecraft doesn't recommend this. It's not needed to keep them in place and can be quite annoying if you want to remove one for some reason or adjust the inductance by

[Elecraft] K3 CW/MIC problems

2009-03-02 Thread Evert Bakker (PA2KW)
Hello, This weekend I found some time to connect my Micro-Keyer II to the K3. After playing around a while with the software (try and error method) I ended up with an K3 not doing what I want. I thought that the MKII was causing the problem so I disconnected everything except the paddle,

Re: [Elecraft] [K2]...Hot glue toroids to PCB???

2009-03-02 Thread Matt Palmer
If its that big of a deal to you there used to be a product called 'qdope' that was made for this purpose. With some frequencies various other things can cause havok, though i would believe in LF projects the effect is negligible. Matt W8ESE Former KD8DAO http://blog.MattIsKichigai.com On

Re: [Elecraft] [K2]...Hot glue toroids to PCB??? No is the answer...

2009-03-02 Thread Mike-WE0H
Wow, quite a response. The consensus is do NOT glue the toroids and I won't. One guy said he has a radio that traveled 500k miles in a big truck and I surely know what that kind of environment is like. Says a lot for the radio's durability right there. Thank you all for the help. Mike WE0H

Re: [Elecraft] Weird EMI issue... part deux

2009-03-02 Thread Jan Erik Holm
I have the same. Also on a number of other places between 0.5 - 30 MHz. Was there any response from Elecraft on this? / SM2EKM N2TK wrote: James, I am getting a much lower level of noise than you. With no antenna and the preamp off, the first bar on the S-meter barely flickers.

[Elecraft] K3 AGC hold, initial comments on beta v2.98

2009-03-02 Thread Mike Scott
I live in a noisy environment (typical S-7) and have in the past complained about K3 audio. I was never sure what was going on but it just sounded rough and unpleasant. The hardware audio modifications I think helped a little and most certainly cleaned up the line-out IMD. Mostly I operate CW

[Elecraft] K3 Audio and RF gain balance Main vs. Sub

2009-03-02 Thread Mike Scott
On my K3 the two audio pots for main and sub seem to track each other quite well, I generally align the white marks and turn them together and audio remains quite balanced. This is not so with the RF pots. The RF gain on the main will drop much-much quicker than the sub particularly as I go below

Re: [Elecraft] To: Elecraft- Suggestions

2009-03-02 Thread wayne burdick
On Mar 2, 2009, at 6:57 AM, -.-. --.-N3TU -.-. --.- wrote: Is it possible to have the radio go down to .100 khz instead of where it is now which is 500 khz? Hi Greg, The synth was designed to go down to only about 9 MHz, which means that in theory the typical K3 could tune as low as

[Elecraft] K3 SQUELCH for SSB and CW?

2009-03-02 Thread Lance Collister, W7GJ
Hello! I tried changing the CONFIG:SQ MAIN to SUB-POT as instructed on page 52 of the K3 Manual, but it did not seem to have any effect on USB and CW modes. It also did not seem to make the front panel RF knob work as a squelch in FM mode either - it only totally squelched the FM. Of

[Elecraft] K3 Audio out artifacts

2009-03-02 Thread Mike Scott
I have been investigating audio artifacts in connection with the K3 AGC hold experimental firmware. As a reminder, I live in a high noise area. As part of the investigation I have been looking at both Line Out and headphone audio using Spectrumlab on my PC. I am finding substantial 60-hz

Re: [Elecraft] K3 QRPp

2009-03-02 Thread Julius Fazekas n2wn
Personal records are the best! Everything else is just gravy ;o) 73, Julius Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 --- On Mon, 3/2/09, Joe Planisky (via Nabble)

Re: [Elecraft] To: Elecraft- Suggestions

2009-03-02 Thread Charles
On Monday 02 March 2009 14:57:08 -.-. --.-N3TU -.-. --.- wrote: Is it possible to have the radio go down to .100 khz instead of where it is now which is 500 khz? I second this request. Charles - M0BIN __ Elecraft mailing list Home:

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Randy Cook
I am using the 40m EndzFed at my QTH. It slopes from 10 ft outside my shack to 40 ft up into a redwood tree. I do not have a lot configuration for a decent 40M dipole. Although not recommended by PAR, I have worked stations on 60 and 80 meters with it using the K3 autotuner. I cannot

[Elecraft] [K3] Programmers reference for KDVR3?

2009-03-02 Thread Lee Imber
Hi, I am trying to test calling the internal K3 DVR from software. I can't seem to find reference to this in the programmers guide. Am I just missing it? If not, any hints on the commands to call M1-M4? I would love to be able to call my pre canned SSB recordings for ARRL DX SSB. 73 Lee

Re: [Elecraft] To: Elecraft- Suggestions

2009-03-02 Thread Mike-WE0H
Eventually there will be a 600 meter Amateur band, so covering 495kc to 510kc would be a nice feature for the K3. It would be the first commercial radio to cover 600 meters then. If there was a way to add a option kit for the K2 to do this, I would be #1 on the list to buy it...hi hi... 73

Re: [Elecraft] [K3] Programmers reference for KDVR3?

2009-03-02 Thread Iain MacDonnell - N6ML
Lee Imber wrote: Hi, I am trying to test calling the internal K3 DVR from software. I can't seem to find reference to this in the programmers guide. Am I just missing it? If not, any hints on the commands to call M1-M4? I would love to be able to call my pre canned SSB recordings

Re: [Elecraft] [K3] Programmers reference for KDVR3?

2009-03-02 Thread Andrew Faber
Lee, Those commands are in the programmer's reference (i.e., you simulate button pushes or button holds). You should send a K31 command first, to allow the button commands to work. I'm planning to do this in ARRL Phone this weekend from P49Y using my software, CQPWIN. I ended up having

Re: [Elecraft] K3 Audio out artifacts

2009-03-02 Thread Jim Brown
On Mon, 2 Mar 2009 09:36:20 -0800, Mike Scott wrote: Is there something about my test set up that I do not understand? Yes. The hum is probably in your test setup. Check out my tutorial on Ham Interfacing. http://audiosystemsgroup.com/HamInterfacing.pdf and the corresponding material in text

Re: [Elecraft] K3 Audio our artifacts

2009-03-02 Thread Jim Brown
On Mon, 2 Mar 2009 18:23:57 -, Dave Hachadorian wrote: would guess that the headphone output is expecting a low Z (~16 ohm?) termination, and your sound card has a high Z in. Try a terminating resistor across the headphone jack in parallel with your sound card. No, termination has nothing

[Elecraft] 40m relay in K2 LPF stage - sorry if this is blank

2009-03-02 Thread Jim Giercyk
All, I seem to have lost receive on 40m on my K2 (rev A, no 60m), and I am thinking that I have a bad relay in the LPF stage. I'm seeing some strange readings and wanted to get a consensus before attempting to remove a relay. So, here is what I see: With power off, measuring for

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread K4IA
I have used a PAR end fed with my K1 at the beach. I feed it at the top and run it from the condo balcony down at a slope to somewhere I can tie it off where no one will run into it. It works very well - better than an Outback vertical attached to the balcony. So far, no one has

Re: [Elecraft] [K3] Programmers reference for KDVR3?

2009-03-02 Thread Lee Imber
Thanks to all that replied. Works perfectly now. 73 Lee WW2DX On Mon, Mar 2, 2009 at 1:20 PM, Lee Imber l...@ww2dx.com wrote: Hi, I am trying to test calling the internal K3 DVR from software. I can't seem to find reference to this in the programmers guide. Am I just missing it? If

Re: [Elecraft] To: Elecraft- Suggestions

2009-03-02 Thread Wes Stewart
--- On Mon, 3/2/09, Charles m0...@m0bin.demon.co.uk wrote: From: Charles m0...@m0bin.demon.co.uk Subject: Re: [Elecraft] To: Elecraft- Suggestions To: elecraft@mailman.qth.net Date: Monday, March 2, 2009, 11:17 AM On Monday 02 March 2009 14:57:08 -.-. --.-N3TU -.-. --.- wrote: Is it

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread W5CEM
I used a 10/20/40 last year at FD with good results. Usually if I could hear 'em, I could work 'em was true, with the QRP caveat. Top about 35ft. in the air, bottom just a few feet off the ground. This was before I had my K3, but used the T1 with my FT817 and even used it on six meters for a few

Re: [Elecraft] K3 CW/MIC problems

2009-03-02 Thread Evert Bakker (PA2KW)
Subject: Re: [Elecraft] K3 CW/MIC problems VOX on ? Problem solved 73's, Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

[Elecraft] K3: CW - VOX

2009-03-02 Thread Evert Bakker (PA2KW)
Disabling TX-ing can be done by TX-TEST mode, so which specific situation requires disabling the VOX in CW mode? Just curious, no more 73's, Evert, PA2KW __ Elecraft mailing list Home:

Re: [Elecraft] 40m relay in K2 LPF stage - sorry if this is blank

2009-03-02 Thread Don Wilhelm
Jim, I don't understand your terminology. In most common usage, positive and negative have nothing that relates to continuity - a continuity measurement is usually expressed as an amount of resistance (usually low) between two points. Alternately, the conductivity can be expressed in mhos,

Re: [Elecraft] K3 AGC hold, initial comments on beta v2.98

2009-03-02 Thread W7TEA
I have lots of noise as well and use a 80m vertically polarized loop. (The best nearly invisible antenna I could manage and keep the CCnR cops at bay.) Not being a contester and compete in the CW pile ups only when I'm one of a few, I've found Slow AGC at the fastest setting (40) to work the

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread Rick Shindley
I used to work for a military radio manufacturer and I saw first hand what vibration can do to frustrate the best intentions of design engineers (hint: it gave new meaning to the term flying capacitor)! The K2 wasn't designed to withstand serious (military test-like) vibration. A few years back

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Jim
Randy, I have experimented with 1/4 wave slopers here with good success. Just wish the Par's would handle legal limit. 73 de KE4WY Jim -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Randy Cook Sent: Monday, March 02,

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread SidShusterman
I currently work for a military radio manufacturer and we vibrate everything we make because lives depend on our products. In cases where vibration is an issue we use RTV to provide a cushion. I am not suggesting anything just stating a commercial fact. Step away from the hot glue gun. It is

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread Matt Palmer
I doubt you use actual RTV but a RTV-like sealant. RTV contains acetic acid and will eat/corrode electronics and is a no-no for mil hardware. In mil spec hardware I doubt you are winding your own toroids. While it was common practice to do your own air wound coil knifing, the CMMI people have

Re: [Elecraft] K3: CW - VOX

2009-03-02 Thread Greg - AB7R
Many contesters like to assert a manual PTT instead of having the radio do it when sending CW. - 73, Greg - AB7R Whidbey Island WA NA-065 On Mon Mar 2 11:55 , Evert Bakker \(PA2KW\) sent: Disabling TX-ing can be done by TX-TEST mode, so which specific situation

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread w8zn
I believe there is lots of non out-gasing RTV's out there. I use it for power dividers all the time. Just smell it, it's pretty easy to tell the difference. Terry - Original Message - From: Matt Palmer To: SidShusterman Cc: elecraft@mailman.qth.net, Rick Shindley Sent: Mon, 2 Mar

Re: [Elecraft] K2/100 RX Filter Question

2009-03-02 Thread Tom Baxter
Thanks Don.   I bought a Nifty Mini-Manual ( http://www.niftyaccessories.com/Elecraft_RefGuide.htm ) for the rig and everything is starting to fall into place now.  I think I received about eight different manuals with the rig and that was one of the problems - trying to sort through them all

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Tom McCulloch
Chuck If your antenna is over salt water (even if that water in under the sand which is under your operating position) you are going to be a VERY happy ham. ANYTHING strung up of salt water will give absolutely fantastic results! Have fun with the PAR or anything else you use under those

Re: [Elecraft] K3: CW - VOX

2009-03-02 Thread Alexandr Kobranov
... and not only (HF) Contesters - a most users of complex transverter systems are not using any kind of VOX as need PTT control for sequencing etc... 73! Lexa, ok1dst K3/10 #727 Greg - AB7R napsal(a): Many contesters like to assert a manual PTT instead of having the radio do it when

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread SidShusterman
Exactly true on all counts. RTV will rot the parts eventually. Thanks Matt for stopping the thread before it gets out of control. I continue this off line with you :) Sid Matt Palmer wrote: I doubt you use actual RTV but a RTV-like sealant. RTV contains acetic acid and will eat/corrode

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread Mike-WE0H
Let's get a list together of safe RTV products for electronics use. Mike WE0H w...@comcast.net wrote: I believe there is lots of non out-gasing RTV's out there. I use it for power dividers all the time. Just smell it, it's pretty easy to tell the difference. Terry

Re: [Elecraft] K1 ANTENNA

2009-03-02 Thread WA6L
I have several antennas that I have tried with my KX-1. If you have the space to get it into the air, you can't beat the Par End Fed 1/2-wave dipole. It is easy to tune and gets surprising results. You do have to get one end into the air. A tree or light-pole works fine. On one occasion I

[Elecraft] OT: RTV related

2009-03-02 Thread Ken Kopp
In general, if your RTV product smells like acetic acid, it's corrosive. If it smells like Ben Gay (SP?) back rub, it's not corrosive. The corrosive kind, if applied where it can cure into the air won't be harmful. It's only when it's used in a closed area, like a connector box and can't air

Re: [Elecraft] K3 Audio our artifacts

2009-03-02 Thread Jim Brown
On Mon, 02 Mar 2009 18:58:58 +, Brian Alsop wrote: I'm wondering about a UPS supply that's attached to the computer. Do they only kick in when power goes out That is nearly always how they work. BUT -- if the transformer is energized, there will be a field. So it depends on how that

Re: [Elecraft] OT: RTV related

2009-03-02 Thread ai2n
Use GE RTV 162. Non-corrosive, electronic grade, UL listed. 73, Redd Ken Kopp k...@rfwave.net wrote: In general, if your RTV product smells like acetic acid, it's corrosive. If it smells like Ben Gay (SP?) back rub, it's not corrosive. The corrosive kind, if applied where it

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Jim Brown
On Mon, 2 Mar 2009 10:16:27 -0800, Randy Cook wrote: HOW MANY OF YOU ARE USING PAR ELECTRONICS END FEDS This is a VERY easy antenna to build. Why would anyone want to buy what they can build in an hour for a fraction of the cost? See http://audiosystemsgroup.com/NCDXACoaxChokesPPT.pdf One

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread J.H. de Wit
And the K1 and KX1 tunes it on all bands! (of course with the built-in tuners) 73 de John pa0wit -Oorspronkelijk bericht- Van: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] Namens W5CEM Verzonden: maandag 2 maart 2009 20:36 Aan: elecraft@mailman.qth.net

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Ron D'Eau Claire
The PAR End-Fedz (Par's spelling) is a Fuchs type antenna; an end fed 1/2 wave radiator. Its advantage over shorter radiators is that it requires very little ground, if any, since it's fed at a voltage loop. Efficiency is not compromised by a mediocre ground as is so common with radiators 1/4

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread SidShusterman
I was asked to make this information to the group. Sid Sid, There is a variant of RTV that is OK on circuit boards. It is made by MG Chemicals specifically for electronics. It is catalog number 1035, and comes in 85ml tubes. We buy it from Allied (www.alliedelec.com), stock number

[Elecraft] [K3] Nabble: new look and feel (if you read the Elecraft list on the web)

2009-03-02 Thread Leigh L. Klotz Jr WA5ZNU
If you read the Elecraft mailing list through the Nabble website, please read on. If you don't, but want to, please read on. If you don't, and don't want to, well, I guess don't read on. * What if I don't use Nabble? What effect does this change have on me? Absolutely none. * What is Nabble

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread David Gilbert
Hi, Jim. I had thought about that concept years ago when I was doing more casual QRP portable operation (camping, Flight of the Bumblebee-type stuff, etc), but I never tried it because I just assumed that the impedance at the end of a dipole (i.e., where the choke would be on the coax) was

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Dave-K7DAA
For those that may be newer on the list that would like to see an example of a good homebrew 1/2 wave end fed setup, here's a good one (with pictures and schematic) on the QRP ARCI site. It was posted by Steve Yates, AA5TB: http://www.qrparci.org/content/view/59/55/ I've used a slight

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Jim Brown
Ron, A few quibbles with your analysis. First, the antenna that I have described is a simple half wave dipole, fed at a current maxima. The only tricky part is the power rating of the choke that serves as the end insulator. My choke is NOT a matching element, it an end insulator! Second,

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread David Cutter
Dow Corning make a range, 3140 is one I've used. It's very expensive compared to the acetic acid bathroom sealant variety. David G3UNA - Original Message - From: SidShusterman k...@comcast.net To: elecraft@mailman.qth.net Sent: Monday, March 02, 2009 10:21 PM Subject: Re: [Elecraft]

Re: [Elecraft] K3 Audio out artifacts

2009-03-02 Thread Bob Tellefsen
Hi Scott Out of curiousity, on the headphone output, are you running it directly into a sound card to use SpectrumLab? Or do you have some amount of resistive load on the audio output with measurement across the load? 73, Bob N6WG - Original Message - From: Mike Scott m...@paxsen.com

Re: [Elecraft] K3 Audio out artifacts

2009-03-02 Thread Mel Farrer
Doing critical audio tests can be very demanding.  Circulating currents and non common ground loops are particularly a problem.  I have had to use a TOPAZ Ultra isolation line noise suppressor transformer to supply AC to both the UUT and the scope/spectrum analyser.  This forces the ground

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Geoffrey Mackenzie-Kennedy
Jim Brown wrote on Monday, March 02, 2009, at 11:09 PM: A few quibbles with your analysis. First, the antenna that I have described is a simple half wave dipole, fed at a current maxima. The only tricky part is the power rating of the choke that serves as the end insulator. My choke is

[Elecraft] Elecraft ssb net

2009-03-02 Thread Brett Gazdzinski
I have to try to get on this net, since I have been unable to make any ssb contacts with the K2. I did have a qso with someone I know from AM operation, he was running a weekend ssb net, and I jumped in at the end, with the qrp K2. I also did answer a CQ I heard on 80 meters, and had a short qso

Re: [Elecraft] K3 power loss: Last settings forgotten

2009-03-02 Thread Ron D'Eau Claire
Following Eric's report of having his KAT3 hang in a strange state after powering down without first pushing the K3 POWER button, I queried Wayne about how this could happen. He pointed out that can be the case if an EEPROM write operation happens to be in progress when the power is removed. He

Re: [Elecraft] 40m relay in K2 LPF stage - sorry if this is blank

2009-03-02 Thread Jim Giercyk
Thanks Don, You're right, my email was a little ambiguous. I am using the 'Continuity' tester on my DVM to get a relative (between relays) idea of what I should see. As you pointed out, it's difficult to make accurate resistance readings across relays. The continuity tester has a fixed

[Elecraft] hot glue for toroids

2009-03-02 Thread Brett Gazdzinski
I have found commercial gear that has a toroid holder, a plastic like thing the toroid sits in, the wires pass through and wrap around the form, then get soldered. The form has small pins that fit in holes in the circuit board, and the toroid is held slightly above board. I have one I got out

Re: [Elecraft] 40m relay in K2 LPF stage - sorry if this is blank

2009-03-02 Thread Jim Giercyk
Sorry, of course I mean that the continuity tester reads 0 ohms, not 0 volts. That's embarrassing. :o --- j...@giercyk.com wrote: From: Jim Giercyk j...@giercyk.com To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] 40m relay in K2 LPF stage - sorry if this is blank

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Jim Brown
Have you been able to verify that a simple choke really blocks the shield current there? Yes, it works -- IF the choke has a sufficiently high impedance. Or am I misunderstanding something? No. You can see another way to do this on N6LF's website. 73, Jim K9YC

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Jim Brown
On Tue, 3 Mar 2009 00:15:04 -, Geoffrey Mackenzie-Kennedy wrote: If a resonant trap is placed at the bottom end instead of a choke as an insulator, A coaxial choke wound on a ferrite core IS a parallel resonant circuit. Properly done, the choke should be wound to place the resonant

[Elecraft] K2 Mods and changes

2009-03-02 Thread Dave Anderson, K4SV
Hi All, I have an un-built K2 kit SN 3086. Is there a good place to look for mods and changes between Rev D and Rev G of the manual?  Elecraft site has a bunch of stuff but I must have missed this important document. My goal is to make whatever changes to bring my un-built K2 to 2009 Rev's

Re: [Elecraft] [K3] Antenna switching

2009-03-02 Thread rkayakr
Mike A simple, inexpensive solution might be to use the MFJ-1703 RF safety switch. You can attach the TX and RCX to two ports and two antennas to the other two. Flipping the switch swaps antennas, but there is no position that connects TX to RCV. I use one to connect an antenna and a dummy load

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread Dale Putnam
I wonder, would clear candle wax work well? It would tend to keep the moisture out, and be stiff enough to hold the toroid in place, also be easily removable with todays tools. One drip would do. Or would that be drop? --... ...-- Dale - WC7S in Wy

[Elecraft] WTB: K3/100

2009-03-02 Thread NZ8J
Anyone have a late serial number K3/100 they want to part with before I put in an order? If so send me the particulars to include the price shipped priority mail to zip 45324.. Thanks Tim Nz8J __ Elecraft mailing list Home:

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Geoffrey Mackenzie-Kennedy
Jim Brown wrote on Tuesday, March 03, 2009 at 12:59 AM A coaxial choke wound on a ferrite core IS a parallel resonant circuit. Properly done, the choke should be wound to place the resonant frequency where the antenna will be operated! Study the references I cited in the earlier post. Yes,

Re: [Elecraft] WTB: K3/100

2009-03-02 Thread W5CEM
Tim...place your order. It is a blast to assemble and a GREAT radio! cleve/W5CEM -- View this message in context: http://n2.nabble.com/WTB%3A-K3-100-tp2412961p2413069.html Sent from the Elecraft mailing list archive at Nabble.com.

Re: [Elecraft] K2 Mods and changes

2009-03-02 Thread Don Wilhelm
Dave, Your K2 has all the A to B mods already on the board. The only additions since your K2 serial number are the Keying Waveshape Mod and the addition of diodes D40 and D41 for the Extremely Strong Signal Handling Mod. You can find the information at the Elecraft website. The keying

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread James Sarte
Dear Dale, Forgive me if I've missed previous email messages, but I still see no point in securing the toroids with anything else other than solder??? Why can't one just solder them in properly? Do you really need to secure them any other way? A good solder WILL NOT BREAK unless you rip it out

Re: [Elecraft] hot glue K2 toroids?

2009-03-02 Thread Dale Putnam
Hi James, You are certainly correct, good solder won't break, however, constant viberation, will stress the unsoldered wire above the solder. and even above the tinning. especially if the wire has been slightly nicked, or bent. Less movement of the core, (toroid) would keep that from

[Elecraft] NG0R - K2 160m alignment problem.

2009-03-02 Thread John Hoaglun
I am having a problem with the 160m alignment. When I power up the radio I do not get any error messages. If I test the receive antenna via the menu I can hear the K2 relay open and close as expected. When I disable the ATU with the CALP/CALS setting and then try to engage the radio via the Tune

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Don Wilhelm
Folks, I fail to see the advantage of constructing an end fed dipole with coax for half of the antenna - it requires a choke that has a parallel resonant frequency equal to the operating frequency, and the overall length is a half wavelength. I believe it is much easier to construct a half

Re: [Elecraft] K2 Mods and changes

2009-03-02 Thread Don Wilhelm
Dave, There is one other change that is needed on your K2 to bring it up to date, and that is the K2 Temperature Compensated PLL Reference Mod (E850138). Thanks to Gary Hvizdak (of Rework Eliminator fame) for bringing that omission to my attention. That change was included with K2s above SN

[Elecraft] K3 Utility Terminal Mode and Data Operation

2009-03-02 Thread Lance Wilson
I have just got a K3/10 going and like most owners of the K3 I find it to be the best radio that I have owned. Aside from the excellent RX performance I am especially taken by the built-in PSK/RTTY capability. It only took about 15 minutes of playing around with this capability to get the hang of

Re: [Elecraft] NG0R - K2 160m alignment problem.

2009-03-02 Thread Don Wilhelm
John, There may be no problem - set the power to something grater than 2 watts. With the KAT2 installed, the K2 automatically limits the power to 2 watts for tuning. If your power setting is a bit below that, the LO PWR message may result. 73, Don W3FPR John Hoaglun wrote: I am having a

Re: [Elecraft] PAR End-Fedz

2009-03-02 Thread Dave Agsten
I've used a PAR End-Fed on 30 meters with great results. I'm planning on buying the 17 meter version and maybe one for 15. I use it as a half-wave sloper. I'd recommend giving one a try. 73, Dave N8AG __ Elecraft mailing list

Re: [Elecraft] PAR End Fed Half Wave antenna

2009-03-02 Thread Joe W2KJ
I've been using two PAR EFHW (End Fed Half Wave) antennas in portable ops for several weeks now with excellent results. I have the 20/40M and the 10/20/40M antennas that I use at the local park. What I like about these antennas, besides the fact that they work very well indeed, is that no

Re: [Elecraft] PAR endz-fed

2009-03-02 Thread Jim Brown
On Mon, 02 Mar 2009 22:48:03 -0500, Don Wilhelm wrote: I fail to see the advantage of constructing an end fed dipole with coax for half of the antenna The advantage is if it solves a particular rigging problem that you encounter. 73, Jim K9YC