Re: [Elecraft] K3(s) main oscillator calibration

If you look at my earlier message in this thread, you'll see the link to nabble and my post from 11 years ago where I describe this method. :-) Wes  N7WS On 6/7/2020 6:03 AM, Randy Farmer wrote: The best way I've found to calibrate the K3 reference oscillator is to use the 500 Hz and 600 Hz au

Re: [Elecraft] K3(s) main oscillator calibration

The best way I've found to calibrate the K3 reference oscillator is to use the 500 Hz and 600 Hz audio tones transmitted by WWV. I put the line out audio through a sound card and look at it with SpectrumLab. Tune in WWV in USB or LSB mode and tweak the reference trim until the tones are correct

Re: [Elecraft] K3 with 2m internal transverter

Hi Jim, You are right I believe. The effective receiver performance is determined by the transverter. But especially for EME you would like to have a preamp with the best possible noise factor at the antenna to compensate for feedline loss. Vy 73 de OZ1CCM, Kjeld -Original Message- Fr

Re: [Elecraft] K3(s) main oscillator calibration

I have seen a lot of answers. These are all true, but what is the exact way of working. 73 Henk -Oorspronkelijk bericht- Van: elecraft-boun...@mailman.qth.net Namens Wes Verzonden: zaterdag 6 juni 2020 21:22 Aan: elecraft@mailman.qth.net Onderwerp: Re: [Elecraft] K3(s) main oscillator

Re: [Elecraft] K3(s) main oscillator calibration

Thanks for the info, I think the other ham that asked Wayne, was me... :) I don't need absolute accuracy, I just wanted no steps is all... I will go pick up an older Icom, or something along that line. I had a Pro III and it worked for my application, watching short term changes in the Ionos

Re: [Elecraft] K3(s) main oscillator calibration

From my take, it is "ham radio" therefore +/-1 Hz. should be good enough for most operations.  After all, the K3S resolution is 1 Hz., +/-1 count as I see it.   I can keep mine +/-2 or 3 Hz on most bands. I use WWV with the radio in CW mode and CWT on, tune close to WWV and press SPOT.    If i

Re: [Elecraft] K3(s) main oscillator calibration

All synthesized radios tune in steps. The difference between them is some are smaller steps than others.  Eleven years ago I offered a fourth method for calibrating the reference frequency in a K3. (I suspect, but do not know that the K3S is different.)  See: http://elecraft.365791.n2.nabble.co

Re: [Elecraft] K3(s) main oscillator calibration

With the main K3 fine tuning at 1 Hz steps, I don't know that 0.1Hz or even 0.25Hz doppler shift will matter much in the final result. My frequency counter is good to 10 exp-9 which equates to +/-0.1 Hz at the TCXO frequency, so the WWV method provides as good or better accuracy, even consider

Re: [Elecraft] K3(s) main oscillator calibration

Hi, As the other station siad, you will have Doppler issues. Also the K3 tunes in steps, which make sustained .1 hz accuracy a dream, not attainable. It looks to tune in .25 Hz., or larger steps. I am going from memory here, so it may be something different. I wanted to use my K3 to watch

Re: [Elecraft] K3(s) main oscillator calibration

the problem with WWV is doppler shift. Sent from my iPad > On Jun 6, 2020, at 5:27 PM, w4sc wrote: > > I like the zero beat WWV method. Used it in the Navy to calibrate / PM the > 10MHz frequency standards aboard ship. Requires the least amount of test > equipment! If you can receive WWV

Re: [Elecraft] K3(s) main oscillator calibration

I like the zero beat WWV method. Used it in the Navy to calibrate / PM the 10MHz frequency standards aboard ship. Requires the least amount of test equipment! If you can receive WWV on 20MHz to calibrate the K3/K3S, all the better, Using a frequency counter I would think 0.1Hz resolution a

Re: [Elecraft] K3(s) main oscillator calibration

The various reference calibration methods, including direct measurement of the TCXO that I do, just determine what the actual reference frequency is, but don't change it. This value is then used internally to compute the correct frequencies. Wes  N7WS On 6/6/2020 11:47 AM, h...@kpnplanet.nl w

Re: [Elecraft] K3 Spontaneous Failure

Good advice. Don't do EEInit unless you are sure you have a good configuration backup. Given the state of the radio now, doing a backup might not give you good data. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 06/06/2020 17:32, Bob McGraw wrote: Su

Re: [Elecraft] K3 Spontaneous Failure

Yes Pull the front panel and clean pins with Deoxit and reassemble. Sent from my iPhone ...nr4c. bill > On Jun 6, 2020, at 10:13 AM, Jim McCook wrote: > > Thanks to those who responded with good suggestions. This morning I turned > it on and saw a different set of error codes, but there w

Re: [Elecraft] K3 Spontaneous Failure

Sure sounds like dirty contacts related to the front panel.    I would NOT try re-initialization without being sure the radio is working as it should and reliably.   One could end up with more than one issue to deal with and diagnose. 73 Bob, K4TAX On 6/6/2020 9:11 AM, Jim McCook wrote: Than

Re: [Elecraft] K3 Spontaneous Failure

radio surely needs some additional upgrades too. 73 Frank W3LPL - Original Message - From: "Jim McCook" To: "Elecraft Reflector" Sent: Saturday, June 6, 2020 2:11:33 PM Subject: Re: [Elecraft] K3 Spontaneous Failure Thanks to those who responded with go

Re: [Elecraft] K3 Spontaneous Failure

Thanks to those who responded with good suggestions.  This morning I turned it on and saw a different set of error codes, but there was audio.  Powered off and on and saw MAIN freq display, but SUB had disappeared.  More power off/on resulted in going back to normal operation.  It has been fine

Re: [Elecraft] K3 Spontaneous Failure

I would definitely try pulling the front panel off an then reinstalling it, possibly with a few drops of Deoxit on the pins. It isn't difficult at all, and I think it's worth a try. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 06/06/2020 7:33, Jim Mc

Re: [Elecraft] K3 tx power troubles

Hi Bill, I have the K3 working again, currently going great stuff on 10m to give it a good workout. Problem was one of those silly ones but also one that I have just recently read about on the reflector, the case of a loose TMP coax. In my case it turned out to be J7 on the KREF3 board. Mart

Re: [Elecraft] K3 Spontaneous Failure

Ted, thanks for the note.  I checked the error list immediately after the failure and thought about that EPROM failure as a possibility.  The power supply is fine.  The radio had been powered up and failed while I had dinner.  I know there are some pin connectors to the front panel that could b

Re: [Elecraft] K3 Spontaneous Failure

Jim, The K3 manual downloaded tonight, on page 69 says ... == ERR EE2 == External EEPROM read/write test failed EEPROM may be defective (front panel).

Re: [Elecraft] K3 with 2m internal transverter

While I use an external transverter with my K3S, I do not suggest using the K3 internal preamp.  The transverter has adequate gain and also a good low noise front end. 73 Bob, K4TAX On 6/5/2020 2:03 PM, Jim Miller wrote: Helping a friend to try to get the most out of his 2m equipped K3 espe

Re: [Elecraft] K3 QSK Timing

Well, that is probably how Elecraft came up with the published spec of 8 ms. But since what I'm concerned with is preventing hot-switching, my number is more useful. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 02/06/2020 19:39, Al Lorona wrote: Re

Re: [Elecraft] K3 QSK Timing

Really interesting, Vic. Here's a minor point: Instead of measuring to the "first whiff" of RF, I'd probably measure to the point of 90% of max RF value. This is because the rise time of a pulse is usually defined as the time to go from 10% to 90% of the final (peak) value.  Congratulations on

Re: [Elecraft] K3 QSK Timing

"In short, hearing between elements gave us bragging fodder but served no real practical purpose. " My interest was from an engineering perspective. I found that, at typical contest and DX chasing speeds, the TS-590S BDLY-FBK (full break-in) setting offered no operational advantage. I chose t

Re: [Elecraft] K3 QSK Timing

For any practical purpose needed by amateur radio operators that I can think of, the ability to hear between elements is not a life-and-death virtue. The ability to hear between characters is by far magical enough. I speak as one who has been doing 30 wpm full-QSK traffic work for 60 years,

Re: [Elecraft] k3 no control

Guys. Yes, he knows he needs a new KUSB. He’s had it on order for 2 weeks now and is awaiting delivery. No need to keep telling him to do what he’s already done. Sent from my iPhone ...nr4c. bill > On May 27, 2020, at 5:57 PM, Ian Kahn wrote: > > Joe, > > The Prolific chip set has a lo

Re: [Elecraft] K3 on battery?

"Working" rather than working well with a clean signal are two different things. A K3(S), as well as almost any other "12V" rig, is prone to increased TX IMD as the supply voltage is reduced.  For FD, with reduced efficiency antennas and no amplifiers, it's probably okay, but for everyday use,

Re: [Elecraft] k3 no control

Joe, The Prolific chip set has a long history of issues. It goes back to when the Chinese started making knock-offs of them, and pirating the drivers. You probably got a bad driver set in your download. As Don said, get rid of that cable. Get one with an FTDI chip set in it. The Elecraft KUSB cabl

Re: [Elecraft] k3 no control

Joe, Does the display show MCU LD and the red TX LED blinking? If so, you need to follow the steps to "Force a Firmware Download" listed in the K3 Utility HELP file, or refer to the same instructions in the manual. Get rid of that Prolific USB to Serial adapter and get one with the FTDI chip

Re: [Elecraft] K3 on battery?

It works ok until the battery gets to 11 Bolts under TX. Note: as voltage goes down the current goes up and as voltage goes down the IMD also goes up. My club uses two batteries on series and a buck converter to control voltage to 14 volts. Sent from my iPhone ...nr4c. bill > On May 27

Re: [Elecraft] [K3] KAT3 not functioning on 6m

Bill Upgrading to KSYN3A, you should run the High Power TXGAIN Calibration according to the installation instructions. Actually, I had to run the WATTMETER, and BOTH the LP (5W) and HP (50W) calibrations to “cure” the same issue you are observing. Installing the KSYN3A in a K3 results in l

Re: [Elecraft] K3(s) SteppIR control

Namens Lou W0FK Verzonden: dinsdag 19 mei 2020 15:21 Aan: elecraft@mailman.qth.net Onderwerp: Re: [Elecraft] K3(s) SteppIR control The "official" SteppIR cable schematic also shows that Pin 3 (TXD out on the K3S's RD232 DE9) is also to be connected. https://groups.io/g/steppir/f

Re: [Elecraft] K3(s) SteppIR control

Is that connection needed? If it is connected, might it obviate the need for a separate CAT program? If the SteppIR controller is connected in parallel with a computer the TxD line *must not be* connected as it will load the TxD output of the computer and *neither* device will be able to poll

Re: [Elecraft] K3(s) SteppIR control

The "official" SteppIR cable schematic also shows that Pin 3 (TXD out on the K3S's RD232 DE9) is also to be connected. https://groups.io/g/steppir/files/Controller%20Cable%20Schematics/S-26_21-6026-01%20Cable,%209%20pin%20FM%20to%20Male%202%203%205.pdf Is that connection needed? If it is connect

Re: [Elecraft] [K3/K3s] RF Gain Control

dB in both the main and sub-receivers. 73, Mark, WB9CIF -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Dave Cole Sent: Monday, May 18, 2020 04:08 To: Nr4c ; Bill Frantz Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3/K3s] RF Gain Control Thanks! 73

Re: [Elecraft] [K3/K3s] RF Gain Control

ehalf Of Dave Cole > Sent: Monday, May 18, 2020 04:08 > To: Nr4c ; Bill Frantz > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] [K3/K3s] RF Gain Control > > Thanks! > > 73, and thanks, > Dave (NK7Z) > https://nam11.safelinks.protection.outlook.com/?u

Re: [Elecraft] [K3/K3s] RF Gain Control

Frantz Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3/K3s] RF Gain Control Thanks! 73, and thanks, Dave (NK7Z) https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.nk7z.net%2F&data=02%7C01%7C%7Ce91b1c000fd3451e2d2208d7fae14ac0%7C84df9e7fe9f640afb435%7C1

Re: [Elecraft] [K3/K3s] RF Gain Control

Thanks! 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist ARRL Asst. Director, NW Division, Technical Resources On 5/17/20 8:50 PM, Nr4c wrote: I think the upgrade for K3 and the K3S provides still one level ATT but two levels of PREAMP on 12, 1

Re: [Elecraft] [K3/K3s] RF Gain Control

I think the upgrade for K3 and the K3S provides still one level ATT but two levels of PREAMP on 12, 10 and 6 meters. Sent from my iPhone ...nr4c. bill > On May 17, 2020, at 11:44 PM, Bill Frantz wrote: > > I think on the K3 you only have one level of ATT, unless you have upgraded > the rig

Re: [Elecraft] [K3/K3s] RF Gain Control

I think on the K3 you only have one level of ATT, unless you have upgraded the right piece. 73 Bill AE6JV On 5/17/20 at 10:16 PM, d...@nk7z.net (Dave Cole) wrote: I looked at my K3, (not S), and I have a single step of ATT 10 DB, should I have more, or is it just the K3S that has multi steps.

Re: [Elecraft] [K3/K3s] RF Gain Control

On 5/17/2020 5:11 PM, Bob McGraw K4TAX wrote: For 10M & 6M I run Pre 1. RF gain is then adjusted per band as needed depending on band noise. You must be in a pretty noisy location, Bob. Sometimes my QTH is pretty quiet in some directions, sometimes it's noisy. I ALWAYS need Preamp 2 on 12,

Re: [Elecraft] [K3/K3s] RF Gain Control

I looked at my K3, (not S), and I have a single step of ATT 10 DB, should I have more, or is it just the K3S that has multi steps. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist ARRL Asst. Director, NW Division, Technical Resources On 5/17/20

Re: [Elecraft] [K3/K3s] RF Gain Control

In all instances, 160M, 80M, & 40M, I run 15 dB Attenuation. For 10M & 6M I run Pre 1. RF gain is then adjusted per band as needed depending on band noise. Bob, K4TAX Sent from my iPhone > On May 17, 2020, at 5:30 PM, donov...@starpower.net wrote: > > Hi John, > > > The K3/K3S "RF Gain"

Re: [Elecraft] [K3/K3s] RF Gain Control

Hi John, The K3/K3S "RF Gain" control doesn't control any RF stage at all... It actually controls the gain of the 8.215 MHz IF amplifier immediately following the 8.215 MHz roofing filters which then controls the 8.215 MHz IF signal level feeding the 2nd mixer. See the K3 RF Board schemati

Re: [Elecraft] K3(s) SteppIR control

Henk: I also have a K3s, P3, and Steppir SDA-100. It took me some time to get it working well, but it works quite well now. See the inserted sketch I do have to have a CAT program operating in order for the SDA-100 to

Re: [Elecraft] K3(s) SteppIR control

Hi Andy, You are right, that is the missing link. I already took the SDA100 apart and found out the RS232 receiver MAX202 TTL output was not going anywhere Indeed it goes to an internal (open jumper), which also connects to pin 7 and 9. Thanks for helping me out 73 Henk -Oorspronkelij

Re: [Elecraft] K3 XMIT/TUNE button doesnt work

thanks Don I sent you a direct email but was rejected 554 5.7.1 [P4] Message blocked due to spam content in the message. 73, Jorge El vie., 8 may. 2020 a las 23:21, Don Wilhelm () escribió: > Jorge, > > I believe you have to replace the Button matrix pad. Contact > supp...@lcraft.com for mo

Re: [Elecraft] K3 XMIT/TUNE button doesnt work

Jorge, I believe you have to replace the Button matrix pad. Contact supp...@lcraft.com for more information and guidance. 73, Don W3FPR On 5/8/2020 4:40 PM, Jorge Diez - CX6VM wrote: hello my K3 have a problem with this button. some weeks ago, I need to push it hard to have it working. N

Re: [Elecraft] K3 current draw

Hi David; You can tap DISP and rotate VFO B knob to see the current. Then set "tun pwr" to nor, select desired power out, and long press XMIT to send a carrier and see the current. (do not TX at exactly 5 or 50w as that will cause a TX gain calibration). That will give you a close reading. The

Re: [Elecraft] K3: OK to Use Mono Adapter Jack on “Key” port?

Brian, A simple stereo to mono adapter may not do that - it depends on how the adapter is wired. What is required is that the tip and ring of your paddle plug are both connected to the tip of the adapter plug. If you have a schematic for the adapter, that may help - but take your ohmmeter a

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

What a fascinating story! Thank you for sharing. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist ARRL Asst. Director, NW Division, Technical Resources On 4/24/20 4:35 PM, donov...@starpower.net wrote: In 1969 -- right out of college... __

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

K3 are much less frequent than in the R-1414 and apparently do not cause problems for digital signals. 73 Frank W3LPL - Original Message - From: "Dave Cole" To: donov...@starpower.net, elecraft@mailman.qth.net Sent: Friday, April 24, 2020 9:23:28 PM Subject: Re:

Re: [Elecraft] K3/K3S receiver and high-precision frequencydetermination?

It's a good thing I didn't carry through on my plan to operate the K3 with a paper in the place of the top cover! That was a close call. Seriously, don't *all* DDSs/PLLs/synthesizers/SDRs (and, thus, all modern transceivers) tune in steps? How is the tuning step related to the stability of an o

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

*elecraft@mailman.qth.net *Sent: *Friday, April 24, 2020 9:09:52 PM *Subject: *Re: [Elecraft] K3/K3S receiver and high-precision frequency determination? Thanks for the explanation, I have always wondered why...  I'm good with low phase noise, Low phase noise means less splatter from radios! All the

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

24, 2020 9:09:52 PM Subject: Re: [Elecraft] K3/K3S receiver and high-precision frequency determination? Thanks for the explanation, I have always wondered why... I'm good with low phase noise, Low phase noise means less splatter from radios! All the folks close to me have purchased K3s,

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

Thanks for the explanation, I have always wondered why... I'm good with low phase noise, Low phase noise means less splatter from radios! All the folks close to me have purchased K3s, so even though they are close, it is not too bad. I had a friend that lived 700 feet from me, and had a Coll

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

Dave, Thanks, that may have been the thread I was remembering. While searching old messages, I also came across a post from Ed Cole KL7UW from June 2018 in which he stated that, even if an external reference is connected, the K3 frequency "is established by the [internal] TCXO and the externa

Re: [Elecraft] K3/K3S receiver and high-precision frequency determination?

Hi, That was me... I used to use my Icom 756 Pro, to watch the Doppler on changes in the ionosphere, and on Meteors. The K3 uses steps to correct frequency, while the Icom did not. Analog vs. Digital corrections. Accuracy is not an issue, it is the steps... They destroy the continuity of

Re: [Elecraft] K3/K3S receiver and high-precision frequencydetermination?

I don't recall that discussion you're talking about, but I can say the K3(s) has nowhere near that stability or resolution. (At least mine doesn't)  I don't know why Elecraft would design intentional instability into the radio. During a recent thread about the TCXO option, I did some quick-n-di

Re: [Elecraft] K3 ALC Behavior When Using WSJT-X

I went through a similar problem with a friend who is running an Icom 7700. Set the power out on the K3 to 10 watts. Key up in RTTY and verify 10 watts out. Now lower the USB data out on the K3 and then click tune in WSJT-X. You want to adjust the USB data out to where the radio just reaches 10

Re: [Elecraft] K3 (not S) line out question

Thanks Don. -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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 host

Re: [Elecraft] K3 (not S) line out question

That is the convention for audio cables. So YES. 73, Don W3FPR On 4/21/2020 12:55 PM, Barry wrote: The manual says, "Normally, the left channel is main receiver audio, and the right channel is sub receiver audio (if applicable). " So is the left channel (main) the tip and the right channel (su

Re: [Elecraft] K3 Utility vs macOS Catalina

Sorry, if someone mentioned this, but the original KUSB uses a Prolific chipset. That’s always been temperamental. Plugable.com have drivers for 10.15.3 but you have to buy them and I haven’t tried them. 73 de David, M0XDF The difference between genius and stupidity is that genius has its limits.

Re: [Elecraft] K3/KAT500/XV integration

You can try it, but I think the real solution may be to leave the XV powered while the K3 is on. The reason is that the XV has weak pull-up to +5V on its Auxbus line. When the XV is off, that 5V line is actually at 0 volts, which means it is pulling the signal to the common reference. This, alo

Re: [Elecraft] K3/KAT500/XV integration

Jack; In my setup, the XV is connected to 12V, but is not "on" until it is selected by changing the K3 to 2 meters (which, of course, is just what it won't do.) The KAT500 is normally left on 24/7. I do not use the "Auto" selection on the KAT500, so it can't surprise me with an unwanted tun

Re: [Elecraft] K3/KAT500/XV integration

George; That message occurs because something is loading the Auxbus when the K3 is powered on. Make sure that the KAT500 and the XV144 are both powered up when you turn on the K3. They can be powered on at the same time, but the task needs to be done before the K3 enumerates the Auxbus, which i

Re: [Elecraft] K3 High SWR

I've used this source for Bird elements and dummy loads with very good success.   Although most may be "used" they are guaranteed and he has a good return policy if needed. Here is an example of a Bird 100 watt dummy load for $50.00 DB4303B W/N-Male Connector (NOT  SMALLER DB4303 or G)   For a

Re: [Elecraft] K3 High SWR

Do you have the correct antenna selected on the K3? ANT1/ANT2, etc.? Grant NQ5T > On Apr 13, 2020, at 1:02 PM, Chris Pinholster via Elecraft > wrote: > > I recently moved and set up the same temporary Butternut vertical as I used > in my previous restricted HOA location. (When this virus stu

Re: [Elecraft] K3 High SWR

If you want to build a dummy load, I recommend the Oak Hills Research RFL-100 kit for $50 (http://www.ohr.com/rfl100.htm). I took pictures while I was building mine. You can see those in this blog post. https://observer.wunderwood.org/2016/12/31/building-a-dummy-load/ wunder Walter Underwood wu

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

Motorcycles From: elecraft-boun...@mailman.qth.net on behalf of Keith Trinity WE6R Sent: Monday, April 6, 2020 4:32 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only Could be a burned trap on the KAT3 (most

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

Could be a burned trap on the KAT3 (most likely). Just jumper the coil, L10 and it will bypass a burned capacitor. The trap was found to be redundant. Make sure 6m is on the correct antenna not 2. In TUNE, does it really have High SWR? Set ATU to BYP for any tests using dummy load. Make sure TE

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

Thankyou. I'll check those. Chuck KE9UW c-haw...@illinois.edu Sent from my iPad > On Apr 6, 2020, at 2:43 PM, Howard Stephenson wrote: > > Try CONFIG TXGN > It's listed in the manual under the CONFIG Menu > > values can be > If you are having issues with TX Gain on 6M only check the IF t

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

Try CONFIG TXGN It's listed in the manual under the CONFIG Menu 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: http://www.qsl.net/donate.htm

Re: [Elecraft] K3 Settings for SignaLink USB

Many thanks to all of those who took the time and trouble to answer. I took the SignaLink apart and re-seated the module. I also re-checked my ALC setting and all the others on the rig. I had come across a very useful document by Jason K8ZT and followed his instructions to the letter. I a

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

Other than using a computer, is there a menu item where the tx calibration values can be seen? Tha manuals are pretty much assuming that you have a computer and still have the one that you did the calibration on. Chuck Jack Hawley KE9UW Sent from my iPhone, cjack > On Apr 5, 2020, at 7:24

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

Jim, If I am not mistaken, if the K3 Utility TX Gain calibration fails on any band, no calibration information is stored in the K3. If you do it manually, it will save on a band by band basis. 73, Don W3FPR On 4/2/2020 9:12 AM, Jim Spears wrote: I am helping a friend upgrade an older K3/10

Re: [Elecraft] K3 Settings for SignaLink USB

You have the Signalink w/the module or the one w/jumpers? Several of my friends have had trouble w/the Signalink w/the module, I have two Signalinks, both w/jumpers and don’t have any issues. 73 de Jose Douglas KB1TCD Sent from my iPad > On Apr 4, 2020, at 4:21 AM, David Bondy wrote: > > I

Re: [Elecraft] K3 Settings for SignaLink USB

David, I think you should check the jumpers in the SignaLink. Also make certain the level controls for the SL soundcard are set correctly in the computer. Or simply use another USB soundcard - the K33 has built-in isolation transformers. Set the K3 LIN OUT level to about 10. You apparently

Re: [Elecraft] K3 Settings for SignaLink USB

I ask “why use a SignaLink with the K3?” The K3 already has buffered Lin In and Line Out. Separate settings for in/out for each mode. The one item to pay attention to is transmit audio level. You should set the power out by using the Per knob on the K3 front panel. Then adjust the audio to

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

I perform "radio maintenance" about every 2nd month or so. That includes check frequency {adjust REF CAL as necessary}, check power output on all bands {run TX Gain Cal as necessary}, receiver sensitivity {run RX Gain cal as necessary} and then perform a full back up of the configuration data.

Re: [Elecraft] K3 - NOT K3S - issue: TX Calibration fails on 6m only

I had the same issue with a brand new K3S. It failed a couple times and then it passed once...so I left it there. I have not been on 6M but I assume it will work fine. I do feel apprehensive though about running the cal again. Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW aka Jack,

Re: [Elecraft] K3 SSB filters

You said: "In addition, when the DSP IF filters are set to about the same width as the roofing filters, the two filters "cascade" -- the rejection of adjacent signals is the sum of the rejection of the two filters. " There is no requirement that the widths be about the same. They could be widel

Re: [Elecraft] K3 SSB filters

On 4/1/2020 7:17 AM, Wes wrote: Until you get down to the noise floor isn't it always the sum (in dB) of the rejection? Isn't that what I said? Perhaps I said it badly. 73, Jim __ Elecraft mailing list Home: http://mailman.qth.net/mai

Re: [Elecraft] K3 SSB filters

Until you get down to the noise floor isn't it always the sum (in dB) of the rejection? Wes  N7WS On 3/31/2020 8:52 PM, Jim Brown wrote: On 3/31/2020 8:36 PM, Don Wilhelm wrote: What the roofing filters will do is keep the receiver from reducing the hardware AGC for stations which are within

Re: [Elecraft] K3 SSB Filters

: elecraft-boun...@mailman.qth.net On Behalf Of j...@kk9a.com Sent: Wednesday, April 1, 2020 7:30 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 SSB Filters I concur. I have 2.8, 2.1 and 1.8 KHz 8 pole roofing filters in my K3S. I made over 8500 SSB QSOs last month and I used the 2.1 KHz

Re: [Elecraft] K3 SSB Filters

I concur. I have 2.8, 2.1 and 1.8 KHz 8 pole roofing filters in my K3S. I made over 8500 SSB QSOs last month and I used the 2.1 KHz roofing filter for all of them. John KK9A Jim Brown K9YC wrote: I tried that and didn't like the result. I prefer 2.1 kHz 8 pole 73, Jim K9YC ___

Re: [Elecraft] K3 SSB filters

No, the roofing filters aren't superfluous even with lower level signals.  If you set the bandwidths similarly as I do all of the time, the rejection of the filter adds to the rejection from the DSP.  I think this should be pretty obvious. Dave   AB7E On 3/31/2020 8:36 PM, Don Wilhelm wro

Re: [Elecraft] K3 SSB filters

On 3/31/2020 8:36 PM, Don Wilhelm wrote: What the roofing filters will do is keep the receiver from reducing the hardware AGC for stations which are within the roofing filter passband. In addition, when the DSP IF filters are set to about the same width as the roofing filters, the two filters

Re: [Elecraft] K3 SSB filters

Hopefully that we will remember that the DSP filter skirts are steeper than the crystal filter skirts, so judicious use of the HiCut and LoCut will provide us with a better passband than narrow roofing filters. What the roofing filters will do is keep the receiver from reducing the hardware AG

Re: [Elecraft] K3 SSB filters

Remember, different brands of 2.1 or 1.8 filters are not necessarily equal. One must realize the shape factor is more important than the published BW. Just because one radio filter is 1.8 kHz does not mean another 1.8 kHz BW is the same. Bob, K4TAX Sent from my iPhone > On Mar 31, 2020, a

Re: [Elecraft] K3 on SSB

Al, How about sharing your settings? -de John NI0K Al Lorona wrote on 3/31/2020 1:47 PM: Jack beat me to the comment I was going to make. Far be it from me to contradict a seasoned contester like W3LPL, nor to dismiss the comments of many others, but I wonder how many "the K3 sounds bad on S

Re: [Elecraft] K3 SSB filters

I typically use Hi Cut the most, Lo Cut once in a while and almost never use Width in SSB mode. For me the 2.1 kHz filter works swell in this application. In the late '90s I bought a TS-850s which was fitted with a 1.8 kHz factory accessory filter. I couldn't get rid of it fast enough and outfit

Re: [Elecraft] K3 SSB Filters

Having the 1.8 kHz in my K3S, I know what and how it works. I work 2 SSB traffic LSB nets which both have LSB nets which are 2 kHZ above my net frequency. That means at least 700 Hz to 1000 Hz of their primary signal is in my receiver passband. The 1.8 kHz filter, the DSP at 1.8 kHz and us

Re: [Elecraft] K3 SSB Filters

On 3/31/2020 3:18 PM, Buck wrote: Why go halfway?  I would go with the 1.8 as a roofing filter. I tried that and didn't like the result. I prefer 2.1 kHz 8 pole 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailma

Re: [Elecraft] K3 SSB Filters

Why go halfway? I would go with the 1.8 as a roofing filter. Crank the DSP down to 1.6 and slew the passband to get the best readability. Buck, k4ia Honor Roll 8BDXCC EasyWayHamBooks.com On 3/31/2020 12:17 PM, John Simmons wrote: David, I'm looking to upgrade my filters for SSB. I have the

Re: [Elecraft] K3 on SSB

Jack beat me to the comment I was going to make. Far be it from me to contradict a seasoned contester like W3LPL, nor to dismiss the comments of many others, but I wonder how many "the K3 sounds bad on SSB" comments occur because of operator error in setting the AGC and gain controls improperly?

Re: [Elecraft] K3 on SSB

I believe what Frank is referring to is not Tx audio, but receive audio during times of very heavy band loading, which pretty much occurs only in busy contests such as CQ WPX SSB last weekend. During these times stations are basically on top of each other or very closely spaced. We tend to hear

Re: [Elecraft] K3 SSB Filters

David, I'm looking to upgrade my filters for SSB. I have the 2.8 filter installed, which has steeper skirts than the 2.7. I'm wondering if the 2.1 would have a noticeable enough effect to justify the cost. -de John NI0K David Smith wrote on 3/31/2020 10:26 AM: Been interesting reading the c

Re: [Elecraft] K3 shift-width/lo-hi

The K3 Utility help explains what gets EE INIT-ed. Glad it is working. Keith WE6R, Elecraft K3 Tech On Mon, Mar 30, 2020 at 8:47 PM Martin Sole wrote: > Keith, > > Many thanks for the heads up. I did the gain calibration instinctively as > I did not know if it would be modified by the EE-Init o

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