[Elecraft] K3EXREF board

I'm looking for an unbuilt K3EXREF kit.  Does anyone have one squirreled away? Respond to me direct. I am on the "would-like-to-have" list at Elecraft. thanks 73 charlie, k1xx __ Elecraft mailing list Home:

Re: [Elecraft] K3EXREF issue? K3 - Resolved

Folks, FYI, there is a resolution to the issue. A history in short: I started having issues of localized frequency changes. I discovered REF CAL would only lock on a 10MHz source if the source was cold and then only after I rebooted the K3. I tried two different sources with the same

Re: [Elecraft] K3EXREF issue? K3

The issue seems to be within the K3, likely the K3EXREF board? I just tried a different GPSDO for the 10MHz reference, a Trimble Thunderbolt. When I first connected the Thunderbolt I did get a rapid flashing asterisk. Satisfied I went on to use the K3. On a hunch I went back to REF CAL and

Re: [Elecraft] K3EXREF issue? K3

Ed, Thanks for the reply. I do need an oscilloscope. The only frequency counter at this QTH is this K3, my K3s is at the factory for an issue with SSB. That said, there does appear to be a 10MHz signal coming from the GPSDO. There's enough bleed-through that when I tune to 10MHz I can

Re: [Elecraft] K3EXREF issue? K3

Gary, Well first thing I would check is whether 10-MHz is present at the K3 EXREF sma jack. If you have a freq counter check for correct freq. No counter then use a radio that can tune 10-MHz for presence of signal on correct freq. Check for adequate reference level (I run 10mw which is

[Elecraft] K3EXREF issue? K3

I noticed CW stations were a bit off from the P3 and thought I needed to re-calibrate the P3 again. I did so and still encountered issues. I have the K3EXREF installed and it has been working fine for some time now with the GPSDO 10 MHz source. On a hunch I looked at the K3 REF CAL results

Re: [Elecraft] K3EXREF question

Elecraft recently posted a modification to the K3REF to correct a problem caused by the K3EXREF. Though specific to frequency changes noticeable on on 2M and 6M, I suspect it may directly relate to this discussion. http://www.elecraft.com/K3/mods/K3EXREF%20freq%20shift%20fix.pdf --- Chuck, AE4CW

Re: [Elecraft] K3EXREF question

Almost. The TCXO has no control input and is not tuned; it is only measured. The measurement information is passed to the radio's MCU which then uses the data to determine the correct value to command the synthesizer(s), drive the REF CAL display, and so forth. 73, Lyle KK7P The K3EXREF

[Elecraft] K3EXREF question

Thanks guys for the detailed and thorough replies - I understand it now!! Andy G4HUE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] K3EXREF question

The K3EXREF circuit is essentially a AFC (sort of) where a highly accurate 10-MHz reference is used to measure the frequency of the TCXO and send a frequency correction "word" to control the TCXO so that the error from 49.380 MHz is removed. As I understand it this comparison is done about

Re: [Elecraft] K3EXREF question

I believe that is the way it is. 53/1000 of a hertz over an hour? I'd give that up all day everyday for the spectacular lack of phase noise in the K3s or K3 with the new synth. It's not a cesium clock. On 3/7/2016 8:02 AM, David Anderson wrote: I -think- the way it works is that when the

Re: [Elecraft] K3EXREF question

I -think- the way it works is that when the K3EXREF is locked with the external frequency standard on 10 MHz, this is used to measure the frequency of the TCXO. The value of that frequency measurement is then put into the K3 REFCAL setting. If the TCXO drifts slightly as they all will, then the

Re: [Elecraft] K3EXREF question

Andy - Without the K3EXREF connected, the REF CAL frequency will be fixed and the K3 will drift, albeit very slightly, particularly when it is first switched on. With K3EXREF locked with your 10MHz standard the REF CAL frequency will vary to correct any drift in the K3. If you measure the output

Re: [Elecraft] K3EXREF question

Hi Andy, I have the same (hardware) constellation and get similar results. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3EXREF-question-tp7614973p7614974.html Sent from the Elecraft mailing list archive at Nabble.com.

[Elecraft] K3EXREF question

Sometime ago I installed the K3EXREF which I feed from an external 10MHz double oven Xtal oscillator. I am confident the K3EXREF is installed and configured correctly as when in use and the external oscillator is connected the front panel says REF*CAL with the * blinking. Attempting to change

[Elecraft] K3EXREF question

Sometime ago I installed the K3EXREF which I feed from an external 10MHz double oven Xtal oscillator. I am confident the K3EXREF is installed and configured correctly as when in use and the external oscillator is connected the front panel says REF*CAL with the * blinking. Attempting to change

Re: [Elecraft] K3EXREF - What am I doing wrong

Hi Tighe: Tnx for the info. Once we get spring or summer I will move my active antenna up higher so it can get a pretty good shot of the sky. If I had left the antenna where it was it would be under snow by now. I was amazed how fast the unit locked onto Satellites and it worked like a charm.

Re: [Elecraft] K3EXREF - What am I doing wrong

Mike, I'm planning to leave it on continuously although I did tap "1" to save the setting at what my final fully warmed up state should be. I bought an active GPS antenna which I have sitting in a windowsill and it seems to have a good GPS lock. I have to try pretty hard to get it to loose

Re: [Elecraft] K3EXREF - What am I doing wrong

Wow! Great tip -- totally forgot the "tap" "2" step. My EXREF had quit some time ago and checking 10-MHz sources all tested good so I figured my "beta test" unit had given it up. Too busy to investigate further. It stopped after I had a firmware glitch so now guessing that shut off the

Re: [Elecraft] K3EXREF - What am I doing wrong

Tighe: Glad you got it working. Mine also works like a charm. I did the calibration on both my K3's and then since I had the GPS Antenna on a stick shoved into the snowbank, I made it a temp setup. Question, are you leaving the Calibration on all the time or just use it once in a while. I am

Re: [Elecraft] K3EXREF - What am I doing wrong

Thanks to everyone that responded. I looked at that errata several times and for some reason had blinders on to the big obvious section in the middle of the page which deals with enabling the module. That's what I get for working on it in the middle of the night. All good now. 73, Tighe

Re: [Elecraft] K3EXREF - What am I doing wrong

Yes, you could be missing something, Tighe. There is an addendum to Page 4 which reads: After installing the K3EXREF module, you must enable it in the K3 menu before it can be used if your K3 is equipped with MCU firmware 4.57 or later. Enable the K3EXREF module as follows: * Turn the K3 on.

Re: [Elecraft] K3EXREF - What am I doing wrong

Have you gone to Config: Ref Cal and tapped 2 to enable XREF IN ? See page 63 of the manual. 73 from David GM4JJJ > On 28 Feb 2016, at 05:31, Tighe Kuykendall wrote: > > I picked up the Leo Bodnar frequency reference and a K3EXREF board after > reading a couple of threads

[Elecraft] K3EXREF - What am I doing wrong

I picked up the Leo Bodnar frequency reference and a K3EXREF board after reading a couple of threads here. I Installed the board according to instructions, took static precautions, am using a known good cable from the K3 to said reference. I can clearly hear the 10MHz tone on my K3 when I

Re: [Elecraft] K3EXREF Ext. Frequency Reference Input

Hi Wes: Actually for what it is worth, the board inside are Trimble Boards with a Trimble oven. I have also corresponded with Leo on his 2 GPSDO units. I like the fact that he says I will have no problem using the unit with both of my K3's. Tnx Wes 73 De Mike VE3YF http://www.ve3yf.com

Re: [Elecraft] K3EXREF Ext. Frequency Reference Input

Hi Chuck: I tired sending you an email direct, but it bounced for some reason.  Yes I am now aware of the product from Force-12, actually it comes from Leo Bodnar in the U.K. Very nice unit and probably the way to go. Tnx. 73 De Mike VE3YF http://www.ve3yf.com [http://www.ve3yf.com/]

Re: [Elecraft] K3EXREF Ext. Frequency Reference Input

Speaking of using a GPSDO, I have a quick question... I use a program called SBSpectrum, it shows frequency changes less than one Hz. I note that the K3, does frequency correction in small sawtooth steps of about 1/4 to 1 Hz, across a few seconds of time, repeatedly... It is as if some

Re: [Elecraft] K3EXREF Ext. Frequency Reference Input

-Original Message- From: Mike VE3YF [mailto:m...@ve3yf.com] Sent: Sunday, December 20, 2015 01:43 To: elecraft@mailman.qth.net Subject: [Elecraft] K3EXREF Ext. Frequency Reference Input Hi: Has anyone used or had experience using the K3EXREF with this item as the 10Mhz source: Trimble GPS

Re: [Elecraft] K3EXREF Ext. Frequency Reference Input

No experience with that model but much information is available on line. I bought the BG7TBL version and a distribution amplifier. The Lady Heather software said it was accurate over several days to the 12th power...way beyond what I need. I use the output for my HP frequency counter and

Re: [Elecraft] K3EXREF Ext. Frequency Reference Input

No experience with any of them here (yet). Looks like a Chinese knockoff with the Trimble name on it. Might be perfectly okay but I wouldn't buy it for that reason. I've looked into buying, put haven't pulled the trigger yet*, one of these:

[Elecraft] K3EXREF Ext. Frequency Reference Input

Hi: Has anyone used or had experience using the K3EXREF with this item as the 10Mhz source: Trimble GPS Receiver GPSDO 10MHz 1PPS GPS Disciplined Clock with RS232 Port

[Elecraft] K3EXREF Ext. Frequency Reference Input

Hi, Anyone got one of external reference boards (K3EXREF) that is no longer required? If so, let me know how much and approximate shipping cost to UK. Thanks, Peter G4URT __ Elecraft mailing list Home:

[Elecraft] K3EXREF upgrade

With all of this talk of synthesizer upgrades, if you are considering adding a K3EXREF while your K3 is open, this is a shameless plug for a very nice Trimble Thunderbolt 10 MHz precision source plug-and-play appliance that I have posted on QTH. Thank you. 73, geo - n4ua

[Elecraft] K3EXREF problem

I just installed the K3EXREF option and followed the step-by-step instructions. I'm feeding it with a +10dbm level from my HP Z3801 disciplined, 10MHz reference. The K3 doesn't appear to be locked. The Installation and Operation manual says that LOCKED will appear if you try to adjust the VFO

Re: [Elecraft] K3EXREF Query

Don't you guys have anything better to do than nit pick over a negligible warm up drift. I don't think that you will be planning to do any ARRL Frequency Measurement Tests, within the first 10 minutes of your K3 turn on ! I have bought several 10 MHz DOUBLE Oven Controlled Crystal

Re: [Elecraft] K3EXREF Query

is a thermostatically controlled heating device. Nuff sed! :-) 73, Alan. G4GNX -Original Message- From: Edward R Cole Sent: Tuesday, October 14, 2014 10:47 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF Query David, 10w is 7.3 kwH/month. I would doubt that is a large expense

Re: [Elecraft] K3EXREF Query

a GPSDO and plan to leave it on all the time. As for the expenseto me the expense is minimal. From: Mike Harris mike.har...@horizon.co.fk To: elecraft@mailman.qth.net Sent: Tuesday, October 14, 2014 10:35 AM Subject: Re: [Elecraft] K3EXREF Query Why not just leave the frequency

Re: [Elecraft] K3EXREF Query

: [Elecraft] K3EXREF Query Message-ID: 543d9e2c.9000...@coldrockshotbrooms.com Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 10/14/2014 2:47 PM, Edward R Cole wrote: Leave your TV plugged in but turned off and it still consumes about 50w. You need to buy a new TV. The new ones are under

Re: [Elecraft] K3EXREF Query

Ed, I spent a lot of time over the past few years looking at this exact problem. It becomes interesting if your power company charges tiered rates and baseline is under a dime, while 300% and over is nearly $0.50. The government's EnergyStar program did not initially look at standby power,

Re: [Elecraft] K3EXREF Query

switchers are used instead of the heavy wall wort linear supplies. You thought it was to save weight? 73 Fred, AE6QL -Original Message- From: Edward R Cole kl...@acsalaska.net Sent: Oct 15, 2014 9:29 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF Query Lynn

Re: [Elecraft] K3EXREF Query

an hour or so and want to check the calibration. 73 Geoff G3UCK -Original Message- From: Edward R Cole Sent: Tuesday, October 14, 2014 10:47 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF Query David, 10w is 7.3 kwH/month. I would doubt that is a large expense, even

Re: [Elecraft] K3EXREF Query

Maybe my concept is wrong but I do not see the need to leave a GPSDO on. Once the GPSDO locks to the satellite it is all that is required. I have decent sky view and it locks up using multiple satellites quite quickly. So before the K3 has warmed up the GPSDO has locked and I'm locked to it.

Re: [Elecraft] K3EXREF Query

I have not seen any replies to this, Brian. As I see it, the only way out is to go into REF CAL from the Config menu and then press 2 to disable XREF until the frequency standard has locked. Like you, I have found that if XREF is enabled when the K3 is switched on, the K3 drifts unacceptably for

Re: [Elecraft] K3EXREF Query

Why not just leave the frequency reference switched on. OK with a TCXO, not so good with a Rubidium standard. Power consumption must be trivial compared with the normal domestic base load. Regards, Mike VP8NO On 14/10/2014 10:41, David G4DMP wrote: I have not seen any replies to this,

Re: [Elecraft] K3EXREF Query

About 10W for the MV89A double oven CXO, when run from a linear 12V power supply. NOT trivial at today's prices for electricity in Great Britain. 73 de David G4DMP In a recent message, Mike Harris mike.har...@horizon.co.fk writes Why not just leave the frequency reference switched on. OK with a

Re: [Elecraft] K3EXREF Query

for routine frequency checks. The rb is only +/- 5 E-11 so not as good as GPS but good enough for my use. 73, Ed - KL7UW - From: David G4DMP da...@g4dmp.fsnet.co.uk To: Mike Harris mike.har...@horizon.co.fk Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF Query Message-ID

Re: [Elecraft] K3EXREF Query

On 10/14/2014 2:47 PM, Edward R Cole wrote: Leave your TV plugged in but turned off and it still consumes about 50w. You need to buy a new TV. The new ones are under a half-watt when plugged in but turned off. __ Elecraft mailing

Re: [Elecraft] K3EXREF Query

by a stable crystal oscillator is a thermostatically controlled heating device. Nuff sed! :-) 73, Alan. G4GNX -Original Message- From: Edward R Cole Sent: Tuesday, October 14, 2014 10:47 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF Query David, 10w is 7.3 kwH/month. I

[Elecraft] K3EXREF Query

I was wondering if there is any kind of sensibility check done on the input reference? For example, I've been fooling around with a double oven controlled XO. Starting from cold it is 200Hz off. It takes ten minutes or so to be within 10 Hz. It gets into the tenths of Hz accuracy region in

[Elecraft] K3EXREF and NavSync CW12-TIM GPS Module

This is an inquiry I sent to Elecraft, along with their response: I’ve been considering adding the K3XREF to my K3. Can you tell me if the device listed in this link is a suitable 10MHz source? (Re: Navsync CW12-TIM GPS Timing Module. Price and technical details at the link:)

Re: [Elecraft] K3EXREF and NavSync CW12-TIM GPS Module

If Howard is correct on the output level, it's a little low for the K3EXREF's input. From the manual: Connect the external 10 MHz signal source to the K3 rear panel REF. connector. The 10 MHz source should have a signal level between +4 dBm and +16 dBm, nominal. For square wave sources, 2VDC to

Re: [Elecraft] K3EXREF and NavSync CW12-TIM GPS Module

Small correction below. On Wed, 08 Jan 2014 08:21:37 -0800, you wrote: If Howard is correct on the output level, it's a little low for the K3EXREF's input. From the manual: Quote Connect the external 10 MHz signal source to the K3 rear panel REF. connector. The 10 MHz source should have a

Re: [Elecraft] K3EXREF and NavSync CW12-TIM GPS Module

I was one of the beta testers on the K3EXREF. I am using a surplus OCXO bought for about $45 on e-bay. Its output was a distorted sinewave (appears to have strong second harmonic). I removed the harmonic by running the 10-MHz thru a DEMI model 10-4 distribution amp that uses 10-MHz bandpass

Re: [Elecraft] K3EXREF query

The most useful tool, which I have found for this type of application, is the simple screw Grabber. Not only can this tool be used to hold a screw and washer(s) while starting the thread, but also while removing a screw and washers. It can also be used to retrieve bits of wire, screws,

Re: [Elecraft] K3EXREF query

I've used a little bit of coax seal too many times to count. Stick a bit in the screwdriver tip and it will hold the screw very well.Used t recently re-building a T-8 Tennadyne Log Periodic with lots of difficult to access areas. Didn't drop a one (and they would have gone into the boom and been

Re: [Elecraft] K3EXREF query

[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Geoffrey Mackenzie-Kennedy Sent: Sunday, July 21, 2013 8:53 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF query The most useful tool, which I have found for this type of application, is the simple screw Grabber. Not only can this tool

Re: [Elecraft] K3EXREF query

Thanks guys for the suggestions. To appreciate the problem one needs to look at Fig's 7 and 9 in the K3EXREF manual. There is no room for tools. Nor do I think any kind of gop is a good idea. (Though if this screw were necessary for grounding I don't think they would have used a split

Re: [Elecraft] K3EXREF query

 Upon further reading, the corrections of this module appear to be in  ~1Hz steps.   I was more interested in something that disciplines the oscillator in a finer more continuous way. I have a K3EXREF on order from Aptos, as well as a Trimble Thunderbolt coming via E-Bay. The Trimble

[Elecraft] K3EXREF query

Anybody install with with the subrx in place? My recollection is that the installing the screw with the lockwasher on the panel side of the master oscillator PCB was a bit tricky. Also the extra hole for the SMA connector is already in use here for something else. I'm wondering if there is

Re: [Elecraft] K3EXREF query

connector opening. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian Alsop Sent: Saturday, July 20, 2013 8:42 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K3EXREF query Anybody install with with the subrx

Re: [Elecraft] K3EXREF query

-Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian Alsop Sent: Saturday, July 20, 2013 8:42 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K3EXREF query Anybody install with with the subrx in place? My recollection

[Elecraft] K3EXREF Experience

Hi Group, I wanted to post my experience with the addition of the K3EXREF in my K3. First off, took me around 30 minutes to install, everything went smooth. Very nice addition to my K3! I run a OCXO 10 MHz reference into the module and working just as I hoped it would. When turning the radio

[Elecraft] K3EXREF

I just installed the K3EXREF and now I get the error message on boot up that says ERR PL1 What Have I done wrong? Chas - M0BIN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] K3EXREF

...@mailman.qth.net] On Behalf Of chas Sent: Thursday, December 13, 2012 9:12 AM To: Elecraft Reflector Subject: [Elecraft] K3EXREF I just installed the K3EXREF and now I get the error message on boot up that says ERR PL1 What Have I done wrong? Chas - M0BIN

Re: [Elecraft] k3exref dependencies?

You do not need the TCXO in order to have the external reference. I've got my radio setup in this manner. ~Brett (N7MG) On Mon, Oct 22, 2012 at 10:41 AM, John D'Ausilio jdausi...@gmail.comwrote: Do I need k3tcxo3 to be able to use k3exref? Either I'll have a good 10MHz source, or I won't be

[Elecraft] K3EXREF install in K3 build?

I'm building my second K3 with the K3EXREF option and I wonder if anyone can tell me if it would be a problem to install the K3EXREF during initial construction, at the same time as the KREF3. Would it affect initial testing and/or calibration? Thanks, - 73, Stan - KR7C -- View this

Re: [Elecraft] K3EXREF install in K3 build?

If the K3EXREF is left unconnected to an external frequency reference, it should not affect any calibrations. If it is connected to a ref oscillator, it would affect your reference freq calibration - in that you wouldn't really need to do it at all. I would go without it until you get the basic

Re: [Elecraft] K3EXREF install in K3 build?

Matt Zilmer wrote I would go without it until you get the basic radio together, just the same. Should not isn't that same as won't. Good advice. Since I will be installing the KRX3 and KPA3 after basic testing and calibration anyway, I'll be prudent and install the K3EXREF then. Thanks for

[Elecraft] K3EXREF with HP Z3816A GPS Receiver

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

[Elecraft] K3EXREF with HP 3816A GPS Receiver

The 3816 has been sold. Thanks. Bill, WA4KBD If anyone on the lis is interested in purchasing my HP Z3816A GPS receiver for use with K3EXREF and/or as a lab standard, I have all the details posted on my website at: __ Elecraft

[Elecraft] K3EXREF with HP Z3816A GPS receiver

The text of my last post apparently didn't make it to the reflector, so I'm trying again. If anyone on the list is interested in purchasing my HP Z3816A GPS receiver for use with K3EXREF and/or as a lab standard, I have all the details posted on my website at: www dot wa4kbd dot net/HP3816A

Re: [Elecraft] K3EXREF/K144RFLK Shipping Date?

That's great, Dave, my K3EXREF and K144RFLK work well too. However, my understanding is that the K3 firmware does not currently contain a method to automatically update the XVn transverter offset values as REFCAL adjusts with the external 10 MHz reference. That is what I was told in March and I

Re: [Elecraft] K3EXREF/K144RFLK Shipping Date?

...@g4fre.com] Sent: Friday, May 27, 2011 6:06 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3EXREF Shipping Date? I also got the same reply from Vicki at elecraft on 5/17 that it would be shipped next week ie the week now ending. Having not received the despatch notice I called her 2

Re: [Elecraft] K3EXREF

I am still unable to reproduce the anomaly here, Brett, Igor and others. I am using the latest firmware and have tried both sinusoidal and TTL reference inputs. 73 de David G4DMP In a recent message, Brett Howard br...@livecomputers.com wrote ... This was a known bug that was found in field

Re: [Elecraft] K3EXREF

David, The exact conditions the anomaly occurs under are: Tech mode ON, external reference 10 MHz signal connected and operating, go to MENU CONFIG, REF CAL (only available with tech mode on) and watch for the blinking asterisk. If it is NOT blinking, the problem won't appear. While the

Re: [Elecraft] K3EXREF

Thank you, Jim, and yes, I can confirm that I am getting the phenomenon. I can't say that I had come across the problem previously. In fact it's quite a useful feature in that it reinforces the fact that the K3 is locked even when looking at other Config Tech settings. In some ways, I hope that

[Elecraft] K3EXREF

Tracking number I got from Lisa says it is supposed to be here today. Mail man should be here in a few minutes, so, following the instructions in the downloadable manual, I have the K3 opened up and ready to do the install. The hardest part of the whole thing will be re-installing that split

Re: [Elecraft] K3EXREF

I am unable to reproduce the anomaly here, Jim. I have checked ALARM, MIC+LIN and ANTIVOX and all the characters are perfectly steady. [Firmware: 4.36, DSP 2.14, FL 1.14] 73 de David G4DMP In a recent message, Jim Sheldon w...@cox.net writes I did notice one anomaly. Once the * symbol started

Re: [Elecraft] K3EXREF

Brendan also caught this... matt On Tue, 31 May 2011 19:19:20 +0100, you wrote: I am unable to reproduce the anomaly here, Jim. I have checked ALARM, MIC+LIN and ANTIVOX and all the characters are perfectly steady. [Firmware: 4.36, DSP 2.14, FL 1.14] 73 de David G4DMP In a recent message,

Re: [Elecraft] K3EXREF

- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Sheldon Sent: Tuesday, May 31, 2011 12:57 PM To: Elecraft Mailing List Subject: [Elecraft] K3EXREF Tracking number I got from Lisa says it is supposed to be here today. Mail man should be here

Re: [Elecraft] K3EXREF

Sent: Tuesday, May 31, 2011 12:57 PM To: Elecraft Mailing List Subject: [Elecraft] K3EXREF Tracking number I got from Lisa says it is supposed to be here today.  Mail man should be here in a few minutes, so, following the instructions in the downloadable manual, I have the K3 opened up

Re: [Elecraft] K3EXREF Shipping Date?

I picked mine up at Dayton. I am looking forward to testing it. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3EXREF-Shipping-Date-tp6407590p6417570.html Sent from the Elecraft mailing list archive at Nabble.com.

Re: [Elecraft] K3EXREF Shipping Date?

-- Message: 3 Date: Thu, 26 May 2011 09:26:28 -0700 From: Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com Subject: Re: [Elecraft] K3EXREF Shipping Date? To: Jim Sheldon w...@cox.net Cc: Elecraft Mailing List elecraft@mailman.qth.net Message-ID: 4dde7f34.10...@elecraft.com

Re: [Elecraft] K3EXREF Shipping Date?

-- Message: 3 Date: Thu, 26 May 2011 09:26:28 -0700 From: Eric Swartz - WA6HHQ, Elecraft [hidden email] Subject: Re: [Elecraft] K3EXREF Shipping Date? To: Jim Sheldon [hidden email] Cc: Elecraft Mailing List [hidden email] Message-ID: [hidden email] Content-Type: text/plain; charset=ISO-8859-1

[Elecraft] K3EXREF Shipping Date?

The ship date on the external reference board ought to be getting close. I've already ordered mine, just wondering how much longer till they are out the door? Jim - W0EB __ Elecraft mailing list Home:

Re: [Elecraft] K3EXREF Shipping Date?

Its been shipping for a week or two. 73, Eric On 5/26/2011 9:03 AM, Jim Sheldon wrote: The ship date on the external reference board ought to be getting close. I've already ordered mine, just wondering how much longer till they are out the door? Jim - W0EB

Re: [Elecraft] K3EXREF Shipping Date?

I ordered one early last week (as part of another order) and was told by sales they would not be ready for shipment until this week. I have not yet received the order, or a shipment notice. I'm sure it will be along, just wanted to mention what I was told about the external reference kit

Re: [Elecraft] K3EXREF Shipping Date?

My arrived a few days ago. So they are being shipped. Sent from my iPhone On May 26, 2011, at 11:49 AM, bruce.bef...@myfairpoint.net wrote: I ordered one early last week (as part of another order) and was told by sales they would not be ready for shipment until this week. I have not yet

Re: [Elecraft] K3EXREF Shipping Date?

I have found that the best way to make enquiries about orders from Elecraft is to call or email Elecraft. 73, Tom Amateur Radio Operator N5GE On Thu, 26 May 2011 12:49:43 -0400, bruce.bef...@myfairpoint.net wrote: I ordered one early last week (as part of another order) and was told by sales

[Elecraft] K3EXREF 10 MHz Ref Input on order form

The K3EXREF 10 MHz Reference Input for the K3 is now up on the order form at: http://www.elecraft.com/elecraft_prod_list.htm#exref This also includes a link to the manual. 73, Eric WA6HHQ -- http://www.elecraft.com __ Elecraft

[Elecraft] K3EXREF

I thought the K3EXREF would be up on the website this week, anyone out there got any updated info? Thank you in advance. K6CG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] K3EXREF UPDATE

Is there any word out there in Elecraft land as to when the K3EXREF will be available? Thanks. K6CG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] K3EXREF UPDATE

Approximately 2-3 weeks. Its in production right now. I'll have it up on the web site for ordering within a week. 73, Eric On 4/26/2011 10:32 AM, Richard Thorpe wrote: Is there any word out there in Elecraft land as to when the K3EXREF will be available? Thanks. K6CG

[Elecraft] K3EXREF Questions

1. Will the K3EXREF work straight from the output of an Efratom LPRO-101 or does it need a TTL square wave output or something else requiring extra circuitry between the LPRO and the K3? 2. If the K3EXREF is installed, will the K3 still work as normal if the frequency standard is not turned on?

Re: [Elecraft] K3EXREF Questions

1. Will the K3EXREF work straight from the output of an Efratom LPRO-101 or does it need a TTL square wave output or something else requiring extra circuitry between the LPRO and the K3? A 10 MHz sine wave output from the Efratom is fine (+4 dBm to +16 dBm). 2. If the K3EXREF is installed,

Re: [Elecraft] K3EXREF Questions

On Sat, 16 Apr 2011 07:07:25 -0700 (PDT), you wrote: The K3EXREF will use either a sine wave input at 4 to 16 dBm (2 to 3.3V), or a TTL signal. The manual advises using a 50 ohm series resistor for 5V TTL to drop the voltage level into the proper range. 1. Will the K3EXREF work straight from the

[Elecraft] K3EXREF

Now I'm just waiting for Elecraft to get the K3EXREF board in production to the point they are available. I have obtained a Trimble Thunderbolt, a Larsen marine GPS (read white mushroom) antenna and have ordered a 3 voltage power supply for the Trimble. Right now I have it running on a pair

Re: [Elecraft] K3EXREF

The K3 connector is an SMA. Almost all of the Trimble units came with a splitter, because E911 required two 10 MHz references to function. Unless you need two sources yourself, I'd go direct from the Tbolt to the K3 without the splitter, but it really doesn't matter. You'll have plenty of 10 MHz

Re: [Elecraft] K3EXREF Questions

I can answer 2, Julian. It is yes. If there is no external 10 MHz signal, the K3 reference oscillator reverts to its normal operation. An asterisk (splat, whatever one wants to call it) appears on the LCD when there's an external signal detected, so you know at a glance whether the K3 is being

Re: [Elecraft] K3EXREF

I can make or obtain an SMA-SMA cable or if the K3EXREF input is a BNC, cables are already on hand for that. The kit includes an SMA panel jack with completed ends. A SMA-to-BNC between-series adapter is included. I found a piece of RG-316 (RG-174 but with a Teflon jacket) with a male SMA

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