Re: [Elecraft] KREF3 External Reference card
Hi Someone pointed out that we all have different 49 MHz oscillators. I guess that many K3 owners have TCXO and thus no input for the voltage control i.e. VCXO. This pin is indicated in the KREF3 shematic as pin 1 (VCTRL) of Z1. My KTCXO3-1 did not have this pin and could not be used vith the reference PLL so I had to replace it with a VCXO. *The design of the PLL is fairly simple and can be built on a small board plugging directly into J4. *One has to consider the resulting phase noise and spurs of the locked KREF3. *The Kref 3 must also fall back into a default mode when the extref is removed or if the PLL unlocks. I wonder if the promised optional board foor the K144XV allowing lock of the 116/118 MHz XO to the KREF3 is also cancelled ? In that case we need the K144XV shematic... Jan -- View this message in context: http://elecraft.365791.n2.nabble.com/KREF3-External-Reference-card-tp5143036p5163097.html Sent from the [K3] mailing list archive at 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 hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
Guys, Someone on the fora pointed out that we all have different 49 MHz oscillators! I guess that many K3 owners *have bought oscillators delivered without input for the voltage control* not knowing that a future locking to an external reference would *not* be possible. The KTCXO3-1 delivered to me is manufactured by *KS* Electronics (part number 1099) and pin 1 (VCTRL) is *not connected* internally. *It can´t even be used to be locked in a PLL*. Also if a PLL is to be implemented you need to specify *Kv (tuning sensitivity)* for all oscillators to be delivered to your customers in order to keep the PLL loop filter working correctly. Did you offer a solution to this when you envisioned a *“REF IN (SMA): input for future external reference”.* * * Which type of oscillator delivered by Elecraft have VCTRL connected to pin #1 ?** What is the Kv specified pin #1 is connected? Comment on this please! 73 Jan __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
Hi Someone pointed out that we all have different 49 MHz oscillators. I guess that many K3 owners have oscillators without input for the voltage control. This pin is indicated in the KREF3 shematic as pin 1 (VCTRL) of Z1. My KTCXO3-1 is manufactured by KS Electronics (part number 1099) and pin 1 (VCTRL) is not connected internally. It can not be used in a PLL. I had to replace mine with a VCXO. I guess that is why Elecraft has cancelled that project, they would have to swap oscillators. *The design of the PLL is fairly simple and can be built on a small board plugging directly into J4. *One has to consider the resulting phase noise and spurs of the locked KREF3. *The Kref 3 must also fall back into a default mode when the extref is disconnected (portable use) or if the PLL unlocks. I wonder if the promised optional board foor the K144XV allowing lock of the 116/118 MHz XO to the KREF3 is also cancelled ? Jan -- View this message in context: http://elecraft.365791.n2.nabble.com/KREF3-External-Reference-card-tp5143036p5166771.html Sent from the [K3] mailing list archive at 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 hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KREF3 External Reference card
One of the reasons I chose the K3 was eventual 10-MHz ext. reference capability. Well, then I guess someone will have to come up with a 49.380 PLL circuit that uses 10-MHz as a reference. I have two such critters for mw use. One is distributed out of Israel and will be used in place of my 1152-MHz LO for 1296-MHz transverter (144-MHz IF). The other (ApolLO-A32) will replace the LO for my 3400-MHz transverter (also 144-MHz IF). Should be easier to do at lower frequencies. The new line of VHF/UHF transverters from DEMI will have ext. ref. option available in the future. It is already available on their mw line (2.3-GHz and up). 73, Ed - KL7UW -- Message: 2 Date: Wed, 09 Jun 2010 12:49:16 -0400 From: elecr...@g4fre.com Subject: Re: [Elecraft] KREF3 External Reference card To: elecraft@mailman.qth.net Message-ID: S364279Ab0FIQtQ/20100609164916z+25...@ams003.ftl.affinity.com Content-Type: text/plain; format=flowed; charset=iso-8859-1 This question is one I have been asking annually at the Elecraft booth at Hamcom in Dallas for the last 2 years. I will be asking again on Friday. The last information given was in jun 2008 when I was told availability in Jan 2009, heard no dates since! Based on this I didnt order the high spec reference for either of my K3. Dave ww2r Message: 40 Date: Wed, 9 Jun 2010 16:51:53 +0100 From: David Pratt da...@g4dmp.fsnet.co.uk Subject: Re: [Elecraft] KREF3 External Reference card To: Elecraft Reflector elecraft@mailman.qth.net Message-ID: sz6xoxazi7dmf...@g4dmp.fsnet.co.uk Content-Type: text/plain;charset=us-ascii;format=flowed I am afraid that I think you will find that it's on the back burner, Trevor, but I hope Wayne will reply and then we shall all know once and for all. I have been pushing for this for a long time as it would be nice to be able to feed my 10MHz Rubidium standard into J3 to get near precise calibration. I suspect that the problem is due to the internal reference oscillator of all our K3s being different. Although the KREF3 schematic shows the oscillator to be on 49.380 MHz, we all adjust this during the K3 calibration procedure. (Mine is on 49.379744) I could be wrong, but I shall await Wayne's response. 73 de David G4DMP __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
One of the reasons I chose the K3 was eventual 10-MHz ext. reference capability. Hopefully, it's still on the table for development and not permanently shelved. I can certainly understand the need to prioritize other K3 features and accessories before producing the external 10 MHz Reference module. Paul, W9AC __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
P.B. Christensen wrote: Hopefully, it's still on the table for development Eric's statement seemed to me to be as near to a definitive no it isn't as you are likely to get. It's a pity. It was a pretty unique selling point for the K3. The only other transceivers offering this facility that I can find are the much larger and more expensive IC-7700 and IC-7800 and the much less functional ADAT (if it really exists.) Julian, G4ILO - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KREF3-External-Reference-card-tp5167408p5167954.html Sent from the Elecraft mailing list archive at 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 hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
Hi Julian The ADAT web page has not been updated in 2 years. Their marketing is almost non existent. One would assume it is just an experimental platform like HPSDR. Who is really going to sink 6000 dollars into an experimental project? After the German magazine review identified spurious products in the receiver, not much has been heard from ADAT since. I expect that the ADAT transceiver will fall apart just like the Hilberling project did. Its a pity that this fine transceiver will not make it to the marketplace. I certainly wanted to buy one. John P.B. Christensen wrote: Hopefully, it's still on the table for development Eric's statement seemed to me to be as near to a definitive no it isn't as you are likely to get. It's a pity. It was a pretty unique selling point for the K3. The only other transceivers offering this facility that I can find are the much larger and more expensive IC-7700 and IC-7800 and the much less functional ADAT (if it really exists.) Julian, G4ILO --- On Fri, 6/11/10, Paul Christensen w...@arrl.net wrote: From: Paul Christensen w...@arrl.net Subject: Re: [Elecraft] KREF3 External Reference card To: elecraft@mailman.qth.net Date: Friday, June 11, 2010, 4:16 AM One of the reasons I chose the K3 was eventual 10-MHz ext. reference capability. Hopefully, it's still on the table for development and not permanently shelved. I can certainly understand the need to prioritize other K3 features and accessories before producing the external 10 MHz Reference module. Paul, W9AC __ 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: http://www.qsl.net/donate.html __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
Radio Amateur N5GE wrote: On Wed, 09 Jun 2010 10:29:52 -0700, Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com wrote: Yes, the most obvious place is the label on the back panel and the plug in the hole below it (#806 #1055 here). Do you intend to use the hole for something else? It is also mentioned in the copies of the docs I actually have, not to mention the specification that was given out when I actually purchased the radio. It is disappointing that this feature is not going to be available. As someone who often uses WSPR and other digital modes where you work on an exact frequency, I was looking forward to having this capability. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KREF3-External-Reference-card-tp5143036p5162030.html Sent from the [K3] mailing list archive at 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 hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
Hi Julian This is disappointing news. I certainly would have not bought the TCXO's for my K3's if this fact was known. John --- On Thu, 6/10/10, Julian, G4ILO julian.g4...@gmail.com wrote: From: Julian, G4ILO julian.g4...@gmail.com Subject: Re: [Elecraft] KREF3 External Reference card To: elecraft@mailman.qth.net Date: Thursday, June 10, 2010, 12:55 AM Radio Amateur N5GE wrote: On Wed, 09 Jun 2010 10:29:52 -0700, Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com wrote: Yes, the most obvious place is the label on the back panel and the plug in the hole below it (#806 #1055 here). Do you intend to use the hole for something else? It is also mentioned in the copies of the docs I actually have, not to mention the specification that was given out when I actually purchased the radio. It is disappointing that this feature is not going to be available. As someone who often uses WSPR and other digital modes where you work on an exact frequency, I was looking forward to having this capability. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KREF3-External-Reference-card-tp5143036p5162030.html Sent from the [K3] mailing list archive at 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 hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
Is the KREF3 (a) likely to be released in 2010 (b) under active development (c) on the schedule for development (d) on the back burner (e) still thinking about it 73 to all Trevor G0KTN Original Message Just wondering if anyone from Elecraft might comment as to when the KREF3 external reference input card may become available. Trevor G0KTN __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
I am afraid that I think you will find that it's on the back burner, Trevor, but I hope Wayne will reply and then we shall all know once and for all. I have been pushing for this for a long time as it would be nice to be able to feed my 10MHz Rubidium standard into J3 to get near precise calibration. I suspect that the problem is due to the internal reference oscillator of all our K3s being different. Although the KREF3 schematic shows the oscillator to be on 49.380 MHz, we all adjust this during the K3 calibration procedure. (Mine is on 49.379744) I could be wrong, but I shall await Wayne's response. 73 de David G4DMP In a recent message, Trevor Smithers tsmith...@cix.co.uk writes Is the KREF3 (a) likely to be released in 2010 (b) under active development (c) on the schedule for development (d) on the back burner (e) still thinking about it -- David G4DMP Leeds, England, UK __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
This question is one I have been asking annually at the Elecraft booth at Hamcom in Dallas for the last 2 years. I will be asking again on Friday. The last information given was in jun 2008 when I was told availability in Jan 2009, heard no dates since! Based on this I didnt order the high spec reference for either of my K3. Dave ww2r Message: 40 Date: Wed, 9 Jun 2010 16:51:53 +0100 From: David Pratt da...@g4dmp.fsnet.co.uk Subject: Re: [Elecraft] KREF3 External Reference card To: Elecraft Reflector elecraft@mailman.qth.net Message-ID: sz6xoxazi7dmf...@g4dmp.fsnet.co.uk Content-Type: text/plain;charset=us-ascii;format=flowed I am afraid that I think you will find that it's on the back burner, Trevor, but I hope Wayne will reply and then we shall all know once and for all. I have been pushing for this for a long time as it would be nice to be able to feed my 10MHz Rubidium standard into J3 to get near precise calibration. I suspect that the problem is due to the internal reference oscillator of all our K3s being different. Although the KREF3 schematic shows the oscillator to be on 49.380 MHz, we all adjust this during the K3 calibration procedure. (Mine is on 49.379744) I could be wrong, but I shall await Wayne's response. 73 de David G4DMP __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
The KREF3 is not in current planned development. I thought we had removed the references to it in all of our docs. Is it still showing up somewhere? 73, Eric --- On 6/9/2010 9:49 AM, elecr...@g4fre.com wrote: This question is one I have been asking annually at the Elecraft booth at Hamcom in Dallas for the last 2 years. I will be asking again on Friday. The last information given was in jun 2008 when I was told availability in Jan 2009, heard no dates since! Based on this I didnt order the high spec reference for either of my K3. Dave ww2r Message: 40 Date: Wed, 9 Jun 2010 16:51:53 +0100 From: David Prattda...@g4dmp.fsnet.co.uk Subject: Re: [Elecraft] KREF3 External Reference card To: Elecraft Reflectorelecraft@mailman.qth.net Message-ID:sz6xoxazi7dmf...@g4dmp.fsnet.co.uk Content-Type: text/plain;charset=us-ascii;format=flowed I am afraid that I think you will find that it's on the back burner, Trevor, but I hope Wayne will reply and then we shall all know once and for all. I have been pushing for this for a long time as it would be nice to be able to feed my 10MHz Rubidium standard into J3 to get near precise calibration. I suspect that the problem is due to the internal reference oscillator of all our K3s being different. Although the KREF3 schematic shows the oscillator to be on 49.380 MHz, we all adjust this during the K3 calibration procedure. (Mine is on 49.379744) I could be wrong, but I shall await Wayne's response. 73 de David G4DMP __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KREF3 External Reference card
On Wed, 09 Jun 2010 10:29:52 -0700, Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com wrote: Yes, the most obvious place is the label on the back panel and the plug in the hole below it (#806 #1055 here). Do you intend to use the hole for something else? The KREF3 is not in current planned development. I thought we had removed the references to it in all of our docs. Is it still showing up somewhere? 73, Eric --- [snip] __ 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: http://www.qsl.net/donate.html
[Elecraft] KREF3 External Reference card
Just wondering if anyone from Elecraft might comment as to when the KREF3 external reference input card may become available. Trevor G0KTN __ 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: http://www.qsl.net/donate.html
