KX3-2M module?
Locked
123
123
 
|
Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? Is
it still planned for high enough stability for JT65B mode and a maximum power of 10w? TNX and VY 73, Lance* * -- Lance Collister, W7GJ (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Windows Messenger: [hidden email] Skype: lanceW7GJ 2m DXCC #11/6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Lance,
Its been a long wait.... Last thing I remembered posted here was, it is still in development/testing and possibly 3 or 4 watts, less than most HTs. Emory WM3M -----Original Message----- From: Lance Collister, W7GJ Sent: Monday, April 07, 2014 9:57 AM To: Elecraft Mailing List Subject: [Elecraft] KX3-2M module? Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? Is it still planned for high enough stability for JT65B mode and a maximum power of 10w? TNX and VY 73, Lance* * -- Lance Collister, W7GJ (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Windows Messenger: [hidden email] Skype: lanceW7GJ 2m DXCC #11/6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by W7GJ, Lance
Hi Ray et al,
Many thanks for the status update! I agree it is certainly a good thing to wait and fine tune the hardware before officially releasing the product, and Elecraft does a great job of that. I will look forward to hearing more next month ;-) I don't operate 2m FM myself, but it would be nice to have a backup 2m exciter. I think if it could do 5w in JT65B mode, it should be able to drive my solid state amp up enough to bring my 8877 up to 1500w output on EME. ;-) Provided it is very stable.... VY 73, Lance On 4/7/2014 2:10 PM, Ray Sills wrote: > HI Lance: > > Yours is a frequent inquiry, but you should know that there was a redesign of the > the module's board to address an issue that showed up in field testing. At the > moment, the replacement version is in field testing, so the expectation is that all > is now OK, and that there should be an announcement very soon. If I were a betting > man, I'd wager that Elecraft would want to be taking orders at Dayton. > > Granted, it does seem like it's taking forever to get this item to delivery status, > but Elecraft has been rigorous about making sure that their shipping products are > as good as they can be. This item is all hardware, so it really needs to be "just > right" when it ships. With the KX3 itself, there are fixes and additions that can > be part of a firmware revision, but that's not true here. > > I'm still on the fence about the 2M module. I'm sure it will be good, but at this > point, I have not been doing any 2M operating, except for using my HT with a local > club net. And, I don't need the module for that. I also have an FT-817 which > works nicely on 2M SSB.. so there is very little pressure for me to consider the > module. But then... who knows? :) > > 73 de Ray > K2ULR > KX3 #211 > > On Apr 7, 2014, at 9:57 AM, Lance Collister, W7GJ wrote: > >> Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? >> Is it still planned for high enough stability for JT65B mode and a maximum power >> of 10w? TNX and VY 73, Lance* >> * >> >> -- >> Lance Collister, W7GJ >> (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) >> P.O. Box 73 >> Frenchtown, MT 59834-0073 >> USA >> TEL: (406) 626-5728 >> QTH: DN27ub >> URL: http://www.bigskyspaces.com/w7gj >> Windows Messenger: [hidden email] >> Skype: lanceW7GJ >> 2m DXCC #11/6m DXCC #815 >> >> Interested in 6m EME? Ask me about subscribing to the Magic Band EME >> email group, or just fill in the request box at the bottom of my web >> page (above)! >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] > > -- Lance Collister, W7GJ (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Windows Messenger: [hidden email] Skype: lanceW7GJ 2m DXCC #11/6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by W7GJ, Lance
Don't know about stability but I think I read power more like 2 - 3 watts, at least no more than 5.
Sent from my iPhone ...nr4c. bill > On Apr 7, 2014, at 9:57 AM, "Lance Collister, W7GJ" <[hidden email]> wrote: > > Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? Is it still planned for high enough stability for JT65B mode and a maximum power of 10w? TNX and VY 73, Lance* > * > > -- > Lance Collister, W7GJ > (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) > P.O. Box 73 > Frenchtown, MT 59834-0073 > USA > TEL: (406) 626-5728 > QTH: DN27ub > URL: http://www.bigskyspaces.com/w7gj > Windows Messenger: [hidden email] > Skype: lanceW7GJ > 2m DXCC #11/6m DXCC #815 > > Interested in 6m EME? Ask me about subscribing to the Magic Band EME > email group, or just fill in the request box at the bottom of my web > page (above)! > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Facebook comes in useful, sometimes...
Just found this on the KX3 friends page. http://www.worldwidedx.com/hf-bands-hf-rigs/154636-elecraft-kx3-2-meter-option-preview-pic.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Sorry, I just realised that was from May last year!
They don't get many posts on their wall on that Facebook page!! DAve (G0DJA) ----- Original Message ----- From: "Dave" <[hidden email]> To: "Elecraft Mailing List" <[hidden email]> Sent: Monday, April 07, 2014 3:14 PM Subject: Re: [Elecraft] KX3-2M module? > Facebook comes in useful, sometimes... > > Just found this on the KX3 friends page. > > http://www.worldwidedx.com/hf-bands-hf-rigs/154636-elecraft-kx3-2-meter-option-preview-pic.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Dave-5
Hi Dave:
It was nice to view that photo, but it appears to be almost a year old, which suggests to me that it is one of the prototype units, which has been superseded by a board revision, following the original field testing. Nevertheless, I'm sure that the current version in testing is quite similar. After all, the physical constraints for making the module fit inside the case have not changed. 73 de Ray K2ULR KX3 #211 On Apr 7, 2014, at 11:14 AM, Dave wrote: > Facebook comes in useful, sometimes... > > Just found this on the KX3 friends page. > > http://www.worldwidedx.com/hf-bands-hf-rigs/154636-elecraft-kx3-2-meter-option-preview-pic.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by W7GJ, Lance
The answers to some of these questions are on the Elecraft web pages in the
KX3-2m FAQ. Always best to go to the source to avoid conjecture ! John G4ZTR -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Lance Collister, W7GJ Sent: 07 April 2014 14:57 To: Elecraft Mailing List Subject: [Elecraft] KX3-2M module? Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? Is it still planned for high enough stability for JT65B mode and a maximum power of 10w? TNX and VY 73, Lance* * -- Lance Collister, W7GJ (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Windows Messenger: [hidden email] Skype: lanceW7GJ 2m DXCC #11/6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
Administrator
|
In reply to this post by W7GJ, Lance
"Lance Collister, W7GJ" <[hidden email]> wrote:
> Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? Is it still planned for high enough stability for JT65B mode and a maximum power of 10w? Hi Lance, I'm not sure where you got that figure. Our postings on this topic are summarized in an FAQ (http://www.elecraft.com/manual/KX3-2M%20FAQ.htm). - Max power is 3 W. - The module is unlikely to support very narrowband modes, because short-term local oscillator excursions at the I.F. (48 MHz) are, in effect, multiplied by about 3. FM and AM modes can be used with normal factory temperature compensation on 2 m. To use CW/SSB, the extended VFO temperature compensation procedure will be required. This level of compensation would also allow the use of narrow-shift RTTY. But JT65 and similar modes on 2 meters would probably require tighter frequency stability. 73, Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by W7GJ, Lance
Read here
http://www.elecraft.com/manual/KX3-2M%20FAQ.htm There was probably more info imparted at the Visalia DX Convention last weekend but I was not there. 73. Phil W7OX On 4/7/14, 7:25 AM, Lance Collister, W7GJ wrote: > Hi Ray et al, > > Many thanks for the status update! I agree it > is certainly a good thing to wait and fine tune > the hardware before officially releasing the > product, and Elecraft does a great job of > that. I will look forward to hearing more next > month ;-) > > I don't operate 2m FM myself, but it would be > nice to have a backup 2m exciter. I think if it > could do 5w in JT65B mode, it should be able to > drive my solid state amp up enough to bring my > 8877 up to 1500w output on EME. ;-) Provided > it is very stable.... > > VY 73, Lance > > On 4/7/2014 2:10 PM, Ray Sills wrote: >> HI Lance: >> >> Yours is a frequent inquiry, but you should >> know that there was a redesign of the the >> module's board to address an issue that showed >> up in field testing. At the moment, the >> replacement version is in field testing, so the >> expectation is that all is now OK, and that >> there should be an announcement very soon. If >> I were a betting man, I'd wager that Elecraft >> would want to be taking orders at Dayton. >> >> Granted, it does seem like it's taking forever >> to get this item to delivery status, but >> Elecraft has been rigorous about making sure >> that their shipping products are as good as >> they can be. This item is all hardware, so it >> really needs to be "just right" when it ships. >> With the KX3 itself, there are fixes and >> additions that can be part of a firmware >> revision, but that's not true here. >> >> I'm still on the fence about the 2M module. >> I'm sure it will be good, but at this point, I >> have not been doing any 2M operating, except >> for using my HT with a local club net. And, I >> don't need the module for that. I also have an >> FT-817 which works nicely on 2M SSB.. so there >> is very little pressure for me to consider the >> module. But then... who knows? :) >> >> 73 de Ray >> K2ULR >> KX3 #211 >> >> On Apr 7, 2014, at 9:57 AM, Lance Collister, >> W7GJ wrote: >> >>> Has anybody heard anything regarding the >>> timing of the KX3-2M module for the KX3? Is >>> it still planned for high enough stability for >>> JT65B mode and a maximum power of 10w? TNX and >>> VY 73, Lance* >>> * >>> >>> -- >>> Lance Collister, W7GJ >>> (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, >>> E51SIX, 3D2LR, 5W0GJ, E6M, TX5K) >>> P.O. Box 73 >>> Frenchtown, MT 59834-0073 >>> USA >>> TEL: (406) 626-5728 >>> QTH: DN27ub >>> URL: http://www.bigskyspaces.com/w7gj >>> Windows Messenger: [hidden email] >>> Skype: lanceW7GJ >>> 2m DXCC #11/6m DXCC #815 >>> >>> Interested in 6m EME? Ask me about >>> subscribing to the Magic Band EME >>> email group, or just fill in the request box >>> at the bottom of my web >>> page (above)! ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by W7GJ, Lance
3 - 4 watts is fine with me on 2M. I know it'll drive the big TE Systems
amp to 400 watts out because I could do that with my (long gone) FT-817. 73, Charlie k3ICH ----- Original Message ----- From: "Lance Collister, W7GJ" <[hidden email]> To: "Ray Sills" <[hidden email]> Cc: "Elecraft Mailing List" <[hidden email]> Sent: Monday, April 07, 2014 10:25 AM Subject: Re: [Elecraft] KX3-2M module? > Hi Ray et al, > > Many thanks for the status update! I agree it is certainly a good thing > to wait and fine tune the hardware before officially releasing the > product, and Elecraft does a great job of that. I will look forward to > hearing more next month ;-) > > I don't operate 2m FM myself, but it would be nice to have a backup 2m > exciter. I think if it could do 5w in JT65B mode, it should be able to > drive my solid state amp up enough to bring my 8877 up to 1500w output on > EME. ;-) Provided it is very stable.... > > VY 73, Lance > > On 4/7/2014 2:10 PM, Ray Sills wrote: >> HI Lance: >> >> Yours is a frequent inquiry, but you should know that there was a >> redesign of the the module's board to address an issue that showed up in >> field testing. At the moment, the replacement version is in field >> testing, so the expectation is that all is now OK, and that there should >> be an announcement very soon. If I were a betting man, I'd wager that >> Elecraft would want to be taking orders at Dayton. >> >> Granted, it does seem like it's taking forever to get this item to >> delivery status, but Elecraft has been rigorous about making sure that >> their shipping products are as good as they can be. This item is all >> hardware, so it really needs to be "just right" when it ships. With the >> KX3 itself, there are fixes and additions that can be part of a firmware >> revision, but that's not true here. >> >> I'm still on the fence about the 2M module. I'm sure it will be good, >> but at this point, I have not been doing any 2M operating, except for >> using my HT with a local club net. And, I don't need the module for >> that. I also have an FT-817 which works nicely on 2M SSB.. so there is >> very little pressure for me to consider the module. But then... who >> knows? :) >> >> 73 de Ray >> K2ULR >> KX3 #211 >> >> On Apr 7, 2014, at 9:57 AM, Lance Collister, W7GJ wrote: >> >>> Has anybody heard anything regarding the timing of the KX3-2M module for >>> the KX3? Is it still planned for high enough stability for JT65B mode >>> and a maximum power of 10w? TNX and VY 73, Lance* >>> * >>> >>> -- >>> Lance Collister, W7GJ >>> (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, >>> TX5K) >>> P.O. Box 73 >>> Frenchtown, MT 59834-0073 >>> USA >>> TEL: (406) 626-5728 >>> QTH: DN27ub >>> URL: http://www.bigskyspaces.com/w7gj >>> Windows Messenger: [hidden email] >>> Skype: lanceW7GJ >>> 2m DXCC #11/6m DXCC #815 >>> >>> Interested in 6m EME? Ask me about subscribing to the Magic Band EME >>> email group, or just fill in the request box at the bottom of my web >>> page (above)! >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [hidden email] >> >> > > > -- > Lance Collister, W7GJ > (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, > TX5K) > P.O. Box 73 > Frenchtown, MT 59834-0073 > USA > TEL: (406) 626-5728 > QTH: DN27ub > URL: http://www.bigskyspaces.com/w7gj > Windows Messenger: [hidden email] > Skype: lanceW7GJ > 2m DXCC #11/6m DXCC #815 > > Interested in 6m EME? Ask me about subscribing to the Magic Band EME > email group, or just fill in the request box at the bottom of my web > page (above)! > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by wayne burdick
I'm hoping to use it with a 24GHz transverter, so I guess I'll be embarking
on the extended VFO temperature compensation procedure at sometime after deciding on whether to purhase the KX3-2M unit. However, the more I hear and read about the KX3-2M, the more I'm thinking that it's not going to be good enough. I enjoy using CW on 2M and most of the contacts on 24GHz will probably be CW as well, but my transverter is not GPS locked, so the combination may not work too well. Dave (G0DJA) ----- Original Message ----- Cc: "Elecraft Mailing List" <[hidden email]> Sent: Monday, April 07, 2014 4:37 PM Subject: Re: [Elecraft] KX3-2M module? > - The module is unlikely to support very narrowband modes, because > short-term local oscillator excursions at the I.F. (48 MHz) are, in > effect, multiplied by about 3. FM and AM modes can be used with normal > factory temperature compensation on 2 m. To use CW/SSB, the extended VFO > temperature compensation procedure will be required. This level of > compensation would also allow the use of narrow-shift RTTY. But JT65 and > similar modes on 2 meters would probably require tighter frequency > stability. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by W7GJ, Lance
Lance,
Wayne recently commented that they had some re-design after the first field test round, and were soon to go out with the second field test. I wrote Wayne directly for more info, but have not heard back, as yet...I signed-up to be a field tester so am hoping that I may have one to test when that happens. I will be testing it and the KX3 especially looking at use for eme and 2m weak-signal operation. I am lucky to have a couple RFC 2-23 linear amps (2w input/30w out) which will match up with low power level of the 2M module. That will drive another RFC linear (30w/170w) easily to 55w to drive my 8877. I presently use the latter amp so my DEMI transverter can loaf a bit when running JT65 with the K3. I have the test equipment to measure power and frequency to determine performance. As in the past I will create a webpage to document what I find. I have not built a computer I/F for the KX3 so I will just simulate JT65 transmit by keydown CW. I ran a freq. drift test on my current line-up by running JT65 for 30-minutes and noting frequency drift. Its documented: http://www.kl7uw.com/techtopics.htm 73, Ed - KL7UW -------------------- From: "Lance Collister, W7GJ" <[hidden email]> To: Ray Sills <[hidden email]> Cc: Elecraft Mailing List <[hidden email]> Subject: Re: [Elecraft] KX3-2M module? Message-ID: <[hidden email]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Hi Ray et al, Many thanks for the status update! I agree it is certainly a good thing to wait and fine tune the hardware before officially releasing the product, and Elecraft does a great job of that. I will look forward to hearing more next month ;-) I don't operate 2m FM myself, but it would be nice to have a backup 2m exciter. I think if it could do 5w in JT65B mode, it should be able to drive my solid state amp up enough to bring my 8877 up to 1500w output on EME. ;-) Provided it is very stable.... VY 73, Lance 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Dave-5
Dave,
My interest in the KX3-2M has almost entirely gone after this news about the frequency stability, and there is no way to lock it to another high stability standard. I have already completed the extended VFO temperature compensation procedure. I suspect that I will either rebuild my own 28 to 144 MHz transverter which was stable enough or purchase a more modern high performance transverter such as the HA1YA unit for driving my SSPA for 144 MHz EME and terrestrial DX, which only needs a few watts of drive. I am interested in the PX3 however :-) 73 David Anderson GM4JJJ > On 7 Apr 2014, at 19:07, "Dave" <[hidden email]> wrote: > > I'm hoping to use it with a 24GHz transverter, so I guess I'll be embarking on the extended VFO temperature compensation procedure at sometime after deciding on whether to purhase the KX3-2M unit. > > However, the more I hear and read about the KX3-2M, the more I'm thinking that it's not going to be good enough. I enjoy using CW on 2M and most of the contacts on 24GHz will probably be CW as well, but my transverter is not GPS locked, so the combination may not work too well. > > Dave (G0DJA) > > ----- Original Message ----- Cc: "Elecraft Mailing List" <[hidden email]> > Sent: Monday, April 07, 2014 4:37 PM > Subject: Re: [Elecraft] KX3-2M module? > > >> - The module is unlikely to support very narrowband modes, because short-term local oscillator excursions at the I.F. (48 MHz) are, in effect, multiplied by about 3. FM and AM modes can be used with normal factory temperature compensation on 2 m. To use CW/SSB, the extended VFO temperature compensation procedure will be required. This level of compensation would also allow the use of narrow-shift RTTY. But JT65 and similar modes on 2 meters would probably require tighter frequency stability. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by wayne burdick
On 07/04/2014 17:37, Wayne Burdick wrote:
> "Lance Collister, W7GJ" <[hidden email]> wrote: > >> Has anybody heard anything regarding the timing of the KX3-2M module for the KX3? Is it still planned for high enough stability for JT65B mode and a maximum power of 10w? > > Hi Lance, > > I'm not sure where you got that figure. Our postings on this topic are summarized in an FAQ (http://www.elecraft.com/manual/KX3-2M%20FAQ.htm). > > - Max power is 3 W. > > - The module is unlikely to support very narrowband modes, because short-term local oscillator excursions at the I.F. (48 MHz) are, in effect, multiplied by about 3. FM and AM modes can be used with normal factory temperature compensation on 2 m. To use CW/SSB, the extended VFO temperature compensation procedure will be required. This level of compensation would also allow the use of narrow-shift RTTY. But JT65 and similar modes on 2 meters would probably require tighter frequency stability. > > 73, > Wayne > N6KR I am somewhat curious about the pessimism here. Surely the important characteristic is the short-term stability over the one to three minute time frame, and most of that is going to come from thermal. So if the base oscillator is +/- 1ppm over 0-50 (from the manual and about the TCXO midpoint) this is 150Hz at 2m. A 10Hz drift which is the FAQ number would require a temperature change of the oscillator module of about three degrees, or about a degree per minute. That seem quite a lot to me, particularly if you are applying s/w correction to help the TCXO. Stewart/G3YSX ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Hello,
Why would a little instability be a problem on CW or SSB? I mean, you could be off 200Hz in CW and that wouldn't be too much of a problem. I used to own a K1 and it was all over the place until it warmed up, never prevented me from making contact and rag-chewing.. Same for SSB.. You just need to turn the knob a little until the temperature stabilizes. It's a DDS VFO, still much better than a regular one. For some digital modes, I understand, but otherwise, who cares...? Gil. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
Administrator
|
When the extended temperature compensation is performed, short-term stability on 2 meters is about +/- 10 Hz, more than adequate for FM/AM/CW/SSB and some data modes.
73, Wayne N6KR On Apr 8, 2014, at 11:23 AM, Gil G. <[hidden email]> wrote: > Hello, > > Why would a little instability be a problem on CW or SSB? > I mean, you could be off 200Hz in CW and that wouldn't be too much of a > problem. I used to own a K1 and it was all over the place until it > warmed up, never prevented me from making contact and rag-chewing.. > Same for SSB.. You just need to turn the knob a little until the > temperature stabilizes. It's a DDS VFO, still much better than a regular > one. For some digital modes, I understand, but otherwise, who cares...? > > Gil. > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
Can you please define "short-term", Wayne? Is it 10 seconds, 30 seconds, 1 minute, 2 minutes of transmitting? Thanks, Olli Contest, DX & radio projects: http://www.dh8bqa.de Am 08.04.2014 21:58, schrieb Wayne Burdick: > When the extended temperature compensation is performed, short-term stability on 2 meters is about +/- 10 Hz, more than adequate for FM/AM/CW/SSB and some data modes. > > 73, > Wayne > N6KR > > On Apr 8, 2014, at 11:23 AM, Gil G. <[hidden email]> wrote: > >> Hello, >> >> Why would a little instability be a problem on CW or SSB? >> I mean, you could be off 200Hz in CW and that wouldn't be too much of a >> problem. I used to own a K1 and it was all over the place until it >> warmed up, never prevented me from making contact and rag-chewing.. >> Same for SSB.. You just need to turn the knob a little until the >> temperature stabilizes. It's a DDS VFO, still much better than a regular >> one. For some digital modes, I understand, but otherwise, who cares...? >> >> Gil. >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
|
In reply to this post by Gil G.
Yes, and No, to be unhelpfully exact...
My TS2000X is "off" by about 1.7kHz compared to other peoples 'dial' settings on 1296MHz. I know this and I compensate, but the higher up the chain you go, the worse the problem gets... Since I have another radio to "do" 2M on (TS2000X) I'm only looking to use the KX3-2M for two things. 1. The occasional use in the field, or from a hotel room (though not so much that to be honest) where I agree, I can probably compensate manually, as long as it doesn't drift too far, too fast but the other reason may be a game killer, as far as I'm concerned. and 2. As the IF for a 24GHz narrowband transverter. Now here things do get critical. a few Hz on 2M equates to a heck of a lot of kHz on 24GHz after transverting and taking the stability, or lack of it, of the 24GHz gear as well. So, no, some of us do care and unless the KX3-2M can at least match something like the 2M stability of the FT817 (which isn't all that great anyway) then this wont be something that many serious users of 2M gear will accept as being "OK". Back in the 1980s there were radios on 2M which were well known for their drift and lack of a good output on 2M, even on SSB, and I'd hate to put out a poor signal on 2M CW from an Elecraft bit of kit. That really could damage the company name with potential future customers and provide amunition to their competitors, in my opinion. Dave (G0DJA) ----- Original Message ----- Sent: Tuesday, April 08, 2014 6:23 PM Subject: Re: [Elecraft] KX3-2M module? > Hello, > > Why would a little instability be a problem on CW or SSB? > I mean, you could be off 200Hz in CW and that wouldn't be too much of a > problem. I used to own a K1 and it was all over the place until it > warmed up, never prevented me from making contact and rag-chewing.. > Same for SSB.. You just need to turn the knob a little until the > temperature stabilizes. It's a DDS VFO, still much better than a regular > one. For some digital modes, I understand, but otherwise, who cares...? > > Gil. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
|
Administrator
|
In reply to this post by Oliver Dröse
Hi Oliver,
Frequency corrections due to temperature compensation can occur as often as once per second, though they happen less often during steady-state receive or transmit. We're limited by synthesizer step size to corrections of about +/- 3 Hz at 2 m. 73, Wayne N6KR On Apr 8, 2014, at 1:26 PM, Oliver Dröse <[hidden email]> wrote: > > Can you please define "short-term", Wayne? Is it 10 seconds, 30 seconds, 1 minute, 2 minutes of transmitting? > > Thanks, > Olli ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |