Quick survey: Need a 0-dBm transverter interface module for the KX3? (KXXV3)
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Quick survey: Need a 0-dBm transverter interface module for the KX3? (KXXV3)
 
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Hi all,
We've had a couple of requests for a 0-dBm transverter I.F. module for the KX3. Normally the lowest power level the KX3 can put out is 0.1 watts, so the I.F. module would drop the signal by 20 dB. Such a module could easily be designed, but there's one catch (I'll get to that). A composite RF detector on the module would provide accurate measurement of the RF output signal level from about -10 to +2 dBm, probably). The KX3's normal TUNE power display in watts would change to milliwatts and dBm rather than watts and SWR. (The K3 does the same thing when a KXV3 module is in use.) An SMA connector on the right side panel would serve as the transverter I.F. input/output. There would *not* be both RX and TX jacks, so all external transverters would have to have their own T/R path switching. We would provide a DC voltage on the SMA output jack (some transverters use this for signaling). We also plan to do transverter band switching via the GPIO signal on the ACC2 jack. This could control Elecraft XV-series transverters. The other pin on the ACC2 jack is a keying output which many transverters also need. Note that the XV-series can use a 0.1-watt I.F. signal, so technically a KXXV3 is not needed in that case. But the KXXV3 would allow you to keep an HF antenna connected to the BNC antenna jack while transverters are connected to the SMA jack. It would also provide better control over the drive level on bands where you've selected the 0-dBm output. The KX3 has up to 9 programmable transverter band displays, and a choice of 40/20/15/10/6 meters as the I.F., selected on a per- transverter-band basis. 10 meters is used for most trnasverters. Here's the catch: The only place such a module could go would be the same place where we plan to mount the 2-meter transverter, so the two would be mutually exclusive. Please let me know if you could definitely use a KXXV3. If there's enough interest we'll add it to the list of future options. 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 |
Re: [KX3] Quick survey: Need a 0-dBm transverter interface module for the KX3? (KXXV3)
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Hi Wayne,
I think it's a great idea, but the major appeal would be if you also could offer an ultra-portable "KXXV" transverter series to go with this. My thought is something maybe half the size of the KX3, with room for several transverter modules, like 2m, 70cm, 4m, etc. Ideally with 5W+ output on all of those, and ideally with EXT Power (also in the KXXV3) from the KX3 so you'd just have to hook up a single power supply to the KX3. 73, Thomas M0TRN On 25 September 2012 03:06, Wayne Burdick <[hidden email]> wrote: > Hi all, > > We've had a couple of requests for a 0-dBm transverter I.F. module for > the KX3. Normally the lowest power level the KX3 can put out is 0.1 > watts, so the I.F. module would drop the signal by 20 dB. Such a > module could easily be designed, but there's one catch (I'll get to > that). > > A composite RF detector on the module would provide accurate > measurement of the RF output signal level from about -10 to +2 dBm, > probably). The KX3's normal TUNE power display in watts would change > to milliwatts and dBm rather than watts and SWR. (The K3 does the same > thing when a KXV3 module is in use.) > > An SMA connector on the right side panel would serve as the > transverter I.F. input/output. There would *not* be both RX and TX > jacks, so all external transverters would have to have their own T/R > path switching. We would provide a DC voltage on the SMA output jack > (some transverters use this for signaling). > > We also plan to do transverter band switching via the GPIO signal on > the ACC2 jack. This could control Elecraft XV-series transverters. The > other pin on the ACC2 jack is a keying output which many transverters > also need. Note that the XV-series can use a 0.1-watt I.F. signal, so > technically a KXXV3 is not needed in that case. But the KXXV3 would > allow you to keep an HF antenna connected to the BNC antenna jack > while transverters are connected to the SMA jack. It would also > provide better control over the drive level on bands where you've > selected the 0-dBm output. > > The KX3 has up to 9 programmable transverter band displays, and a > choice of 40/20/15/10/6 meters as the I.F., selected on a per- > transverter-band basis. 10 meters is used for most trnasverters. > > Here's the catch: > > The only place such a module could go would be the same place where we > plan to mount the 2-meter transverter, so the two would be mutually > exclusive. > > Please let me know if you could definitely use a KXXV3. If there's > enough interest we'll add it to the list of future options. > > 73, > Wayne > N6KR > > > > ------------------------------------ > > Yahoo! Groups Links > > <*> To visit your group on the web, go to: > http://groups.yahoo.com/group/KX3/ > > <*> Your email settings: > Individual Email | Traditional > > <*> To change settings online go to: > http://groups.yahoo.com/group/KX3/join > (Yahoo! ID required) > > <*> To change settings via email: > [hidden email] > [hidden email] > > <*> To unsubscribe from this group, send an email to: > [hidden email] > > <*> Your use of Yahoo! Groups is subject to: > http://docs.yahoo.com/info/terms/ > > 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 |
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I would be very keen on something like this but not at the expense of performance. IMHO it would be a mistake to make transverters small with poor strong signal handling and sensitivity. In Europe with the high level of local activity on narrow band modes signal strengths can be huge.
Best regards, Tim Hague Skype m0afj.Tim Sent on my iPad On 25 Sep 2012, at 12:45, Thomas Horsten <[hidden email]> wrote: > Hi Wayne, > > I think it's a great idea, but the major appeal would be if you also could > offer an ultra-portable "KXXV" transverter series to go with this. My > thought is something maybe half the size of the KX3, with room for several > transverter modules, like 2m, 70cm, 4m, etc. Ideally with 5W+ output on all > of those, and ideally with EXT Power (also in the KXXV3) from the KX3 so > you'd just have to hook up a single power supply to the KX3. > > 73, Thomas M0TRN > > On 25 September 2012 03:06, Wayne Burdick <[hidden email]> wrote: > >> Hi all, >> >> We've had a couple of requests for a 0-dBm transverter I.F. module for >> the KX3. Normally the lowest power level the KX3 can put out is 0.1 >> watts, so the I.F. module would drop the signal by 20 dB. Such a >> module could easily be designed, but there's one catch (I'll get to >> that). >> >> A composite RF detector on the module would provide accurate >> measurement of the RF output signal level from about -10 to +2 dBm, >> probably). The KX3's normal TUNE power display in watts would change >> to milliwatts and dBm rather than watts and SWR. (The K3 does the same >> thing when a KXV3 module is in use.) >> >> An SMA connector on the right side panel would serve as the >> transverter I.F. input/output. There would *not* be both RX and TX >> jacks, so all external transverters would have to have their own T/R >> path switching. We would provide a DC voltage on the SMA output jack >> (some transverters use this for signaling). >> >> We also plan to do transverter band switching via the GPIO signal on >> the ACC2 jack. This could control Elecraft XV-series transverters. The >> other pin on the ACC2 jack is a keying output which many transverters >> also need. Note that the XV-series can use a 0.1-watt I.F. signal, so >> technically a KXXV3 is not needed in that case. But the KXXV3 would >> allow you to keep an HF antenna connected to the BNC antenna jack >> while transverters are connected to the SMA jack. It would also >> provide better control over the drive level on bands where you've >> selected the 0-dBm output. >> >> The KX3 has up to 9 programmable transverter band displays, and a >> choice of 40/20/15/10/6 meters as the I.F., selected on a per- >> transverter-band basis. 10 meters is used for most trnasverters. >> >> Here's the catch: >> >> The only place such a module could go would be the same place where we >> plan to mount the 2-meter transverter, so the two would be mutually >> exclusive. >> >> Please let me know if you could definitely use a KXXV3. If there's >> enough interest we'll add it to the list of future options. >> >> 73, >> Wayne >> N6KR >> >> >> >> ------------------------------------ >> >> Yahoo! Groups Links >> >> <*> To visit your group on the web, go to: >> http://groups.yahoo.com/group/KX3/ >> >> <*> Your email settings: >> Individual Email | Traditional >> >> <*> To change settings online go to: >> http://groups.yahoo.com/group/KX3/join >> (Yahoo! ID required) >> >> <*> To change settings via email: >> [hidden email] >> [hidden email] >> >> <*> To unsubscribe from this group, send an email to: >> [hidden email] >> >> <*> Your use of Yahoo! Groups is subject to: >> http://docs.yahoo.com/info/terms/ > ______________________________________________________________ > 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 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 |
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In reply to this post by wayne burdick
I know this is an old survey, but I would like to express my interest in such an interface. It would be extremely useful to me for my VHF transverter plans. It certainly would simplify things enormously.
So please consider this as an option. I would be very happy to field test a prototype. Many thanks, David GM4JJJ. |
Re: Quick survey: Need a 0-dBm transverter interface module for the KX3? (KXXV3)
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No thank you, David, this is something about which I have no interest.
The K2 and K3 are adequately equipped for transverter functionality. I use an XV144 with my K2 and the XV70 with my K3. The KX3 is a truly portable rig and I feel its reputation as such is jeopardised by lots of external add-on. I do feel that people requiring external amplifiers, panadapters, transverters, etc would be better served by a K3. Let our friends at Elecraft not spend valuable development resources on something which will have marginal appeal. 73 de David G4DMP In a recent message, GM4JJJ <[hidden email]> writes >I know this is an old survey, but I would like to express my interest in such >an interface. -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + ______________________________________________________________ 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] |
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In reply to this post by GM4JJJ
Hi everyone!
All this talk about SPE got me looking at those amps. How much are they? Can't seem to find any prices. That 1K-FA looks interesting. Does it play with the K3 as well as the KPA-500? I heard that KPA-500 has some functionality that can only be used with the K3. I'm assuming its the band switching using the buttons on the amp itself. Is there something else that is specific to that combo? I'm sure someone here is using a K3 with that SPE amp. Can you share your thoughts? Thanks in advance! __________________ Slava (Sal) B, W2RMS [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] ______________________________________________________________ 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] |
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In reply to this post by David Pratt
David, I only expressed an interest in a product that Elecraft had mentioned as a possibility. I don't have the luxury of a K3 or K2 and the KX3. The KX3 is the perfect small rig for transverting to other bands or would be if the small internal interface was available as an option to go in the same space as the internal 2m transverter.
I may make one myself of I can get sufficient details from Elecraft. David Anderson GM4JJJ > On 13 May 2014, at 13:05, David G4DMP <[hidden email]> wrote: > > No thank you, David, this is something about which I have no interest. > The K2 and K3 are adequately equipped for transverter functionality. I > use an XV144 with my K2 and the XV70 with my K3. > > The KX3 is a truly portable rig and I feel its reputation as such is > jeopardised by lots of external add-on. I do feel that people requiring > external amplifiers, panadapters, transverters, etc would be better > served by a K3. Let our friends at Elecraft not spend valuable > development resources on something which will have marginal appeal. > > 73 de David G4DMP > > In a recent message, GM4JJJ <[hidden email]> writes >> I know this is an old survey, but I would like to express my interest in such >> an interface. > > -- > + - - - - - - - - - - - - - - - - + > | David M Pratt, Kippax, Leeds. | > | Website: http://www.g4dmp.co.uk | > + - - - - - - - - - - - - - - - - + > > ______________________________________________________________ > 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] |
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In reply to this post by W2RMS
http://www.expertampsusa.com/ On 5/13/14, 5:20 AM, Slava Baytalskiy wrote: > Hi everyone! > All this talk about SPE got me looking at those amps. > How much are they? Can't seem to find any prices. > That 1K-FA looks interesting. Does it play with the K3 as well as the KPA-500? > I heard that KPA-500 has some functionality that can only be used with the K3. I'm assuming its the band switching using the buttons on the amp itself. > Is there something else that is specific to that combo? > > I'm sure someone here is using a K3 with that SPE amp. Can you share your thoughts? > Thanks in advance! > __________________ > Slava (Sal) B, W2RMS > [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] |
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In reply to this post by W2RMS
I have been using the combo of K3 and Expert 1K-FA for the last 5 years. I
have shared my impressions here couple of times and so did several others. Just try the achieve search. There is also a reflector devoted to SPE amps and there are several people who uses the combination. 73, Igor UA9CDC ----- Original Message ----- From: "Slava Baytalskiy" <[hidden email]> To: "Elecraft Reflector" <[hidden email]> Sent: Tuesday, May 13, 2014 6:20 PM Subject: [Elecraft] SPE 1K-FA questions > Hi everyone! > All this talk about SPE got me looking at those amps. > How much are they? Can't seem to find any prices. > That 1K-FA looks interesting. Does it play with the K3 as well as the > KPA-500? > I heard that KPA-500 has some functionality that can only be used with the > K3. I'm assuming its the band switching using the buttons on the amp > itself. > Is there something else that is specific to that combo? > > I'm sure someone here is using a K3 with that SPE amp. Can you share your > thoughts? > Thanks in advance! > __________________ > Slava (Sal) B, W2RMS > [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] > > ______________________________________________________________ > 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] |
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