Re: [Elecraft] Don't Shoot!
Richard, If there is any overshoot, my KPA500 hasn't complained. I have both an IC-7300 and an IC-7610. The KPA500 is teamed with the KAT500. The keying line is routed through the KAT500 and the rigs are both set for a 15ms transmit delay. I do not run an ALC line on either rig. The rig power is set to roughly 21%; adjusted slightly as necessary. Ken WA2LBI On Wed, Jun 2, 2021 at 8:10 PM Richard wrote: > Is there an RF overshoot problem using an IC-7300 with a KPA500? > > Richard - W4KBX > _ > __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Don't Shoot!
Is there an RF overshoot problem using an IC-7300 with a KPA500? Richard - W4KBX __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] T1 cable for the IC-705
We hope to get back to work on this soon. We have a prototype -- just needs some firmware. 73, Wayne N6KR > On May 5, 2021, at 12:42 PM, Don - W6CZ wrote: > > Waiting with breath like bait... ;) > > > > - > Don > W6CZ > DM07bk > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n...@elecraft.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] T1 cable for the IC-705
Me too. I’m fine with folks running QRP transceivers off 500W amps and all, but I use them at <10W, so the T1 is perfect. Other options take up too much space/weight in my backpack! Bret/N4SRN -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 with Icom 7300
Steven, I use a KPA500 (and KAT500 tuner) with both an IC-7300 and an IC-7610. Both have the transmit delay set for 15ms. The amp is keyed directly from either rig using RCA/RCA cables from the SEND jack to the amp's keying jack. I do not use a keying line buffer between the amp and either rig. The amp has a very low voltage/current keying circuit. I also do not use the ALC line. Transmit power is set at about 21%. The only other important cables are the coax from the radio to the amp and from the amp to the tuner. I also have a cable from the 7300 or 7610 tuner port to the KAT500. Your LDG tuner probably already has the cable. I don't believe the LDG tuner can interrupt the keyng line to the mp the way the KAT500 can. You will need to be careful to put the amp in standby before initiating ay tuning operation so you do not hot switch the amp or provide it with a very high SWR or no antenna connection. GL! Ken WA2LBI On Wed, Jun 2, 2021 at 5:16 PM Steven Roth wrote: > I am running an Icom 7300 with an LGD tuner. Putting together the KPA500 > kit. Can anyone with same setup give me advice on cable hookups between > radio and amp? Are there any IC 7300 settings required? Yes, I have the > manuals. > > Thanks, Steve AD4K > __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 with Icom 7300
I am running an Icom 7300 with an LGD tuner. Putting together the KPA500 kit. Can anyone with same setup give me advice on cable hookups between radio and amp? Are there any IC 7300 settings required? Yes, I have the manuals. Thanks, Steve AD4K __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s and DEMI transverter
In all honesty I haven't been on 2-meter EME for 35 years. Gear was all homebrew then. That said, I would stick with a 28 MHz i-f. You must consider image response and where it lands with respect to other services. I once saw an analysis that promoted a different i-f but I fail to remember what it was or why. Definitely avoid anything lower. I would split everything if you are ever to consider a separate HP amp and mast-mounted preamp. If you are going to worry about frequency stability I wouldn't bother with the high stability option. You can use an external source that is much better. I wouldn't necessarily opt for a GPSDO without knowing its phase noise performance, however. I put together a surplus (ebay) Morion OCXO that I've had running for about six months and it has been within 3 milliHz of 10 MHz for several months. I would suggest the low drive power input. You can always attenuate this. PTT low to TX would be my choice. Wes N7WS On 6/2/2021 6:32 AM, W8JH wrote: I am looking to add the DEMI (Q5) transverter to my K3s and have no experience with transverters other than the internal one in my KX3. In the future, I may wish to progress to 2m EME as well. Here are some choices I need to make and I would appreciate any advice: Common IF vs Split IF. I'm thinking split IF with a K3s? Common RF or Split RF. Common RF for one antenna connection? IF drive level of -20 to 0dBm vs 0dBm to +20dBm. I think the K3s transverter output is 0dBm so I'm not sure what to think here. PTT polarity low instead of high I'm thinking. High stability Local Oscillator vs. standard. I could get a custom IF and I think there is some slight advantage to a 14mHz custom but I'm guessing the 28mHz standard IF is good enough? Thanks in advance for any advice or references. - 73, Joe, W8JH K3s, KPA 500, KAT 500 and KX3 happy user. -- __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s and DEMI transverter
On 6/2/2021 7:46 AM, Mooneer Salem wrote: From what I've been able to tell, for what most people use transverters for (SSB/CW on the weak signal portions of VHF/UHF) Since the advent of WSJT-X, most weak signal work has been taken over by these modes, and for some of them, frequency stability matters. 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s and DEMI transverter
I use three Elecraft and one DEMI transverters with my K3. All split IF at 28 MHz, single antenna path for each, PTT low. I’d go with the high stability LO, especially at 432 or higher. The lower level drive works fine with the K3 and I believe the K3S transverter interface is identical in that regard. You can set it on a per transverter basis to get the drive you need. If you intend to use the same transverter on a different radio that does not provide a low level drive or a split IF, your choices may be different. One other thing to consider is how to select the active transverter if you add more than one. The Elecraft transverters have that built in, as they can read the Aux bus. For others you may need some external switching so that you only key the transverter that is selected. I use a band decoder from unified Microsystems for this. Of course if you connect only one transverter to your K3S that’s not an issue. On Wed, Jun 2, 2021 at 8:33 AM W8JH wrote: > I am looking to add the DEMI (Q5) transverter to my K3s and have no > experience with transverters other than the internal one in my KX3. In the > future, I may wish to progress to 2m EME as well. > > Here are some choices I need to make and I would appreciate any advice: > > Common IF vs Split IF. I'm thinking split IF with a K3s? > > Common RF or Split RF. Common RF for one antenna connection? > > IF drive level of -20 to 0dBm vs 0dBm to +20dBm. I think the K3s > transverter output is 0dBm so I'm not sure what to think here. > > PTT polarity low instead of high I'm thinking. > > High stability Local Oscillator vs. standard. > > I could get a custom IF and I think there is some slight advantage to a > 14mHz custom but I'm guessing the 28mHz standard IF is good enough? > > Thanks in advance for any advice or references. > > > > > > - > 73, > > Joe, W8JH > > K3s, KPA 500, KAT 500 and KX3 happy user. > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to dave.w...@gmail.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s and DEMI transverter
Hi Joe, >From what I've been able to tell, for what most people use transverters for (SSB/CW on the weak signal portions of VHF/UHF), 28MHz is perfectly okay. Personally, I like choices, so I've considered getting a 10MHz IF if I ever got deep into transverters. This would in theory allow full use of both 2 meters and 70cm with the same radio, if not some higher bands. Of course, I haven't looked into it too closely to see whether 10MHz is even workable given that there's also a 10MHz clock input on the Q5 transverters, so any thoughts on that would be good. Thanks, -Mooneer K6AQ On Wed, Jun 2, 2021 at 6:34 AM W8JH wrote: > I am looking to add the DEMI (Q5) transverter to my K3s and have no > experience with transverters other than the internal one in my KX3. In the > future, I may wish to progress to 2m EME as well. > > Here are some choices I need to make and I would appreciate any advice: > > Common IF vs Split IF. I'm thinking split IF with a K3s? > > Common RF or Split RF. Common RF for one antenna connection? > > IF drive level of -20 to 0dBm vs 0dBm to +20dBm. I think the K3s > transverter output is 0dBm so I'm not sure what to think here. > > PTT polarity low instead of high I'm thinking. > > High stability Local Oscillator vs. standard. > > I could get a custom IF and I think there is some slight advantage to a > 14mHz custom but I'm guessing the 28mHz standard IF is good enough? > > Thanks in advance for any advice or references. > > > > > > - > 73, > > Joe, W8JH > > K3s, KPA 500, KAT 500 and KX3 happy user. > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to moon...@gmail.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3s and DEMI transverter
I am looking to add the DEMI (Q5) transverter to my K3s and have no experience with transverters other than the internal one in my KX3. In the future, I may wish to progress to 2m EME as well. Here are some choices I need to make and I would appreciate any advice: Common IF vs Split IF. I'm thinking split IF with a K3s? Common RF or Split RF. Common RF for one antenna connection? IF drive level of -20 to 0dBm vs 0dBm to +20dBm. I think the K3s transverter output is 0dBm so I'm not sure what to think here. PTT polarity low instead of high I'm thinking. High stability Local Oscillator vs. standard. I could get a custom IF and I think there is some slight advantage to a 14mHz custom but I'm guessing the 28mHz standard IF is good enough? Thanks in advance for any advice or references. - 73, Joe, W8JH K3s, KPA 500, KAT 500 and KX3 happy user. -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] 2 meter PA
My sincerest thanks to everyone who responded to this query, both on list and off. I received a LOT of good recommendations and information. :-) Thanks again, everyone! 73, David - N5DCH > On Jun 1, 2021, at 9:32 AM, David Herring wrote: > > Can anyone recommend a good 2 meter PA for use with a KX3? > > I’m not looking to spend a king’s ransom, but I am leery of blindly buying an > “unknown off-shore branded” unit. > > Being paired with a KX3 it would need to be portable (or at least luggable) > and powered by 12 VDC. 30, 40, 50 watts or so would I think be quite > fine…just more than the 2 - 3 watts the KX3’s internal 2 meter module puts > out. > > Ideas, suggestions, recommendations welcomed... > > 73, > David - N5DCH > > > __ 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 Message delivered to arch...@mail-archive.com
