Re: [Elecraft] K-Line: Antenna switching
I had also looked for quite some time and finally found one that fit very well in my station and 2 radios a SO2R. It is the Array Solutions Six Pack it has been working very well for over 2 months and a lot of features so no foul ups. But the nice part is that it is so simple to install and use. 73, Fred/N0AZZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of N5GE Sent: Wednesday, October 10, 2012 12:21 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K-Line: Antenna switching I like my Elecraft KRC2 and DX Enginering 8 Pos switch. Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Tue, 9 Oct 2012 21:36:24 -0400, Jim Miller j...@jtmiller.com wrote: I'm adding a KPA500 and KAT500 to my station equipment. The only coax to the shack will be a run of LDF5-50 to a TBD remote switch, preferrably with 8 antenna ports. Knowing my limitations I'd prefer a means of decoding the K3 band outputs and controlling the remote switch automatically. An external override to select an alternate antenna (e.g. an inverted V instead of vertical for 80m). I'd like some indication of what antenna automatically (or active override) is selected as well. I've looked at several devices (top ten, dxe, ameritron, elecraft) and haven't found something that meets all requirements. Of course I could start with just a manual unit and built something myself but I'd prefer to buy a unit due to other priorities. I'm looking for both the shack box and the remote relay box as well. I've seen several relay boxes that would likely work but not yet anything for the shack. Suggestions welcome! thanks jim ab3cv __ 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 __ 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] (K3) SWR Consistent - low or high power
My theory in these cases is that it's nothing to do with bad antenna connections, but more due to the rig putting out a higher harmonic content at higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so the reading is slightly worse. 73 Tom G3OLB N3OI wrote: *One observation:* I use low power to set SWR with my TenTec manual tuner. My FT-920's SWR meter would usually shift a bit when I increased power to 100w and I would then quickly tweak it back down. With the K3's SWR meter (no ATU installed), after setting the tuner at 10w or so, the reading stays the same when power is increased to 100w. __ 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] K-Line: Antenna switching
Jim, I have an Ameritron RCS-12 conntroller driving an RCS-10L switch, and AFAICT, it meets all your requirements. I'm very pleased with it. 73, Mike NF4L On 10/9/12 9:36 PM, Jim Miller wrote: I'm adding a KPA500 and KAT500 to my station equipment. The only coax to the shack will be a run of LDF5-50 to a TBD remote switch, preferrably with 8 antenna ports. Knowing my limitations I'd prefer a means of decoding the K3 band outputs and controlling the remote switch automatically. An external override to select an alternate antenna (e.g. an inverted V instead of vertical for 80m). I'd like some indication of what antenna automatically (or active override) is selected as well. I've looked at several devices (top ten, dxe, ameritron, elecraft) and haven't found something that meets all requirements. Of course I could start with just a manual unit and built something myself but I'd prefer to buy a unit due to other priorities. I'm looking for both the shack box and the remote relay box as well. I've seen several relay boxes that would likely work but not yet anything for the shack. Suggestions welcome! thanks jim ab3cv __ 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] K-Line: Antenna switching
On 10 Oct 2012 at 4:14, Fred Smith wrote: I had also looked for quite some time and finally found one that fit very well in my station and 2 radios a SO2R. It is the Array Solutions Six Pack it has been working very well for over 2 months and a lot of features so no foul ups. But the nice part is that it is so simple to install and use. 73, Fred/N0AZZ I use the Six Pak antenna switch and love it. It has one problem, its sensitive to drive voltage for the relays, mine had to be adjusted by bending the spring mount for each relay. It wanted 13.5 volts to pull in a relay, should be 10.5, or so, I forget the exact amount, according to Array solutions. The fix is to bend the tab that the return spring is mounted to, adjusting the force needed to pull in. Once I got the spring tension correct it has worked flawlessly for several years in an SO2R setup. If you need more antenna inputs they now have an 8 input switch. 73, Gordon - N1MGO __ 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] Leftover parts after KX3 build???
Good morning Don, Thanks for the reply and the only reason alarm bells went off regarding these washers there were only 2 shipped and then seemed a little oversized and unique. So that made me wonder if they were to go somewhere on the KX3 build or not. It was not like there was 6 of them and 2 left over but just 2 came and they were never used. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Leftover-parts-after-KX3-build-tp7563903p7563917.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] (K3) SWR Consistent - low or high power
Some of this effect hqs to do with the reflected power diode. Depening upon the sense circuity, the reflected power diode may not see enough voltaqe to be fully conducting. Thus it reads less current in the reflected position and hence lower SWR that at higher powers. Also the type of diode used is important. I believe the K3 use Schotky diodes which conduct at lower voltages than say silicon diodes. Germanium diodes are even better but fragile and harder to get these days. 73 DE Brian/K3KO Tom Boucher wrote: My theory in these cases is that it's nothing to do with bad antenna connections, but more due to the rig putting out a higher harmonic content at higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so the reading is slightly worse. 73 Tom G3OLB N3OI wrote: *One observation:* I use low power to set SWR with my TenTec manual tuner. My FT-920's SWR meter would usually shift a bit when I increased power to 100w and I would then quickly tweak it back down. With the K3's SWR meter (no ATU installed), after setting the tuner at 10w or so, the reading stays the same when power is increased to 100w. __ 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] K-Line: Antenna switching
I like the Six Pack also and use one at K0PP's for SO2R and one at home. At home I added a W9XT Band Decoder and High Side Driver to automatically switch antennas on one of the ports. Haven't gotten around to adding the second side. Incidentally the band decoder is optoisolated and doesn't load the band data outputs so the decoder and the amplifier work ok together. I seem to remember some people have had problems when they added a decoder. Cheers and 73, Fred KE7X -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Smith Sent: Wednesday, October 10, 2012 3:14 AM To: li...@n5ge.com; Elecraft@mailman.qth.net Subject: Re: [Elecraft] K-Line: Antenna switching I had also looked for quite some time and finally found one that fit very well in my station and 2 radios a SO2R. It is the Array Solutions Six Pack it has been working very well for over 2 months and a lot of features so no foul ups. But the nice part is that it is so simple to install and use. 73, Fred/N0AZZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of N5GE Sent: Wednesday, October 10, 2012 12:21 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K-Line: Antenna switching I like my Elecraft KRC2 and DX Enginering 8 Pos switch. Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Tue, 9 Oct 2012 21:36:24 -0400, Jim Miller j...@jtmiller.com wrote: I'm adding a KPA500 and KAT500 to my station equipment. The only coax to the shack will be a run of LDF5-50 to a TBD remote switch, preferrably with 8 antenna ports. Knowing my limitations I'd prefer a means of decoding the K3 band outputs and controlling the remote switch automatically. An external override to select an alternate antenna (e.g. an inverted V instead of vertical for 80m). I'd like some indication of what antenna automatically (or active override) is selected as well. I've looked at several devices (top ten, dxe, ameritron, elecraft) and haven't found something that meets all requirements. Of course I could start with just a manual unit and built something myself but I'd prefer to buy a unit due to other priorities. I'm looking for both the shack box and the remote relay box as well. I've seen several relay boxes that would likely work but not yet anything for the shack. Suggestions welcome! thanks jim ab3cv __ 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 __ 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
[Elecraft] KAT500 Antenna Selection?
I notice the KAT500 has three antenna ports. Is it programmable to auto-select the port from band data? 73 jim ab3cv __ 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] KAT500 Antenna Selection?
As per information given by Elecraft and the field testers: YES. 73, Olli - DH8BQA - Original Message - From: Jim Miller j...@jtmiller.com To: Elecraft Reflector elecraft@mailman.qth.net Sent: Wednesday, October 10, 2012 2:53 PM Subject: [Elecraft] KAT500 Antenna Selection? I notice the KAT500 has three antenna ports. Is it programmable to auto-select the port from band data? 73 jim ab3cv __ 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 - E-Mail ist virenfrei. Von AVG uberpruft - www.avg.de Version: 2012.0.2221 / Virendatenbank: 2441/5321 - Ausgabedatum: 09.10.2012 __ 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] KAT500 Antenna Selection?
On 10/10/2012 5:53 AM, Jim Miller wrote: I notice the KAT500 has three antenna ports. Is it programmable to auto-select the port from band data? Yes. And it doesn't even NEED band data -- like the KPA500, it auto-detects the transmiitted frequency, recalls settings for that frequency, and switches between antennas if it has been programmed to do so. I've been beta-testing one for about a month. The only connections between my K3, KPA500, and KAT500 are coax and PTT, and they work together flawlessly. When I do contesting, I use the K3 and KAT500 with my 30 year old Ten Tec Titan tube amp at legal limit power. Works fine that way too. A band data connection allows the KAT500 to switch when you change bands on the K3, before you transmit. That saves a few hundred msec. So far, I've not seen the need for it. 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
Re: [Elecraft] KAT500 Antenna Selection?
A band data connection allows the KAT500 to switch when you change bands on the K3, before you transmit. That saves a few hundred msec. So far, I've not seen the need for it. A band data connection allows the KAT500 to switch *before* RF is applied rather than hot switching *after* RF begins. I would be very concerned about the service life of the relays when using RF switching at high power - particularly in a constant power mode like RTTY. Most relays have significantly higher carry ratings than switch ratings and will not survive repeated switching at full power. While the KAT500 may be fast enough to switch during the ramp up time at the start of a transmission, that is still pushing the envelope - particularly if one is using it with a legal limit amplifier. 73, ... Joe, W4TV On 10/10/2012 10:41 AM, Jim Brown wrote: On 10/10/2012 5:53 AM, Jim Miller wrote: I notice the KAT500 has three antenna ports. Is it programmable to auto-select the port from band data? Yes. And it doesn't even NEED band data -- like the KPA500, it auto-detects the transmiitted frequency, recalls settings for that frequency, and switches between antennas if it has been programmed to do so. I've been beta-testing one for about a month. The only connections between my K3, KPA500, and KAT500 are coax and PTT, and they work together flawlessly. When I do contesting, I use the K3 and KAT500 with my 30 year old Ten Tec Titan tube amp at legal limit power. Works fine that way too. A band data connection allows the KAT500 to switch when you change bands on the K3, before you transmit. That saves a few hundred msec. So far, I've not seen the need for it. 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 __ 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] Calibration of KX3
Just a few questions 1. Can the calibration be done in any order? 2. I am doing Reference frequency calibration ( using my XG2), transmit bias calibration, transmit gain (using Elecraft utility) not doing KXFL3 as it was done at factory. Is there any other tests or calibration that has to be done? 3. Under reference frequency calibration on page 31 using the automatic method I don't see it mentioned to unlock the REF CAL setting. Or for automatic does this not have to be unlocked? Thanks for all your time Mike VE3WDM __ 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] KAT500 Antenna Selection?
On 10/10/2012 7:59 AM, Joe Subich, W4TV wrote: Most relays have significantly higher carry ratings than switch ratings and will not survive repeated switching at full power. While the KAT500 may be fast enough to switch during the ramp up time at the start of a transmission, that is still pushing the envelope - particularly if one is using it with a legal limit amplifier. This is prevented by the requirement that PTT be looped through the KAT500. When the KAT500 is tuning (or switching), PTT to the amp is interrupted. The only condition under which this does not work well is with an amp like the Titan, whose 30 year old logic won't allow interrupting PTT to stop TX because that would hot-switch the T/R relay. When using that amp, I transmit a dit or two (or tap the mic) to let the KAT detect frequency so that it can switch bands before I transmit for real. 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
[Elecraft] KX3 suggestion
Among a few other small would like to see items. How about a VFO lock. I have, what my wife describes as, big nubs. I tend to bump the VFO often. A minor fix has been tightening the VFO A friction. But a lock would be great while filtering out some QSO's. Mike Mardis __ 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] KX3 hand mic's
I'm looking for any user experienced hand mic's for my KX3. Suggestions? Mike Mardis __ 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] DX Doubler For Sale
I have for sale a DX Doubler with three cables, one K-3 homebrew, one K-3 modified from ICOM, and one ICOM. $135 including shipping by priority mail. Jim Spaulding W0UO w...@arrl.net 817 448 8024 (home) __ 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] KX3 suggestion
VFO LOCK is already implemented. Just hold down the RATE button for about 5 seconds and you'll hear the beep and see the padlock icon appear on the display. Moving the VFO knob then has no effect. To remove VFO LOCK, just tap the RATE button. Hope this helps. 73, BILL GERTH, W4RK Jefferson City, MO First Licensed 1954 CWOPS #459 KX3 (S/N 112) On Oct 10, 2012, at 11:23 AM, Mike Mardis wrote: Among a few other small would like to see items. How about a VFO lock. I have, what my wife describes as, big nubs. I tend to bump the VFO often. A minor fix has been tightening the VFO A friction. But a lock would be great while filtering out some QSO's. Mike Mardis __ 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] KX3 suggestion
Hi Mike, Hold the KHZ switch for about 3 seconds. The VFO A lock symbol will come on. For more details see page 11 of the KX3 Owner's Manual. 73, Wayne N6KR On Oct 10, 2012, at 9:23 AM, Mike Mardis wrote: Among a few other small would like to see items. How about a VFO lock. I have, what my wife describes as, big nubs. I tend to bump the VFO often. A minor fix has been tightening the VFO A friction. But a lock would be great while filtering out some QSO's. Mike Mardis __ 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] (K3) SWR Consistent - low or high power
There are several causes for varying SWR readings with power level: 1) Poor diode linearity -- diodes are less sensitive at low levels, and reflected power may be very low at QRP levels. This effect shows as a low indicated SWR at low power levels, which then becomes more accurate past a given power level. 2) Harmonics -- as described below by G3OLB. 3) Parasitic oscillations -- a misadjusted amplifier can oscillate a few hundred kHz from the operating frequency, where the antenna is not resonant (or a tuner is not tuned). VHF parastics are also possible. Any significant off-frequency output can cause a high SWR reading. Needless to say, this is very serious and must be corrected. 4) Common-mode current -- antenna currents on the outside of a coax feedline, caused by feeding a dipole (etc.) without a balun, or by coax running parallel to antenna wires even with a balun, can upset SWR readings. This effect changes with the feedline length as well as the power. SWR indicators may vary in their susceptibility to this effect. On 10/10/2012 2:20 AM, Tom Boucher wrote: My theory in these cases is that it's nothing to do with bad antenna connections, but more due to the rig putting out a higher harmonic content at higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so the reading is slightly worse. 73 Tom G3OLB N3OI wrote: *One observation:* I use low power to set SWR with my TenTec manual tuner. My FT-920's SWR meter would usually shift a bit when I increased power to 100w and I would then quickly tweak it back down. With the K3's SWR meter (no ATU installed), after setting the tuner at 10w or so, the reading stays the same when power is increased to 100w. -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ 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] New Call sign for Lew ex-K6LMP
Folks, do -not- criticize the appropriateness of other postings on the list. Criticism of this type is specifically outside of the list guidelines and only adds to list clutter and consternation. Also, please keep ALL postings friendly as if you were talking face to face with close friends in your home. We are all here to enjoy the hobby. There is -never- any need harshly criticize, to use ALL CAPS, shouting with exclamation points (!) or to use improper or dismissive language. If you have a problem with a thread, email the moderator. The delete key also works wonders. ;-) Let's go ahead and end -all- of this thread at this time in the interest of improving list SNR. 73, Eric WA6HHQ List moderator, among other duties.. Eric --- www.elecraft.com On 10/9/2012 8:44 PM, Tom Meier wrote: What in the world could this posting have to do with Elecraft equipment. Please end the thread and keep the garbage out of here Tom, K7ZZ On Tue, Oct 9, 2012 at 7:08 PM, Phil Hystad phys...@mac.com wrote: N6LEW is also very clear in CW. I don't see any confusing letters such as in the case of the suffix: ESE (but, when done by a good fist it is clear of course). __ 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] KX3 suggestion
If you hold the Rate/kHz button for a few seconds, it will lock the VFO. 73, Matt VK2ACL On 11/10/2012, at 3:23 AM, Mike Mardis mikejmar...@aol.com wrote: Among a few other small would like to see items. How about a VFO lock. I have, what my wife describes as, big nubs. I tend to bump the VFO often. A minor fix has been tightening the VFO A friction. But a lock would be great while filtering out some QSO's. Mike Mardis __ 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] K-Line: Antenna switching
I use a Band Decoder Card from Unified Microsystems to drive my antenna relais. http://www.unifiedmicro.com/decoder.html 73 de Jan SM5FQQ - Elecraft K3 #2054, Butternut HF9V -- View this message in context: http://elecraft.365791.n2.nabble.com/K-Line-Antenna-switching-tp7563906p7563926.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] KAT500 Antenna Selection?
This is prevented by the requirement that PTT be looped through the KAT500. When the KAT500 is tuning (or switching), PTT to the amp is interrupted. This only moves the hot switching from the KAT500 to the amplifier. Whilst the KPA500 can handle hot switching due to its PIN diode T/R system (we won't talk about the clicks that result) other amplifiers - particularly those with vacuum relays on the output - will certainly suffer a catastrophic failure (damaged relays and/or flashover due to the transient no load condition) if asked to hot switch on a regular basis. 73, ... Joe, W4TV On 10/10/2012 11:33 AM, Jim Brown wrote: On 10/10/2012 7:59 AM, Joe Subich, W4TV wrote: Most relays have significantly higher carry ratings than switch ratings and will not survive repeated switching at full power. While the KAT500 may be fast enough to switch during the ramp up time at the start of a transmission, that is still pushing the envelope - particularly if one is using it with a legal limit amplifier. This is prevented by the requirement that PTT be looped through the KAT500. When the KAT500 is tuning (or switching), PTT to the amp is interrupted. The only condition under which this does not work well is with an amp like the Titan, whose 30 year old logic won't allow interrupting PTT to stop TX because that would hot-switch the T/R relay. When using that amp, I transmit a dit or two (or tap the mic) to let the KAT detect frequency so that it can switch bands before I transmit for real. 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 __ 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] K3 Alpha 77SX
Anyone using a 77SX or 77DX with their K3 know of any issues I need to address? Thanks, Gary KA1J __ 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] hEADPHONE'S RECEIVE LEVEL?
Hi Jim I dont believe that there is a menu item for separate level control for the headphones relative to the speaker volume. to adjust the transmit monitor level for sending either CW or phone hold in the power control knob for half a second and it will now adjust monitor level tap it to return to its normal operation. note the Monitor label in yellow under that contol On 10/10/2012 3:08 PM, Jim Harris wrote: *Good afternoon, Friends.* ** *I would like to turn down the volumn in my headset so when I send CW or when I change bands. I know there must be a Menu setting within my K3 to do this but I can't locate it. I have the KE7X Manual, my Owners Manual, my Assembly Manual.* ** *Can someone please direct me to the setting so I can turn the level down to a more comfortable listening level in my Headphones.* ** *Thanks for any help you'll can give.* ** *Best 73.* *Jim.* *WA4NTM* *K3 - S/N 2802* __ 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] KAT500 Antenna Selection?
*Ollie, Correct. I might add the advantage of using AUXBUS on the KAT500 (for me at least) is on receive, changing bands to 'check' another band, there is no need to Tx a DAH to effect a change from say ANT1 to ANT2 if that is the antenna assigned to that band. Without AUXBUS connected one has to TX some RF to cause an antenna change. Convenience! (but as noted by Jim, not essential) YMMV * On 10 October 2012 22:58, Oliver Dröse dro...@necg.de wrote: As per information given by Elecraft and the field testers: YES. 73, Olli - DH8BQA - Original Message - From: Jim Miller j...@jtmiller.com To: Elecraft Reflector elecraft@mailman.qth.net Sent: Wednesday, October 10, 2012 2:53 PM Subject: [Elecraft] KAT500 Antenna Selection? I notice the KAT500 has three antenna ports. Is it programmable to auto-select the port from band data? 73 jim ab3cv __ 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 - E-Mail ist virenfrei. Von AVG uberpruft - www.avg.de Version: 2012.0.2221 / Virendatenbank: 2441/5321 - Ausgabedatum: 09.10.2012 __ 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 -- *Gary* *Start the day off slow, then taper off.* K3 #679 KPA500FT #18 KAT500FT 007 P3 #1629 __ 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] KX3 and a seaside vertical
Some here may be interested in how QRP can sound when coupled with an efficient antenna. Here's an audio file of how Dom sounded in SE TX as he operated as KH8/M1KTA from American Samoa with his KX3: http://www.ae5x.com/blog/2012/10/10/m1ktakh8-qrp-with-kx3/ John AE5X __ 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] K2/10 for sale
I am selling my beautiful K2/10. Has the following installed: KSB2, KNB2, KAF2, KAT2. Working perfectly with no issues and complete with original Elecraft construction/operation manual. Currently wired for Kenwood compatible microphone. I was using a Kenwood MC43s with it, but need to hold on to the mic for my TS-2000. It has never been around smoke! Asking $650 shipped in the U.S. and I accept PayPal. You can pick it up locally in San Diego, CA. Thanks. Joe AF6NI __ 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] KAT500 Antenna Selection?
On 10/10/2012 12:15 PM, Joe Subich, W4TV wrote: This only moves the hot switching from the KAT500 to the amplifier. Not if the operator isn't stupid. A smart operator will do as I have described -- a short burst of RF to let the KAT determine operating frequency and recall settings. And with an amp like the Titan, simply put it in standby to let the KAT tune if needed. 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
[Elecraft] KX3
Hi all, Ref: http://www.ae5x.com/blog/2012/10/10/m1ktakh8-qrp-with-kx3/ My KX3 Serial number is 1082 I'm qrv for one more night 11th October 08:00-18:00 UTC (starting 10 ish hours from right now) from beach on north shore of American Samoa with a perfect NE orientation, 800m cliff 200m behind beach and 600m coral reef shelf in front so lovely salt water for 10 wavelength out so really good take off for 15m and 20m vertical dipoles right on the waters edge. Antennas are speaker wire cut to resonance fed with RG58 hung on 10m fishing poles with bottom element 1m above the wet sand all in all about $50 worth of antenna so anyone can make one. No B.S. I am running the KX3 barefoot and it is only set at 5W as no mains power for any supply. If you fancy a KX3 2 way qso please try and find me... On 15m I will be tx on 21.015 or 21.055, 20m 14.015 or 14.055 on either working simplex or up2 if there is a pile up. My CW is SLOWER than the average DXer 12-16wpm so shouldn't have a problem trying to copy me. I tend to ignore cw sent faster as I cannot copy it. I was working US stations (all the way to East Coast) about 15:00UTC and after that this morning so just before to just after local runrise. 72 Dom KH8/M1KTA __ 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] KAT500 Antenna Selection?
Not if the operator isn't stupid. ... or tired, not thinking clearly, in a hurry to work a new one, changing the SO2R radio while concentrating on the run rig, or in a hurry to work a multiplier on a new band, etc. It only takes one time to forget to tune the KAT500 - or have something happen to a normally well behaved antenna - for the KAT500 delay RTTY to a legal limit amp by 1/4 second so the vacuum relay switches at full power and end up with heap of trouble. I'm not saying the RF switching/tuning isn't fine in its place but I would certainly want to minimize the chances of a failure by using the band data. If it were my design, the pass through PTT would not activate until the input PTT had cycled - that is if the KAT500 had to take the amplifier off line to retune, the PTT would not activate until the input PTT had cleared and been asserted again. 73, ... Joe, W4TV On 10/10/2012 4:56 PM, Jim Brown wrote: On 10/10/2012 12:15 PM, Joe Subich, W4TV wrote: This only moves the hot switching from the KAT500 to the amplifier. Not if the operator isn't stupid. A smart operator will do as I have described -- a short burst of RF to let the KAT determine operating frequency and recall settings. And with an amp like the Titan, simply put it in standby to let the KAT tune if needed. 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 __ 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] hEADPHONE'S RECEIVE LEVEL?
*Howdy, Folks.* * * *Thanks for correcting the error of ways. The MON adjustment did the trick. * * * *Thanks for all that replied. I appreciate each and every one of the responses.* * * *Best 73!* *Jim* *WA4NTM* * * On Wed, Oct 10, 2012 at 3:14 PM, david Moes dm...@nexicom.net wrote: Hi Jim I dont believe that there is a menu item for separate level control for the headphones relative to the speaker volume. to adjust the transmit monitor level for sending either CW or phone hold in the power control knob for half a second and it will now adjust monitor level tap it to return to its normal operation. note the Monitor label in yellow under that contol On 10/10/2012 3:08 PM, Jim Harris wrote: *Good afternoon, Friends.* ** *I would like to turn down the volumn in my headset so when I send CW or when I change bands. I know there must be a Menu setting within my K3 to do this but I can't locate it. I have the KE7X Manual, my Owners Manual, my Assembly Manual.* ** *Can someone please direct me to the setting so I can turn the level down to a more comfortable listening level in my Headphones.* ** *Thanks for any help you'll can give.* ** *Best 73.* *Jim.* *WA4NTM* *K3 - S/N 2802* __ 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 __ 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] KAT500 Antenna Selection?
In my opinion, antenna switching should either fully automatic or fully manual. I've had both, plus a mix. I've never had a problem when it fully one way or the other. But for various reasons as stated in Joe's, it created problems, popped diodes, what have you. The K3/KAT500/KPA500 can work either way. DON'T mix the methods!! You'll surely be saying OOPS(Or worst) sometime in the future. That OOPS can be expensive!!! Larry/K2GN - http://k2gn.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Wednesday, October 10, 2012 5:14 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 Antenna Selection? Not if the operator isn't stupid. ... or tired, not thinking clearly, in a hurry to work a new one, changing the SO2R radio while concentrating on the run rig, or in a hurry to work a multiplier on a new band, etc. It only takes one time to forget to tune the KAT500 - or have something happen to a normally well behaved antenna - for the KAT500 delay RTTY to a legal limit amp by 1/4 second so the vacuum relay switches at full power and end up with heap of trouble. I'm not saying the RF switching/tuning isn't fine in its place but I would certainly want to minimize the chances of a failure by using the band data. If it were my design, the pass through PTT would not activate until the input PTT had cycled - that is if the KAT500 had to take the amplifier off line to retune, the PTT would not activate until the input PTT had cleared and been asserted again. 73, ... Joe, W4TV On 10/10/2012 4:56 PM, Jim Brown wrote: On 10/10/2012 12:15 PM, Joe Subich, W4TV wrote: This only moves the hot switching from the KAT500 to the amplifier. Not if the operator isn't stupid. A smart operator will do as I have described -- a short burst of RF to let the KAT determine operating frequency and recall settings. And with an amp like the Titan, simply put it in standby to let the KAT tune if needed. 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 __ 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] K3 Alpha 77SX
I use an Alpha 87A without any issues with my K3's if that helps any. You could call RF Concepts and ask about any known issues with that combo if unanswered here. 73, Fred/N0AZZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Smith Sent: Wednesday, October 10, 2012 2:41 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Alpha 77SX Anyone using a 77SX or 77DX with their K3 know of any issues I need to address? Thanks, Gary KA1J __ 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 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5320 - Release Date: 10/09/12 __ 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] KX3 hand mic's
Mike, I have the MH3 on my KX3. The reports I have gotten are all positive. I haven't done a thing with the TX equalizer, but I did crank up the compressor a bit. With 10 watts PEP, I can get across Europe. 73, Barry K3NDM On 10/10/2012 12:25 PM, Mike Mardis wrote: I'm looking for any user experienced hand mic's for my KX3. Suggestions? Mike Mardis __ 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
[Elecraft] DX Doubler Sold
The DX Doubler has been sold. Jim Spaulding W0UO w...@arrl.net 817 448 8024 (home) __ 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] (K3) SWR Consistent - low or high power
It's pretty unlikely you'd see harmonic content on any kind of broadband power sensor like a SWR meter. Even if the transmitter was really bad and had harmonic levels only 40 dB down, this would mean for 100 Watts output you would be getting 10 mW in harmonic energy, which wouldn't wiggle anybody's meter very much. And if the total harmonic power at 40 dB down was just equal to the reflected power from your antenna mismatch, this would mean the antenna would have a VSWR of 1.07. My money's on diode nonlinearities at low power levels. 73... Randy, W8FN On 10/10/2012 04:20, Tom Boucher wrote: My theory in these cases is that it's nothing to do with bad antenna connections, but more due to the rig putting out a higher harmonic content at higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so the reading is slightly worse. __ 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] KX3
Hi Dominic - Sounds like you're having a lot of fun out there in paradise. Good dx too. My KX3 is about a month away, otherwise I'd really have enjoyed a KX3 to KX3, island to island contact. Have fun and take care, 73 John VK7JB __ 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] (K3) SWR Consistent - low or high power
Randy, What you say is true only if working into a load that is not frequency selective - like a dummy load. If working into an antenna, that will be frequency selective and any harmonics will increase the SWR indication. 73, Don W3FPR On 10/10/2012 8:17 PM, Randy Farmer wrote: It's pretty unlikely you'd see harmonic content on any kind of broadband power sensor like a SWR meter. Even if the transmitter was really bad and had harmonic levels only 40 dB down, this would mean for 100 Watts output you would be getting 10 mW in harmonic energy, which wouldn't wiggle anybody's meter very much. And if the total harmonic power at 40 dB down was just equal to the reflected power from your antenna mismatch, this would mean the antenna would have a VSWR of 1.07. My money's on diode nonlinearities at low power levels. __ 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] (K3) SWR Consistent - low or high power
WOW Bob K3DJC On Wed, 10 Oct 2012 20:32:58 -0400 Don Wilhelm w3...@embarqmail.com writes: Randy, What you say is true only if working into a load that is not frequency selective - like a dummy load. If working into an antenna, that will be frequency selective and any harmonics will increase the SWR indication. 73, Don W3FPR On 10/10/2012 8:17 PM, Randy Farmer wrote: It's pretty unlikely you'd see harmonic content on any kind of broadband power sensor like a SWR meter. Even if the transmitter was really bad and had harmonic levels only 40 dB down, this would mean for 100 Watts output you would be getting 10 mW in harmonic energy, which wouldn't wiggle anybody's meter very much. And if the total harmonic power at 40 dB down was just equal to the reflected power from your antenna mismatch, this would mean the antenna would have a VSWR of 1.07. My money's on diode nonlinearities at low power levels. __ 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
[Elecraft] [KX3] Serial No. 2148
Serial 2148 of KX3 arrived by UPS today. Unboxed (just outer box) and already took errata sheet to update assembly manual. But, still have to do inventory. I am curious on whether I got the battery charger and real time clock. I had heard they were back ordered. It is listed on my order sheet but no notice of anything on backorder so I guess I have the battery charger and real-time clock option. Yes, got to get to the inventory. Unfortunately, that will be tomorrow night. 73, phil, K7PEH __ 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] (K3) SWR Consistent - low or high power
My example assumes a worst case of 0 dB return loss at all harmonic frequencies (i.e., the harmonic energy is all reflected). Any radiation or other loss mechanism at the harmonic frequencies will just decrease their reflected power and lessen their contribution to the total broadband reflected power seen by the meter. The real situation is even more complicated, as the directivity of the wattmeter coupler as a function of frequency must also be taken into account to determine the actual indicated VSWR. Also, I should have said in the original post ... your antenna would have a VSWR of 1.07 AT THE FUNDAMENTAL FREQUENCY. 73... Randy, W8FN On 10/10/2012 19:32, Don Wilhelm wrote: Randy, What you say is true only if working into a load that is not frequency selective - like a dummy load. If working into an antenna, that will be frequency selective and any harmonics will increase the SWR indication. 73, Don W3FPR __ 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] K3 internal 144 MHz xverter separate receive antenna
K144XV uses it own dedicated ant input (ANT3), so not sharable with HF bands. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-internal-144-MHz-xverter-separate-receive-antenna-tp7561259p7563958.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
