Re: [Elecraft] OT - Power and my earlier post
Yes and when running PSK-31 if you don't get IMD reports of between -21dB and/or more like -29dB then most likely something at your station needs improvement. Usually overdrive either in the audio system or RF path is a contributing factor. ALC action is often one culprit. Some radios leave the SP or EQ circuits in the path. They should be OFF or bypassed. Bob, K4TAX Sent from my iPhone > On Oct 17, 2018, at 9:35 PM, Walter Underwood wrote: > > Specifically about PSK31, that encoding needs a very linear transmit system. > The 25 W recommendation keeps the signal and the peaks in the linear region > of most 100 W amps. Modes that do not use phase shift keying on a single > carrier might not have the same linearity requirements. > > A clean 25 W PSK31 transmission might be heard better than a distorted 100 W > PSK31 transmission. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Oct 17, 2018, at 6:52 PM, Jim Brown wrote: >> >> On 10/17/2018 6:36 PM, Bob McGraw K4TAX wrote: >>> At the same time, many of my contacts are made with 50 watts or less. >> >> Yup. I mostly use FT8, JT65, and MSK144 on 6M and 160M. I generally run as >> much power as I can on 6M, and on 160M to work EU or AF. OTOH, I'm still >> trying to finish 160M WAS QRP (need VT and SC), and recently worked the KH1 >> expedition on 160 with 5W using FT8. They were specifically using FT8 trying >> to put some EU stations in the log. I've since learned that AA7JV was the op. >> >> 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 wun...@wunderwood.org > > __ > 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 rmcg...@blomand.net > __ 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] OT - Power and my earlier post
Specifically about PSK31, that encoding needs a very linear transmit system. The 25 W recommendation keeps the signal and the peaks in the linear region of most 100 W amps. Modes that do not use phase shift keying on a single carrier might not have the same linearity requirements. A clean 25 W PSK31 transmission might be heard better than a distorted 100 W PSK31 transmission. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 17, 2018, at 6:52 PM, Jim Brown wrote: > > On 10/17/2018 6:36 PM, Bob McGraw K4TAX wrote: >> At the same time, many of my contacts are made with 50 watts or less. > > Yup. I mostly use FT8, JT65, and MSK144 on 6M and 160M. I generally run as > much power as I can on 6M, and on 160M to work EU or AF. OTOH, I'm still > trying to finish 160M WAS QRP (need VT and SC), and recently worked the KH1 > expedition on 160 with 5W using FT8. They were specifically using FT8 trying > to put some EU stations in the log. I've since learned that AA7JV was the op. > > 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 wun...@wunderwood.org __ 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] KPA1500 + AX1?
Hey, I seem to recall something you said a few years ago about accidentally hitting one of your T1 QRP autotuners with 100 watts for a short period and it survived. That being said, not sure I'd want to be in the same county with an AX1 connected to a KPA1500 putting out full power, LOL! The meltdown would be horrendous though the amp would most likely survive. W0EB > On Oct 17, 2018, at 8:58 PM, Wayne Burdick wrote: > > N! > > Just joking. Emphasizing the very broad nature of our product line. > Frightening Eric, as I tend to do each year around Pacificon/Halloween. > > But seriously: Now that some AX1s have been shipped, I'd love to hear what > everyone's working on their forays into the wild. > > 73, > Wayne > N6KR > > __ > 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 w...@cox.net __ 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] KPA1500 + AX1?
N! Just joking. Emphasizing the very broad nature of our product line. Frightening Eric, as I tend to do each year around Pacificon/Halloween. But seriously: Now that some AX1s have been shipped, I'd love to hear what everyone's working on their forays into the wild. 73, Wayne N6KR __ 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] OT - Power and my earlier post
On 10/17/2018 6:36 PM, Bob McGraw K4TAX wrote: At the same time, many of my contacts are made with 50 watts or less. Yup. I mostly use FT8, JT65, and MSK144 on 6M and 160M. I generally run as much power as I can on 6M, and on 160M to work EU or AF. OTOH, I'm still trying to finish 160M WAS QRP (need VT and SC), and recently worked the KH1 expedition on 160 with 5W using FT8. They were specifically using FT8 trying to put some EU stations in the log. I've since learned that AA7JV was the op. 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] Elecraft 20th Anniversary
The Safari-4 and Koala are one-of-a-kind. They're in my closet :) Wayne N6KR > On Oct 15, 2018, at 8:15 AM, Petr, OK1RP/M0SIS wrote: > > Congrats for your Safari 4 and Koala rigs in collection if you have them! > SST should not be big problem to find some day... > > Petr > > __ 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] KPA1500 Remote Software
Ah of course, stupid me. I was expecting it with the KPA1500 soft/firmware. Thank you. Rick NHC PS Now to tell Norton to ignore it. On 10/17/2018 11:02 AM, Richard Thorne wrote: I use Firefox and I was able to get to 1.22 From the main web site: - click on Firmware & S/W - click on Logging and Remote Control Software for the ... - scroll down to KPA1500, KPA500, KAT500 Remote Software Rich - N5ZC On 10/17/2018 12:43 PM, Rick WA6NHC wrote: I'm reading in the Elecraft newsletter that the KPA1500 remote software v1.22 is available now. I'm not seeing any links. Is Firefox being stupid again with cache or is it not there? 73, Rick nhc __ 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 rtho...@rthorne.net __ 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] OT - Power and my earlier post
Wes, Ed, et al; In my past, having worked EME on 2M, 70cm, and 23cm, I understand path loss, antenna gain, feed line loss, NF on the mast mounted preamps, amp power to legal limit, weak signals, and etc. Now with that said, I'm no different than anyone trying to work a new one for their DXCC or a rare DXpedition, a new state or country or grid square. What ever power it takes is the rule to be applied. I don't view FT8 as a low power mode but it is a weak signal mode. Likewise for PSK, JT9 and JT65. At the same time, many of my contacts are made with 50 watts or less. I don't run RTTY but I do enjoy a rag chew QSO on SSB or CW. There again, what ever power it takes to make reliable contact is the rule. I try to be a gentleman with regard to frequency usage, I consider other stations on adjacent frequencies, and use the power necessary to make a specific contact, based on my antennas, band conditions and the strength of the station I'm trying to work. I work 160M through 6M with 3 antennas. And yes, the 160M antenna is a 1/2 wave center fed wire with balanced feed line. That antenna works very nicely using the KAT500 and a nice Balun Designs 1:1 balun sitting on top of the tuner. With the 4 ele 6M yagi at the top of the tower and another wire antenna for a total of 3 antennas, I can work any frequency, any band with up to 500 watts from the KPA500 into the feed lines. I don't consider any of my antennas to be compromises, but typical ham antennas, and I am not limited by space or deed restrictions either. Yes, I'm very aware that two way contacts can be made with 10 mW or less...under the right conditions. But what if every ham world wide were limited to 10mW or less. I really don't want to think about it. On the other hand, I've made a 2 way CW contact using a 2mW green laser. The path was less than 1/2 mile. Ham radio is a hobby and I've enjoyed it for the past 59 years. I plan to enjoy it for a few more years as well, as I purchased real estate to better facilitate my hobby. There is nothing like elevation, being 500 ft above average terrain out to 35 miles. Makes for nice ground gain on moon rise and moon set as well. My point in stating I run 400 watts on digital modes is in reference to how the KPA500 performs and the fact it emits audible cracks and pops. If I ran 400 watts on RTTY then the issue of power would not be of concern for the general ham public. But for digital, the mention of that power level seems to raise the hair on ones neck. No harm in asking fellows. I do understand and each to his own objectives. 73 Bob, K4TAX On 10/17/2018 5:13 PM, Wes Stewart wrote: Ed, Not picking on you personally either but I fail to understand this attitude that because some digital mode or another can make QSOs with 10 mW on some path, everyone else should run only10 mW. I consider my K3S + KPA500 to be a 500W transceiver (with push buttons for selecting bands) and that's the way I run it. Often, especially when I'm beating myself up on 160, I wish for more power. When some of my DX club buddies tease me about running QRP should I ask them to lower their power so we have parity? Wes N7WS ps: When I ran 2-meter EME 30 years ago we actually heard the signals by ear. On 10/17/2018 1:34 PM, Edward R Cole wrote: Bob, A question about your statement that you run 400w in digital modes (assuming you mean FT8, etc. and not RTTY). That seems pretty extreme. I pretty much ignore HF usage as I am not on HF very much (primarily an eme'er on 6m+). But back at the beginnings of psk-31 I built a HB interface* for my FT-847 and did a bit of 14.070 operating (with a dipole). I was recommended to not exceeding 25w (or 25% full power). Everyone seemed to do quite well on psk-31 with low power and some ran at QRP (<5w). I do not get why I hear of running high power digital when 10% would communicate easily. You may remonstrate me for running 2m-eme at 1500w on JT-65 but the path loss on 2m-eme is 254 dB+ and contacts are made over a half-million mile path. Certainly not encountered by terrestrial HF users. Not picking on you personally, but you made the statement so figure maybe would reply. Just curious. 73, Ed - KL7UW * that I/F later was used for JT-65 on eme 15 years ago. Now use my K3 directly connected. Date: Tue, 16 Oct 2018 16:59:15 -0500 From: Bob McGraw K4TAX To: "Dauer, Edward" Cc: "elecraft@mailman.qth.net" Subject: Re: [Elecraft] KPA500 Clicks & Pops Message-ID: Content-Type: text/plain; charset=us-ascii I do run 400 watts or so on digital modes. Issues are not really noted on SSB or CW modes. I've set the Fan Ctr to 2 and 3 and still noted the issue Was recently showing my K Line to some hams friends. They commented rather negatively on the point. Bob, K4TAX 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubus...@gmail.com
[Elecraft] DISTURBING THE HALLOWEEN IONOSPHERE
While we’re Frankenaround here, a reminder that two K3s will again be emanating ghostly signals Halloween night from a desolate farmhouse near Frankenstein, Missouri, beginning 1900Z on CW and SSB. Brought to you by the witches and warlocks of Mid-MO ARC of Jefferson City for over 25 years from the only incorporated “Frankenstein” in America, W0O will be spotted on RBN and other networks. See QRZ.com for details. 73, Kent Trimble, K9ZTV Mid-MO ARC Special Event Coordinator > On Oct 17, 2018, at 7:22 PM, Wayne Burdick wrote: > > One of our major goals for the AX line in general was to avoid > Frankenhardware.* > > 73, > Wayne > N6KR > > * But thank you for coining a new word that’s appropriate for the Halloween > season. > __ 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] Talk At Pacificon -- Transmitting Chokes for 630M
The talk is Saturday morning at 11am. For those out of range of Pacificon, slides will be on my website next week. 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] Announcing the Elecraft AX1 whip antenna and accessories
Hi Rich, The AXT1 tripod adapter has a threaded, stainless steel 1/4-20 PEM nut. So you can attach it directly to a standard tripod. One of our major goals for the AX line in general was to avoid Frankenhardware.* 73, Wayne N6KR * But thank you for coining a new word that’s appropriate for the Halloween season. http://www.elecraft.com > On Oct 17, 2018, at 5:12 PM, rich hurd WC3T wrote: > > Hi Wayne, > > A couple more details on the AXT1 tripod adapter, if you would; > > From the illustration, it appears that this adapter has the BNC bulkhead > connector for the AX-1, that seems plain enough; but there's no spec for how > it is secured to the tripod other than the 1/4-20 thread spec. Is the other > side of the adapter a female 1/4-20 connector, requiring only screwing it to > the male (as if you were attaching a camera,) or is it simply a through > bushing requiring some other means of securing it? I would hate to order > the AXT1 only to find out I now have to run to the hardware store to cobble > together some sort of Franken-mount to make it work. > > Thanks! > > >> On Wed, Oct 17, 2018 at 2:03 PM Wayne Burdick wrote: >> Hi gang, >> >> Our new AX1 antenna has to be just about the worst-kept secret in Elecraft >> history. We've been tinkering with it for over a year, going on ultralight >> field outings and giving hands-on demos of the prototypes at hamfests. >> (Thanks for all of your enthusiastic input!) >> >> We're happy to announce that the AX1 is now an official product. You can >> find full details and ordering information here: >> >> http://www.elecraft.com/AX1/AX1.htm >> >> Executive summary: >> >> The AX1 is an ultraportable multi-band whip that disassembles into two 6" >> (15 cm) pieces so it can go anywhere and be deployed rapidly. It's resonant >> on 20 meters in one switch position, while the other is ideal for efficient >> matching on 17 and 15 meters with the aid of an ATU (automatic antenna >> tuner). In this sense the AX1 is the perfect companion to the KX2 and KX3, >> which both have wide-range internal ATU options. >> >> The AX1 was designed specifically to facilitate pedestrian mobile and >> ultralight hiking/backpacking. It can also serve as a convenient backup for >> full-sized antennas. It can be deployed in seconds, and when used with a >> KX2, puts the world's only all-band, all-mode, 10 watt HF "HT" in the palm >> of your hand. >> >> In addition to the antenna itself, we've created two new accessories. >> >> First there's the AXB1 whip bipod, which can be used for table-top operation >> with any lightweight whip antenna. The AXB1 is supplied with a right-angle >> BNC adapter, and has adjustable legs to keep the whip from rotating in light >> to moderate wind. >> >> Next is the AXT1 tripod adapter, which allows any camera tripod with a >> standard mount (1/4-20) to support a BNC-base whip antenna and a coaxial >> feed line. It has extra holes for ground radials and guying/mounting >> hardware. >> >> In short, the AX1 is intended to get us all out of the shack. (It certainly >> has in our case.) We hope you find that the AX1 inspires and facilitates >> many outdoor adventures to come. >> >> 73, >> Wayne, N6KR >> Eric, WA6HHQ >> >> >> >> >> >> >> >> >> >> __ >> 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 r...@wc3t.us > > > -- > 72, > Rich Hurd / WC3T / DMR: 3142737 > Northampton County RACES, EPA-ARRL Public Information Officer for Scouting > Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: > FN20is > __ 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] Announcing the Elecraft AX1 whip antenna and accessories
Hi Wayne, A couple more details on the AXT1 tripod adapter, if you would; From the illustration, it appears that this adapter has the BNC bulkhead connector for the AX-1, that seems plain enough; but there's no spec for how it is secured to the tripod other than the 1/4-20 thread spec. Is the other side of the adapter a female 1/4-20 connector, requiring only screwing it to the male (as if you were attaching a camera,) or is it simply a through bushing requiring some other means of securing it? I would hate to order the AXT1 only to find out I now have to run to the hardware store to cobble together some sort of Franken-mount to make it work. Thanks! On Wed, Oct 17, 2018 at 2:03 PM Wayne Burdick wrote: > Hi gang, > > Our new AX1 antenna has to be just about the worst-kept secret in Elecraft > history. We've been tinkering with it for over a year, going on ultralight > field outings and giving hands-on demos of the prototypes at hamfests. > (Thanks for all of your enthusiastic input!) > > We're happy to announce that the AX1 is now an official product. You can > find full details and ordering information here: > > http://www.elecraft.com/AX1/AX1.htm > > Executive summary: > > The AX1 is an ultraportable multi-band whip that disassembles into two 6" > (15 cm) pieces so it can go anywhere and be deployed rapidly. It's resonant > on 20 meters in one switch position, while the other is ideal for efficient > matching on 17 and 15 meters with the aid of an ATU (automatic antenna > tuner). In this sense the AX1 is the perfect companion to the KX2 and KX3, > which both have wide-range internal ATU options. > > The AX1 was designed specifically to facilitate pedestrian mobile and > ultralight hiking/backpacking. It can also serve as a convenient backup for > full-sized antennas. It can be deployed in seconds, and when used with a > KX2, puts the world's only all-band, all-mode, 10 watt HF "HT" in the palm > of your hand. > > In addition to the antenna itself, we've created two new accessories. > > First there's the AXB1 whip bipod, which can be used for table-top > operation with any lightweight whip antenna. The AXB1 is supplied with a > right-angle BNC adapter, and has adjustable legs to keep the whip from > rotating in light to moderate wind. > > Next is the AXT1 tripod adapter, which allows any camera tripod with a > standard mount (1/4-20) to support a BNC-base whip antenna and a coaxial > feed line. It has extra holes for ground radials and guying/mounting > hardware. > > In short, the AX1 is intended to get us all out of the shack. (It > certainly has in our case.) We hope you find that the AX1 inspires and > facilitates many outdoor adventures to come. > > 73, > Wayne, N6KR > Eric, WA6HHQ > > > > > > > > > > __ > 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 r...@wc3t.us > -- 72, Rich Hurd / WC3T / DMR: 3142737 Northampton County RACES, EPA-ARRL Public Information Officer for Scouting Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: *FN20is* __ 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 Clicks & Pops
That digital modes are all "low power modes" is an unfortunate urban legend, Ed. PSK31 is very narrow and will work well in very narrow RX bandwidths. Noise power, being proportional to bandwidth, will thus be less on each end, and lower powers work well. It's also angle modulation and moderately immune to at least Gaussian noise. JT65, FT8, and the other Dr. Joe Taylor modes are "weak signal" not "low power" modes. They operate in roughly a SSB voice channel bandwidth [~3 KHz] even though each signal is very narrow. They will decode at negative (S+N)/N ratios in a ~3 KHz channel where there will be many such signals. With today's abysmal conditions, even 1,500 W may result in a negative (S+N)/N ratio on the other end. It's the terrestrial equivalent of your lunar path, and no remonstration is required or deserved. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 10/17/2018 1:34 PM, Edward R Cole wrote: Bob, A question about your statement that you run 400w in digital modes (assuming you mean FT8, etc. and not RTTY). That seems pretty extreme. I pretty much ignore HF usage as I am not on HF very much (primarily an eme'er on 6m+). But back at the beginnings of psk-31 I built a HB interface* for my FT-847 and did a bit of 14.070 operating (with a dipole). I was recommended to not exceeding 25w (or 25% full power). Everyone seemed to do quite well on psk-31 with low power and some ran at QRP (<5w). I do not get why I hear of running high power digital when 10% would communicate easily. You may remonstrate me for running 2m-eme at 1500w on JT-65 but the path loss on 2m-eme is 254 dB+ and contacts are made over a half-million mile path. Certainly not encountered by terrestrial HF users. Not picking on you personally, but you made the statement so figure maybe would reply. Just curious. 73, Ed - KL7UW * that I/F later was used for JT-65 on eme 15 years ago. Now use my K3 directly connected. __ 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] Announcing the Elecraft AX1 whip antenna and accessories
Any chance you'll have these available this weekend in San Ramon? AD6YT On Wed, Oct 17, 2018 at 11:04 AM Wayne Burdick wrote: > Hi gang, > > Our new AX1 antenna has to be just about the worst-kept secret in Elecraft > history. We've been tinkering with it for over a year, going on ultralight > field outings and giving hands-on demos of the prototypes at hamfests. > (Thanks for all of your enthusiastic input!) > > We're happy to announce that the AX1 is now an official product. You can > find full details and ordering information here: > > http://www.elecraft.com/AX1/AX1.htm > > Executive summary: > > The AX1 is an ultraportable multi-band whip that disassembles into two 6" > (15 cm) pieces so it can go anywhere and be deployed rapidly. It's resonant > on 20 meters in one switch position, while the other is ideal for efficient > matching on 17 and 15 meters with the aid of an ATU (automatic antenna > tuner). In this sense the AX1 is the perfect companion to the KX2 and KX3, > which both have wide-range internal ATU options. > > The AX1 was designed specifically to facilitate pedestrian mobile and > ultralight hiking/backpacking. It can also serve as a convenient backup for > full-sized antennas. It can be deployed in seconds, and when used with a > KX2, puts the world's only all-band, all-mode, 10 watt HF "HT" in the palm > of your hand. > > In addition to the antenna itself, we've created two new accessories. > > First there's the AXB1 whip bipod, which can be used for table-top > operation with any lightweight whip antenna. The AXB1 is supplied with a > right-angle BNC adapter, and has adjustable legs to keep the whip from > rotating in light to moderate wind. > > Next is the AXT1 tripod adapter, which allows any camera tripod with a > standard mount (1/4-20) to support a BNC-base whip antenna and a coaxial > feed line. It has extra holes for ground radials and guying/mounting > hardware. > > In short, the AX1 is intended to get us all out of the shack. (It > certainly has in our case.) We hope you find that the AX1 inspires and > facilitates many outdoor adventures to come. > > 73, > Wayne, N6KR > Eric, WA6HHQ > > > > > > > > > > __ > 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 scott.sm...@gmail.com > -- Scott Small __ 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] KX3 Mic
Wiring on connector is different so I made up an adapter, easy to figure out. John K7JLT On Wed, Oct 17, 2018, 3:02 PM Rick McGaver via Elecraft < elecraft@mailman.qth.net> wrote: > I have a spare Icom HM-36. Anyone know if this will work "well" with KX3 > NK 9G > > __ > 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 k7jltex...@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] KX3 Mic
It can be made to work if you build an adapter. The microphone jack pinout is shown in the KX3 manual. If you don't have the skill to read the mic jack pinout and relate it to a plug, then you likely should develop that skill before you attempt to build an adapter. Some basic wiring knowledge is needed. 73, Don W3FPR On 10/17/2018 5:59 PM, Rick McGaver via Elecraft wrote: I have a spare Icom HM-36. Anyone know if this will work "well" with KX3 NK 9G __ 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 Clicks & Pops
Ed, Not picking on you personally either but I fail to understand this attitude that because some digital mode or another can make QSOs with 10 mW on some path, everyone else should run only10 mW. I consider my K3S + KPA500 to be a 500W transceiver (with push buttons for selecting bands) and that's the way I run it. Often, especially when I'm beating myself up on 160, I wish for more power. When some of my DX club buddies tease me about running QRP should I ask them to lower their power so we have parity? Wes N7WS ps: When I ran 2-meter EME 30 years ago we actually heard the signals by ear. On 10/17/2018 1:34 PM, Edward R Cole wrote: Bob, A question about your statement that you run 400w in digital modes (assuming you mean FT8, etc. and not RTTY). That seems pretty extreme. I pretty much ignore HF usage as I am not on HF very much (primarily an eme'er on 6m+). But back at the beginnings of psk-31 I built a HB interface* for my FT-847 and did a bit of 14.070 operating (with a dipole). I was recommended to not exceeding 25w (or 25% full power). Everyone seemed to do quite well on psk-31 with low power and some ran at QRP (<5w). I do not get why I hear of running high power digital when 10% would communicate easily. You may remonstrate me for running 2m-eme at 1500w on JT-65 but the path loss on 2m-eme is 254 dB+ and contacts are made over a half-million mile path. Certainly not encountered by terrestrial HF users. Not picking on you personally, but you made the statement so figure maybe would reply. Just curious. 73, Ed - KL7UW * that I/F later was used for JT-65 on eme 15 years ago. Now use my K3 directly connected. Date: Tue, 16 Oct 2018 16:59:15 -0500 From: Bob McGraw K4TAX To: "Dauer, Edward" Cc: "elecraft@mailman.qth.net" Subject: Re: [Elecraft] KPA500 Clicks & Pops Message-ID: Content-Type: text/plain; charset=us-ascii I do run 400 watts or so on digital modes. Issues are not really noted on SSB or CW modes. I've set the Fan Ctr to 2 and 3 and still noted the issue Was recently showing my K Line to some hams friends. They commented rather negatively on the point. Bob, K4TAX 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubus...@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 wes_n...@triconet.org __ 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] KX3 Mic
I have a spare Icom HM-36. Anyone know if this will work "well" with KX3 NK 9G __ 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 Clicks & Pops
Ed, Haven’t seen a response from him yet, but he may be taking about 160 meters. From what I have read, that may be an acceptable thing on that band, given QSB, band conditions, and antenna limitations. Jim / W6JHB > On Oct 17, 2018, at 1:34 PM, Edward R Cole wrote: > > Bob, > > A question about your statement that you run 400w in digital modes (assuming > you mean FT8, etc. and not RTTY). That seems pretty extreme. > > I pretty much ignore HF usage as I am not on HF very much (primarily an > eme'er on 6m+). But back at the beginnings of psk-31 I built a HB interface* > for my FT-847 and did a bit of 14.070 operating (with a dipole). I was > recommended to not exceeding 25w (or 25% full power). Everyone seemed to do > quite well on psk-31 with low power and some ran at QRP (<5w). > > I do not get why I hear of running high power digital when 10% would > communicate easily. You may remonstrate me for running 2m-eme at 1500w on > JT-65 but the path loss on 2m-eme is 254 dB+ and contacts are made over a > half-million mile path. Certainly not encountered by terrestrial HF users. > > Not picking on you personally, but you made the statement so figure maybe > would reply. Just curious. > > 73, Ed - KL7UW > * that I/F later was used for JT-65 on eme 15 years ago. Now use my K3 > directly connected. > > Date: Tue, 16 Oct 2018 16:59:15 -0500 > From: Bob McGraw K4TAX > To: "Dauer, Edward" > Cc: "elecraft@mailman.qth.net" > Subject: Re: [Elecraft] KPA500 Clicks & Pops > Message-ID: > Content-Type: text/plain; charset=us-ascii > > I do run 400 watts or so on digital modes. Issues are not really noted on > SSB or CW modes. > > I've set the Fan Ctr to 2 and 3 and still noted the issue > > Was recently showing my K Line to some hams friends. They commented rather > negatively on the point. > > Bob, K4TAX > > > 73, Ed - KL7UW > http://www.kl7uw.com > Dubus-NA Business mail: > dubus...@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 w6...@me.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] No Tx Audio
Joe & Bob - thank you very much, you nailed it. The K3 Monitor, when the K3 was in a digital mode, was at 0. Now have it turned up to 6 and my problem is solved in all the digital modes I listed. Tnx fer quick response. 73 Paul w2eck __ 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 Clicks & Pops
Bob, A question about your statement that you run 400w in digital modes (assuming you mean FT8, etc. and not RTTY). That seems pretty extreme. I pretty much ignore HF usage as I am not on HF very much (primarily an eme'er on 6m+). But back at the beginnings of psk-31 I built a HB interface* for my FT-847 and did a bit of 14.070 operating (with a dipole). I was recommended to not exceeding 25w (or 25% full power). Everyone seemed to do quite well on psk-31 with low power and some ran at QRP (<5w). I do not get why I hear of running high power digital when 10% would communicate easily. You may remonstrate me for running 2m-eme at 1500w on JT-65 but the path loss on 2m-eme is 254 dB+ and contacts are made over a half-million mile path. Certainly not encountered by terrestrial HF users. Not picking on you personally, but you made the statement so figure maybe would reply. Just curious. 73, Ed - KL7UW * that I/F later was used for JT-65 on eme 15 years ago. Now use my K3 directly connected. Date: Tue, 16 Oct 2018 16:59:15 -0500 From: Bob McGraw K4TAX To: "Dauer, Edward" Cc: "elecraft@mailman.qth.net" Subject: Re: [Elecraft] KPA500 Clicks & Pops Message-ID: Content-Type: text/plain; charset=us-ascii I do run 400 watts or so on digital modes. Issues are not really noted on SSB or CW modes. I've set the Fan Ctr to 2 and 3 and still noted the issue Was recently showing my K Line to some hams friends. They commented rather negatively on the point. Bob, K4TAX 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubus...@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] No Tx Audio
> Not sure if this is a K3 issue or a Windows 10 problem. Turn on the K3 Monitor (turn up the level). Select a Data mode, *HOLD* the CMP/PWR/MONI encoder in until the VFO B area of the display shows MONI ## and adjust ## until you hear the monitor audio while transmitting. All documented in the Owners Manual ... 73, ... Joe, W4TV On 2018-10-17 2:46 PM, paul ecker via Elecraft wrote: Problem: Not hearing any audio during transmit in digital modes.I have a K3, Win 10 PC, with microHam DKII interface. When transmitting inRTTY, PSK31 or FT-8 I am not hearing any Tx audio, which I had been previously. I first noticed this in RTTY when not hearingany diddles. But when using MMTTY – the K3 goes to Tx , I am getting power out and Iam being seen on the RTTY RBN. In PSK31 using WinWabler and FT-8 using WSJT-X, Iam making successful QSO’s. I have gone thru the DK II manual setup pages for theseprograms and cannot find errors in my setup. Not sure if this is a K3 issue or a Windows 10 problem. Anyone have any ideas on what might be wrong? 73Paulw2eck __ 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] Talk on early wireless and Marconi
I will be giving a talk on the Marconi Museum and early wireless at Pacificon, 11 AM. Everyone is invited. Also, my 15 day traveling adventure in Italy with my KX2. Don, NK6A -- __ 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] No Tx Audio
Check your MON level on your K3. I run mine about 8 for digital modes. I know nothing about the MicroHam DKII. I just run the USB interface between the computer running the application software and the radio. I only use 3 software applications, WSJT-X, HRD or FLDIGI. And with those, I run only one at a time. Logging is handled totally separate. 73 Bob, K4TAX On 10/17/2018 1:46 PM, paul ecker via Elecraft wrote: Problem: Not hearing any audio during transmit in digital modes.I have a K3, Win 10 PC, with microHam DKII interface. When transmitting inRTTY, PSK31 or FT-8 I am not hearing any Tx audio, which I had been previously. I first noticed this in RTTY when not hearingany diddles. But when using MMTTY – the K3 goes to Tx , I am getting power out and Iam being seen on the RTTY RBN. In PSK31 using WinWabler and FT-8 using WSJT-X, Iam making successful QSO’s. I have gone thru the DK II manual setup pages for theseprograms and cannot find errors in my setup. Not sure if this is a K3 issue or a Windows 10 problem. Anyone have any ideas on what might be wrong? 73Paulw2eck __ 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 rmcg...@blomand.net __ 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] No Tx Audio
Problem: Not hearing any audio during transmit in digital modes.I have a K3, Win 10 PC, with microHam DKII interface. When transmitting inRTTY, PSK31 or FT-8 I am not hearing any Tx audio, which I had been previously. I first noticed this in RTTY when not hearingany diddles. But when using MMTTY – the K3 goes to Tx , I am getting power out and Iam being seen on the RTTY RBN. In PSK31 using WinWabler and FT-8 using WSJT-X, Iam making successful QSO’s. I have gone thru the DK II manual setup pages for theseprograms and cannot find errors in my setup. Not sure if this is a K3 issue or a Windows 10 problem. Anyone have any ideas on what might be wrong? 73Paulw2eck __ 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] Announcing the Elecraft AX1 whip antenna and accessories
Hi gang, Our new AX1 antenna has to be just about the worst-kept secret in Elecraft history. We've been tinkering with it for over a year, going on ultralight field outings and giving hands-on demos of the prototypes at hamfests. (Thanks for all of your enthusiastic input!) We're happy to announce that the AX1 is now an official product. You can find full details and ordering information here: http://www.elecraft.com/AX1/AX1.htm Executive summary: The AX1 is an ultraportable multi-band whip that disassembles into two 6" (15 cm) pieces so it can go anywhere and be deployed rapidly. It's resonant on 20 meters in one switch position, while the other is ideal for efficient matching on 17 and 15 meters with the aid of an ATU (automatic antenna tuner). In this sense the AX1 is the perfect companion to the KX2 and KX3, which both have wide-range internal ATU options. The AX1 was designed specifically to facilitate pedestrian mobile and ultralight hiking/backpacking. It can also serve as a convenient backup for full-sized antennas. It can be deployed in seconds, and when used with a KX2, puts the world's only all-band, all-mode, 10 watt HF "HT" in the palm of your hand. In addition to the antenna itself, we've created two new accessories. First there's the AXB1 whip bipod, which can be used for table-top operation with any lightweight whip antenna. The AXB1 is supplied with a right-angle BNC adapter, and has adjustable legs to keep the whip from rotating in light to moderate wind. Next is the AXT1 tripod adapter, which allows any camera tripod with a standard mount (1/4-20) to support a BNC-base whip antenna and a coaxial feed line. It has extra holes for ground radials and guying/mounting hardware. In short, the AX1 is intended to get us all out of the shack. (It certainly has in our case.) We hope you find that the AX1 inspires and facilitates many outdoor adventures to come. 73, Wayne, N6KR Eric, WA6HHQ __ 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] KPA1500 Remote Software
I use Firefox and I was able to get to 1.22 From the main web site: - click on Firmware & S/W - click on Logging and Remote Control Software for the ... - scroll down to KPA1500, KPA500, KAT500 Remote Software Rich - N5ZC On 10/17/2018 12:43 PM, Rick WA6NHC wrote: I'm reading in the Elecraft newsletter that the KPA1500 remote software v1.22 is available now. I'm not seeing any links. Is Firefox being stupid again with cache or is it not there? 73, Rick nhc __ 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 rtho...@rthorne.net __ 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] KPA1500 Remote Software
I'm reading in the Elecraft newsletter that the KPA1500 remote software v1.22 is available now. I'm not seeing any links. Is Firefox being stupid again with cache or is it not there? 73, Rick nhc __ 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] P3 Cursors
Message: 10 Date: Mon, 15 Oct 2018 09:21:36 -0700 (MST) From: n6hz To:elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft P3 Bar Cursor Message-ID:<1539620496239-0.p...@n2.nabble.com> Content-Type: text/plain; charset=UTF-8 Hi Ed, Are there magenta and green arrows toward the bottom of the spectrum display? yes These indicate where the cursors are relative to your current center frequency. Understood If you are in fixed tune mode, you can easily re-center your VFO A cursor by two consecutive long presses of the SPAN/CENTER button. In Fixed Tune Mode, two consecutive long presses of the SPAN/CENTER button didn't help. Green and Magenta arrows are still at the bottom left of the display If all else fails, a memory reset can be performed by holding down the MENU button while powering up the P3. Note that this will erase an function key settings. I did a memory reset. The green and magenta arrows are still at the bottom left of the display. I reloaded all firmware with the latest versions. The Green and Magenta arrows are still at the bottom left of the display. The P3 seems to be working with the exception of the U and BAR cursors. Ed __ 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] Looking at KPA1500
Ignacy, for many years I was using a legal limit tube amp in combination with a manual tuner. For 20m and up, where the antenna has low swr and broad bandwidth, I would put the tuner in bypass position. For 40m the tuner would be active and I would manually adjust it, which didn't happen very often as I would mostly stay in the cw portion of the band. The amp could perhaps have handled the swr on 40m without a tuner, but I used the external tuner so I could tune up the amp on a dummy load rather than on the air. Over the years I did occasionally forget to switch the tuner into or out of bypass when going to a different band. So, manual switching rather than manual tuning was a bit of a problem. Now used to the KPA500/KAT500, I am spoiled and don't want to go back to having to remember to switch. I was hoping that the KPA1500 would not have the tuner built in, but I can see how most users save money with a built-in tuner. When I said my antenna swr can be up to 4.5, I quoted the worst case I can remember. The 40m coil is copper clamped onto aluminum elements. When I installed the antenna in 1993 I didn't apply compound to keep the joints healthy. Over the years, when I have been inactive for a long period such as a year, I have noticed the higher swr values that I quoted. Some operation at high power has then restored band edge swr readings to somewhat lower values, such as 4:1. If I recall correctly, those readings were well under 4:1 when the antenna was newly installed. I intend to service the antenna some day and get back to those better swr readings, but accessing the antenna for service is for me a big and difficult undertaking. With the prospect of getting somewhat close to the 3:1 limit, I am very interested in detailed derating numbers for the KPA1500 tuner, as well as any information that might indicate that it can safely handle somewhat higher swr depending on the actual complex load impedance.. 73, Erik K7TV -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Ignacy Sent: Wednesday, October 17, 2018 7:59 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Looking at KPA1500 The low range tuners up to 3:1 are very low loss and then can be made reliable. High range tuner for 1.5KW would be less so. You may buy MFJ-998 as an extra. I use MFJ-998 with 1.5 KW and a ladderline-fed dipole for a few years. Only small problems like burnt diode in SWR circuit or smoked capacitor by the output connector. But it is better to have such problems outside of the amp. Another choice is to have an AB switch where the same antenna is connected to A directly and to B via capacitor that lowers the SWR where otherwise it is too high. Ignacy, NO9E __ 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] KPA-1500 failure
Hi Robert, Please contact supp...@elecraft.com immediately so we can help you. Using the KPA1500 utility to download and sending us your KPA1500 config file is always required in cases like this and it will also help us quickly diagnose what's up. (That file contains the full amp setup and fault log history.) Hopefully, this may just be a cockpit error. (Overdrive activates the 3 dB input attenuator.) Also, NEVER drive the KPA1500 at 100W! That is well in excess of its fault level and can damage the amp. Our normal max input drive level is about 61 W or so if I recall correctly. Above that point the 1500 automatically lights the yellow OVR light and switches on a -3 dB input attenuator. After continuous drive for 10-20 secs at just above this max drive level the amp will then hard fault into standby. Never increase drive when the OVR light is on - that will only increase the risk of damaging the amp. OVR and the 3 dB attenuator will activate for overdrive, high reflected power, high PA current etc. When it lights, that is a message to REDUCE DRIVE and correct the problem. Once the drive is reduced, after several seconds the OVR light and input attenuator will turn back off. Please, -never- increase drive power when the OVR light is on or blinking. 73, Eric /elecraft.com (Note - To make sure everyone gets this info, I've send substantially the same email via the list to the three of you who have posted on this topic this morning.) / On 10/17/2018 4:54 AM, ROBERT MUELLER wrote: I have the same problem. I thought it was in the software I am using (HRD, FT8, JTAlerX). Perhaps not. I have to but in 100 watts from the K3S to get about 900 watts out. __ 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] KPA-1500 failure
Hi Paul, Can you send me the contact info for your friend so we can help him? (Or have him contact supp...@elecraft.com immediately.) Using the KPA1500 utility to download and sending us your KPA1500 config file is always required in cases like this and it will also help us quickly diagnose what's up. (That file contains the full amp setup and fault log history.) Hopefully, this may just be a cockpit error. (Overdrive activates the 3 dB input attenuator.) Also, NEVER drive the KPA1500 at 100W! That is well in excess of its fault level and can damage the amp. Our normal max input drive level is about 61 W or so if I recall correctly. Above that point the 1500 automatically lights the yellow OVR light and switches on a -3 dB input attenuator. After continuous slight drive for 10-20 secs at above this max drive level the amp will then hard fault into standby. Never increase drive when the OVR light is on - that will only increase the risk of damaging the amp. OVR and the 3 dB attenuator will activate for overdrive, high reflected power, high PA current etc. When it lights, that is a message to REDUCE DRIVE and correct the problem. Once the drive is reduced, after several seconds the OVR light and input attenuator will turn back off. 73, Eric /elecraft.com/ On 10/16/2018 7:35 PM, Paul Baldock wrote: A friend of mine's KPA-1500 has just failed. It behaves like half the PA has died, with max output power about 900W, and requiring excessive drive to get that. He has calls in to service but no response yet. Has anybody experienced such a failure? Thanks - Paul KW7Y __ 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 eric.swa...@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] KPA1500 not amplifying
Hi Bob - I just saw your post below. Please contact supp...@elecraft.com immediately and we'll help you figure out what is happening. Using the KPA1500 utility to download and sending us your KPA1500 config file is always required in cases like this and it will also help us quickly diagnose what's up. (that file contains the full amp setup and fault log history.) Hopefully, this may just be a cockpit error. Also, NEVER drive the KPA1500 at 100W! That is well in excess of its fault level and can damage the amp. Our normal max input drive level is about 61 W or so if I recall correctly. Above that point the 1500 automatically lights the yellow OVR light and switches on a -3 dB input attenuator. After continuous slight drive for 10-20 secs at above this max drive level the amp will then hard fault into standby. Never increase drive when the OVR light is on - that will only increase the risk of damaging the amp. OVR and the 3 dB attenuator will activate for overdrive, high reflected power, high PA current etc. When it lights, that is a message to reduce drive and correct the problem. Once the drive is reduced, after several seconds the OVR light and input attenuator will turn back off. 73, Eric /elecraft.com/ On 10/17/2018 7:45 AM, Bob Rennard via Elecraft wrote: I used my K3S driving my KPA1500 on Saturday during Makrothen and state QSO parties with no issues. I have the integration cable and RG-8X for the RF path. Sunday AM with the K3S set to 22 W, the KPA1500 was outputting 22 W more or less, not the 750 W I expected and got the day before. With the K3S set to 11.5 W, the KPA1500 produced about 400 W out. With the K3S set at 100 W, and the KPA1500 in STBY, the KPA1500 power meter read 100 W more or less. Later in the day the situation self-healed, but the healing did not last. Trouble shooting ideas ? The recent KPA1500 manual troubleshooting section suggests the obvious stuff which is irrelevant. N7WY - Bob R __ 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 eric.swa...@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] Looking at KPA1500
The low range tuners up to 3:1 are very low loss and then can be made reliable. High range tuner for 1.5KW would be less so. You may buy MFJ-998 as an extra. I use MFJ-998 with 1.5 KW and a ladderline-fed dipole for a few years. Only small problems like burnt diode in SWR circuit or smoked capacitor by the output connector. But it is better to have such problems outside of the amp. Another choice is to have an AB switch where the same antenna is connected to A directly and to B via capacitor that lowers the SWR where otherwise it is too high. Ignacy, NO9E -- 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
[Elecraft] KPA1500 not amplifying
I used my K3S driving my KPA1500 on Saturday during Makrothen and state QSO parties with no issues. I have the integration cable and RG-8X for the RF path. Sunday AM with the K3S set to 22 W, the KPA1500 was outputting 22 W more or less, not the 750 W I expected and got the day before. With the K3S set to 11.5 W, the KPA1500 produced about 400 W out. With the K3S set at 100 W, and the KPA1500 in STBY, the KPA1500 power meter read 100 W more or less. Later in the day the situation self-healed, but the healing did not last. Trouble shooting ideas ? The recent KPA1500 manual troubleshooting section suggests the obvious stuff which is irrelevant. N7WY - Bob R __ 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] KPA-1500 failure
I have the same problem. I thought it was in the software I am using (HRD, FT8, JTAlerX). Perhaps not. I have to but in 100 watts from the K3S to get about 900 watts out. > On October 16, 2018 at 10:35 PM Paul Baldock mailto:p...@paulbaldock.com > wrote: > > > A friend of mine's KPA-1500 has just failed. It behaves like half the > PA has died, with max output power about 900W, and requiring > excessive drive to get that. He has calls in to service but no > response yet. Has anybody experienced such a failure? > > Thanks > * Paul KW7Y > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net 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 k8...@comcast.net mailto:k8...@comcast.net > __ 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] What is the TX DLY of a KX3?
What is the fixed delay between KEY OUT going low and RF coming out of a KX3? The K3 has a CONFIG:TX DLY setting, but I find no equivalent in the KX3 manuals. The concern would be RF hot switching if the external amplifier relay is too slow. >From the KX3 manual: "The keyline output goes low during transmit, and can be used for transmit/receive switching of linear amplifiers and transverters." The TX Delay does not appear to be documented. (KEY OUT on a KX3 is the RING contact of the 2.5 mm stereo connector labeled ACC2). 73, Bob, N6TV __ 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] Looking at KPA1500
Jim, my antenna is somewhat unusual. It is a Sommer XP-708, where the hardware added to enable 40m is very minimal: just a coil hooked up between two points on an antenna whose dimensions say "20m and up". Given that each antenna element is appropriate for 20m or shorter wavelength, and the boom is no longer than the elements, the narrow bandwidth on 40 is not surprising. Also, the antenna has no directivity at all on 40. One might wonder if this antenna might be a compromise in other respects, but the performance in actual use has always been a positive surprise to me. For the cost of adding 40m to the basic design, I would say that it is a great value. 73, Erik K7TV -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Jim Brown Sent: Tuesday, October 16, 2018 10:58 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Looking at KPA1500 On 10/16/2018 10:24 PM, Erik Basilier wrote: > My main 40m antenna meets that requirement over a significant portion > of the band, but at band edges swr can be 4.5:1 or so. Hmmm. 40M is not very wide (only 4.2%, as compared to 80M which is 14.3%). What kind of antenna is it? Simple antennas without traps or loading coils like resonant dipoles and verticals typically cover 40M with SWR below 2:1 if tuned to the center of the band. 80M is the tough one, but can be tamed with some transmission line and or stub tricks. 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 ebasil...@cox.net __ 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] Looking at KPA1500
On 10/16/2018 10:24 PM, Erik Basilier wrote: My main 40m antenna meets that requirement over a significant portion of the band, but at band edges swr can be 4.5:1 or so. Hmmm. 40M is not very wide (only 4.2%, as compared to 80M which is 14.3%). What kind of antenna is it? Simple antennas without traps or loading coils like resonant dipoles and verticals typically cover 40M with SWR below 2:1 if tuned to the center of the band. 80M is the tough one, but can be tamed with some transmission line and or stub tricks. 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
