[Elecraft] Elecraft CW Net Announcement
Good Evening, After a rainy week we had a break. And then more rain. The weather is back to normal. Peaceful gloom and the sound of rain drops. The moss is glowing. The sun is slightly more active. Who knows how that will effect the ionosphere? We can find out tomorrow. Please join us on: 14050 kHz at 2200z Sunday (3 PM PDT Sunday) 7047 kHz at z Monday (5 PM PDT Sunday) 73, Kevin. KD5ONS _ __ 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] FS: KX3 + PX3
Sold. --ae0mm ‐‐‐ Original Message ‐‐‐ On Saturday, April 6, 2019 5:56 PM, AE0MM via Elecraft wrote: > KX3-K S/N 6480 > $1175 (including shipping up to $25) > Includes: > KXAT3 > KXFL3 > KX3-2M-AT-3 > KXUSB > I/Q Cable > E980232 IO Module > E850775 Power Cable > > PX3-K S/N 1978 > $440 (including shipping up to $20) > Includes: > PX3CBL > E850775 Power Cable > > Paypal preferred. > > Thanks, > Mark / ae0mm > > 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] Tuneup, Rescue, Build your K2 and others
Hello, Does your K2 need repair? Tuneup? Want to sell it, but it needs some attention before offering it for sale? In addition to tuning your rig, I can also rescue a building project you might have started some time ago. See what my clients have said about my construction and service work at http://www.eham.net/reviews/detail/6768 Photos of the popular "Twins" -- the KPA100 and KAT100 in EC2 enclosure -- are at https://wilcoxengineering.com/kpa100-in-ec2/ Cheers, Alan Alan D. Wilcox, W3DVX (K2-5373, K3-40) 570-916-9590 (cell, text) http://amazon.com/author/alandwilcox Williamsport, PA 17701 __ 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] Visalia Vivid Visual Previews?
Just looking for a picture that shows a small piece of real estate on something that we have not seen before from our favorite radio company. Just a piece. Thanks, Dan KM6CQ -- Sent from my iPhone X __ 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] FS: KX3 + PX3
KX3-K S/N 6480 $1175 (including shipping up to $25) Includes: KXAT3 KXFL3 KX3-2M-AT-3 KXUSB I/Q Cable E980232 IO Module E850775 Power Cable PX3-K S/N 1978 $440 (including shipping up to $20) Includes: PX3CBL E850775 Power Cable Paypal preferred. Thanks, Mark / ae0mm __ 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] LP-PAN 2 Panadapter with Z10000 for K2
Originally an LP-PAN, but upgraded to LP-PAN 2. No extraneous holes or mods. Includes: LP-PAN 2 Z1 buffer amp optimized for K2 BNC-SMA cable to connect K2 to LP-PAN Manual pdf's on DVD Photos here: https://photos.app.goo.gl/zRkmEw7V8ztjrALM8 See telepostinc.com for easy installation, current software and sound card recommendations. $150 including priority mail shipping to US only. Paypal preferred to email below. Ships immediately after payment is received. Contact me off-list. Semi-active on this list for years. Current info at QRZ.com. Eric KE6US eric_c...@hotmail.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 SWR LED Doesn't Light with 1.0/1 SWR
All, To amplify Bob's comments --- That is one of the situations with digital displays Vs. analog. An analog display might show your an SWR of 1.55 (if you can interpolate the needle position) while the digital display resolution will show you either a 1.5 or a 1.6 indication - there is no way to show an in-between reading on a digital display. 73, Don W3FPR On 4/6/2019 5:04 PM, Bob McGraw K4TAX wrote: The SWR LED scaling on the KPA500 is different than the scaling on the KAT500. Yet the KPA500 does have a numerical readout..if one wishes to split hairs. 1.0, 1.1, 1.2, 1.3 and etc. With LED type displays, there is always a "transition" point from one value / LED to the next. It could be at 1.4, or 1.5 or 1.6. Thus a value of 1.4 on one device could be 1.6 on another. __ 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] Selling T1 and XG3
Elecraft T1 Antenna Tuner $120 incl. priority mail shipping. Used with dozens of QRP kits which I no longer build. Once used with my K2/10 when the internal KAT2 went Tango Uniform on a camping trip. Very versatile. Fast, tiny and tough. Includes original printed manual. Elecraft XG3 RF Signal Source $170 incl. priority mail shipping. Used on the bench under computer control until I replaced it with a more suitable bench signal generator (larger...with knobs). Used it to align K1, K2, and a variety of boat anchor receivers. Includes special serial cable and original printed manual. Both units purchased factory assembled. Excellent condition. Photos at: https://photos.app.goo.gl/Ngv6h2DuvnaFpSUi9 Free priority mail shipping to US only. Paypal preferred to email below. Ships immediately after payment is received. Contact me off-list. Semi-active on this list for years. Current info at QRZ.com. Eric KE6US eric_c...@hotmail.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
[Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR
"I have noticed that when the SWR (after tuning) as displayed on the KPA500 is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The green 1.0/1 SWR LED on the KPA500 does light up.)" That's normal. Why would you expect a 1.2 SWR LED to be lit when the SWR value is less than 1.2? The range of the KPA500 LED SWR display is much greater that the range of the KAT500 LED SWR display. Also, neither of them will give a useful reading at low power levels. I suggest the LP-100A if you really want to know the load presented by your antenna system. It will give useful complex load information with power levels between 1 watt and legal limit. The fact that the two LED SWR meters have different ranges, and different step points, may be by design. If the LED meters were identical people would perhaps expect them to always display the same value. Don't forget that SWR is a poor indicator of antenna system load and the KPA500 really dislikes low R loads even if the SWR is less than 1.5:1. 73, Andy. k3wyc __ 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 SWR LED Doesn't Light with 1.0/1 SWR
Dick, thank you for jumping in. Has been a long time since I used the KAT500 now that KPA1500 is in the shack! 72 & 73, Bill K9YEQ FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc. -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of d...@elecraft.com Sent: Saturday, April 6, 2019 4:36 PM To: 'wmbrian' ; elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR Brian: Your KAT500 low order SWR LED, labeled "1.2", is illuminated when there is a little bit of forward power and an SWR of 1.2:1 or higher is computed. If the SWR is under 1.2:1, then no KAT500 SWR LEDs are illuminated. Even 500 watts of RF with little or no reflected power shouldn't light any KAT500 SWR LEDs. The KPA500 (and KPA1500) have an SWR bar LED for 1.0. The KAT500's first SWR LED is 1.2. Fred's book is correct; your KAT500 performs an SWR calculation whether or not the ATU is bypassed. That result can be displayed with the KAT500 Utility Operate page, or any other program that can send a command to the KAT500 to read its SWR. If SWR is 1.2:1 or higher, then it's also displayed on KAT500 SWR LEDs. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of wmbrian Sent: Saturday, April 6, 2019 11:02 To: elecraft@mailman.qth.net Subject: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR I recently added the KAT500 and KPA500 to my K3 station. I have noticed that when the SWR (after tuning) as displayed on the KPA500 is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The green 1.0/1 SWR LED on the KPA500 does light up.) I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no tuning action has taken place in these circumstances (due to memorized KAT500 tuning configuration). However, I noticed at the bottom of page 49 of Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? Thanks, Brian, K8GRR -- 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 __ 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 SWR LED Doesn't Light with 1.0/1 SWR
Brian: Your KAT500 low order SWR LED, labeled "1.2", is illuminated when there is a little bit of forward power and an SWR of 1.2:1 or higher is computed. If the SWR is under 1.2:1, then no KAT500 SWR LEDs are illuminated. Even 500 watts of RF with little or no reflected power shouldn't light any KAT500 SWR LEDs. The KPA500 (and KPA1500) have an SWR bar LED for 1.0. The KAT500's first SWR LED is 1.2. Fred's book is correct; your KAT500 performs an SWR calculation whether or not the ATU is bypassed. That result can be displayed with the KAT500 Utility Operate page, or any other program that can send a command to the KAT500 to read its SWR. If SWR is 1.2:1 or higher, then it's also displayed on KAT500 SWR LEDs. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of wmbrian Sent: Saturday, April 6, 2019 11:02 To: elecraft@mailman.qth.net Subject: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR I recently added the KAT500 and KPA500 to my K3 station. I have noticed that when the SWR (after tuning) as displayed on the KPA500 is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The green 1.0/1 SWR LED on the KPA500 does light up.) I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no tuning action has taken place in these circumstances (due to memorized KAT500 tuning configuration). However, I noticed at the bottom of page 49 of Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? Thanks, Brian, K8GRR -- 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 __ 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 Feature Request
Sticky timer; turn the K3 on at a set time each day. Rick WA6NHC Smell Czech correction happens > On Apr 6, 2019, at 2:12 PM, Dick Dickinson wrote: > > Sticky Noise Blanker.through on/off cycle and band changes. > > > > > > Dick - KA5KKT > > __ > 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 Feature Request
Sticky Noise Blanker.through on/off cycle and band changes. Dick - KA5KKT __ 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 SWR LED Doesn't Light with 1.0/1 SWR
Bob, thanks for input, but I understand the issue as to not get a reading on the SWR display of the KTA500 and the concern is there may be something amiss. Thus my suggestion to be sure the SWR LED is working and to figure it out, I suggested a simple method to make sure the LED on the SWR indicator can register/is working. 73, Bill K9YEQ https://wrj-tech.com/ -Original Message- From: Bob McGraw K4TAX Sent: Saturday, April 6, 2019 4:04 PM To: Bill Johnson Cc: wmbrian ; elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR The SWR LED scaling on the KPA500 is different than the scaling on the KAT500. Yet the KPA500 does have a numerical readout..if one wishes to split hairs. 1.0, 1.1, 1.2, 1.3 and etc. With LED type displays, there is always a "transition" point from one value / LED to the next. It could be at 1.4, or 1.5 or 1.6. Thus a value of 1.4 on one device could be 1.6 on another. Bob, K4TAX Sent from my iPhone > On Apr 6, 2019, at 3:13 PM, Bill Johnson wrote: > > Does the power output LEDs give a reading? If they do and you show no > reflected that should be ok. If you have a bride after that it may show no > lite either. You can always bypass the KPA's and find a frequency where you > see 2:1 then turn the KPA's back on and see if that gives a reading. If not, > suggest you call tech support. > > 72 & 73, > Bill > K9YEQ > FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc. > > -Original Message- > From: elecraft-boun...@mailman.qth.net > On Behalf Of wmbrian > Sent: Saturday, April 6, 2019 1:02 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR > > I recently added the KAT500 and KPA500 to my K3 station. > > I have noticed that when the SWR (after tuning) as displayed on the > KPA500 is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the > KAT500. (The green 1.0/1 SWR LED on the KPA500 does light up.) > > I have assumed that the 1.2/1 KAT500 SWR LED does not light up is > because 1) the KAT500 threshold for the first SWR LED is 1.2/1 and 2) > because no tuning action has taken place in these circumstances (due > to memorized > KAT500 tuning configuration). However, I noticed at the bottom of page 49 of > Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even > when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when > the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? > > Thanks, > > Brian, K8GRR > > > > -- > 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 > __ > 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 SWR LED Doesn't Light with 1.0/1 SWR
The SWR LED scaling on the KPA500 is different than the scaling on the KAT500. Yet the KPA500 does have a numerical readout..if one wishes to split hairs. 1.0, 1.1, 1.2, 1.3 and etc. With LED type displays, there is always a "transition" point from one value / LED to the next. It could be at 1.4, or 1.5 or 1.6. Thus a value of 1.4 on one device could be 1.6 on another. Bob, K4TAX Sent from my iPhone > On Apr 6, 2019, at 3:13 PM, Bill Johnson wrote: > > Does the power output LEDs give a reading? If they do and you show no > reflected that should be ok. If you have a bride after that it may show no > lite either. You can always bypass the KPA's and find a frequency where you > see 2:1 then turn the KPA's back on and see if that gives a reading. If not, > suggest you call tech support. > > 72 & 73, > Bill > K9YEQ > FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc. > > -Original Message- > From: elecraft-boun...@mailman.qth.net On > Behalf Of wmbrian > Sent: Saturday, April 6, 2019 1:02 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR > > I recently added the KAT500 and KPA500 to my K3 station. > > I have noticed that when the SWR (after tuning) as displayed on the KPA500 > is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The > green 1.0/1 SWR LED on the KPA500 does light up.) > > I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) > the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no tuning > action has taken place in these circumstances (due to memorized > KAT500 tuning configuration). However, I noticed at the bottom of page 49 of > Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even > when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when > the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? > > Thanks, > > Brian, K8GRR > > > > -- > 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 > __ > 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 SWR LED Doesn't Light with 1.0/1 SWR
Does the power output LEDs give a reading? If they do and you show no reflected that should be ok. If you have a bride after that it may show no lite either. You can always bypass the KPA's and find a frequency where you see 2:1 then turn the KPA's back on and see if that gives a reading. If not, suggest you call tech support. 72 & 73, Bill K9YEQ FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc. -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of wmbrian Sent: Saturday, April 6, 2019 1:02 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KAT500 SWR LED Doesn't Light with 1.0/1 SWR I recently added the KAT500 and KPA500 to my K3 station. I have noticed that when the SWR (after tuning) as displayed on the KPA500 is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The green 1.0/1 SWR LED on the KPA500 does light up.) I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no tuning action has taken place in these circumstances (due to memorized KAT500 tuning configuration). However, I noticed at the bottom of page 49 of Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? Thanks, Brian, K8GRR -- 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 __ 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 SWR LED Doesn't Light with 1.0/1 SWR
Yes I have that combination, KPA500 / KAT500. Over the years I've learned that a VSWR of 1.5:1 or less means little to nothing. Oh it's "comforting" to operate all the time with a 1.1:1 SWR but just accurate is that indication? And the fact the two devices show different values lends credence to " just how accurate is that indication". Plus many diode detection methods are least accurate at lower levels. Conclusion: find something more interesting to worry about. Bob, K4TAX Sent from my iPhone > On Apr 6, 2019, at 1:01 PM, wmbrian wrote: > > I recently added the KAT500 and KPA500 to my K3 station. > > I have noticed that when the SWR (after tuning) as displayed on the KPA500 > is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The > green 1.0/1 SWR LED on the KPA500 does light up.) > > I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) > the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no > tuning action has taken place in these circumstances (due to memorized > KAT500 tuning configuration). However, I noticed at the bottom of page 49 > of Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed > even when the tuner is bypasssed". So, I'm confused. Does no SWR LED light > when the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? > > Thanks, > > Brian, K8GRR > > > > -- > 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 > __ 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] OT: K Line's 100th
We lived in Auburn CA for 38 years and the transcontinental Union Pacific goes right through town [we lived about 1/4 mile from both tracks]. The eastbound track crosses I-80 at the south end of town on a very high trestle. Just after Elecraft had coined the term "K-Line," I saw a container train on the trestle with a bunch of "K-Line" containers. First thought was that Elecraft sales had exploded in volume to fill that many shipping containers. I emailed Eric and asked if their product name might be a trademark infringement on the Japanese company. He explained that trademarks are registered by business sector and the Elecraft K-line was safe since Elecraft wasn't a shipping company and Kawasaki Kisen Kaisha didn't make ham radios. Those same tracks run through Sparks NV where we now live. Nevada has no inventory tax on wholesale goods, so we have a huge number of distribution centers [like Amazon], and I see those K-Line container trains and trucks with triple trailers all the time and occasionally imagine them filled with "real" K-lines. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 4/5/2019 6:00 PM, Mike Markowski wrote: Google does a pretty good job of bringing up things on my phone that I'm interested in. But I got a smile when this one showed up. Nothing is infallible, even machine learning. :-) https://splash247.com/new-boss-strikes-sombre-tone-as-k-line-turns-100/ 73, Mike ab3ap __ 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 SWR LED Doesn't Light with 1.0/1 SWR
I recently added the KAT500 and KPA500 to my K3 station. I have noticed that when the SWR (after tuning) as displayed on the KPA500 is 1.0/1 (or occasionally 1.1/1) no SWR LED lights up on the KAT500. (The green 1.0/1 SWR LED on the KPA500 does light up.) I have assumed that the 1.2/1 KAT500 SWR LED does not light up is because 1) the KAT500 threshold for the first SWR LED is 1.2/1 and 2) because no tuning action has taken place in these circumstances (due to memorized KAT500 tuning configuration). However, I noticed at the bottom of page 49 of Fred Cady's book on the KAT500 and the KPA500 it says "VSWR is displayed even when the tuner is bypasssed". So, I'm confused. Does no SWR LED light when the SWR is 1.0/1 (or very close to it) because the SWR is below 1.2/1? Thanks, Brian, K8GRR -- 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
Re: [Elecraft] KPA500 keyed with no drive
In one off-line reply I was asked why the temperature rose to 50 deg C. With a room temperature of about 25 deg C the temperature of my KPA500 PA module when not keyed runs about 34 deg C. Measured PA dissipation when keyed with no drive is 40.75 W.It seems reasonable that 40.75 W could raise the PA module temperature from 34 deg C to the fan 1 trip temperature of 50 deg C. The irony is that my Arduino data logger records KPA500 temperature at 3 different locations. Had it been running I would have recorded some interesting data. However, it was the fact that it lost power that caused the event. Now, of course, I'm tempted to repeat the event with the logger running. 73, Andy, k3wyc __ 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
