[Elecraft] P3 Tip to center cursor in Fixed Tune mode
I prefer to keep my P3 in Fixed Tune mode. In this mode the VFO cursors travel across the screen when the K3 is tuned. When the station of interest is at the very edge of the screen it may be preferred to move the VFO-A cursor to the center of the screen. The quickest official way to accomplish this is to hold the CENTER button twice. There is no way to assign this operation to an FN key. My tip is to assign the FIXTRACK operation to a function key. When the FN key is pressed the mode changes from FIXED to TRACKING and the VFO-A cursor (and the station of interest) jump to center screen. Later, a quick push of the same FN button returns the P3 to FIXED TUNE mode. 73, Mike K2MK -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Tip-to-center-cursor-in-Fixed-Tune-mode-tp7028157p7028157.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Tip to center cursor in Fixed Tune mode
On 11/24/2011 5:36 AM, Mike K2MK wrote: My tip is to assign the FIXTRACK operation to a function key. When the FN key is pressed the mode changes from FIXED to TRACKING and the VFO-A cursor (and the station of interest) jump to center screen. Later, a quick push of the same FN button returns the P3 to FIXED TUNE mode. As you have noted, the solution is to assign the FixTrack On/Off toggle key to the faxt push of a soft key. But you do NOT have to wait for the second push to recenter the display -- you can simply hit the key twice in quick succession and the display will be recentered with FixTrack on. I LOVE the FixTrack option, with Averaging set for maximum, and that's almost all I use during normal operation. I also assign the Peak function to the fast push of a soft key, and toggle it on and off to look at the bandwidth of individual signals. In doing so, one will quickly get really disgusted with those hams producing the very dirty ones. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 for Christmas?
In the video with Eric he offers and estimate of $850 - $900 for a basic unit. rck...@comcast.net wrote: I don't see pricing of KX3 on Elecraft web page.any info on cost? -- Dave G KK7SS Richland, WA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 for Christmas?
Video? 73 de M0XDF (K3 #174, P3 #108, KX3 #???) -- We can't solve problems by using the same kind of thinking we used when we created them. -Albert Einstein, physicist, Nobel laureate (1879-1955) On 24 Nov 2011, at 17:31, Dave KK7SS wrote: In the video with Eric he offers and estimate of $850 - $900 for a basic unit. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 Internal 20 watt auto-tuner VERSUS T1 (external) auto-tuner
Question on the KX3 internal 20-watt auto-tuner versus the T1 (external) auto-tuner. First a Caveat: I thought I asked this question earlier this week but I find no evidence that I ever sent it so if this by chance is a duplicate, excuses can be invented. Is there an advantage to the KX3 internal 20-watt auto-tuner (option) versus the T1 auto-tuner. I already have the T1 and I use it with my KX1 and a few other QRP rigs. Besides being internal (which is nice) are there performance or feature advantages to the new KX3 option internal 20-watt auto-tuner? Thanks. 73, phil, K7PEH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 Internal 20 watt auto-tuner VERSUS T1 (external) auto-tuner
Wayne touched on this topic a couple of weeks ago in the KX3 mailing list: I've been using a T1 with the KX3 during development, and it works great. We do plan to support T1 remote band switching from the KX3. However, now that I have the first prototype of the KXAT3 ATU module in hand, I'll be switching to the internal tuner as soon as I get the firmware written. Rich (AC7MA) did a beautiful job on the tuner design. At 2x3 inches, it has to be the smallest 8-inductor/8- capacitor L-network ever. The T1's PCB is about the same size, but it's 7-L/7-C, so the KXAT3 will have a wider matching range (same as the KAT3). I'll send photos of the ATU integrated into the radio as soon as I get it running. Wayne 73, Matt VK2ACL On 25/11/2011, at 5:30 AM, Phil Hystad wrote: Question on the KX3 internal 20-watt auto-tuner versus the T1 (external) auto-tuner. First a Caveat: I thought I asked this question earlier this week but I find no evidence that I ever sent it so if this by chance is a duplicate, excuses can be invented. Is there an advantage to the KX3 internal 20-watt auto-tuner (option) versus the T1 auto-tuner. I already have the T1 and I use it with my KX1 and a few other QRP rigs. Besides being internal (which is nice) are there performance or feature advantages to the new KX3 option internal 20-watt auto-tuner? Thanks. 73, phil, K7PEH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 for Christmas?
What I understood was the list was just a tool for notification. I would expect the announcement will be an e-mail broadcast and purchase will be FIFO (first in first out). So I if you are keen to get your hands on a new KX3 keep watch on your in-basket or the website. Once the opening call is made it will be Black Friday at Elecraft! Re: price - In the video of the interview in Dayton, Wayne mentioned a price spread of $899-1099. I'm hoping for the lower number as I have finalized my garage sale of ham equipment and have the cash in PayPal ready to purchase. I am also interested in what the accessories are priced. I am looking at the KXFL3 filter, MH-3 mic, and KXMM3 mobile mount in my initial purchase. I've used the existing prices for filters and mics as an estimate. BTW earliest delivery is indicated late Jan and Feb. so it won't be under the tree this year even if the KX3 is open for business. I am eager to get mine as I have only the K3 at this point (sold my FT-847, FT-817, and Icom V8000). 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep 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
Re: [Elecraft] wattage on k3 vs kpa500
Hi, Does the K3 have an antenna tuner and is it enabled? If it does, your readings may be entirely accurate. The K3 delivers 60 watts into the matched load it sees. The KPA500, however is on the unmatched side and sees 80W forward power and 20W reflected which is the 25% reflected power equivalent to a 3:1 SWR. I think you should be able to measure reflected power on the KPA500. And what is the SWR reported by the K3? The other possibility is that with a real antenna you have RF in the shack sufficiently strong to cause power measurements to vary along the transmission line. AB2TC - Knut RICHH wrote Hi Maybe some one can answer this. I set my k3 to 60 watts and measure 60 watts on my kpa500 meter with the amp in standby trnsmitting into a dummy load. When I switch to an antenna with a 3:1 swr the k3 still says 60 watts but the kpa500 now reads 80 watts with the amp still in standby. So which is correct or neither ? Thanks Richard snip -- View this message in context: http://elecraft.365791.n2.nabble.com/wattage-on-k3-vs-kpa500-tp7026865p7029300.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 for Christmas?
Is information going out on some KX3 mailing list? I thought I had registered, but I have not seen anything. Phil NS7P -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net]On Behalf Of Edward R. Cole Sent: Thursday, November 24, 2011 11:03 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] KX3 for Christmas? What I understood was the list was just a tool for notification. I would expect the announcement will be an e-mail broadcast and purchase will be FIFO (first in first out). So I if you are keen to get your hands on a new KX3 keep watch on your in-basket or the website. Once the opening call is made it will be Black Friday at Elecraft! Re: price - In the video of the interview in Dayton, Wayne mentioned a price spread of $899-1099. I'm hoping for the lower number as I have finalized my garage sale of ham equipment and have the cash in PayPal ready to purchase. I am also interested in what the accessories are priced. I am looking at the KXFL3 filter, MH-3 mic, and KXMM3 mobile mount in my initial purchase. I've used the existing prices for filters and mics as an estimate. BTW earliest delivery is indicated late Jan and Feb. so it won't be under the tree this year even if the KX3 is open for business. I am eager to get mine as I have only the K3 at this point (sold my FT-847, FT-817, and Icom V8000). 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep 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 __ 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] Contesting use
Hello, I' cll chance another post to this very long thread. That device plugs into a USB port on the PC and as I understand it injects keystrokes and mouse events which are received by the program that has focus on the PC (the active window). Perhaps in a contest run situation that will always be the logging program, but for general use it's a big problem. Also you'd still have to program the K3 macros into the logging program and assign them to whatever you have programmed the pod to send when the various buttons are pushed. That's more programming, not less. I and many others have one of those Griffin wheels sitting unused on the shelf because of these shortcomings. The Ten-Tec pod talks directly to their rigs and I am sure that's what K3 users are asking for , too. AB2TC - Knut Don Wilhelm-4 wrote This sort of item is just the pod I was referring to. I do not know of the specifics of this particular pod, but it holds promise. If the buttons are capable of sending K3 commands as macros, it can be a winner. 73, Don W3FPR On 11/22/2011 10:23 PM, Bill W4ZV wrote: This looks very promising for 12 macro keys and a VFO: http://xkeys.com/xkeys/xk12JSH.php Has anyone done this with the K3? 73, Bill snip -- View this message in context: http://elecraft.365791.n2.nabble.com/Diversity-mode-preamp-tp7015033p7029335.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 for Christmas?
There's a yahoo discussion group for KX3: http://groups.yahoo.com/group/KX3/ The mailliat you joined is probably where the official announcements will be made, the yahoo group is more just informal discussion, speculation, etc., and occasionally some of the Elecraft staff chime in with some interesting technical tid-bits. Please feel free to join the yahoo group if you are so inclined. 73, Matt VK2ACL On 25/11/2011, at 6:41 AM, Phillip Shepard ph...@riousa.com wrote: Is information going out on some KX3 mailing list? I thought I had registered, but I have not seen anything. Phil NS7P -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net]On Behalf Of Edward R. Cole Sent: Thursday, November 24, 2011 11:03 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] KX3 for Christmas? What I understood was the list was just a tool for notification. I would expect the announcement will be an e-mail broadcast and purchase will be FIFO (first in first out). So I if you are keen to get your hands on a new KX3 keep watch on your in-basket or the website. Once the opening call is made it will be Black Friday at Elecraft! Re: price - In the video of the interview in Dayton, Wayne mentioned a price spread of $899-1099. I'm hoping for the lower number as I have finalized my garage sale of ham equipment and have the cash in PayPal ready to purchase. I am also interested in what the accessories are priced. I am looking at the KXFL3 filter, MH-3 mic, and KXMM3 mobile mount in my initial purchase. I've used the existing prices for filters and mics as an estimate. BTW earliest delivery is indicated late Jan and Feb. so it won't be under the tree this year even if the KX3 is open for business. I am eager to get mine as I have only the K3 at this point (sold my FT-847, FT-817, and Icom V8000). 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep 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 __ 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] Contesting use
From the site of the XKeys products, they have a program called X-keys TrueCOM and VCOM Software. This will send commands through a serial port to a device. I have sent them an email asking how it works and if it will interface with a device such as K3. If it will, then you can setup commands to send to the K3 much the same as the K3 Utility program. I am not totally familiar with the XKeys themselves so am not sure how it works but it sure looks promising, Tim Herrick, KQ8M k...@kq8m.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ab2tc Sent: Thursday, November 24, 2011 3:00 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Contesting use Hello, I' cll chance another post to this very long thread. That device plugs into a USB port on the PC and as I understand it injects keystrokes and mouse events which are received by the program that has focus on the PC (the active window). Perhaps in a contest run situation that will always be the logging program, but for general use it's a big problem. Also you'd still have to program the K3 macros into the logging program and assign them to whatever you have programmed the pod to send when the various buttons are pushed. That's more programming, not less. I and many others have one of those Griffin wheels sitting unused on the shelf because of these shortcomings. The Ten-Tec pod talks directly to their rigs and I am sure that's what K3 users are asking for , too. AB2TC - Knut Don Wilhelm-4 wrote This sort of item is just the pod I was referring to. I do not know of the specifics of this particular pod, but it holds promise. If the buttons are capable of sending K3 commands as macros, it can be a winner. 73, Don W3FPR On 11/22/2011 10:23 PM, Bill W4ZV wrote: This looks very promising for 12 macro keys and a VFO: http://xkeys.com/xkeys/xk12JSH.php Has anyone done this with the K3? 73, Bill snip -- View this message in context: http://elecraft.365791.n2.nabble.com/Diversity-mode-preamp-tp7015033p7029335 .html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] Contesting use
Well, after installing the X-keys TrueCOM and VCOM Software it appears that I was wrong. This makes the XKeys device emulate an RS232 device so you can use it for developing RS232 software. Oh well, it looked promising. Tim Herrick, KQ8M k...@kq8m.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of KQ8M Sent: Thursday, November 24, 2011 4:40 PM To: 'ab2tc'; elecraft@mailman.qth.net Subject: Re: [Elecraft] Contesting use From the site of the XKeys products, they have a program called X-keys TrueCOM and VCOM Software. This will send commands through a serial port to a device. I have sent them an email asking how it works and if it will interface with a device such as K3. If it will, then you can setup commands to send to the K3 much the same as the K3 Utility program. I am not totally familiar with the XKeys themselves so am not sure how it works but it sure looks promising, Tim Herrick, KQ8M k...@kq8m.com -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ab2tc Sent: Thursday, November 24, 2011 3:00 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Contesting use Hello, I' cll chance another post to this very long thread. That device plugs into a USB port on the PC and as I understand it injects keystrokes and mouse events which are received by the program that has focus on the PC (the active window). Perhaps in a contest run situation that will always be the logging program, but for general use it's a big problem. Also you'd still have to program the K3 macros into the logging program and assign them to whatever you have programmed the pod to send when the various buttons are pushed. That's more programming, not less. I and many others have one of those Griffin wheels sitting unused on the shelf because of these shortcomings. The Ten-Tec pod talks directly to their rigs and I am sure that's what K3 users are asking for , too. AB2TC - Knut Don Wilhelm-4 wrote This sort of item is just the pod I was referring to. I do not know of the specifics of this particular pod, but it holds promise. If the buttons are capable of sending K3 commands as macros, it can be a winner. 73, Don W3FPR On 11/22/2011 10:23 PM, Bill W4ZV wrote: This looks very promising for 12 macro keys and a VFO: http://xkeys.com/xkeys/xk12JSH.php Has anyone done this with the K3? 73, Bill snip -- View this message in context: http://elecraft.365791.n2.nabble.com/Diversity-mode-preamp-tp7015033p7029335 .html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] RX Audio Distorted on FM
Happy Thanksgiving to All, Just installed the KFL3B-FM Filter to my older K3. Tuning around on 10 this morning I heard a station, but things just didn't sound quite right. I fired up the 817 and found that the transmit audio sounds great, but the receive audio sounds distorted as though it were being overdriven. I've update all the firmware and haven't been able to find any references to receive audio. Any suggestions? Thanks.. Pete - WD6DKW __ 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] RX Audio Distorted on FM
Pete, Please tell us the rest of the story. Do you have the 2.7/2.8 filter set for SSB reception, or are you trying to use the FM filter for SSB reception? If you moved the 2.7/2.8 kHz filter to a different slot, you must tell the K3 firmware where it is now. K3 Utility simplifies the process, but you still have to tell it which filter is in which position. 73, Don W3FPR On 11/24/2011 6:06 PM, Pete-Astound wrote: Happy Thanksgiving to All, Just installed the KFL3B-FM Filter to my older K3. Tuning around on 10 this morning I heard a station, but things just didn't sound quite right. I fired up the 817 and found that the transmit audio sounds great, but the receive audio sounds distorted as though it were being overdriven. I've update all the firmware and haven't been able to find any references to receive audio. Any suggestions? Thanks.. Pete - WD6DKW __ 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] RX audio distortion on FM
Afternoon Don and the group, Thanks for the quick response.. We're running the stock 2.7 filter in slot 3 and the FM filter in slot 1.. CW and SSB all running fine with no issues.. In fact, the FM didn't sound half bad coming thru the 2.7 filter while playing around with it this afternoon. Filter has not been moved since the day I put it in, just added the KFL3B-FM to slot 1. I've gone thru the config process and made sure everything was on and verified that in FM mode, XFIL1 appears on the screen. I setup/verified the filter options using the K3 utility last night and all seemed well there.. I did noticed last night once everything was installed that the background static was a lot higher when I kicked it into FM mode so I'm willing to bet I am over driving the audio path somewhere. Strictly using the FM filter for FM.. As mentioned I have not had any other issues with audio quality on any other mode until I try to listen to anything on FM either on 10 or 6. Other than that, radio (Serial # 1051) is stock with no other modifications.. Since the bands are now pretty dead, I am doing all the testing with my 817 in house. As mentioned, TX audio sounds really good, the RX audio though sound just plain distorted as though it were being over-drivin or I'm not quite centered in the filter passband.. Pete - WD6DKW __ 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] wattage on k3 vs kpa500
Most likely the K3 is putting out 60 watts, real watts. The wattmeter is also probably correct reading 80 watts forward, with 20 reflected, equal to a net 60 watts. And 60 watts is radiated by the antenna. No power get reabsorbeds by the amp because it is presenting a congugate match. i.e. any power coming back from the antenna sees a perfect mismatch at the transmitter and gets re-reflected back to the antenna. Explained 100 times better than I can by Walt Maxwell in his books Reflections or maybe the current one is Reflections III something like that. Anyway the point is, none of this rf power heats up the finals. __ 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] wattage on k3 vs kpa500
I believe an ATU or other matching network provides a conjugate match. That results in optimum power transfer because the RF current and voltage are in phase and the SWR meter will read 1:1. When there is a mismatch, as indicated a high SWR, the finals in the rig do not see the optimum load impedance for efficient power transfer so they do not operate at optimum efficiency. Lower efficiency means that more of the d-c power applied to the finals is consumed in heat instead of RF, and the amount of heat the finals must dissipate goes up. I believe that's what led many Hams to mistakenly believe that the reflected power was being absorbed in the finals. The solution is, of course, to provide a proper termination for the finals. When the antenna or other load doesn't present the right impedance, a matching network (a.k.a. 'tuner' or ATU) can be inserted to provide one. Ron AC7AC -Original Message- Most likely the K3 is putting out 60 watts, real watts. The wattmeter is also probably correct reading 80 watts forward, with 20 reflected, equal to a net 60 watts. And 60 watts is radiated by the antenna. No power get reabsorbeds by the amp because it is presenting a congugate match. i.e. any power coming back from the antenna sees a perfect mismatch at the transmitter and gets re-reflected back to the antenna. Explained 100 times better than I can by Walt Maxwell in his books Reflections or maybe the current one is Reflections III something like that. Anyway the point is, none of this rf power heats up the finals. __ 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] KPA-500 no RF until power cycle
I have the same problem with mine, too (SN#0250). What I do is switch back and forth between a couple of bands with the band buttons and then it's fine. I made it into a habit whenever I turn the amp on so I can QRV as soon as I want to and not have to fiddle with it when trying to snag a DX station. I suspect sticky relays; wish there was a good and easy fix for this annoyance! 73, Jeff NH7RO -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA-500-no-RF-until-power-cycle-tp7017734p7029998.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] wattage on k3 vs kpa500
If I may, let me reinforce and paraphrase Ron's comments. Today's transceivers are designed to work into a 50 ohm resistive load. That means they will develop full power into a load which measures an SWR = 1.0. Now, most transmitters are designed to work properly into a SWR = 2.0 load - that means that they will develop full power output - however, the efficiency may suffer, so the transmitter current draw may increase when the load differs from a 1-1 SWR. The power output will remain the same if the SWR is not 1-1, but there will be more heat produced by the PA because the efficiency has been reduced. The reflected power is not dissipated in the finals (read the antenna article on my website www.w3fpr.com), but the fact that the finals are not operating at the full efficiency point, there will be increased heat - that is just the way the laws of physics work. 73, Don W3FPR On 11/24/2011 9:06 PM, Ron D'Eau Claire wrote: I believe an ATU or other matching network provides a conjugate match. That results in optimum power transfer because the RF current and voltage are in phase and the SWR meter will read 1:1. When there is a mismatch, as indicated a high SWR, the finals in the rig do not see the optimum load impedance for efficient power transfer so they do not operate at optimum efficiency. Lower efficiency means that more of the d-c power applied to the finals is consumed in heat instead of RF, and the amount of heat the finals must dissipate goes up. I believe that's what led many Hams to mistakenly believe that the reflected power was being absorbed in the finals. The solution is, of course, to provide a proper termination for the finals. When the antenna or other load doesn't present the right impedance, a matching network (a.k.a. 'tuner' or ATU) can be inserted to provide one. Ron AC7AC -Original Message- Most likely the K3 is putting out 60 watts, real watts. The wattmeter is also probably correct reading 80 watts forward, with 20 reflected, equal to a net 60 watts. And 60 watts is radiated by the antenna. No power get reabsorbeds by the amp because it is presenting a congugate match. i.e. any power coming back from the antenna sees a perfect mismatch at the transmitter and gets re-reflected back to the antenna. Explained 100 times better than I can by Walt Maxwell in his books Reflections or maybe the current one is Reflections III something like that. Anyway the point is, none of this rf power heats up the finals. __ 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] KPA-500 no RF until power cycles
Tonight I also experienced the KPA-500 not putting out power in SSB mode while the amp was in OPERATE mode. All parameters in the amp were normal. The K3 set power output correctly indicated 39 watts. With the amp in STANDBY mode the power went correctly to 100 set watts. I put the amp in OPERATE mode and pushed the TUNE button on the K3. The amp then started to work normally. I am using both a PA Key cable and the KPAK3AUX cable. The amp is set up for 240V operation. This is the first time I have experienced this. I also am wondering if this is a relay problem. Roy Morris W4WFB __ 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] KPA-500 no RF until power cycles
Hi Roy, Try it without the PA Key cable, the KPA500 when connected to a K3 neither needs or wants it to be connected. All keying signals will get to the amp via the AUXBUS Cable. 73 de Jeff Cochrane - VK4BOF East Innisfail QLD, Australia K3 #4257, P3#1629, KPA-500 #161 - Original Message - From: Roy Morris To: elecraft@mailman.qth.net Sent: Friday, November 25, 2011 3:33 PM Subject: [Elecraft] KPA-500 no RF until power cycles Tonight I also experienced the KPA-500 not putting out power in SSB mode while the amp was in OPERATE mode. All parameters in the amp were normal. The K3 set power output correctly indicated 39 watts. With the amp in STANDBY mode the power went correctly to 100 set watts. I put the amp in OPERATE mode and pushed the TUNE button on the K3. The amp then started to work normally. I am using both a PA Key cable and the KPAK3AUX cable. The amp is set up for 240V operation. This is the first time I have experienced this. I also am wondering if this is a relay problem. Roy Morris W4WFB __ 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] RX audio distorted on FM
Good evening All, Well I've had a chance to play around some more and now found that at least with a local signal from the 817 the audio distortion on FM receive seems to have mysteriously disappeared. One question I still have though is that with an antenna hooked up and listening on either 10 or 6 meters when the band is quiet (night time with the pre-amp and attenuator off), does the background static get at least twice as loud if not more when you go from any of the modes to FM? Seems like it did not does this when I had just the 2.7 filter installed into slot 3. Tried turning the slot 1 filter off, but it still defaults to it when in FM mode so I can't compare unless I go back in and physically take that filter out. Thanks for your responses.. Pete - WD6DKW __ 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
