[Elecraft] [K3] Spectrogram and the K3
If you have nothing to do today, try this: Install Spectrogram on your computer so that you can feed the audio output of your K3 into your computer's line in (or your laptop's mic in). Scan the input using the following parameters in Spectrogram (I am using version 5.1.7 here): Sample Rate: 11 kHz Resolution: 16 bit Type: Stereo Display Type: Line Channels: Dual Scale: 60 dB Freq Scale: Linear FFT Size: 1024 Spectrum Average: 32 Click on OK to start the measurement. Put the K3 into CW mode and vary the WIDTH control. Look at that fine, flat frequency response that follows your WIDTH just perfectly. I was using this today to help my son visualize what that control does. (You may have to set the K3 volume control to about 12 o'clock to get a good reading in Spectrogram, but this depends on your Windows volume control, whether you have HI or LO audio gain selected on the K3, etc.) Set the K3 WIDTH to 50 Hz and notice the response. Beautiful. Now, turn APF on and watch very closely. Notice what APF does to the peak! Now you know why it can be so effective under the right conditions. I asked you to set the Type to STEREO in Spectrogram, but an interesting thing happens when you set it to MONO instead. After setting it to MONO, set your K3 WIDTH to a convenient width such as 1.0 kHz. Notice the nice, flat response as before. Now, turn on the K3's AFX and see what happens. Change the AFX from Delay1 to Delay5 and see the results. For extra credit, explain what is happening here. Here's a hint: set AFX to "Bin" and notice that the signal goes away completely! My guess is because Spectrogram's MONO mode is essentially L + R, and in Bin mode L and R are out-of-phase and so their sum is zero. Assuming this, can you explain why Delay1 through Delay5 look like they do? Al W6LX __ 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] Re. Inexpensive headset
In a pinch you can get some at Big Lots store for 5 or 10 bucks. They are the type with small headphones so they may not be good for extended wear. The transmit audio electret is good. The receive audio I wish were better. Since the ear part is small that sit on your ear not around they are no sweat. 73 Mike R Play me some fiddle, but no stinkin' violin! Amateur/Ham Radio KE5GBC HF & Echolink mobile __ 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 MCU LD
Please follow the steps in K3 Utility Help, Troubleshooting MCU Load failure. Dick, K6KR Sent from my iPad On Jul 8, 2012, at 8:46 PM, "Jim Miller KG0KP" wrote: > I had made several JT65 contacts and a phone contact just prior to this > problem. > > K3 hung up (became constant errors appearing to be communications problems) > during load of new code from non-updated Utility Program. Went to website > and downloaded new Utility and re-downloaded code. K3 was now in MCU LD > mode. Utility indicated during port test that the K3 needed a MCU LD. This > only happened once. After that it was just trying different baud rates on > the comm port. Disconnected PC to P3 cable at P3 and connected directly to > K3. No change. Removed that cable and used the cable had gone from the P3 > to the K3. No change. Used another PC with a real Comm port and downloaded > the K3 Utility to it and tried it direct. That did not work either. > Different PC, different cable, new loads of Utility and K3 code to each PC > each direct from the Elecreaft site. The only common piece here is the K3. > > The K3 initially had to have power unplugged as it was totally froze up > after the initial incident. When powered on, it came up in MCU LD mode on > its own. That is the only time the Utility program said it needed MCU LD. > The PCs had been rebooted numerous times during this procedure to insure > there wasn't something being assumed by the PC OS or the Utility program. > All future times it simply could not communicate, repeatedly trying > descending baud rates. > > Looking at the Utility help files on force loading the MCU, it says to leave > the K3 without power connected for longer than a few seconds. This was done > for a 35 minute period, no change. Power on was done by procedure of > holding the power switch in until the transmit light starts blinking and the > darkened panel shows MCU LD. > > I also removed the top cover and removed and reinstalled the KIO3 bd and the > KXV3 bd. No loose connections. > > I CANNOT talk to it. Anybody with any ideas, please respond. > > Thanks es 73, de Jim KG0KP > > > __ > 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] FOR SALE K2/100
K2/100: S# 6603, KAF2,KAT100 Asking $800, plus shipping and will include qrp cover as well. Radio used mainly for cw. Clarence, KH6G __ 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 MCU LD
Jim, This comes up continuously. If something interrupts a firmware load, you will end up in the condition stated. I could say "RTFM" or read the prior posts that ask the same question -- BUT --- The cure is to read *carefully* the instructions in either the manual or the K3 Utility "to force a firmware load". Shortcuts do not work - follow the instructions carefully from beginning to end, and re-boot the computer with each attempt. If K3 Utility cannot establish communications, you may have a problem with your serial port - if you are using a USB to serial adapter, try another one. Some adapters are good, while others are "flaky" - make no assumptions, but do try a different adapter if necessary. The adapters that work use the FTDI chipset. Make certain you have the latest drivers loaded. (a real serial port is the best solution).. 73, Don W3FPR On 7/8/2012 11:46 PM, Jim Miller KG0KP wrote: > I had made several JT65 contacts and a phone contact just prior to this > problem. > > K3 hung up (became constant errors appearing to be communications problems) > during load of new code from non-updated Utility Program. Went to website > and downloaded new Utility and re-downloaded code. K3 was now in MCU LD > mode. Utility indicated during port test that the K3 needed a MCU LD. This > only happened once. After that it was just trying different baud rates on > the comm port. Disconnected PC to P3 cable at P3 and connected directly to > K3. No change. Removed that cable and used the cable had gone from the P3 > to the K3. No change. Used another PC with a real Comm port and downloaded > the K3 Utility to it and tried it direct. That did not work either. > Different PC, different cable, new loads of Utility and K3 code to each PC > each direct from the Elecreaft site. The only common piece here is the K3. > > The K3 initially had to have power unplugged as it was totally froze up > after the initial incident. When powered on, it came up in MCU LD mode on > its own. That is the only time the Utility program said it needed MCU LD. > The PCs had been rebooted numerous times during this procedure to insure > there wasn't something being assumed by the PC OS or the Utility program. > All future times it simply could not communicate, repeatedly trying > descending baud rates. > > Looking at the Utility help files on force loading the MCU, it says to leave > the K3 without power connected for longer than a few seconds. This was done > for a 35 minute period, no change. Power on was done by procedure of > holding the power switch in until the transmit light starts blinking and the > darkened panel shows MCU LD. > > I also removed the top cover and removed and reinstalled the KIO3 bd and the > KXV3 bd. No loose connections. > > I CANNOT talk to it. Anybody with any ideas, please respond. > > Thanks es 73, de Jim KG0KP > > > __ > 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 MCU LD
I had made several JT65 contacts and a phone contact just prior to this problem. K3 hung up (became constant errors appearing to be communications problems) during load of new code from non-updated Utility Program. Went to website and downloaded new Utility and re-downloaded code. K3 was now in MCU LD mode. Utility indicated during port test that the K3 needed a MCU LD. This only happened once. After that it was just trying different baud rates on the comm port. Disconnected PC to P3 cable at P3 and connected directly to K3. No change. Removed that cable and used the cable had gone from the P3 to the K3. No change. Used another PC with a real Comm port and downloaded the K3 Utility to it and tried it direct. That did not work either. Different PC, different cable, new loads of Utility and K3 code to each PC each direct from the Elecreaft site. The only common piece here is the K3. The K3 initially had to have power unplugged as it was totally froze up after the initial incident. When powered on, it came up in MCU LD mode on its own. That is the only time the Utility program said it needed MCU LD. The PCs had been rebooted numerous times during this procedure to insure there wasn't something being assumed by the PC OS or the Utility program. All future times it simply could not communicate, repeatedly trying descending baud rates. Looking at the Utility help files on force loading the MCU, it says to leave the K3 without power connected for longer than a few seconds. This was done for a 35 minute period, no change. Power on was done by procedure of holding the power switch in until the transmit light starts blinking and the darkened panel shows MCU LD. I also removed the top cover and removed and reinstalled the KIO3 bd and the KXV3 bd. No loose connections. I CANNOT talk to it. Anybody with any ideas, please respond. Thanks es 73, de Jim KG0KP __ 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/KX3 MF/LF Transverter
There are plenty of LF converters to homebrew from, most very simple including those using an SA602/612. Another is the AMRAD LF converter, QST April 2002. PCBs can be purchased from FAR circuits. I use three of those for dual RX and TX with a 14MHz local oscillator and a K3 in transverter mode, displaying the actual LF freq (Project: http://no3m.net/index.php?page=600m ). There are guys in the experimental group running antennas far smaller than most would consider. However, while a short, minimally top-loaded (relatively speaking), heavily base loaded antenna will be grossly inefficient, all it takes is more power to reach the ERP level, which will be low anyways. 73 - Eric NO3M On 07/08/12 18:48, Jim Lowman wrote: > Not to rain on anyone's parade, Bill, but a couple of things > come to mind: > > -- I would think it a risky business to develop a transceiver >for a band that is not yet authorized for amateur use > > -- If most of us have trouble getting an antenna going for > 160m - wow - 630m? > > Just thinking out loud; not wanting to discourage anyone. > > 73 de Jim - AD6CW > > On 7/8/2012 10:42 AM, Bill Harris wrote: >> Wayne: >> An Elecraft Transverter for below 510 kHz would be well received, world >> wide. I guess the number of participants would be rather low to start with >> but interest would increase with the availability of such an item. A poll >> of the amateur market would give a good indication of interest. If the >> numbers aren't there to warrant such venture, then maybe one of the small >> kit-providers might pick up the banner. >> Presently, I see two potential customers; KL7UW and myself. How's that for >> a start? ;) >> 73 >> de Bill-w7kxb >> . . >> __ 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/KX3 MF/LF Transverter
Not to rain on anyone's parade, Bill, but a couple of things come to mind: -- I would think it a risky business to develop a transceiver for a band that is not yet authorized for amateur use -- If most of us have trouble getting an antenna going for 160m - wow - 630m? Just thinking out loud; not wanting to discourage anyone. 73 de Jim - AD6CW On 7/8/2012 10:42 AM, Bill Harris wrote: > Wayne: > An Elecraft Transverter for below 510 kHz would be well received, world wide. > I guess the number of participants would be rather low to start with but > interest would increase with the availability of such an item. A poll of the > amateur market would give a good indication of interest. If the numbers > aren't there to warrant such venture, then maybe one of the small > kit-providers might pick up the banner. > Presently, I see two potential customers; KL7UW and myself. How's that for a > start? ;) > 73 > de Bill-w7kxb > . . > __ 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] Audio volume problems
Monty, The Gorilla glue may be OK right now, but if the knob material broke before, it is quite likely to break at another place later. Elecraft will send a new set of (improved) knobs at no cost - contact pa...@elecraft.com. 73, Don W3FPR On 7/8/2012 2:07 PM, Monty Shultes wrote: > Another vote here for a cracked knob. My RF Gain control smaller knob > cracked recently. Gorilla glue put it back together . > Monty K2DLJ > > __ 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] Firmware glitch?
Gary, While in SSB mode, go to MENU:AGC MD and set it ON. The symptom you describe suggests your radio has AGC SPD set to SLO, but in SSB the AGC MD is set to OFF. 73, Lyle kK7P > My KX3 has just been upgraded to the latest firmware and all seems to be > working fine except in two areas. Whenever I'm in the SSB mode the AGC - S > does not show up on the display. I have the SSB mode setting set for Slow > but... __ 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] Firmware glitch?
My KX3 has just been upgraded to the latest firmware and all seems to be working fine except in two areas. Whenever I'm in the SSB mode the AGC - S does not show up on the display. I have the SSB mode setting set for Slow but can't get it to show that on the display. It just shows AGC -. The second problem I'm having concerns the KXAT3. When I tell the ATU to go into a tune mode on 10 meters the radio shuts off totally. I'm loading into a known good Mosley TA-33 beam antenna. The radio works fine on 15 and 20 meters on this antenna and I've checked the antenna and all is fine. Anyone know why these problems are happening? Other than that, I love this little radio and Elecraft hit a home run with the bases loaded on this one. My serial number is 564 and it was a kit radio. Thanks, Gary A. - W0MNA __ 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 encoder backlash?
Hi Mike, I have #3019 and mine are also a little sloppy. I wouldn't call it backlash, but sloppiness, as the detents have some play in them and they don't really "detent" in concert with whatever changes are being made. One of the few unimpressive aspects of an otherwise superb radio. Regards, Scott, N9AA On 7/7/12 9:58 PM, ac...@aol.com wrote: > > I have a factory-built K3 #3215 and have always noticed a significant > amount of backlash on the four encoders located just left of the VFO A knob. > Has this been improved on newer K3's? Is there a replacement option or a > newer front panel available to improve this? > Any info would be appreciated. > Thanks. > > > Mike AC6JA > K3 #3215 > P3 #2039 > KPA500 #809 > > __ 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 -- Unwanted tone in transmit audio, all modes
I have 2 K3s: one I built a year or more ago and one I just purchased with a sub receiver built at the factory. On the new unit with the sub, when I transmit there is a tone in the audio. It's pretty constant at about 2.8 kHz, will vary with the mic gain, is audible in the MON output as well as on a separate receiver. It is evident in USB/LSB, Data, AM and FM in the monitor and is present with no mic plugged in. My usual power supply is a 25 amp switching supply, but the issue remains when i switch to a 25 amp linear supply. I can unhook everything from the K3 except for power and antenna with no change. The K3 that I built does not exhibit this problem hooked in the station the same way--e.g. unplug one from antenna, power, rs232, etc. and drop the other one in with the same connections. Elecraft's thinking was that it's an interaction between the main and sub receiver dsp boards and they sent me a replacement sub receiver dsp board which I have just installed. Problem remains and was not changed--still the same tone. The new unit contains the ATU, sub receiver, digital audio board, and the 100 W option. Anyone come across this problem before? Thanks & 73, Ken, KY5G __ 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: use at <500-KHz
Dave, If the KXAT3 ATU is installed, and you tune below about 1.3 MHz, a special broadcast-band filter is selected on the ATU that improves suppression of harmonic images. The LC network is adjusted as you tune below this frequency. The LC network values used are a compromise since we don't know what type of antenna is being used; we selected the values while using a 40-meter dipole. This special BC band filtering won't necessarily improve sensitivity in this low range -- it is there only to improve rejection of images that are characteristic of a quadrature downconversion IF receiver (like the KX3, Flex radios, etc.). 73, Wayne N6KR On Jul 8, 2012, at 9:51 AM, Dyarnes wrote: > Hi All, > > This issue seems to come up with just about every rig that offers > general > coverage. I know it was a topic of discussion with the K3 when it > first > arrived. It has always been my understanding that offering general > coverage > on a ham rig meant compromise somewhere. Most of the earlier rigs > that > started offering general coverage tended to compromise on the ham band > performance in order to accomplish the wide RX capability. That's > why many > didn't even try to offer it. I think Elecraft's approach has been > to offer > it, but without degrading the ham band performance, which means the > wide > band stuff may be a bit lacking, particularly at the low end. > > I've only checked the BC band performance on my KX3 once or twice, > and just > to see if I heard much of anything! Actually, I could hear things > pretty > well, but probably not like I would on a more specifically designed > radio. > I also suspect the antenna I was using wasn't a very good match. > Wayne's > explanation seems to at least make good sense to me, and I'm sure the > technical issues involved are real. Heck--just about every radio I > own > drops off somewhere! I just want the least adverse effect to occur > on the > ham bands. Also, I wonder what the internal ATU does (or is capable > of > doing), if anything, when I tune down to the BC band. From a strictly > intuitive standpoint, I know that a lot of tuners tend to lose > capability > below 80 meters, so I wonder if the KX3 ATU can/does even function > at the BC > band. My guess is that it doesn't! You can't activate it down > there, so I > don't know what's happening. Does that mean you really need an > antenna that > is reasonably resonant at that frequency? I suspect there have been > some > "tricks" applied to generate some sort of performance that low, but > I really > don't expect much. Seems like we may be chasing ghosts to expect > too much. > > Dave W7AQK > > > __ > 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] Audio volume problems
Another vote here for a cracked knob. My RF Gain control smaller knob cracked recently. Gorilla glue put it back together . Monty K2DLJ >> Many K3 users have seen this same rotation problem with the AF/SUB and >>> RF/SUB controls. Try adjusting the set screw(s). If that doesn't >>> work, you may need to contact support for new ones. With early K3s, >>> there were some problems with these controls. __ 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: use at <500-KHz
Hi All, This issue seems to come up with just about every rig that offers general coverage. I know it was a topic of discussion with the K3 when it first arrived. It has always been my understanding that offering general coverage on a ham rig meant compromise somewhere. Most of the earlier rigs that started offering general coverage tended to compromise on the ham band performance in order to accomplish the wide RX capability. That's why many didn't even try to offer it. I think Elecraft's approach has been to offer it, but without degrading the ham band performance, which means the wide band stuff may be a bit lacking, particularly at the low end. I've only checked the BC band performance on my KX3 once or twice, and just to see if I heard much of anything! Actually, I could hear things pretty well, but probably not like I would on a more specifically designed radio. I also suspect the antenna I was using wasn't a very good match. Wayne's explanation seems to at least make good sense to me, and I'm sure the technical issues involved are real. Heck--just about every radio I own drops off somewhere! I just want the least adverse effect to occur on the ham bands. Also, I wonder what the internal ATU does (or is capable of doing), if anything, when I tune down to the BC band. From a strictly intuitive standpoint, I know that a lot of tuners tend to lose capability below 80 meters, so I wonder if the KX3 ATU can/does even function at the BC band. My guess is that it doesn't! You can't activate it down there, so I don't know what's happening. Does that mean you really need an antenna that is reasonably resonant at that frequency? I suspect there have been some "tricks" applied to generate some sort of performance that low, but I really don't expect much. Seems like we may be chasing ghosts to expect too much. Dave W7AQK __ 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/KX3 MF/LF Transverter
Wayne: An Elecraft Transverter for below 510 kHz would be well received, world wide. I guess the number of participants would be rather low to start with but interest would increase with the availability of such an item. A poll of the amateur market would give a good indication of interest. If the numbers aren't there to warrant such venture, then maybe one of the small kit-providers might pick up the banner. Presently, I see two potential customers; KL7UW and myself. How's that for a start? ;) 73 de Bill-w7kxb . . > From: n...@elecraft.com > To: kl...@acsalaska.net > Date: Sun, 8 Jul 2012 08:49:25 -0700 > CC: Elecraft@mailman.qth.net > Subject: Re: [Elecraft] KX3 Receive Performance Below 1500 kHz > > Hi Ed, > > The KX3's spec also says, "Note: Sensitivity decreases gradually below > 1.5 MHz due to protective high-pass filtering" We did this to > ensure that the PIN diodes in the T/R switch are protected. A fairly > large amount of attenuation is required by the time you get down to > 500 kHz or lower. > > We did do some transmit tests in the 470 kHz range. We can easily get > +10 or possibly +20 dBm output at these frequencies, but you'd need an > external filter/amplifier to obtain useful transmit power output. > Given that, I would think that an external receiving converter that > shifted the 0-1 MHz range up to 7-8 MHz on the KX3 would also be a > good solution. The KX3 has transverter bands that can be set up for > this application, allowing the VFO to read correctly when on this > band. The ACC2 GPIO pin could be used to turn the external converter > on/off. > > The K3 has the same high-pass filtering in the main antenna path as > the KX3. But the K3 also provides a way to bypass the filter, by using > the KXV3's RX ANT input (or the XVTR input). > > 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
Re: [Elecraft] K3 encoder backlash?
I have SN 3329 and think I have the same thing. I'd call it more play than backlash. I think there was a short period where Elecraft used some different encoders than they'd been using and ours have these encoders. I built a K3 about 5 months earlier for our club. Those encoders have light detents with no play/backlash. I've considered contacting Elecraft about replacing my encoders but never have. 73, Alan N5NA On 7/8/2012 2:23 AM, elecraft-requ...@mailman.qth.net wrote: > Message: 23 > Date: Sat, 7 Jul 2012 18:01:42 -0400 (EDT) > From:ac...@aol.com > Subject: [Elecraft] K3 encoder backlash? > To:elecraft@mailman.qth.net > Message-ID: > Content-Type: text/plain; charset="US-ASCII" > > I have a factory-built K3 #3215 and have always noticed a significant > amount of backlash on the four encoders located just left of the VFO A knob. > Has this been improved on newer K3's? Is there a replacement option or a > newer front panel available to improve this? > Any info would be appreciated. > Thanks. > > > Mike AC6JA > K3 #3215 > P3 #2039 > KPA500 #809 __ 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 Receive Performance Below 1500 kHz
Wayne, Thanks for the quick reply. I have also determined that there is reception down to 310-KHz when I use an antenna cut for 500-KHz. My first test was quick and used my 80m inverted-V which resulted in nothing being heard (maybe I did not have a good connection; it was just a quick look). I saw useful receive levels which would lead me to think use of my Clifton BC band reject filter ahead of a preamp tuned for 470-KHz would probably restore good sensitivity without subjecting the KX3 to overloading signals from the BC band (based on what I see using this filter with the K3 and the SDR-IQ). +10 dBm is quite sufficient for my transmit amplifier (a converted 100w NDB transmitter). I drive it with under 1mw direct from the K3 running in TEST mode output of the transverter output jack. I have built a low-pass filter for 510-KHz which can be used for transmitting (rated several hundred watts). WRC-12 stipulates ham output on the 630m band will not exceed 1w ERP (and no more than 5w ERP if permitted by certain national regulatory agencies). The ARRL Experimental Group was licensed to run up to ERP=20w; my 100w transmitter produces 4.15w ERP with my inverted-L antenna. So considering the low efficiency of antennas that hams would use one may only need something like 20w RF output. That is +43 dBm implying the need for about 30-dB transmit amplifier for the KX3. Relatively easy to do at this frequency (even a tube-type amp ckt drug out of an old 1960-70 manual would work). Some of our experimenters have had success converting stereo audio amplifiers into 500-KHz amplifiers with suitable change of input/output transformers and bypassing changes. Of course using a transverter is an option but that is a builder-experimenter option, at present. I actually built one for translating 10.4xx to 4xx KHz by use of a SBL-1 mixer and my 10-MHz OCXO station freq. reference source. The K3 will operate in test mode for running at 10.472-10.478 KHz. For other radios one would chose a ham band such as 80m or 40m to translate down. I will do some testing with my KX3 on transmitting at 470-KHz and have in mind a transistor amp to provide 25w (which I may eventually make if there is a market). Ham radio use of 472-478 KHz will require FCC action to happen in the USA. WRC-12 approves use after Jan 1, 2013. 73, Ed - KL7UW At 07:49 AM 7/8/2012, Wayne Burdick wrote: >Hi Ed, > >The KX3's spec also says, "Note: Sensitivity decreases gradually below >1.5 MHz due to protective high-pass filtering" We did this to >ensure that the PIN diodes in the T/R switch are protected. A fairly >large amount of attenuation is required by the time you get down to >500 kHz or lower. > >We did do some transmit tests in the 470 kHz range. We can easily get >+10 or possibly +20 dBm output at these frequencies, but you'd need an >external filter/amplifier to obtain useful transmit power output. >Given that, I would think that an external receiving converter that >shifted the 0-1 MHz range up to 7-8 MHz on the KX3 would also be a >good solution. The KX3 has transverter bands that can be set up for >this application, allowing the VFO to read correctly when on this >band. The ACC2 GPIO pin could be used to turn the external converter >on/off. > >The K3 has the same high-pass filtering in the main antenna path as >the KX3. But the K3 also provides a way to bypass the filter, by using >the KXV3's RX ANT input (or the XVTR input). > >73, >Wayne >N6KR > > >On Jul 8, 2012, at 12:22 AM, Edward R. Cole wrote: > >>If this is true then the spec on page 51 of the KX3 manual is very >>misleading where is states: >>"310 kHz - 32 MHz and 44-54 MHz..." >> >>I was looking forward to using the KX3 on the new 630m Ham Band >>recently approved by WRC-2012: >>472-478 KHz. The K3 operates down to 490 KHz but no lower so >>unusable on the new ham band. The KX3 "appeared" to be the first >>commercially mfd radio able to operate down there. If not then this >>is a BIG missed opportunity. >> >>I use a Clifton Labs Z-10020 MW BC Band Reject filter (540-1700 KHz) >>which rejects signals inside that band. Signals seen at -50 dBm are >>reduced to the the -110 dBm noise floor, whereas the signals below >>540-KHz are unaffected below about 515 KHz. I have used it with the >>K3 and my SDR-IQ (which tunes to 500-Hz). >> >>There was discussion last fall that the KX3 might be capable of >>transmitting on 630m. >>I would like the official word on this before publishing my paper >>reviewing the KX3 at MUD-2012. >> >>630m will remain the province of the "experimenter" if no commercial >>"shelf-ready" equipment is available. >> >> >>73, Ed - KL7UW >>I run 100w into a 43x122 foot inverted-L on 600m under the license >>WD2XSH/45. >>-- >>Date: Sat, 7 Jul 2012 08:15:31 -0500 (GMT-05:00) >>From: Mike Morrow >>Subject: [Elecraft] KX3 Receive Performance Below 1500 kHz >>To: elecraft@mailman.qth.net >>Message-ID: >> >><242
Re: [Elecraft] Elecraft server down?
Thanks. In a message dated 7/8/2012 10:16:34 A.M. Pacific Daylight Time, olin...@bellsouth.net writes: There have been plenty. 73, Guy. On Sun, Jul 8, 2012 at 9:40 AM,wrote: > Haven't seen any posts since yesterday? > > Mike AC6JA > __ > 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] Elecraft server down?
There have been plenty. 73, Guy. On Sun, Jul 8, 2012 at 9:40 AM, wrote: > Haven't seen any posts since yesterday? > > Mike AC6JA > __ > 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] [KX1] For sale, KX1 paddle kit, the KXPD1
KXPD1 has been sold. Thanks, peh Begin forwarded message: > From: Phil Hystad > Subject: [Elecraft] [KX1] For sale, KX1 paddle kit, the KXPD1 > Date: July 8, 2012 8:28:19 AM PDT > To: Elecraft Reflector > > I bought the KXPD1 thinking that I would use it on my KX1 but I can't bear > the thought of giving up my Begali merely for the ease of portability. > > So, it is for sale. The kit has NOT BEEN assembled. The only thing I did > was the parts inventory (all is there) and it all pieces remain in the > plastic bags as received from Elecraft. Elecraft lists this for $69 but I > will sell it for $35 shipped (I pay for postage) to any US mail location. > International buyers pay for postage as I have no idea how high that can go. > > Please contact off this forum by e-mail. > > 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] ERR12V repair
On 07/Jul 12:17, Mike Clarke wrote: > Hi, > > I'm just preparing to perform the ERR12V repair on my K3, and > notice that in the bag I was sent the pin connectors are > gold-plated but the replacement sockets are not. I thought the > idea of the change to was make the path gold to gold all the way > through... can anyone confirm if this is correct? All, Thanks for the responses to this. I've gone ahead and fitted the parts. I've also had a few queries off-list, so I thought I'd reply to the original post with a summary for future reference. o Firstly, the update is not listed on the mods page. The original thread regarding it can be found here: http://elecraft.365791.n2.nabble.com/Older-K3-100s-can-be-updated-to-avoid-possible-quot-ERR-12V-quot-problem-tt7284312.html#a7285353. o To get the parts, drop a mail to parts@ o In terms of the vintage of affected kit, my K3 is #2847. o I took some photos as I was going, and have posted my method at http://clarkema.org/posts/2012-06/2012-06-08-k3-service.html. I do feel that it would be helpful to have an entry for this on the mods page, with proper instructions. I for one would be extremely vexed if my K3 failed completely in some remote and interesting spot because of a known fault that I could easily have remedied before leaving home. It's all too easy to miss a single thread on the reflector (assuming you even subscribe) but I suspect most people check the mods list on a regular basis, and certainly when planning a trip. 73, -- Mike, M0PRL __ 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] Audio volume problems
Speaking of changing out pots or encoders on the front panel, my four encoder knobs to the right of the column knobs were really stiff to push on. I mean so stiff, I don't think they could ever be removed without some sort of tool(s). Has anyone else had this issue and gotten the knobs removed? I bought extra knobs and thought if I had to remove them, I would maybe slice them along their length carefully with a dremel to release the tension and just replace them. Sent from my iPad On Jul 8, 2012, at 10:02 AM, "Guy Olinger K2AV" wrote: > Those knobs are actual potentiometers, not encoders, acting as voltage > dividers off a fixed voltage, which are followed an an A/D chip which > converts the wipe voltage to a three digit number which is multiplexed > and sent to the MPU. The audio does NOT flow through the pot. The > setting of the pot is turned into numerical advice to the MPU. > > If the voltage on the pot wipe goes out of range or the wipe loses > contact, the number sent to the MPU will be weird. It won't be > scratchy like an analog volume pot gone bad, just go to unpredictable > and undesired volume settings. The pots are not killer to change out, > but you need moderate to good soldering skills to do it. I bunged one > and had to change it out. Done this on both my K2 and K3 now. > > 73, Guy. > > On Sun, Jul 8, 2012 at 10:40 AM, Matt Zilmer wrote: >> Many K3 users have seen this same rotation problem with the AF/SUB and >> RF/SUB controls. Try adjusting the set screw(s). If that doesn't >> work, you may need to contact support for new ones. With early K3s, >> there were some problems with these controls. >> >> Not sure about your audio/volume problem though. I'd contact support >> on this too. >> >> 73, >> matt W6NIA >> >> On Sun, 08 Jul 2012 08:45:35 -0400, you wrote: >> >>> I suddenly came up with several problems related to audio volume on my >>> K3, MCU 4.51. >>> >>> I was listening on USB with slow AGC and I noticed that the volume would >>> suddenly drop and remain low until I hit the T/R button, whereupon it >>> would come back again, and then disappear. I switched to fast AGC and >>> the problem diminished but did not disappear. So I reached for the >>> audio volume control and discovered that it now turns 360 degrees >>> without a stop, although there is a slight detent at the regular >>> stopping point. I tried to turn AGC off, and although the display >>> indicates that it is off, there appears to be no increase in volume. I >>> now feel that the volume is lower than it was when I first built the unit. >>> >>> There may be some troubleshooting to do here. I notice this less with >>> strong signals. I guess I would like to know what to do about the >>> rotation first, and then pursue the overall volume problem. >>> >>> Thank you, >>> >>> Jan, KX2A >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 Receive Performance Below 1500 kHz
Hi Ed, The KX3's spec also says, "Note: Sensitivity decreases gradually below 1.5 MHz due to protective high-pass filtering" We did this to ensure that the PIN diodes in the T/R switch are protected. A fairly large amount of attenuation is required by the time you get down to 500 kHz or lower. We did do some transmit tests in the 470 kHz range. We can easily get +10 or possibly +20 dBm output at these frequencies, but you'd need an external filter/amplifier to obtain useful transmit power output. Given that, I would think that an external receiving converter that shifted the 0-1 MHz range up to 7-8 MHz on the KX3 would also be a good solution. The KX3 has transverter bands that can be set up for this application, allowing the VFO to read correctly when on this band. The ACC2 GPIO pin could be used to turn the external converter on/off. The K3 has the same high-pass filtering in the main antenna path as the KX3. But the K3 also provides a way to bypass the filter, by using the KXV3's RX ANT input (or the XVTR input). 73, Wayne N6KR On Jul 8, 2012, at 12:22 AM, Edward R. Cole wrote: > If this is true then the spec on page 51 of the KX3 manual is very > misleading where is states: > "310 kHz - 32 MHz and 44-54 MHz..." > > I was looking forward to using the KX3 on the new 630m Ham Band > recently approved by WRC-2012: > 472-478 KHz. The K3 operates down to 490 KHz but no lower so > unusable on the new ham band. The KX3 "appeared" to be the first > commercially mfd radio able to operate down there. If not then this > is a BIG missed opportunity. > > I use a Clifton Labs Z-10020 MW BC Band Reject filter (540-1700 KHz) > which rejects signals inside that band. Signals seen at -50 dBm are > reduced to the the -110 dBm noise floor, whereas the signals below > 540-KHz are unaffected below about 515 KHz. I have used it with the > K3 and my SDR-IQ (which tunes to 500-Hz). > > There was discussion last fall that the KX3 might be capable of > transmitting on 630m. > I would like the official word on this before publishing my paper > reviewing the KX3 at MUD-2012. > > 630m will remain the province of the "experimenter" if no commercial > "shelf-ready" equipment is available. > > > 73, Ed - KL7UW > I run 100w into a 43x122 foot inverted-L on 600m under the license > WD2XSH/45. > -- > Date: Sat, 7 Jul 2012 08:15:31 -0500 (GMT-05:00) > From: Mike Morrow > Subject: [Elecraft] KX3 Receive Performance Below 1500 kHz > To: elecraft@mailman.qth.net > Message-ID: > > <24244062.1341666931975.javamail.r...@mswamui-swiss.atl.sa.earthlink.net > > > > Content-Type: text/plain; charset=UTF-8 > > A discussion of KX3 MF lack of sensitivity recently took place > on the KX3 list. The KX3 should not be considered really > usable below about 1500 kHz, as Wayne explsined: > > Original Message (from KX3 list) > >> I thought there was some advantage to AM BCB reception >> to be had with the KXAT3. > > If a KXAT3 is installed, harmonic images are attenuated, > but this has little effect on signal strength. > >> Why wouldn't the T/R PIN diodes be as well protected by >> high pass filtering that rolled off below 400 kHz rather >> than 1500 kHz > > The carrier lifetime of the diodes is roughly 1.5 microseconds. > This means that strong signals at the low end of the broadcast band > could cause IMD (IP2) if not attenuated. The HPF provides > about 20-30 dB of rolloff by this frequency, ensuring that > this isn't a problem. The KX3 is optimized for ham-band use > so this is entirely appropriate. > > Wayne > > > 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 > "Kits made by KL7UW" http://www.kl7uw.com/kits.htm > == > __ > 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] [KX1] For sale, KX1 paddle kit, the KXPD1
I bought the KXPD1 thinking that I would use it on my KX1 but I can't bear the thought of giving up my Begali merely for the ease of portability. So, it is for sale. The kit has NOT BEEN assembled. The only thing I did was the parts inventory (all is there) and it all pieces remain in the plastic bags as received from Elecraft. Elecraft lists this for $69 but I will sell it for $35 shipped (I pay for postage) to any US mail location. International buyers pay for postage as I have no idea how high that can go. Please contact off this forum by e-mail. 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] Audio volume problems
Those knobs are actual potentiometers, not encoders, acting as voltage dividers off a fixed voltage, which are followed an an A/D chip which converts the wipe voltage to a three digit number which is multiplexed and sent to the MPU. The audio does NOT flow through the pot. The setting of the pot is turned into numerical advice to the MPU. If the voltage on the pot wipe goes out of range or the wipe loses contact, the number sent to the MPU will be weird. It won't be scratchy like an analog volume pot gone bad, just go to unpredictable and undesired volume settings. The pots are not killer to change out, but you need moderate to good soldering skills to do it. I bunged one and had to change it out. Done this on both my K2 and K3 now. 73, Guy. On Sun, Jul 8, 2012 at 10:40 AM, Matt Zilmer wrote: > Many K3 users have seen this same rotation problem with the AF/SUB and > RF/SUB controls. Try adjusting the set screw(s). If that doesn't > work, you may need to contact support for new ones. With early K3s, > there were some problems with these controls. > > Not sure about your audio/volume problem though. I'd contact support > on this too. > > 73, > matt W6NIA > > On Sun, 08 Jul 2012 08:45:35 -0400, you wrote: > >>I suddenly came up with several problems related to audio volume on my >>K3, MCU 4.51. >> >>I was listening on USB with slow AGC and I noticed that the volume would >>suddenly drop and remain low until I hit the T/R button, whereupon it >>would come back again, and then disappear. I switched to fast AGC and >>the problem diminished but did not disappear. So I reached for the >>audio volume control and discovered that it now turns 360 degrees >>without a stop, although there is a slight detent at the regular >>stopping point. I tried to turn AGC off, and although the display >>indicates that it is off, there appears to be no increase in volume. I >>now feel that the volume is lower than it was when I first built the unit. >> >>There may be some troubleshooting to do here. I notice this less with >>strong signals. I guess I would like to know what to do about the >>rotation first, and then pursue the overall volume problem. >> >>Thank you, >> >>Jan, KX2A >> >>__ >>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] KAT3 problem
Hi Don, Yes I'm aware of that but thanks for reminding me. Having an RMA first is definitely the proper procedure. Barry KS7DX -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Saturday, July 07, 2012 7:00 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT3 problem Besides, you should *never* just send an Elecraft radio to Watsonville for repair. There are repair depots all over the globe. Contact support, and if warranted, they will request an RSA number for you. When you get the email with the RSA form, fill it out and read the 2nd page to find out where to send it. 73, Don W3FPR On 7/7/2012 5:12 PM, N5GE wrote: > Gary, > > If I were you I'd call Elecraft support before sending the board. > They may give you some tests to make to determine if you have the same problem as Dave. > > __ 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] KAT3 problem
Hi Tom, Yes I'll talk to Gary before I send anything back to the factory. The rig has been back before so I know the procedure. I'll call him tomorrow. Thanks and have a great day. Barry KS7DX -Original Message- From: N5GE [mailto:li...@n5ge.com] Sent: Saturday, July 07, 2012 2:13 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT3 problem Gary, If I were you I'd call Elecraft support before sending the board. They may give you some tests to make to determine if you have the same problem as Dave. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sat, 7 Jul 2012 09:47:09 -0700, "Barry Garratt" wrote: >Hey Dave, > >I'll try that and report back but I'm getting the feeling it's going to >back to the factory. > >Regards, > >Barry KS7DX > > >-Original Message- >From: Dave Van Wallaghen [mailto:w8...@comcast.net] >Sent: Saturday, July 07, 2012 9:15 AM >To: Barry Garratt >Cc: elecraft@mailman.qth.net >Subject: Re: [Elecraft] KAT3 problem > >Hey Barry, > >If you are so inclined, you might try re-seating the LPA board. I did >read a couple of instances where that cleared up the problem. Although, >it did not clear mine up :-( > >Either way, it you wouldn't mind, please post back your findings. I'd >be interested to see if it was the LPA or not. > >Take care & 73, >Dave W8FGU > > > >On 7/7/2012 12:02 PM, Barry Garratt wrote: >> Hi Dave, >> >> Thanks for the info. It looks like mine will be heading back to the >> factory also. >> >> Have a great day. >> >> Barry KS7DX >> >> From: Dave Van Wallaghen [mailto:dvanwallag...@gmail.com] >> Sent: Saturday, July 07, 2012 5:36 AM >> To: Barry Garratt >> Cc: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] KAT3 problem >> >> Barry, >> I just went through the same thing here. It turned out to that I had >> no output from my LPA board. It is currently at Elecraft being >> serviced. I have not heard from them yet as to the exact cause. It's >> only been in for a week or so. >> I used a scope to verify I had RF coming into the board and a logical >> high on the 7T line but no output. >> I found this trying to tune up as you did and saw the same two dashes >> on the display. >> Hope this helps. >> 73, >> Dave W8FGU >> On Jul 7, 2012 1:54 AM, "Barry Garratt" wrote: >> When I hit the ATU TUNE button this evening the tuner sounded like it >> was doing something but instead of the usual display of VSWR as it >> tuned there were only two dash lines. >> >> The problem is not band dependent. >> >> Anyone ever seen this before and if so what was the cure? >> >> Thanks. >> >> Barry KS7DX >> >> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email >> list: http://www.qsl.net/donate.html >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email >> list: http://www.qsl.net/donate.html >> > >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net Please help support this email >list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Audio volume problems
Many K3 users have seen this same rotation problem with the AF/SUB and RF/SUB controls. Try adjusting the set screw(s). If that doesn't work, you may need to contact support for new ones. With early K3s, there were some problems with these controls. Not sure about your audio/volume problem though. I'd contact support on this too. 73, matt W6NIA On Sun, 08 Jul 2012 08:45:35 -0400, you wrote: >I suddenly came up with several problems related to audio volume on my >K3, MCU 4.51. > >I was listening on USB with slow AGC and I noticed that the volume would >suddenly drop and remain low until I hit the T/R button, whereupon it >would come back again, and then disappear. I switched to fast AGC and >the problem diminished but did not disappear. So I reached for the >audio volume control and discovered that it now turns 360 degrees >without a stop, although there is a slight detent at the regular >stopping point. I tried to turn AGC off, and although the display >indicates that it is off, there appears to be no increase in volume. I >now feel that the volume is lower than it was when I first built the unit. > >There may be some troubleshooting to do here. I notice this less with >strong signals. I guess I would like to know what to do about the >rotation first, and then pursue the overall volume problem. > >Thank you, > >Jan, KX2A > >__ >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] Audio volume problems
The 360 degree rotation of the knob could be a cracked knob or loose set screw in the knob. Loosen the set screw in the knob and pull it off. Then inspect it for cracks. If you find no cracks then reinstall it and tighten the set screw GENTLY. After doing the above, if it still rotates 360 degrees, follow Don's suggestion. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sun, 08 Jul 2012 09:12:41 -0400, Don Wilhelm wrote: >Jan, > >It sounds like it may be just a broken AF Gain control. Contact support >- if you have the capability to repair the board yourself, then a part >can be sent to you, but if not, the whole board will have to go in for >repair. > >73, >Don W3FPR >On 7/8/2012 8:45 AM, Jan Ditzian wrote: >> I suddenly came up with several problems related to audio volume on my >> K3, MCU 4.51. >> >> I was listening on USB with slow AGC and I noticed that the volume would >> suddenly drop and remain low until I hit the T/R button, whereupon it >> would come back again, and then disappear. I switched to fast AGC and >> the problem diminished but did not disappear. So I reached for the >> audio volume control and discovered that it now turns 360 degrees >> without a stop, although there is a slight detent at the regular >> stopping point. I tried to turn AGC off, and although the display >> indicates that it is off, there appears to be no increase in volume. I >> now feel that the volume is lower than it was when I first built the unit. >> >> There may be some troubleshooting to do here. I notice this less with >> strong signals. I guess I would like to know what to do about the >> rotation first, and then pursue the overall volume problem. >> >> Thank you, >> >> Jan, KX2A >> > >__ >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 Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member __ 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 encoder backlash?
No "backlash" on #806 or #1055. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Sat, 7 Jul 2012 18:01:42 -0400 (EDT), ac...@aol.com wrote: >I have a factory-built K3 #3215 and have always noticed a significant >amount of backlash on the four encoders located just left of the VFO A knob. >Has this been improved on newer K3's? Is there a replacement option or a >newer front panel available to improve this? >Any info would be appreciated. >Thanks. > > >Mike AC6JA >K3 #3215 >P3 #2039 >KPA500 #809 > > >__ >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] Elecraft server down?
Haven't seen any posts since yesterday? Mike AC6JA __ 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: use at <500-KHz
Thanks, Don, I don't realise KX3 is less sensitive than K3 in listening to loocal AM BC stations. TNX & 73, Johnny VR2XMC 寄件人︰ Don Wilhelm 收件人︰ Johnny Siu 副本(CC)︰ Edward R. Cole ; "Elecraft@mailman.qth.net" 傳送日期︰ 2012年07月8日 (週日) 9:22 PM 主題︰ Re: [Elecraft] KX3: use at <500-KHz Johnny, Here is a related statement by Wayne made yesterday on the KX3 Yahoo group list. --- I frequently use the KX3 in the BC band. I can clearly copy all the same stations with the KX3 that I can hear using other AM- capable radios at my QTH. The KX3's receive sensitivity does fall off by design below about 1.5 MHz (as described below), but in many cases you don't need a lot of sensitivity here due to high atmospheric noise. The exception, of course, is if you're a serious BC-band SWL. In that case you might want to consider a simple broadcast-band receiving converter using an IF of say 7 MHz. The KX3 provides up to 9 built-in transverter bands, one of which could be programmed for this purpose so the VFO would still display the actual target frequencies. 73, Wayne N6KR - I did not copy his "described below" text in the interest of brevity. Check the Yahoo group posts if you are interested in all the reasons. 73, Don W3FPR On 7/8/2012 8:46 AM, Johnny Siu wrote: > Hello Edward, > > For my K3, I got high S meter readings for local MF AM BC stations. However, > for my KX3, I bearly got a reading on the S meter for the same station. > > > TNX & 73, > > > Johnny VR2XMC > > 寄件人︰ Edward R. Cole > 收件人︰ Art Nienhouse ; Elecraft@mailman.qth.net > 傳送日期︰ 2012年07月8日 (週日) 3:48 PM > 主題︰ Re: [Elecraft] KX3: use at <500-KHz > > Art, > > Thanks for your report. Tonight I connected my 600m band inverted-L > and found I could copy am BC stations local and in Anchorage 70-mi > away. I also could copy the ADIS station on 380-KHz and the RGPS > beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it > registered about S4 on the KX3. > > So with a 20-dB preamp sensitivity probably can be restored on > 630m. The final question then is whether the KX3 is capable of > transmitting there. I would be satisfied with 0-10 dBm as that is > all I need to drive my 100w amp (converted NDB transmitter). > > I have been received 2800 km away on 495-KHz. > > 73, Ed - KL7UW > > At 09:51 AM 7/7/2012, Art Nienhouse wrote: >> Ed >> My KX3 copies down to .540 ok but the frequency read out is not >> accurate the s meter >> report is s3 across the broadcast band the copy is ok however. >> >> Regards >> Art >> ka9zap >> >> >> >> On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>> I just tried reception on the am BC band and 500-KHz but the receiver >>> seems deaf there. There was mention of using the suto-tuner to >>> improve reception below the BC band, but how is this >>> accomplished? Or is this waiting for firmware to implement? How >>> about Tx capability down there? >>> >>> > > 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 > "Kits made by KL7UW" http://www.kl7uw.com/kits.htm > == > __ > 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] KX3: use at <500-KHz
Johnny, Here is a related statement by Wayne made yesterday on the KX3 Yahoo group list. --- I frequently use the KX3 in the BC band. I can clearly copy all the same stations with the KX3 that I can hear using other AM- capable radios at my QTH. The KX3's receive sensitivity does fall off by design below about 1.5 MHz (as described below), but in many cases you don't need a lot of sensitivity here due to high atmospheric noise. The exception, of course, is if you're a serious BC-band SWL. In that case you might want to consider a simple broadcast-band receiving converter using an IF of say 7 MHz. The KX3 provides up to 9 built-in transverter bands, one of which could be programmed for this purpose so the VFO would still display the actual target frequencies. 73, Wayne N6KR - I did not copy his "described below" text in the interest of brevity. Check the Yahoo group posts if you are interested in all the reasons. 73, Don W3FPR On 7/8/2012 8:46 AM, Johnny Siu wrote: > Hello Edward, > > For my K3, I got high S meter readings for local MF AM BC stations. However, > for my KX3, I bearly got a reading on the S meter for the same station. > > > TNX & 73, > > > Johnny VR2XMC > > 寄件人︰ Edward R. Cole > 收件人︰ Art Nienhouse ; Elecraft@mailman.qth.net > 傳送日期︰ 2012年07月8日 (週日) 3:48 PM > 主題︰ Re: [Elecraft] KX3: use at <500-KHz > > Art, > > Thanks for your report. Tonight I connected my 600m band inverted-L > and found I could copy am BC stations local and in Anchorage 70-mi > away. I also could copy the ADIS station on 380-KHz and the RGPS > beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it > registered about S4 on the KX3. > > So with a 20-dB preamp sensitivity probably can be restored on > 630m. The final question then is whether the KX3 is capable of > transmitting there. I would be satisfied with 0-10 dBm as that is > all I need to drive my 100w amp (converted NDB transmitter). > > I have been received 2800 km away on 495-KHz. > > 73, Ed - KL7UW > > At 09:51 AM 7/7/2012, Art Nienhouse wrote: >> Ed >> My KX3 copies down to .540 ok but the frequency read out is not >> accurate the s meter >> report is s3 across the broadcast band the copy is ok however. >> >> Regards >> Art >> ka9zap >> >> >> >> On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>> I just tried reception on the am BC band and 500-KHz but the receiver >>> seems deaf there. There was mention of using the suto-tuner to >>> improve reception below the BC band, but how is this >>> accomplished? Or is this waiting for firmware to implement? How >>> about Tx capability down there? >>> >>> > > 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 > "Kits made by KL7UW" http://www.kl7uw.com/kits.htm > == > __ > 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] Audio volume problems
Jan, It sounds like it may be just a broken AF Gain control. Contact support - if you have the capability to repair the board yourself, then a part can be sent to you, but if not, the whole board will have to go in for repair. 73, Don W3FPR On 7/8/2012 8:45 AM, Jan Ditzian wrote: > I suddenly came up with several problems related to audio volume on my > K3, MCU 4.51. > > I was listening on USB with slow AGC and I noticed that the volume would > suddenly drop and remain low until I hit the T/R button, whereupon it > would come back again, and then disappear. I switched to fast AGC and > the problem diminished but did not disappear. So I reached for the > audio volume control and discovered that it now turns 360 degrees > without a stop, although there is a slight detent at the regular > stopping point. I tried to turn AGC off, and although the display > indicates that it is off, there appears to be no increase in volume. I > now feel that the volume is lower than it was when I first built the unit. > > There may be some troubleshooting to do here. I notice this less with > strong signals. I guess I would like to know what to do about the > rotation first, and then pursue the overall volume problem. > > Thank you, > > Jan, KX2A > __ 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 encoder backlash?
Mines 4K something and no back lash. Chuck, KE9UW aka Jack, BMW Motorcycles BMWMOA #224 From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on behalf of Bill [b...@w2blc.net] Sent: Sunday, July 08, 2012 8:04 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 encoder backlash? Built my K3 in February 2012 - no backlash noted on any controls. Bill W2BLC -- IN GOD I TRUST (but, NOT a single politician) __ 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 encoder backlash?
Built my K3 in February 2012 - no backlash noted on any controls. Bill W2BLC -- IN GOD I TRUST (but, NOT a single politician) __ 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: use at <500-KHz
Hello Edward, For my K3, I got high S meter readings for local MF AM BC stations. However, for my KX3, I bearly got a reading on the S meter for the same station. TNX & 73, Johnny VR2XMC 寄件人︰ Edward R. Cole 收件人︰ Art Nienhouse ; Elecraft@mailman.qth.net 傳送日期︰ 2012年07月8日 (週日) 3:48 PM 主題︰ Re: [Elecraft] KX3: use at <500-KHz Art, Thanks for your report. Tonight I connected my 600m band inverted-L and found I could copy am BC stations local and in Anchorage 70-mi away. I also could copy the ADIS station on 380-KHz and the RGPS beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it registered about S4 on the KX3. So with a 20-dB preamp sensitivity probably can be restored on 630m. The final question then is whether the KX3 is capable of transmitting there. I would be satisfied with 0-10 dBm as that is all I need to drive my 100w amp (converted NDB transmitter). I have been received 2800 km away on 495-KHz. 73, Ed - KL7UW At 09:51 AM 7/7/2012, Art Nienhouse wrote: >Ed >My KX3 copies down to .540 ok but the frequency read out is not >accurate the s meter >report is s3 across the broadcast band the copy is ok however. > >Regards >Art >ka9zap > > > >On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>I just tried reception on the am BC band and 500-KHz but the receiver >>seems deaf there. There was mention of using the suto-tuner to >>improve reception below the BC band, but how is this >>accomplished? Or is this waiting for firmware to implement? How >>about Tx capability down there? >> >> 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 "Kits made by KL7UW" http://www.kl7uw.com/kits.htm == __ 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] Audio volume problems
I suddenly came up with several problems related to audio volume on my K3, MCU 4.51. I was listening on USB with slow AGC and I noticed that the volume would suddenly drop and remain low until I hit the T/R button, whereupon it would come back again, and then disappear. I switched to fast AGC and the problem diminished but did not disappear. So I reached for the audio volume control and discovered that it now turns 360 degrees without a stop, although there is a slight detent at the regular stopping point. I tried to turn AGC off, and although the display indicates that it is off, there appears to be no increase in volume. I now feel that the volume is lower than it was when I first built the unit. There may be some troubleshooting to do here. I notice this less with strong signals. I guess I would like to know what to do about the rotation first, and then pursue the overall volume problem. Thank you, Jan, KX2A __ 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 Macro toggle
Ok, so Dick and Bill suggested two similar approaches, one is to save a completely empty macro, one with just ";" in the macro. Both work the same way, and pressing M4-HOLD will flash "MACRO 2" and do nothing else, as expected. I don't remember how a "virgin" K3 behaves wrt empty M-keys, but I suspect that what John observed is the expected behaviour. Anyway, this mostly boils down to a curiosity, and the empty macro trick does what I want to achieve for the moment, until I'll come up with anothe use for it. Thanks to all for your attention Pf > "KU4AF" == KU4AF writes: KU4AF> Hmm, further investigation shows this isn't the whole story. Recording a CW KU4AF> or voice message to an Mx key does clear its MxT and MxH macro assignments, KU4AF> but if I assign a new macro to either MxT or MxH (but not both), that macro KU4AF> will then operate for both MxTap and MxHold. KU4AF> This oddity doesn't prevent assigning another macro to the unintended Tap or KU4AF> Hold, but it does seem buggish. I guess if you really want the unused key KU4AF> function to do nothing you could assign an empty macro to it. KU4AF> John, KU4AF KU4AF> Pittsboro, NC KU4AF> Pf, KU4AF> You can clear the macro from the M1-M4 keys by storing a CW or voice message KU4AF> there. Just tap the REC key, then the M key, record the message and tap the KU4AF> REC key again. If you don't want a message there, just tap the REC key KU4AF> without recording anything. KU4AF> John, KU4AF KU4AF> Pittsboro, NC KU4AF> Pierfrancesco Caci wrote >> >> Many thanks for this nice example. Now, I would like to free up M4-HOLD, >> but I can't find anywhere in the manuals how to delete a macro >> assignment from one of the programmable keys. Is it possible at all, or >> should I just wait for when I come up with my next macro and just >> replace it? >> >> Pf >> KU4AF> -- KU4AF> View this message in context: http://elecraft.365791.n2.nabble.com/K3-Macro-toggle-tp7558366p7558817.html KU4AF> Sent from the Elecraft mailing list archive at Nabble.com. KU4AF> __ KU4AF> Elecraft mailing list KU4AF> Home: http://mailman.qth.net/mailman/listinfo/elecraft KU4AF> Help: http://mailman.qth.net/mmfaq.htm KU4AF> Post: mailto:Elecraft@mailman.qth.net KU4AF> This list hosted by: http://www.qsl.net KU4AF> Please help support this email list: http://www.qsl.net/donate.html -- Pierfrancesco Caci, ik5pvx __ 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: use at <500-KHz
Art, Thanks for your report. Tonight I connected my 600m band inverted-L and found I could copy am BC stations local and in Anchorage 70-mi away. I also could copy the ADIS station on 380-KHz and the RGPS beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it registered about S4 on the KX3. So with a 20-dB preamp sensitivity probably can be restored on 630m. The final question then is whether the KX3 is capable of transmitting there. I would be satisfied with 0-10 dBm as that is all I need to drive my 100w amp (converted NDB transmitter). I have been received 2800 km away on 495-KHz. 73, Ed - KL7UW At 09:51 AM 7/7/2012, Art Nienhouse wrote: >Ed >My KX3 copies down to .540 ok but the frequency read out is not >accurate the s meter >report is s3 across the broadcast band the copy is ok however. > >Regards >Art >ka9zap > > > >On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>I just tried reception on the am BC band and 500-KHz but the receiver >>seems deaf there. There was mention of using the suto-tuner to >>improve reception below the BC band, but how is this >>accomplished? Or is this waiting for firmware to implement? How >>about Tx capability down there? >> >> 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 "Kits made by KL7UW" http://www.kl7uw.com/kits.htm == __ 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 Receive Performance Below 1500 kHz
If this is true then the spec on page 51 of the KX3 manual is very misleading where is states: "310 kHz - 32 MHz and 44-54 MHz..." I was looking forward to using the KX3 on the new 630m Ham Band recently approved by WRC-2012: 472-478 KHz. The K3 operates down to 490 KHz but no lower so unusable on the new ham band. The KX3 "appeared" to be the first commercially mfd radio able to operate down there. If not then this is a BIG missed opportunity. I use a Clifton Labs Z-10020 MW BC Band Reject filter (540-1700 KHz) which rejects signals inside that band. Signals seen at -50 dBm are reduced to the the -110 dBm noise floor, whereas the signals below 540-KHz are unaffected below about 515 KHz. I have used it with the K3 and my SDR-IQ (which tunes to 500-Hz). There was discussion last fall that the KX3 might be capable of transmitting on 630m. I would like the official word on this before publishing my paper reviewing the KX3 at MUD-2012. 630m will remain the province of the "experimenter" if no commercial "shelf-ready" equipment is available. 73, Ed - KL7UW I run 100w into a 43x122 foot inverted-L on 600m under the license WD2XSH/45. -- Date: Sat, 7 Jul 2012 08:15:31 -0500 (GMT-05:00) From: Mike Morrow Subject: [Elecraft] KX3 Receive Performance Below 1500 kHz To: elecraft@mailman.qth.net Message-ID: <24244062.1341666931975.javamail.r...@mswamui-swiss.atl.sa.earthlink.net> Content-Type: text/plain; charset=UTF-8 A discussion of KX3 MF lack of sensitivity recently took place on the KX3 list. The KX3 should not be considered really usable below about 1500 kHz, as Wayne explsined: Original Message (from KX3 list) > I thought there was some advantage to AM BCB reception > to be had with the KXAT3. If a KXAT3 is installed, harmonic images are attenuated, but this has little effect on signal strength. > Why wouldn't the T/R PIN diodes be as well protected by > high pass filtering that rolled off below 400 kHz rather > than 1500 kHz The carrier lifetime of the diodes is roughly 1.5 microseconds. This means that strong signals at the low end of the broadcast band could cause IMD (IP2) if not attenuated. The HPF provides about 20-30 dB of rolloff by this frequency, ensuring that this isn't a problem. The KX3 is optimized for ham-band use so this is entirely appropriate. Wayne 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 "Kits made by KL7UW" http://www.kl7uw.com/kits.htm == __ 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
