Re: [Elecraft] KPA500 - stacking possibilites
Can we see some pictures of your setup? Henk PA5KT Op 11-05-2011 4:14, Dick Dievendorff schreef: > Just for operational convenience I'd consider stacking them the other way, > with the K3 VFO A knob at a convenient height for tuning and the amplifier > above the K3. > > I've found some very handy open-shelving bamboo "shoe racks" at CostCo that > are doing the job for me. My amplifier is about 2 inches above the K3. The > rack is wide enough for a K3, P3, and another box such as a rotator > controller or a US Interface Navigator. The 2nd shelf hosts a second K3 and > a KPA500. The top shelf has two speakers and various junk that I gather. > > I've found these racks so useful that I have 5 or 6 of them. I can hold QSL > boxes on them and some plastic shoe boxes that hold various projects. I > have a lot of little projects and boxes. > > Dick, K6KR > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ai6ii > Sent: Tuesday, May 10, 2011 6:59 PM > To: Elecraft@mailman.qth.net > Subject: [Elecraft] KPA500 - stacking possibilites > > Now that I have received confirmation of the delivery, I need finalize where > I am going to place my new KPA500. Given a very limited desk size (ony 34 > inches wide), I wonder if the K3 can be stacked on top of the KPA500. I > undertand from earlier posts that there needs to be a minimum half inch > clearance on top of the KPA500 for the air intake grill. Has any FTer > stacked the two boxes to see if they work without generating too much heat? > > ..mike AI6II > __ -- Henk Remijn PA5KT email: pa...@remijn.net www: www.pa5kt.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] Plasma TV Noise any ideas on how to filter it out.
Speaking of plasma displays, does anyone know what the display type is for these new billboards I see popping up all over town here in the North Texas area that appear to be either LCD or plasma? When I drive by them there is a lot of noise at HF and VHF and there is one about a mile from me that I can point toward with an 18 element Yagi-Uda on 2m and get a lot of noise. Looks like another BPL type of fight coming... 73, Tom Amateur Radio Operator N5GE On Tue, 10 May 2011 18:19:01 -0700 (PDT), Al Lorona wrote: >My next-door neighbor was probably one of the early adopters of plasma TV >several years ago. > >One night at bedtime I switched on the AM radio and was met by severe buzz all >over the dial. Not a single station was listenable. I could hear the buzz all >the way up to 10 meters. It only took me a few minutes to determine that it >was >coming from my neighbor's house. > >I informed him the next day. Lucky for me, he is the type of guy who can't >stand >the idea that a brand-new device of his is causing pollution-- he saw it as a >defect. And, of course, his own AM radios were affected, too. He had a >Panasonic >tech out there in a couple of days. I don't know what the tech did, but he >managed to reduce the noise by about 10 dB though he never eliminated it >entirely. I've had to live with it ever since. > >Since then I have said that the two things that have the most potential to >kill >HF ham radio are homeowners' associations and plasma TVs. > >Pray that your neighbors don't buy one of these evil devices. > >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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 with K3 in TUNE mode?
Hello Randy, You should put the Amplifier in standby and let the tuner tune from the K3's Tune power. That applies to all amplifiers. It doesn't make any difference what brand of amplifier or what type of tuner you have you have. The safe way to tune a tuner before applying amplifier power is what I described above, no matter what it's final output will be. 73, Tom Amateur Radio Operator N5GE On Tue, 10 May 2011 21:49:05 -0500, Randy Farmer wrote: >I'm busily preparing for my new KPA500 and working out all the station >interface details. One of my antennas uses an SGC SG-235 remote tuner, >which will support the amp's 500W output but must be tuned at lower >power. I currently just hold the K3's TUNE button to generate about 20W >to tune the SG-235. Once the tuner has found and memorized a match at a >given frequency, it only takes a very short burst of low power RF to >reset on QSY, but it really needs to be done at 100W or less. This is no >problem with the barefoot K3 -- I can recall the tune setup with a >couple of dashes from the keyer. This technique would be disastrous >once the KPA500 is online, so I'm clearly going to need a way to >initially transmit at lower power after a band change to wake the tuner >up. I realize I could select the menu option to drop the amp offline >after every band change, but since I need to turn the amp off only with >one of several antennas, this is a lot of ergonomic overhead. > >With the K3 and KPA500 integrated and talking via the AUXBUS will the >firmware keep the amp offline when the K3 is in TUNE mode? This would >be really useful for my particular setup, and for anyone who uses a >remote tuner. I've looked over the manual for the KPA500 and it says >nothing about the behavior in this case. > >If the amp stays live in TUNE, perhaps a future revision of the firmware >could present a menu item to let the user choose whether or not the amp >will be enabled in TUNE mode. > >73... >Randy, W8FN >__ >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] Interface KRC2 with MK2R
> The KRC2 does analog Icom band decoding, not CI-V. MK2R+ can not regenerate Icom analog. In that case, MK2R+ should be used in the HEX/BCD mode or the KRC-2 connected directly to the Icom transceivers. If the KRC-2 is connected directly to the rig, it could be used for BPF selection based on the band and another decoder can be driven from MK2R+ for antenna selection (multiple/alternate antennas per band) using the microHAM Control Protocol data from N1MM Logger. 73, ... Joe Subich, W4TV microHAM America, LLC. http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM e-mail: supp...@microham.com On 5/10/2011 10:56 PM, Jack Brindle wrote: > The KRC2 does analog Icom band decoding, not CI-V. When not set for BCD > band input, it outputs BCD data on those pins. It might be possible > to have the KRC2 decode the Icom analog, then output band selections > for antennas, and BCD to drive something else. > > Jack Brindle, W6FB > > > On May 10, 2011, at 5:39 PM, Joe Subich, W4TV wrote: > >> >>> I used my two KRC2s for several years with my 756Pro3s and the CI-V >>> decoding worked just fine. >> >> I must have missed the CI-V decoding. If that's the case, MK2R+ can >> (re)generate CI-V data on the ACC port (again one for each radio) >> which can be fed to the KRC-2. The KRC-2 and MK2R can not be connected >> in parallel to the transceiver. >> >> 73, >> >> ... Joe Subich, W4TV >> microHAM America, LLC. >> http://www.microHAM-USA.com >> http://groups.yahoo.com/group/microHAM >> >> e-mail: supp...@microham.com >> >> >> On 5/10/2011 8:31 PM, Ed Muns wrote: >>> I used my two KRC2s for several years with my 756Pro3s and the CI-V decoding >>> worked just fine. >>> >>> 73, >>> Ed - W0YK >>> - >>> Ed Muns >>> www.w0yk.com >>> >>> >>> -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Subich, W4TV Sent: Tuesday, May 10, 2011 5:17 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Interface KRC2 with MK2R The answer is yes. Since the KRC-2 does not decode Icom CI-V data, configure MK2R to output HEX/BCD "Band Data" on the ACC ports (one for each transceiver) and connect that BCD data to the "Yaesu" inputs of the KRC-2 (again, one for each rig). You have two choices for the source of HEX/BCD data ... option 1 is to have MK2R/Router generate the HEX/BCD code based on the frequency returned by the transceiver (CAT decode) while option 2 is to allow the logging program (N1MM Logger or Win-Test) to set the appropriate output using the microHAM Control Protocol. This capability is not limited to the KRC-2 ... any decoder capable of HEX to 1 of 16 or BCD to 1 of 10 decoding (e.g., TopTen BD-Y or W9XT BCD-10, etc.) will work the same way. 73, ... Joe Subich, W4TV microHAM America, LLC. http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM e-mail: supp...@microham.com On 5/10/2011 6:14 PM, Robert Bajuk wrote: > Hi, > > Is there a way to connect KRC2 to the MK2R outputs in order to switch > BPF / Antennas with Icom radios? > > Regards, > > Robert -- __ 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] [K2] Remote KPA100 Bias Current Adjustment
Brian, If the PA idling current was adjusted to 400 ma (increase over RX current), then the KPA100 bias should be correct whether operated in the base K2 enclosure or in a remote enclosure. In other words, it should make no difference whether it is mounted on the base K2 or in an external enclosure. If you want to do a double check just to be certain, then by all means do it. The current during the test (CW Test mode - which produces no RF, and TUNE) should increase the current draw by 400 ma over the receive current draw. The Receive current draw by the KPA100 will be much smaller with the KPA100 mounted remotely. 73, Don W3FPR On 5/11/2011 12:25 AM, Brian - N5BCN wrote: > Hi all, > > I recently completed a KPA100 and initially did the testing in my K2 as a > K2/100. > > The ultimate goal, however, was to remote it in a EC2 enclosure with a > KAT100-2. The KPA100 is now successfully integrated with the KAT100-2. > > The question: should I redo the bias current adjustment now since the > original adjustment was made in the K2 and now it's in the KAT100-2? > > 73 > > __ 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 - How much supply voltage is too much?
Very true indeed. The price for a decent regulated dc supply has dropped for the past years. Sent from my iPhone 4 Don Wilhelm 於 2011年5月11日 上午11:44 寫道： > David, > > I have many times commented negatively on the use of unregulated wall > warts for use with any radio because the no load (low load) voltage can > be substantially greater than the rated voltage (the specified voltage > is only at full load). Many 12 volt wall warts will develop 17 volts or > more at no load. Those power supplies intended for laptop computers may > do the job, but still, I shudder at using them unmodified, and that does > not speak to any potential spurious responses (some call them "birdies") > coming from the power supply. > > Regulated wall warts are a different matter (birdies not considered) - > if they will provide the required current at 13.8 volts or so, then > there is no harm in using them, but the availability of 13.8 volt > regulated wall-warts is close to zero at the sources I normally use - it > seems all the available ones with sufficient current that I have located > are unregulated. > > Use wall-warts and computer power supplies at your own peril. For me, I > would not subject any radio to such a power source. With the K3 in > particular, if one has spent upwards of $1.5k for the radio, then why > "go cheap" on the power source. Spend a few extra dollars and obtain a > good 13.8 volt power supply - you will be more satisfied in the long run. > > 73, > Don W3FPR > > On 5/10/2011 9:04 PM, David Gilbert wrote: >> Didn't someone here not too long ago post some information on the >> unreliable voltage regulation of many wallwart/laptop supplies? Maybe >> it wasn't this reflector. In general, though, I believe the thread >> mentioned that many of those supplies assume a load, and under no load >> conditions the voltage often went up several volts. The K3 has it's own >> internal voltage regulators, but I'm not sure I'd want to subject them >> to that sort of over voltage at turn on. >> >> Dave AB7E >> > __ > 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] [K2] Remote KPA100 Bias Current Adjustment
Hi all, I recently completed a KPA100 and initially did the testing in my K2 as a K2/100. The ultimate goal, however, was to remote it in a EC2 enclosure with a KAT100-2. The KPA100 is now successfully integrated with the KAT100-2. The question: should I redo the bias current adjustment now since the original adjustment was made in the K2 and now it's in the KAT100-2? 73 N5BCN - Brian - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Remote-KPA100-Bias-Current-Adjustment-tp6350558p6350558.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: How to set Split in PSK31 Data mode
> I was glad to see Luis' question on this as I ran into this issue as > well using PSK over the weekend, and though HRD has a split mode, it > wasn't as intuitive or as handy as just being able to invoke a split > mode using the VFOs. If one is using DATA A as appropriate for PSK31 with HRD, you should be able to invoke split. Note *BOTH* VFOs must be in DATA A before one can invoke split. Split is not applicable in PSK D mode (paddle -> DATA) as that is apparently a limitation in the DSP implementation at the present time. 73, ... Joe, W4TV On 5/10/2011 10:36 PM, S Kosmetatos wrote: > Hey guys, > > I was glad to see Luis' question on this as I ran into this issue as well > using PSK over the weekend, and though HRD has a split mode, it wasn't as > intuitive or as handy as just being able to invoke a split mode using the > VFOs. > > Is this working as designed for this particular data mode, or am I too > missing something in the configuration? > > Thanks, > > Kos, N4NIA > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Luis V. Romero > Sent: Sunday, May 08, 2011 12:20 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3: How to set Split in PSK31 Data mode > > Hi all: > > A local friend brought this to my attention. > > Seems he is trying to set Split on PSK31 using the radio built in PSK31 > keyer/decoder and terminal via RS232. When he tries to set Split, the radio > tells him "SPL N/A". > > I tried this, and I can set Split to function normally in RTTY, both AFSK > and FSK, but I get the same indication when I try to set a Split using PSK > 31. Im not a digital mode person, but I do understand that you can do this > sort of thing using a computer decoder. My friend prefers not to use a > computer, and really enjoys the internal PSK transmit/receive feature using > the CW paddkes. > > He tells me the manual does not explain the issue. He's right! > > He does not have a second receiver. I do, and can work around the issue > this way. I can also work around the issue by using XIT, but it is > cumbersome. > > Is this a firmware bug or is this normal? What's the secret to setting > split in PSK31? > > Thanks for the input! > > -lu-w4lt- > K3 # 3192 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1325 / Virus Database: 1500/3624 - Release Date: 05/08/11 > > __ > 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: How to set Split in PSK31 Data mode
I am puzzled as to why split would be used in PSK-31??? Given the mode it is, the band width used etc, etc.. I have not come across stations operating split on PSK-31 but then that is most likely my fault as I don't use that mode very often nowadays...:-) 73's Gary On 11 May 2011 12:36, S Kosmetatos wrote: > Hey guys, > > I was glad to see Luis' question on this as I ran into this issue as well > using PSK over the weekend, and though HRD has a split mode, it wasn't as > intuitive or as handy as just being able to invoke a split mode using the > VFOs. > > Is this working as designed for this particular data mode, or am I too > missing something in the configuration? > > Thanks, > > Kos, N4NIA > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Luis V. Romero > Sent: Sunday, May 08, 2011 12:20 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3: How to set Split in PSK31 Data mode > > Hi all: > > A local friend brought this to my attention. > > Seems he is trying to set Split on PSK31 using the radio built in PSK31 > keyer/decoder and terminal via RS232. When he tries to set Split, the > radio > tells him "SPL N/A". > > I tried this, and I can set Split to function normally in RTTY, both AFSK > and FSK, but I get the same indication when I try to set a Split using PSK > 31. Im not a digital mode person, but I do understand that you can do this > sort of thing using a computer decoder. My friend prefers not to use a > computer, and really enjoys the internal PSK transmit/receive feature using > the CW paddkes. > > He tells me the manual does not explain the issue. He's right! > > He does not have a second receiver. I do, and can work around the issue > this way. I can also work around the issue by using XIT, but it is > cumbersome. > > Is this a firmware bug or is this normal? What's the secret to setting > split in PSK31? > > Thanks for the input! > > -lu-w4lt- > K3 # 3192 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1325 / Virus Database: 1500/3624 - Release Date: 05/08/11 > > __ > 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 > -- VK4FD - Motorhome Mobile Elecraft Equipment K3 #679, KPA-500 #018 Living the dream!!! __ 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 - How much supply voltage is too much?
David, I have many times commented negatively on the use of unregulated wall warts for use with any radio because the no load (low load) voltage can be substantially greater than the rated voltage (the specified voltage is only at full load). Many 12 volt wall warts will develop 17 volts or more at no load. Those power supplies intended for laptop computers may do the job, but still, I shudder at using them unmodified, and that does not speak to any potential spurious responses (some call them "birdies") coming from the power supply. Regulated wall warts are a different matter (birdies not considered) - if they will provide the required current at 13.8 volts or so, then there is no harm in using them, but the availability of 13.8 volt regulated wall-warts is close to zero at the sources I normally use - it seems all the available ones with sufficient current that I have located are unregulated. Use wall-warts and computer power supplies at your own peril. For me, I would not subject any radio to such a power source. With the K3 in particular, if one has spent upwards of $1.5k for the radio, then why "go cheap" on the power source. Spend a few extra dollars and obtain a good 13.8 volt power supply - you will be more satisfied in the long run. 73, Don W3FPR On 5/10/2011 9:04 PM, David Gilbert wrote: > Didn't someone here not too long ago post some information on the > unreliable voltage regulation of many wallwart/laptop supplies? Maybe > it wasn't this reflector. In general, though, I believe the thread > mentioned that many of those supplies assume a load, and under no load > conditions the voltage often went up several volts. The K3 has it's own > internal voltage regulators, but I'm not sure I'd want to subject them > to that sort of over voltage at turn on. > > Dave AB7E > __ 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] Fw: kio2 5v reg substitution
John, I would think that would be a suitable substitute. The supply voltage is 12 volts, so there is not need for a low dropout regulator. 73, Don W3FPR On 5/10/2011 8:50 PM, John Cooper wrote: > that’s an L7805CV > > -Original Message- > From: John Cooper > Sent: Tuesday, May 10, 2011 7:43 PM > To: elecraft ; d...@w3fpr.com > Subject: [Elecraft] kio2 5v reg substitution > > Can I substitute the 78l05 (u2) 5v regulator on the kio2 with a l7805cv? > __ > 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] Plasma TV Noise any ideas on how to filter it out.
You guys are aware, I suppose, that interference of this level and duration clearly qualifies as the type of interference that merits direct FCC intervention. File a complaint. The resolution process will take some time, but you will win in the end. The FCC has the power to force your neighbor to stop using the interfering device. But, remember the golden rule of interference: "If no one complains, it's not interference".Unless you raise an official complaint, you have no one but ourself to complain to. One thing that works almost every time is this correct statement: "Your TV is not supposed to radiate interference, but it clearly is. It certainly is not supposed to transmit signals. That means it is defective somehow. I have no idea what the defect could be but, your TV _is_ an electrical device, and if it is defective who knows what could happen. I hope it doesn't cause a fire!" Works best if mentioned within earshot of the neighbors wife. Good luck. - Jim, KL7CC Steve Ellington wrote: > Same thing here but the neighbor is no help other than allowing me to buy > them a new TV. Theirs is a Samsung 58" plasma. Forget using any kind of line > filters. The noise is radiated from the SCREENstraight out. > After months of experimentation, the only cure has been the MFJ-1026 and it > works magic! Having a K3 with LP-PAN or P3 makes adjustments easy. Otherwise > it would be a real pain to tweak. > You do need decent noise receiving antenna for the 1026. The K3 has the > RX-IN/OUT jacks which allows to interface the 1026 with ease and retain your > QSK without using the MFJ internal relay. > Contact me for any further info. 73 > > Steve > N4LQ > - Original Message - > From: "Al Lorona" > To: > Sent: Tuesday, May 10, 2011 9:19 PM > Subject: Re: [Elecraft] Plasma TV Noise any ideas on how to filter it out. > > > My next-door neighbor was probably one of the early adopters of plasma TV > several years ago. > > One night at bedtime I switched on the AM radio and was met by severe buzz > all > over the dial. Not a single station was listenable. I could hear the buzz > all > the way up to 10 meters. It only took me a few minutes to determine that it > was > coming from my neighbor's house. > > I informed him the next day. Lucky for me, he is the type of guy who can't > stand > the idea that a brand-new device of his is causing pollution-- he saw it as > a > defect. And, of course, his own AM radios were affected, too. He had a > Panasonic > tech out there in a couple of days. I don't know what the tech did, but he > managed to reduce the noise by about 10 dB though he never eliminated it > entirely. I've had to live with it ever since. > > Since then I have said that the two things that have the most potential to > kill > HF ham radio are homeowners' associations and plasma TVs. > > Pray that your neighbors don't buy one of these evil devices. > > 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 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] KPA500 with K3 in TUNE mode?
I'm busily preparing for my new KPA500 and working out all the station interface details. One of my antennas uses an SGC SG-235 remote tuner, which will support the amp's 500W output but must be tuned at lower power. I currently just hold the K3's TUNE button to generate about 20W to tune the SG-235. Once the tuner has found and memorized a match at a given frequency, it only takes a very short burst of low power RF to reset on QSY, but it really needs to be done at 100W or less. This is no problem with the barefoot K3 -- I can recall the tune setup with a couple of dashes from the keyer. This technique would be disastrous once the KPA500 is online, so I'm clearly going to need a way to initially transmit at lower power after a band change to wake the tuner up. I realize I could select the menu option to drop the amp offline after every band change, but since I need to turn the amp off only with one of several antennas, this is a lot of ergonomic overhead. With the K3 and KPA500 integrated and talking via the AUXBUS will the firmware keep the amp offline when the K3 is in TUNE mode? This would be really useful for my particular setup, and for anyone who uses a remote tuner. I've looked over the manual for the KPA500 and it says nothing about the behavior in this case. If the amp stays live in TUNE, perhaps a future revision of the firmware could present a menu item to let the user choose whether or not the amp will be enabled in TUNE mode. 73... Randy, W8FN __ 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: How to set Split in PSK31 Data mode
Hey guys, I was glad to see Luis' question on this as I ran into this issue as well using PSK over the weekend, and though HRD has a split mode, it wasn't as intuitive or as handy as just being able to invoke a split mode using the VFOs. Is this working as designed for this particular data mode, or am I too missing something in the configuration? Thanks, Kos, N4NIA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Luis V. Romero Sent: Sunday, May 08, 2011 12:20 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3: How to set Split in PSK31 Data mode Hi all: A local friend brought this to my attention. Seems he is trying to set Split on PSK31 using the radio built in PSK31 keyer/decoder and terminal via RS232. When he tries to set Split, the radio tells him "SPL N/A". I tried this, and I can set Split to function normally in RTTY, both AFSK and FSK, but I get the same indication when I try to set a Split using PSK 31. Im not a digital mode person, but I do understand that you can do this sort of thing using a computer decoder. My friend prefers not to use a computer, and really enjoys the internal PSK transmit/receive feature using the CW paddkes. He tells me the manual does not explain the issue. He's right! He does not have a second receiver. I do, and can work around the issue this way. I can also work around the issue by using XIT, but it is cumbersome. Is this a firmware bug or is this normal? What's the secret to setting split in PSK31? Thanks for the input! -lu-w4lt- K3 # 3192 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1325 / Virus Database: 1500/3624 - Release Date: 05/08/11 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 - stacking possibilites
Just for operational convenience I'd consider stacking them the other way, with the K3 VFO A knob at a convenient height for tuning and the amplifier above the K3. I've found some very handy open-shelving bamboo "shoe racks" at CostCo that are doing the job for me. My amplifier is about 2 inches above the K3. The rack is wide enough for a K3, P3, and another box such as a rotator controller or a US Interface Navigator. The 2nd shelf hosts a second K3 and a KPA500. The top shelf has two speakers and various junk that I gather. I've found these racks so useful that I have 5 or 6 of them. I can hold QSL boxes on them and some plastic shoe boxes that hold various projects. I have a lot of little projects and boxes. Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ai6ii Sent: Tuesday, May 10, 2011 6:59 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] KPA500 - stacking possibilites Now that I have received confirmation of the delivery, I need finalize where I am going to place my new KPA500. Given a very limited desk size (ony 34 inches wide), I wonder if the K3 can be stacked on top of the KPA500. I undertand from earlier posts that there needs to be a minimum half inch clearance on top of the KPA500 for the air intake grill. Has any FTer stacked the two boxes to see if they work without generating too much heat? ..mike AI6II __ 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] KPA500 - stacking possibilites
Now that I have received confirmation of the delivery, I need finalize where I am going to place my new KPA500. Given a very limited desk size (ony 34 inches wide), I wonder if the K3 can be stacked on top of the KPA500. I undertand from earlier posts that there needs to be a minimum half inch clearance on top of the KPA500 for the air intake grill. Has any FTer stacked the two boxes to see if they work without generating too much heat? ..mike AI6II __ 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] Plasma TV Noise any ideas on how to filter it out.
Same thing here but the neighbor is no help other than allowing me to buy them a new TV. Theirs is a Samsung 58" plasma. Forget using any kind of line filters. The noise is radiated from the SCREENstraight out. After months of experimentation, the only cure has been the MFJ-1026 and it works magic! Having a K3 with LP-PAN or P3 makes adjustments easy. Otherwise it would be a real pain to tweak. You do need decent noise receiving antenna for the 1026. The K3 has the RX-IN/OUT jacks which allows to interface the 1026 with ease and retain your QSK without using the MFJ internal relay. Contact me for any further info. 73 Steve N4LQ - Original Message - From: "Al Lorona" To: Sent: Tuesday, May 10, 2011 9:19 PM Subject: Re: [Elecraft] Plasma TV Noise any ideas on how to filter it out. My next-door neighbor was probably one of the early adopters of plasma TV several years ago. One night at bedtime I switched on the AM radio and was met by severe buzz all over the dial. Not a single station was listenable. I could hear the buzz all the way up to 10 meters. It only took me a few minutes to determine that it was coming from my neighbor's house. I informed him the next day. Lucky for me, he is the type of guy who can't stand the idea that a brand-new device of his is causing pollution-- he saw it as a defect. And, of course, his own AM radios were affected, too. He had a Panasonic tech out there in a couple of days. I don't know what the tech did, but he managed to reduce the noise by about 10 dB though he never eliminated it entirely. I've had to live with it ever since. Since then I have said that the two things that have the most potential to kill HF ham radio are homeowners' associations and plasma TVs. Pray that your neighbors don't buy one of these evil devices. 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 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] Plasma TV Noise any ideas on how to filter it out.
My next-door neighbor was probably one of the early adopters of plasma TV several years ago. One night at bedtime I switched on the AM radio and was met by severe buzz all over the dial. Not a single station was listenable. I could hear the buzz all the way up to 10 meters. It only took me a few minutes to determine that it was coming from my neighbor's house. I informed him the next day. Lucky for me, he is the type of guy who can't stand the idea that a brand-new device of his is causing pollution-- he saw it as a defect. And, of course, his own AM radios were affected, too. He had a Panasonic tech out there in a couple of days. I don't know what the tech did, but he managed to reduce the noise by about 10 dB though he never eliminated it entirely. I've had to live with it ever since. Since then I have said that the two things that have the most potential to kill HF ham radio are homeowners' associations and plasma TVs. Pray that your neighbors don't buy one of these evil devices. 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
Re: [Elecraft] K3 - How much supply voltage is too much?
Didn't someone here not too long ago post some information on the unreliable voltage regulation of many wallwart/laptop supplies? Maybe it wasn't this reflector. In general, though, I believe the thread mentioned that many of those supplies assume a load, and under no load conditions the voltage often went up several volts. The K3 has it's own internal voltage regulators, but I'm not sure I'd want to subject them to that sort of over voltage at turn on. Dave AB7E > On 5/10/2011 15:32, Brian Alsop wrote: >> Roger, >> >> You should see the crummy "DC" waveforms put out by typical laptop >> switching supplies. I bought a bunch at a recent hamfest. Put each one >> on a 'scope to observe the output. One had a 0.5 volt sawtooth >> superimposed over the DC value. Another have ringing with introducing a >> swing of over a volt in magnitude around the DC value. I tested at zero >> and full load. None of these problems went away. The rest were far >> from clean. Some were IBM branded. >> >> No way would I put my rig on one of these beasties. >> >> I don't know how laptops manage to tolerate them. >> >> The only other thing is yes were hamfest items and could have all been >> rejects or something. >> >> For what it is worth, I did find one good supply but it was for a Kodak >> printer. However, it put out 25 volts. The output was very clean at >> all levels of load. >> >> 73 de Brian/K3KO __ 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] Fw: kio2 5v reg substitution
that’s an L7805CV -Original Message- From: John Cooper Sent: Tuesday, May 10, 2011 7:43 PM To: elecraft ; d...@w3fpr.com Subject: [Elecraft] kio2 5v reg substitution Can I substitute the 78l05 (u2) 5v regulator on the kio2 with a l7805cv? __ 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] kio2 5v reg substitution
Can I substitute the 78l05 (u2) 5v regulator on the kio2 with a l7805cv? __ 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] Interface KRC2 with MK2R
> I used my two KRC2s for several years with my 756Pro3s and the CI-V > decoding worked just fine. I must have missed the CI-V decoding. If that's the case, MK2R+ can (re)generate CI-V data on the ACC port (again one for each radio) which can be fed to the KRC-2. The KRC-2 and MK2R can not be connected in parallel to the transceiver. 73, ... Joe Subich, W4TV microHAM America, LLC. http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM e-mail: supp...@microham.com On 5/10/2011 8:31 PM, Ed Muns wrote: > I used my two KRC2s for several years with my 756Pro3s and the CI-V decoding > worked just fine. > > 73, > Ed - W0YK > - > Ed Muns > www.w0yk.com > > > >> -Original Message- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe >> Subich, W4TV >> Sent: Tuesday, May 10, 2011 5:17 PM >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] Interface KRC2 with MK2R >> >> >> The answer is yes. Since the KRC-2 does not decode Icom CI-V >> data, configure MK2R to output HEX/BCD "Band Data" on the ACC >> ports (one for each transceiver) and connect that BCD data to >> the "Yaesu" inputs of the KRC-2 (again, one for each rig). >> >> You have two choices for the source of HEX/BCD data ... >> option 1 is to have MK2R/Router generate the HEX/BCD code >> based on the frequency returned by the transceiver (CAT >> decode) while option 2 is to allow the logging program (N1MM >> Logger or Win-Test) to set the appropriate output using the >> microHAM Control Protocol. >> >> This capability is not limited to the KRC-2 ... any decoder >> capable of HEX to 1 of 16 or BCD to 1 of 10 decoding (e.g., >> TopTen BD-Y or W9XT BCD-10, etc.) will work the same way. >> >> 73, >> >> ... Joe Subich, W4TV >> microHAM America, LLC. >> http://www.microHAM-USA.com >> http://groups.yahoo.com/group/microHAM >> >> e-mail: supp...@microham.com >> >> >> On 5/10/2011 6:14 PM, Robert Bajuk wrote: >>> Hi, >>> >>> Is there a way to connect KRC2 to the MK2R outputs in order >> to switch >>> BPF / Antennas with Icom radios? >>> >>> Regards, >>> >>> Robert >>> __ >>> 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] Interface KRC2 with MK2R
The answer is yes. Since the KRC-2 does not decode Icom CI-V data, configure MK2R to output HEX/BCD "Band Data" on the ACC ports (one for each transceiver) and connect that BCD data to the "Yaesu" inputs of the KRC-2 (again, one for each rig). You have two choices for the source of HEX/BCD data ... option 1 is to have MK2R/Router generate the HEX/BCD code based on the frequency returned by the transceiver (CAT decode) while option 2 is to allow the logging program (N1MM Logger or Win-Test) to set the appropriate output using the microHAM Control Protocol. This capability is not limited to the KRC-2 ... any decoder capable of HEX to 1 of 16 or BCD to 1 of 10 decoding (e.g., TopTen BD-Y or W9XT BCD-10, etc.) will work the same way. 73, ... Joe Subich, W4TV microHAM America, LLC. http://www.microHAM-USA.com http://groups.yahoo.com/group/microHAM e-mail: supp...@microham.com On 5/10/2011 6:14 PM, Robert Bajuk wrote: > Hi, > > Is there a way to connect KRC2 to the MK2R outputs in order to switch BPF / > Antennas with Icom radios? > > Regards, > > Robert > __ > 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] XV432 Oscillates with Amp connected
Thanks guys! It's quite weird. When I say key up, I mean activate the XV432 PTT with the rig (exciter) in CW mode without pressing the CW key. That is, no RF goes into the transverter. Just the simple fact of keying the transverter while it is connected to something other than a 50 Ohm load seems to set up an oscillation. Several people have suggested a pad. The output of the XV432 is a low pass pi circuit. Since I don't want to reduce the RX gain, it would seem this either needs to be in the amp's TX chain or the XV432's TX chain. (i.e. before the TR relay) After I wrote my first message, I installed an SWR meter between the XV432 and amp so I could adjust the Henry for the best SWR. Unfortunately, this didn't cure the problem. The XV432 still oscillated. I have another amp I can try. I also have a TS2000 to try to help set the amp up. Thanks again for the ideas. Stu2 __ 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 - How much supply voltage is too much?
Brian, Laptops "get away with it" because they use their internal battery like a capacitor. And, they're not really too susceptible to noise in general. Nature of the beast... Regards, kurtt Kurt Pawlikowski, AKA WB9FMC The Pinrod Corporation ku...@pinrod.com (773) 284-9500 http://pinrod.com On 5/10/2011 15:32, Brian Alsop wrote: > Roger, > > You should see the crummy "DC" waveforms put out by typical laptop > switching supplies. I bought a bunch at a recent hamfest. Put each one > on a 'scope to observe the output. One had a 0.5 volt sawtooth > superimposed over the DC value. Another have ringing with introducing a > swing of over a volt in magnitude around the DC value. I tested at zero > and full load. None of these problems went away. The rest were far > from clean. Some were IBM branded. > > No way would I put my rig on one of these beasties. > > I don't know how laptops manage to tolerate them. > > The only other thing is yes were hamfest items and could have all been > rejects or something. > > For what it is worth, I did find one good supply but it was for a Kodak > printer. However, it put out 25 volts. The output was very clean at > all levels of load. > > 73 de Brian/K3KO > > On 5/10/2011 19:35, Ross Primrose N4RP wrote: >> On 5/10/2011 3:13 PM, Jim Brown wrote: >>> If it were my radio, I would add one or two silicon diodes in series >>> with the positive lead to reduce the voltage to about 14 volts. For a >>> 10W K3, I'd guess that 5A diodes would be just fine. >> I'd thought about that as a possibility. Heat could be an issue, >> especially if I want it to be easily portable, at 5A, that's about >> 3.5W/diode assuming a 0.7V drop. >> >>> If it's a laptop supply, I would also be concerned about RF noise that >>> it might produce. >> I'm concerned about it too, but the laptop supply is already in hand, >> and without a laptop, so it's worth a try. I know the old desktop PC >> supply I'm using now has broadband noise at 7.070-7.080, so maybe this >> one will be better (and definitely a lot smaller!). >> >> 73, Ross N4RP >> > > > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1325 / Virus Database: 1500/3628 - Release Date: 05/10/11 > > __ > 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] Interface KRC2 with MK2R
The KRC2 supports the band decode outputs of Elecraft, Icom, Yaesu, and Kenwood -- so the answer should be Yes. But you mention both MK2R and Icom - you cannot use both at one time. 73, Don W3FPR On 5/10/2011 6:14 PM, Robert Bajuk wrote: > Hi, > > Is there a way to connect KRC2 to the MK2R outputs in order to switch BPF / > Antennas with Icom radios? > > Regards, > > Robert > __ > 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] Interface KRC2 with MK2R
Hi, Is there a way to connect KRC2 to the MK2R outputs in order to switch BPF / Antennas with Icom radios? Regards, Robert __ 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 ESD safety
Hello, I am removing the antenna tuner from my K3 and would like information on how to protect the module from ESD after removing it from the transceiver. I use the wrist strap and mat, so I am talking about storage and shipment. Should I wrap it in aluminum foil before putting it in a baggie? Obviously, I didn't save the original protective bag. Any ideas? 73 and Thanks, Rick Dettinger K7MW __ 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] Dayton Booth Help
It is Dayton time again! Anyone going to the Dayton Hamvention who would like to help out at the Elecraft booth, just let us know! Please email me directly- l...@elecraft.com. Indicate what day or days you are available and also the time you would prefer (morning- afternoon- after 1pm- before 3pm- whatever you prefer or are available). Be sure to check forum times so you don't sign up and miss your must see forum. We can use help with Q&A at the booth and even some behind the table help in sales- so let us know what you are up for contributing. Look forward to hearing from you! Lisa -- Lisa Jones Elecraft, Inc. (831) 763-4211 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] FS:K1
FS: Wilhelm-built (Mar. 2010) Elecraft K1, s/n 2865, in as-new condition, with KFL1-4 (40, 30, 20 & 15M) & KFL1-2 (80 & 17M) filter boards, KNB1 Noise Blanker, K1BLKLTKIT-X Backlight. Also comes with KAT1 ATU, and KBT1 Battery Adapter. The ATU kit has been assembled, by me, but has not been installed, or tested, in the K1. The KBT1 kit has been opened, but has not been installed. All documentation included. The K1 has an 80 kHz tuning range. Also includes a Palm Mini Paddle, with extra mount and carrying case, unpacked, but never used. Reason for selling: I bought a Wilhelm-built K2. Asking $650, including shipping via USPS Priority Mail and insurance, CONUS only. I will be happy to demonstrate the K1 on 40, 30 or 20 meters, band conditions permitting. Please email queries to: corribkid at aol dot com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - How much supply voltage is too much?
Probably been addressed, but the switching supplies all have a feedback loop to set the output voltage. I would look for it and determine the voltage divider and reduce the value on the output/top side by 10% using a parallel resistor. This makes the switcher think it is producing too much voltage and will lower it accordingly. Measure the voltage without a load. It should reduce your voltage by about 1.5 VDC. Making it 13.5.. Give it a try before just adding diodes. It has worked for me on two surplus supplies. Good luck. Mel, K6KBE From: Jim Brown To: elecraft@mailman.qth.net Sent: Tue, May 10, 2011 12:13:33 PM Subject: Re: [Elecraft] K3 - How much supply voltage is too much? On 5/10/2011 10:54 AM, Ross Primrose N4RP wrote: > I have a surplus laptop switching supply that's 15V @ 5A. Is that too > high a voltage to run my 10W K3 on routinely? If it were my radio, I would add one or two silicon diodes in series with the positive lead to reduce the voltage to about 14 volts. For a 10W K3, I'd guess that 5A diodes would be just fine. If it's a laptop supply, I would also be concerned about RF noise that it might produce. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - How much supply voltage is too much?
If I had paid 1,500USD or 1,700USD for A K3 10W rig I don't think I'd risk putting anything but a real power supply on it. Wall warts are not (in my opinion) real power supplies. Look at this: http://www.mfjenterprises.com/Product.php?productid=MFJ-4125 And it's reviews: http://www.mfjenterprises.com/Reviews.php?productid=MFJ-4125 http://www.eham.net/reviews/detail/1895 And if you get a KPA3 later you won't have to get another one... 73, Tom Amateur Radio Operator N5GE On Tue, 10 May 2011 12:13:33 -0700, Jim Brown wrote: >On 5/10/2011 10:54 AM, Ross Primrose N4RP wrote: >> I have a surplus laptop switching supply that's 15V @ 5A. Is that too >> high a voltage to run my 10W K3 on routinely? > >If it were my radio, I would add one or two silicon diodes in series >with the positive lead to reduce the voltage to about 14 volts. For a >10W K3, I'd guess that 5A diodes would be just fine. > >If it's a laptop supply, I would also be concerned about RF noise that >it might produce. > >73, Jim K9YC >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - How much supply voltage is too much?
Roger, You should see the crummy "DC" waveforms put out by typical laptop switching supplies. I bought a bunch at a recent hamfest. Put each one on a 'scope to observe the output. One had a 0.5 volt sawtooth superimposed over the DC value. Another have ringing with introducing a swing of over a volt in magnitude around the DC value. I tested at zero and full load. None of these problems went away. The rest were far from clean. Some were IBM branded. No way would I put my rig on one of these beasties. I don't know how laptops manage to tolerate them. The only other thing is yes were hamfest items and could have all been rejects or something. For what it is worth, I did find one good supply but it was for a Kodak printer. However, it put out 25 volts. The output was very clean at all levels of load. 73 de Brian/K3KO On 5/10/2011 19:35, Ross Primrose N4RP wrote: > On 5/10/2011 3:13 PM, Jim Brown wrote: >> If it were my radio, I would add one or two silicon diodes in series >> with the positive lead to reduce the voltage to about 14 volts. For a >> 10W K3, I'd guess that 5A diodes would be just fine. > > I'd thought about that as a possibility. Heat could be an issue, > especially if I want it to be easily portable, at 5A, that's about > 3.5W/diode assuming a 0.7V drop. > >> If it's a laptop supply, I would also be concerned about RF noise that >> it might produce. > > I'm concerned about it too, but the laptop supply is already in hand, > and without a laptop, so it's worth a try. I know the old desktop PC > supply I'm using now has broadband noise at 7.070-7.080, so maybe this > one will be better (and definitely a lot smaller!). > > 73, Ross N4RP > - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1325 / Virus Database: 1500/3628 - Release Date: 05/10/11 __ 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 - How much supply voltage is too much?
On 5/10/2011 3:13 PM, Jim Brown wrote: > If it were my radio, I would add one or two silicon diodes in series > with the positive lead to reduce the voltage to about 14 volts. For a > 10W K3, I'd guess that 5A diodes would be just fine. I'd thought about that as a possibility. Heat could be an issue, especially if I want it to be easily portable, at 5A, that's about 3.5W/diode assuming a 0.7V drop. > If it's a laptop supply, I would also be concerned about RF noise that > it might produce. I'm concerned about it too, but the laptop supply is already in hand, and without a laptop, so it's worth a try. I know the old desktop PC supply I'm using now has broadband noise at 7.070-7.080, so maybe this one will be better (and definitely a lot smaller!). 73, Ross N4RP -- FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” __ 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 - How much supply voltage is too much?
On 5/10/2011 10:54 AM, Ross Primrose N4RP wrote: > I have a surplus laptop switching supply that's 15V @ 5A. Is that too > high a voltage to run my 10W K3 on routinely? If it were my radio, I would add one or two silicon diodes in series with the positive lead to reduce the voltage to about 14 volts. For a 10W K3, I'd guess that 5A diodes would be just fine. If it's a laptop supply, I would also be concerned about RF noise that it might produce. 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] K3 - How much supply voltage is too much?
>From Page 8 of the K# owners manual, Revision D9, Dec. 7, 2010: "Supply Voltage and Current 13.8 V nominal (11 V min, 15 V max). 17-22 A typical in TX for K3/100, 3-4 A typical in TX for K3/10. 0.9A typical RX (less sub receiver). When using reduced supply voltage (< 12 V), power output should be reduced (e.g. 70 W at 11 V)." 73, Tom Amateur Radio Operator N5GE On Tue, 10 May 2011 13:54:01 -0400, Ross Primrose N4RP wrote: >I have a surplus laptop switching supply that's 15V @ 5A. Is that too >high a voltage to run my 10W K3 on routinely? > >Thanks, and 73, Ross N4RP __ 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 - How much supply voltage is too much?
I have a surplus laptop switching supply that's 15V @ 5A. Is that too high a voltage to run my 10W K3 on routinely? Thanks, and 73, Ross N4RP -- FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.” __ 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 Receive Question
On 5/10/2011 9:28 AM, Larry Boekeloo wrote: > Am I the only one with this? Was the preamp switched on? Did you have the attenuator engaged? For the higher bands, you generally need the Attenuator OFF and the Ppreamp ON to hear weaker signals. As I recall, the MP defaults to that setting. And, of course, you will want to narrow up the IF to something like 2kHz. 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] K3 Receive Question
Same antenna used on both rigs? matt W6NIA On Tue, 10 May 2011 09:28:55 -0700 (PDT), you wrote: >Hi to all... > >The other evening, VK0KEV was on 15 phone, 21.314 to be exact, at about 9 pm >local time in Michigan. I tuned the K3 to his frequency and could tell he was >there but not good enough to copy if he came back to my call. I switched to >my FT-1000MP Mark V and not only could I tell he was there but he I could have >copied my call if in fact he would have come back to me. I switched back and >forth between the two rigs for quite some time and the K3 was always marginal >copy. I've noticed this on 10 meters before too. Am I the only one with this? > >Thanks > >Larry, KN8N >__ >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 Receive Question
Hi to all... The other evening, VK0KEV was on 15 phone, 21.314 to be exact, at about 9 pm local time in Michigan. I tuned the K3 to his frequency and could tell he was there but not good enough to copy if he came back to my call. I switched to my FT-1000MP Mark V and not only could I tell he was there but he I could have copied my call if in fact he would have come back to me. I switched back and forth between the two rigs for quite some time and the K3 was always marginal copy. I've noticed this on 10 meters before too. Am I the only one with this? Thanks Larry, KN8N __ 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] XV432 Oscillates with Amp connected
All the suggestions about trying different cable lengths are good thoughts to help find the "sweet spot" of compatibility between the XV432 output circuit impedance and the Henry input impedance. Folks on the repeater-builder group talk about this very issue often; Of course in their case they are concerned about the transmitter feeding a reactive duplexer assembly. Oscillations don't seem to be the issue presented, rather, the tendency of the transmitter output stage to produce "other" by-products when forced to feed a reactive load, such as a narrow band-pass duplexer, causes unhappiness in the transmitter. Spurious signals are the result. The oft touted "simple" cure proposed is "try different lengths of cable between TX and Combiner." The more professional solution is to place an Isolator between the TX and the Amp during transmit. One example is shown here... http://www.rflambda.com/pdf/isolator/RFLI101M40M50.pdf This way, the TX only ever sees a nice infinite coax assuming, of course, the third port is properly terminated into 50 ohms. Of course you need to receive as well and the isolator won't help with that by itself. So all I have done here is to propose a workable, but unwieldy and expensive solution if, in fact, the cause of the oscillations is impedance issues between the XV432 output stage and the Henry input stage. The point is impedance issues between a Source and Load can cause the source to not play nice. Let's hope your problem is just a feedback path solved with chokes. John > Good day, > > I'm working with the XV432, Flex 1500 and Henry 2004A Amp. The rig, xvrtr and amp PTTs are sequenced. Hoping somebody might have been down this path before and has a solution. > > If I connect the transverter output to the amp (or different pieces of open coax) and key the transverter, the power meter goes full scale and I see an oscillation on the spectrum analyzer. The frequency of the oscillation varies with the load. (i.e. amp connected or different lengths of coax) If I connect the XV432 to a 50 ohm load, no > oscillations and all works well. > > I ran through the alignment procedure again with the XV432 connected to a 50 Ohm load. All the voltages look right and the tuning is smooth. (e.g. 20mV Quiescent Current Adjustment, TP3/TP4) It's obvious the XV432 is happy into 50 Ohms, but not into impedances that wander from 50 Ohms. > > BTW, I have added all the mods as per the Elecraft website. > > Any ideas? > > 73's > Stu2 > W7IY > __ > 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] P3 Strange Display Behavior on BSET
Thanks for the confirmation, Alan. I was aware that the behavior was only present in fixed-tune mode, but forgot to mention that fact in my posting. The fix will greatly improve SO2V operating with the P3. - 73, Stan - KR7C -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Strange-Display-Behavior-on-BSET-tp6346122p6347973.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 and HRD turning AGC off
Has anybody experienced this with LP-Bridge inserted between the K3 and HRD? That should slow down the polling of the K3 as LP-Bridge will do the polling at its own pace and respond to HRD with data from its own database. I have never experienced any problems with AGC turning off but I am also using HRD v 4. AB2TC - Knut Stephen Prior wrote: > > I have just downloaded DXLab. I don't think I shall be bothering with HRD > anymore! In answer to Guy's question, I seem to recall that a serial port > emulator I have used in the past had a buffer for HRD, but I'm a bit hazy > on the detail. > > Thanks gents, for all the input. I'm going to take a good look at DXLab > and look again at MacLogger and Rumlog for the mac. > > 73, Stephen > > -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-HRD-turning-AGC-off-tp6340160p6347915.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
