[Elecraft] K3 Power puzzlement
The meter (Watt's Up) is in the 13.8v line in series with the K3. This must be a joke, right? April 1 isn't for another ten weeks! :-) Mike / KK5F __ 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] Two mic cables into K2
Brian, I don't know of a commercial product, but I have built such a switch (actually the entire interface) into one of the A-B switch boxes. See my website www.w3fpr.com. 73, Don W3FPR On 1/18/2011 1:44 AM, Brian - N5BCN wrote: After growing tired of plugging/unplugging my SignaLink cable and hand mic when switching from digital modes to SSB, I'm trying to find a more elegant solution. I'd like a commercial product, however, the MFJ mic switches seem to get so-so reviews and the NCS Multi-Switch seems way overkill for this. Perhaps a home-brewed Y-Cable might work? Just curious what other have come up with to plug two mics into the K2. 73 N5BCN - Brian - K2 #6800 KSB2 KAT2 KIO2 K160RX KNB2 __ 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 Power puzzlement
Good Morning Ralph . I certainly owe you an apology - I was familiar with this meter: http://cableorganizer.com/electricity-power-meter/ and not familiar with the DC version with the same name that you are using. I'm very sorry for jumping to an incorrect conclusion without looking into it further. Indeed, the meter you are using should be able to provide a reasonable measurement of the DC current. My bad! But with your measured current, you should be dissipating about 20 watts somewhere in the K3 with it off. Unless something is getting quite warm I would still be looking for some kind of measurement anomaly. Again, I'm sorry for my error. 73 Craig AC0DS Tnx, Craig, but I actually know what I'm doing! I've been building ham gear since 1954. Here's the Watt's Up: http://www.powerwerx.com/tools-meters/watts-up-meter-dc-inline.html#desc What did you think it was? __ 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 Power puzzlement
I'm assuming he has one of these inline: http://www.powerwerx.com/tools-meters/watts-up-meter-dc-inline.html ...not the similarly named product for AC use made by a different company. 73 -- Joe KB8AP On Jan 17, 2011, at 9:21 PM, Craig D. Smith wrote: I believe the meter you are trying to use is intended for AC powerline measurements. No telling what it will do with DC. I expect that if you repeat the measurement using a DVM in a DC current mode you will get a more meaningful result. 73 Craig AC0DS Assuming you've checked the obvious (...nothing else connected to the p/s) Yep. The meter (Watt's Up) is in the 13.8v line in series with the K3. __ 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: K2/10 SN 5251 including panadapter downconverter
For sale: K2/10 SN 5251 with Audio Filter, Noise Blanker, Internal Automatic Antenna Tuner, SSB Adapter and Clifton Labs IF Buffer Amp. Includes a nicely packaged Softrock-based receiver to drive a PC-based Panadaptor display, a virtually new Heil HM-IC microphone, and an Astron RS-12 power supply. All in excellent condition except the power supply, which has some minor scratches on the case. $850 plus shipping. Pictures and details available on request. Bill, K5EMI. Email: wk...@verizon.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Power puzzlement
I have the Model 101 Super Whatt Meter so I hooked mine up to see what it reads. I'm showing 0.0A with the switch off and 1.6A with the switch on and the P3 on. Mine is an older model and measures the current on the negative side. If yours is the same I wonder if the current you're seeing could be ground related. 73, Alan N5NA Ralph Parker wrote: I thought I'd check to see how much current my K3/100 draws under various operating condx (for battery powered QRP portable operation, etc.). What the heck is drawing 1.7 amps when the front panel power switch is off? VE7XF __ 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 -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Power-puzzlement-tp5933999p5936509.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 low audio problem
Recently I had a microphone problem with my K2 which resulted from a dry joint on the SSB board. I cured the problem but in the process of reassembly the rigs audio took a dive. The only two units that I had removed were the SSB unit and the 100 Watt PA. The rig is receiving ok because I can see the S meter. However receiver audio is very low and this includes the sidetone level which I have set at 60. I have plugged in the original speaker directly (omitting the 100W PA). However the audio is still low. This is a mystery to me because everything was fine until I repaired the microphone problem and reassembled the K2. Anybody got any ideas? Thanks in advance de Tony EI5EM __ 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 TX spurs?
I think I recall a thread about spurs being produced by a K3's TX, but didn't pay enough attention at the time. I've since become aware of a K3 that appeared to have two spurs showing up on my P3. They were about 30db down from his very strong carrier on 7031 KHZ, and equally spaced about 1 KHZ on either side. They both could be tuned in and copied as individual signals. I was surprised when I asked the fella what his rig was and he told me it is a K3. (;-) I have -not- seen these spurs appear on other strong signals since this event, and follow-up tests with him have not shown the spurs ... but ... I've not seen his signal as strong as it was at the time. There's no doubt they were real, but what might be the cause? Is / was the problem with his K3, my K3 or my P3. Thoughts? 73! Ken Kopp - K0PP elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Power puzzlement
It certainly would be simple enough to get some resistors, measure them and the voltage. Put the voltage across various combinations and see how calculated current using ohms law compares to the meter reading. You could probably use a 50 ohm dummy load. That would be around 250 to 300 ma. Only about 3 to 5 watts. You will at least get an idea it the unit measures under 1 amp reasonably well. Or even simpler, find someone with a Simpson model 260 VOM. It measures DC up to 10 amps. David K0LUM At 9:54 AM -0800 1/18/11, N5NA wrote: I have the Model 101 Super Whatt Meter so I hooked mine up to see what it reads. I'm showing 0.0A with the switch off and 1.6A with the switch on and the P3 on. Mine is an older model and measures the current on the negative side. If yours is the same I wonder if the current you're seeing could be ground related. 73, Alan N5NA Ralph Parker wrote: I thought I'd check to see how much current my K3/100 draws under various operating condx (for battery powered QRP portable operation, etc.). What the heck is drawing 1.7 amps when the front panel power switch is off? VE7XF __ 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 -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Power-puzzlement-tp5933999p5936509.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 TX spurs?
During the recent NAQP, I heard these 1 kHz sidebands on a nearby station's signal on 160. (Perhaps the same station Ken heard?) It turns out, his K3 was overloading his wimpy power supply, and making it go into current limit. There was no sign of the spurs at slightly lower power. He could see fluctuations in the supply voltage on the K3 internal meter whenever the spurs appeared. With an adequate power supply, of course, the K3 is very, very clean. By the way, while we were checking that out we did a quick comparison of key clicks from my K3 and FT-1000D (with the W8JI mods). The K3 was much better. And I know the FT-1000D was much worse before the mods. It is best to have neighbors with K3's. (But with good power supplies.) 73, Scott K9MA On Jan 18, 2011, at 12:40 PM, Rose wrote: I think I recall a thread about spurs being produced by a K3's TX, but didn't pay enough attention at the time. I've since become aware of a K3 that appeared to have two spurs showing up on my P3. They were about 30db down from his very strong carrier on 7031 KHZ, and equally spaced about 1 KHZ on either side. They both could be tuned in and copied as individual signals. I was surprised when I asked the fella what his rig was and he told me it is a K3. (;-) I have -not- seen these spurs appear on other strong signals since this event, and follow-up tests with him have not shown the spurs ... but ... I've not seen his signal as strong as it was at the time. There's no doubt they were real, but what might be the cause? Is / was the problem with his K3, my K3 or my P3. Thoughts? 73! Ken Kopp - K0PP elecraftcov...@gmail.com __ Scott Ellington Madison, Wisconsin USA __ 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 TX spurs?
One possibility: “microphonics” modulating the synthesizer. The source is typically the sidetone being played through the internal speaker. A quick fix is to not use the internal speaker. The solid fix is the Elecraft synthesizer stiffener mod kit. Easy to determine if this is the problem: change PITCH and see if the offset of the spurs changes. I’ve seen this on a friend’s unit. The spurs were present, but diminished, with an external speaker. The mod kit stamped them out. Bill, K1GQ On 2011.01.18, at 13:40, Rose wrote: I think I recall a thread about spurs being produced by a K3's TX, but didn't pay enough attention at the time. I've since become aware of a K3 that appeared to have two spurs showing up on my P3. They were about 30db down from his very strong carrier on 7031 KHZ, and equally spaced about 1 KHZ on either side. They both could be tuned in and copied as individual signals. I was surprised when I asked the fella what his rig was and he told me it is a K3. (;-) I have -not- seen these spurs appear on other strong signals since this event, and follow-up tests with him have not shown the spurs ... but ... I've not seen his signal as strong as it was at the time. There's no doubt they were real, but what might be the cause? Is / was the problem with his K3, my K3 or my P3. Thoughts? 73! Ken Kopp - K0PP elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 low audio problem
Tony, Did you plug the KSB2 in correctly? Check it again. If that does not fix it, remove the KSB2 board and stick some jumper wires between pin 1 and 3 of both J9 and J10. Does the audio come back to normal? If so, there is a problem on the KSB2 board. If that does not fix it, check to see if you have the RX ANT turned on in the menu. If you have an XG1 or XG2, try that and see if you get anywhere near an S-9 indication on the S-meter. You may be in for some signal tracing it those quick checks do not reveal the problem. 73, Don W3FPR On 1/18/2011 1:30 PM, Tony Breathnach wrote: Recently I had a microphone problem with my K2 which resulted from a dry joint on the SSB board. I cured the problem but in the process of reassembly the rigs audio took a dive. The only two units that I had removed were the SSB unit and the 100 Watt PA. The rig is receiving ok because I can see the S meter. However receiver audio is very low and this includes the sidetone level which I have set at 60. I have plugged in the original speaker directly (omitting the 100W PA). However the audio is still low. This is a mystery to me because everything was fine until I repaired the microphone problem and reassembled the K2. Anybody got any ideas? Thanks in advance de Tony EI5EM __ 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: K3/K144XV/P3 Signal Strength Readings
No comments from Elecraft or elsewhere on my posting below, so perhaps my conclusions are wrong or maybe I'm just expecting results too quickly. Any views anyone? By the way, as with most postings that raise specific issues, it's not intended to convey general negative vibrations about the K3/K144XV/P3. I would not part with mine :-) 73 to all Geoff G3UCK - Original Message - From: Geoffrey Downs geoffre...@madasafish.com To: Elecraft@mailman.qth.net Sent: Monday, January 17, 2011 8:11 PM Subject: [Elecraft] K3/K144XV/P3 Signal Strength Readings Having calibrated the K3 S meter and the P3 display with my XG2, I have 50 microvolts equal to S9 and -73dbm (whether or not the preamp is on). However, on 2m (K144XV) there is a discrepancy between the K3 S meter and the P3. I believe Alan has told us on the reflector that on 2m S9 on the P3 is -93dbm in accordance with the IARU standard, but I also believe that when using the K144XV the K3 S meter still regards S9 as -73dbm which is different by a factor of 10. Consequently K3 S meter readings are lower on 2m than they should be. Today, for example, I had a 2m qso where the two stations I was working were about S7 on the P3 but S3/4 on the K3 S meter. Is anything going on in the Elecraft f/w academy to address this? 73 to all Geoff G3UCK __ 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] K2, KPA100, N-GEN, W1 Construction Blog
Builders may find some of the text and a lot of the pictures posted at http://build-k2.blogspot.com http://build-k2.blogspot.com to be helpful. I tracked my kit-building activity from late July, 2010, through today. As of today, my K2/100 is up and running ... a very satisfying feeling! 73 - Bruce K1FFX - Bruce Rosen K1FFX -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-K2-KPA100-N-GEN-W1-Construction-Blog-tp5937734p5937734.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Front panel BIAS
Hi, I just rec'd my second CM500 from Amazon. I was about to make a connector for the front panel and thought I'd try the Heil adapter just to see if it would work. I plugged in the adapter, and the CM500 and put the K3 in test mode. Switched the meter to read ALC/cmp. I then set the mic input to FPL BIAS and nothing. No audio. I inserted the little bias supply from YAMAHA and the mic worked as expected. My plan was to connect the tip of the mic plug to the mic input (pin 1), and the shield to the mic grnd (pin 7). Do I need to connect the 'ring' to some other pin? For my Kenwood, I connected it with a 3.3K resistor to the +8V. I assumed the BIAS setting on the K3 would take care of this and put it on the mic input. Am I missing something? I Have K3 serial no 4536 and was unaware of any issues with the front panel mic input. I have so far run my Heil HM-10 Dual on the front panel and the CM500 on the rear. But I'm getting ready for the spring/summer portable season and want both CM500's on the rig. Any ideas? ...bc nr4c __ 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] Ooof...
Built and installed the KNB2. Assembly went great and looked good. Test after install yielded 'NOT INST'. U3 is in correctly, U1 is in correctly, the two diodes are in the correct orientation and all pins are soldered. To make matters worse, the receiver doesn't work now - lvery ow volume (with the NB out). I will keep looking but am open to any ideas. Thanks Brian KB1VBF http://home.comcast.net/~b.denley/index.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] Ooof.. Update
I am beginning to think I may have wacked or damaged the PIN diode for the T/R switch while adding the resistor for the KNB2. That might explain no receive or transmit that I am getting now. Does that make sense? Brian KB1VBF http://home.comcast.net/~b.denley/index.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] [K2] Ooof.. Update
Brian, Actually, that does not make a lot of sense. The T/R switch is too far removed from the KNB2 for that to be a problem (unless you were really wild with the soldering iron :-) ). Try jumpering (with a piece of bent wire) between pins 1 and 6 of the J12 header. If receive comes back to life, you have a problem on the KNB2 board. Let us know the results. 73, Don W3FPR On 1/18/2011 10:26 PM, Brian Denley wrote: I am beginning to think I may have wacked or damaged the PIN diode for the T/R switch while adding the resistor for the KNB2. That might explain no receive or transmit that I am getting now. Does that make sense? Brian KB1VBF http://home.comcast.net/~b.denley/index.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 OT -Heil Mic/base for sale
I have a nice HM-10 dual element mic with the CB-1 base/PPT switch for sale. Include Kenwood/Elecraft cable. Great for both rag chewing and DX. Contact me off the list. Thanks 73s Randy K6CRC K3#2051 k6...@arrl.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] Ooof.. Update
Don was right! I had taken the SSB adaptor out and that (without jumpers) rendered the K2 non-functional. Putting the KSB2 back in and adding the pin1 to pin 6 jumper at J12 (as Don suggested) brought my K2 back to life! Now I still have to figure out what is wrong with my KNB2... Thanks again Don! Brian KB1VBF http://home.comcast.net/~b.denley/index.html - Original Message - From: Don Wilhelm w3...@embarqmail.com To: Brian Denley b.den...@comcast.net Cc: Elecraft Reflector elecraft@mailman.qth.net Sent: Tuesday, January 18, 2011 10:43 PM Subject: Re: [Elecraft] [K2] Ooof.. Update Brian, Actually, that does not make a lot of sense. The T/R switch is too far removed from the KNB2 for that to be a problem (unless you were really wild with the soldering iron :-) ). Try jumpering (with a piece of bent wire) between pins 1 and 6 of the J12 header. If receive comes back to life, you have a problem on the KNB2 board. Let us know the results. 73, Don W3FPR On 1/18/2011 10:26 PM, Brian Denley wrote: I am beginning to think I may have wacked or damaged the PIN diode for the T/R switch while adding the resistor for the KNB2. That might explain no receive or transmit that I am getting now. Does that make sense? Brian KB1VBF http://home.comcast.net/~b.denley/index.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 antenna tuner.
I am trying to decide on an antenna for use at a DX location for 40 meters and up for an upcoming trip to V4 land. I can put up an inverted V dipole at 40 feet high with a length of up to 45 feet on each side of center. I plan to use a 4 to 1 Balun and 450 ohm window line 30 feet long. Anyone have any experience on how the K3 antenna tuner would handle this antenna. on 40 through 10 meters. Thanks for your help. Van W4GIW V47GIW a ham for 59 years. __ 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
