Re: [Elecraft] CM500 headphones
Same problem here in UK, unavailable. Amazon US seem able to ship to UK and probably elsewhere though, just ordered one. G4SGX __ 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] Bias Resistor for microphone
Hello, a friend of mine gave me an old microphone from Philips (serial no. : C944685 ; part no. : 3513 505 00692) which I want to use with my K2 transceiver. The friend said that it should be an electret microphone, so it will need a bias voltage (he said 12V, but I found in the KSB2 manual that some mic's work well with only 5V). It is also written that some mic's need a bias resistor between AF and 5V. Is there someone who has a manual to the described mic or an idea how I can find out how to connect the mic. Thx for your help 77 Benny DL8NWO http://elecraft.365791.n2.nabble.com/file/n6954471/IMAG0168.jpg -- View this message in context: http://elecraft.365791.n2.nabble.com/Bias-Resistor-for-microphone-tp6954471p6954471.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 - Choice of filters in KRX3
Robby, I'm almost a 100% cw contester with a single antenna and I find SO2V of limited but worthwhile use when run rate is dropping off. I always use full break-in so when listening to the 2nd rx in the headphones you only hear signals between your sent characters. This chopping makes it impossible to copy callsigns so you have to have pick this up during gaps in sending; you can then drop the call into the VFO B window with the '/' key (N1MM) to see if it's a dupe. If it's not then at a suitable juncture simply press the 'Pause' button to swap VFos and focus, and hit Enter (ESM!) to send your call, work 'em and then 'Pause' to move back to your run frequency (assuming someone hasn't jumped on it while you've been away!). I normally don't use cluster assistance; if I did SO2V would really be neat as you could simply hotkey VFO B to each spot and work them between running Qs. This is how I understand the use of SO2V so if anyone has diferent/better ideas I'd be interested to hear them. 73, Stewart, GW0ETF Robby.VY2SS wrote: Stewart, I have never tried SO2V operating but I would be interested in hearing more about it since I seem to have the hardware for it. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Choice-of-filters-in-KRX3-tp6932305p6954534.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 Strange Problem
Don't forget the 'quality of PL259 plugs' issue that's has been mentioned on here before. A while ago I nearly pulled my amp apart to check the input relay to see if that was the cause of my intermittent 'Hi SWR' and no rx signal problem. Problem was an intermittent mating of the PL259 centre pin in the socket barrel; either the pin was slightly undersize or the barrel had previously been expanded by a PL259 with too much solder on the pin. 73, Stewart, GW0ETF Rick Bates wrote: Good catch Don. And it should be noted that not all PL-259 mate properly if the outer shaft of the SO-239 (or barrel connector) is too short. It should be seated, tight and with no movement in any direction. Though I don't use pliers; I just crank on it and check them periodically. Rick WA6NHC -Original Message- From: Don Wilhelm Loose PL-259s can cause symptoms like that. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@.qth 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-Strange-Problem-tp6953840p6954574.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] SO2V (was: K3 - Choice of filters in KRX3)
GW0ETF wrote: I normally don't use cluster assistance; if I did SO2V would really be neat as you could simply hotkey VFO B to each spot and work them between running Qs. This is how I understand the use of SO2V so if anyone has diferent/better ideas I'd be interested to hear them. Stewart, you've essentially got it right. The other powerful SO2V technique when operating assisted that I use is to work the bandmap up from bottom of the band in vfoA and down from the top of the band in vfoB, quickly switching back and forth and dropping my call in as stations call qrz. Very high qso rates are obtainable if there are sufficient spots. I've got Web pages with recordings on assisted ssb and cw SO2V: http://n1eu.com/n1mm/so2v.htm http://n1eu.com/n1mm/cwso2v.htm 73, Barry N1EU -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Choice-of-filters-in-KRX3-tp6932305p6954787.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] Bias Resistor for microphone
Benny, I know nothing about that particular microphone, but the bias voltage and resistor value for an electret microphone element is not normally critical. I would try a 5600 ohm resistor between the K2 front panel +5 volt line and the AF pin. 73, Don W3FPR On 11/2/2011 4:53 AM, kruegerbenny wrote: Hello, a friend of mine gave me an old microphone from Philips (serial no. : C944685 ; part no. : 3513 505 00692) which I want to use with my K2 transceiver. The friend said that it should be an electret microphone, so it will need a bias voltage (he said 12V, but I found in the KSB2 manual that some mic's work well with only 5V). It is also written that some mic's need a bias resistor between AF and 5V. Is there someone who has a manual to the described mic or an idea how I can find out how to connect the mic. Thx for your help __ 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] USB interface
Any simple USB to serial converter will do the job ... The only pitfall to avoid is to find a USB to serial converter based on an FTDI chip as the Prolific based converters sometimes have driver issues with software written in certain languages or compiled with certain Microsoft compilers using the Microsoft serial comm library. 73, ... Joe, W4TV After having some problems with my old Prolific-based USB converters, I purchased some Startech ICUSB2321F FTDI USB/Serial converters on eBay. www.ebay.com/itm/250908534890?ssPageName=STRK:MEWNX:IT_trksid=p3984.m1497.l2649 $20 each plus $4 shipping. They work great. I use Vista 32-bit Home Premium. I just plugged in the Startech units, the drivers were automatically found, and everything was up and running in seconds. I'm using these with my K3, KPA500, XG3, and MFJ-998. Phil - AD5X __ 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] USB interface
Pity the won't ship the the UK ROSH compliance I guess. 73 de M0XD (K3 #174, P3 #108, KX3 #???) -- Two things are infinite, the universe and human stupidity. But I'm not so sure about the universe. -- Albert Einstein. On 2 Nov 2011, at 11:12, Phil Debbie Salas wrote: Any simple USB to serial converter will do the job ... The only pitfall to avoid is to find a USB to serial converter based on an FTDI chip as the Prolific based converters sometimes have driver issues with software written in certain languages or compiled with certain Microsoft compilers using the Microsoft serial comm library. 73, ... Joe, W4TV After having some problems with my old Prolific-based USB converters, I purchased some Startech ICUSB2321F FTDI USB/Serial converters on eBay. www.ebay.com/itm/250908534890?ssPageName=STRK:MEWNX:IT_trksid=p3984.m1497.l2649 $20 each plus $4 shipping. They work great. I use Vista 32-bit Home Premium. I just plugged in the Startech units, the drivers were automatically found, and everything was up and running in seconds. I'm using these with my K3, KPA500, XG3, and MFJ-998. __ 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] USB interface
On 11/02/2011 12:31 PM, David Ferrington, M0XDF wrote: Pity the won't ship the the UK ROSH compliance I guess. 73 de M0XD (K3 #174, P3 #108, KX3 #???) Usually, it's just that US merchants find it too much hassle to deal with foreign customers. Jon LA4RT __ 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] USB interface
David Ferrington, M0XDF wrote: Pity the won't ship the the UK ROSH compliance I guess. Why do you want to ship an FTDI-based USB adapter from the USA? They are available from local vendors in every major country, and they're all functionally identical because they use the same FTDI chip. Google for: ftdi usb adapter site:uk FTDI is a relatively small company, still privately owned and still based here in Scotland, that has become a world leader by specializing in just one thing... but doing it better than anyone else. (Does that sound familiar?) -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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 band stacking suggestion
I agree with Don-- use some pattern-based system. To me this seems much better than a scheme which relates the numerals printed on the keys to the corresponding bands. A geometric pattern seems better. I use vertical columns: the left hand column is 40m/80m/160m. The middle column is 10m/15m/20m. The righthand column holds the WARC bands. The 0 key holds 6-Meters. It would be nice if we could also use the remaining two keys on the keypad (SPOT and AFX) as frequency memories. As it is now they are wasted. I know there are only 10 quick memories; couldn't this be expanded to twelve and put these wasted keys to use. 73, Drew AF2Z On Mon, 31 Oct 2011 09:07:52 -0400, Don W3FPR wrote: Barry, I believe you just have to develop some kind of logical system so you remember - it only has to make sense to you. I have mine set so 80, 40, and 30 m are on the top 3 buttons - 1, 2, and 3. The next row is for 20, 15, and 10. Followed by 17, 12, and 6 m on 7, 8, and 9 The 0 button is 160, I do not have 60 meters assigned to one of the buttons. However, I can get to 60 meters easily - I have normal memories 61 through 65 set up for 60 meter channel hopping, and since those are likely the last memory locations I have used, that is what comes up right after I tap MV - tapping MV again puts me on 60 meters with channel hopping enabled. That makes sense to me - you can use my system or develop what makes sense to you. 73, Don W3FPR __ 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] Bias Resistor for microphone
If the microphone is a typical electret, the external resistor should be set for approximately 1 mA. If the voltage source is 3.3V (industry standard for computer/AV mics) the resistor is typically 2.2K. With most amateur equipment the bias voltage is 5V or 8V and a compromise 5.6K resistor is used. In those cases that the bias is 12-13V, 10K is a better choice. In cases where the microphone is not a true electret element but uses a dynamic element with a multi-stage transistor preamplifier (Kenwood desk mics and Icom SM-5, SM-6, SM-20) 1 mA may not be enough current. 73, ... Joe, W4TV On 11/2/2011 4:53 AM, kruegerbenny wrote: Hello, a friend of mine gave me an old microphone from Philips (serial no. : C944685 ; part no. : 3513 505 00692) which I want to use with my K2 transceiver. The friend said that it should be an electret microphone, so it will need a bias voltage (he said 12V, but I found in the KSB2 manual that some mic's work well with only 5V). It is also written that some mic's need a bias resistor between AF and 5V. Is there someone who has a manual to the described mic or an idea how I can find out how to connect the mic. Thx for your help 77 Benny DL8NWO http://elecraft.365791.n2.nabble.com/file/n6954471/IMAG0168.jpg -- View this message in context: http://elecraft.365791.n2.nabble.com/Bias-Resistor-for-microphone-tp6954471p6954471.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 band stacking suggestion
drewko wrote: I agree with Don-- use some pattern-based system. To me this seems much better than a scheme which relates the numerals printed on the keys to the corresponding bands. A geometric pattern seems better. If you have another rig close by that has clearly labeled band buttons, make the K3 the same. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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: COM1 and COM3 question
Hi, all concerned: Operationally, all has been well with 2 K3s and P3s in the station over the last several years. Been thru multiple successful firmware upgrades, yearly recals, and so on, with no external adapters or port-sharing software being used, simply the K3 and P3 utilities, dummy loads, and XG2 for the usual housekeeping. I've long ignored that one K3 has always communicated thru COM1 to its computer and the other thru COM3 to its computer. Afaik they ain't broke; anybody have an explanation, please? Brgds, Dave Windisch, N3HE -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-COM1-and-COM3-question-tp6955511p6955511.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Laptop Serial Port Card for K3
From Edward McCann AG6CX: I am about to set up K3 station and would prefer to provide serial port from newer portable PC (Sony Vaio VGN-FW550F with Windows 7 64 bit)to K3 rather than use USB to Serial adapter. Not being cheap here, but rather trying to provide native serial port interface to keep it simple. Prices of new PCMCIA cards seem to run from $20 to $100 on Amazon and elsewhere. Has anyone had experience with this matter and can recommend a specific card that has worked for you without glitches? Thanks. AG6CX *** __ 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] Laptop Serial Port Card for K3
Keep in mind that what you think is a PCMCIA slot on that new laptop may not actually be PCMCIA at all. It may be CardBus or something else. Make sure to read your use manual to find out what is needed. The cards are not interchangable. 73 jim ab3cv __ 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] USB interface
Good point Ian 73 de M0XDF -- Facts do not cease to exist because they are ignored. -Aldous Huxley, novelist (1894-1963) On 2 Nov 2011, at 13:51, Ian White GM3SEK wrote: David Ferrington, M0XDF wrote: Pity the won't ship the the UK ROSH compliance I guess. Why do you want to ship an FTDI-based USB adapter from the USA? They are available from local vendors in every major country, and they're all functionally identical because they use the same FTDI chip. Google for: ftdi usb adapter site:uk FTDI is a relatively small company, still privately owned and still based here in Scotland, that has become a world leader by specializing in just one thing... but doing it better than anyone else. (Does that sound familiar?) -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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] Laptop Serial Port Card for K3
On 11/2/2011 7:53 AM, edward mccann wrote: Prices of new PCMCIA cards seem to run from $20 to $100 on Amazon and elsewhere. Has anyone had experience with this matter and can recommend a specific card that has worked for you without glitches? Back in 2004, I bought a 2-port PCMCIA card made by Quatech, which has since been on a lot of Field Days, CA QSO Party county expeditions, and even a DX trip. It contains two real hardware serial ports and a pluggable dongle. I've since bought two more for additional laptops. They are not cheap, Quatech is a US company, based in OH, I think. I've observed no RFI issues, and they work with signal returns connected to DB9 connector shells. . In recent years, I've heard good things about Edgeport products. They were not cheap until they went bankrupt a year or two ago. 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] Silly question about DVK3
Hi Olli, Both of your methods work, thanks... Still am unable to get the ESC key to stop a message, even after trying different settings, but placing a - on a function key seems to do the trick. 73, Julius n2wn - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2#4455 Elecraft K3/100 #366 Elecraft K3/100 -- View this message in context: http://elecraft.365791.n2.nabble.com/Silly-question-about-DVK3-tp6948894p6956013.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - What am I observing?
Hi Phil, You may be seeing hum or other noise on his carrier. You'll likely see the same sort of display when observing WWV's signal when they're transmitting their tone/s. Tune around the bands a bit and I think you'll see the double spikes on quite a number of signals, regardless of mode. Ignore the Rose header ... I'm using her computer for this reply. 73! Ken - K0PP elecraftcov...@gmail.com Here's my question: What are the two spikes that I see about 500 Hz to each side of 28.130, approximately 25-30 dB down from the center's peak level (-125 to -130 dB)? These spikes are above my observed floor about 20-25 dB. It's a beautiful thing; I simply am not sure what I'm seeing. One thing I am sure of, when you all respond with the answer, I'll bop myself in the head for not thinking about it! __ 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 Strange Problem
Guy and Don made the right call. Thanks, I was off on a tangent and not the right one for sure. I have another 88' foot long dipole which we use for our CW station at Field Day. So I strung it up in a temporary location and bypassed the other dipole as a test. No more HIGH SWR message. It tunes right to 1:1. So now I have to lower the problem dipole and give it a thorough checkout. If I don't see something right away I can jusdt string up the FD dipole to get going again. Thanks, Guy, Don and others for pushing me down the right road. 73, Joe k4nvj __ 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: W2 REDUCED
I have a like new W2 with the 200 and 2000 watt couplers/cables. Also the serial cable. $210.00 Shipped and insured. Phil W9DVM Philip LaMarche LaMarche Enterprises, Inc mailto:p...@lamarcheenterprises.com p...@lamarcheenterprises.com http://www.lamarcheenterprises.com/ www.LaMarcheEnterprises.com 727-944-3226 727-937-8834 Fax 727-510-5038 Cell http://www.w9dvm.com/ www.w9dvm.com K3 # 1605 KPA500 # 029 P3 #1480 CCA 98-00827 CRA 1701 W9DVM __ 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] Orion I for K3
Caveat Emptor .FWIW: I had an Orion, years back. It was a very good rig. But it was announced that the manufacturer of its signal processor was changing dies which could affect availability and future maintainability of the Orion I. I made a decision then to upgrade to the OMNI VII, because of the OMNI lineage. Boy was I disappointed with the pseudo roofing filter when that rig was employed in the CQP (as compared to the Orion I.) So, in less than a year I turned to the K3. The K3 was a massive improvement for detecting weak signals and separating strong signals. Another consideration is the upgrade path for Orion I vs. the K3. The P3 is a game changer. I don't know how I lived without it. OTOH the spectrum display on the Orion I was useless to me. Then there is the KPA500 which, like the P3, integrates all its functions seamlessly with the K3. As a Ten Tec owner I tried the Ten Tec blog for a limited time. I quit because of the elitist flaming. I'll stick with Elecraft, thank you. 73, Fred __ 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] USB Adapters and RF
I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. But...what is a guy gonna do when RS232 Serial ports are totally discontinued. Turn down or turn off the amp. Hmm! Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? Common Sense is the image of the Creator expressing revealed truth in my mind. - John W. (Kansas) Never interfere with anything that isn't bothering you. __ 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 DVK vs N1MM difficulties
Hi Gang: In the recent CQ WW SSB, I used N1MM 11.10.3 to key the KDVR3 via a microHAM CW Keyer, using the N1MM macros provided by N6ML. It worked, but with every second CQ (press of F1, or ENTER via ESM), N1MM popped up a window complaining about a missing .WAV file, which had to be closed before any further action was possible. The workaround was to close the window and keep going - a royal PITA. I have done this before, with a previous version of N1MM, and I don't remember this problem. Perhaps I should ask for help on the N1MM reflector, but I'm not a member (yet). Any help/hints/suggestions greatfully received. Ralph, 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
Re: [Elecraft] USB Adapters and RF
Lee Buller wrote: I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. But...what is a guy gonna do when RS232 Serial ports are totally discontinued. Turn down or turn off the amp. Hmm! Look very carefully at that statement I am grounded properly; because the evidence suggests otherwise. More specifically, it suggests that the ground terminals for various parts of your shack are not correctly bonded together. Another very common source of RF in the shack is a bad shield connection inside a PL259. A few minutes applying a clamp-on RF current meter to various connecting cables could tell you a great deal. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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] USB Adapters and RF
Very interesting Maybe I should have said...I think I am grounded properly! I will have to check this out. Lee K0WA From: Ian White GM3SEK gm3...@ifwtech.co.uk To: elecraft@mailman.qth.net Sent: Wed, November 2, 2011 2:18:56 PM Subject: Re: [Elecraft] USB Adapters and RF Lee Buller wrote: I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. But...what is a guy gonna do when RS232 Serial ports are totally discontinued. Turn down or turn off the amp. Hmm! Look very carefully at that statement I am grounded properly; because the evidence suggests otherwise. More specifically, it suggests that the ground terminals for various parts of your shack are not correctly bonded together. Another very common source of RF in the shack is a bad shield connection inside a PL259. A few minutes applying a clamp-on RF current meter to various connecting cables could tell you a great deal. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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: COM1 and COM3 question
I'm not sure what the question is. The com port number only matters to the computer, not the radio. The radio has no knowledge of com port numbers. 73, Mike NF4L On 11/2/2011 10:49 AM, David Windisch wrote: Hi, all concerned: Operationally, all has been well with 2 K3s and P3s in the station over the last several years. Been thru multiple successful firmware upgrades, yearly recals, and so on, with no external adapters or port-sharing software being used, simply the K3 and P3 utilities, dummy loads, and XG2 for the usual housekeeping. I've long ignored that one K3 has always communicated thru COM1 to its computer and the other thru COM3 to its computer. Afaik they ain't broke; anybody have an explanation, please? Brgds, Dave Windisch, N3HE -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-COM1-and-COM3-question-tp6955511p6955511.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Silly question about DVK3
Unfortunately they changed N1MM Logger such that it no longer generates an RX; command when Escape is pressed, even when PTT via radio command is enabled. You can program one of the F-keys to send the RX; command instead at least for now - hopefully we can come up with a solution to make the Escape key work again, as that's the most intuitive method, IMO... ~iain / N6ML On Wed, Nov 2, 2011 at 4:49 PM, Julius Fazekas n2wn phriend...@yahoo.com wrote: Hi Olli, Both of your methods work, thanks... Still am unable to get the ESC key to stop a message, even after trying different settings, but placing a - on a function key seems to do the trick. 73, Julius n2wn - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2 #4455 Elecraft K3/100 #366 Elecraft K3/100 -- View this message in context: http://elecraft.365791.n2.nabble.com/Silly-question-about-DVK3-tp6948894p6956013.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] USB Adapters and RF
I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. It is odd that I just answered this same question in a different form on the N1MM Logger list ... *Any time* one feeds an unbalanced antenna with coax and does not have a current balun with a high choking impedance, the coax will act like a random length radial or half of the driven element. When that radial is an odd multiple of 1/4 wave long, the end of the radial will be at a high RF voltage. Old timers will recognize this at the hot mic (RF bites the lips!) scenario. When the RF voltage is high enough, it can upset electronics ... a 5V P-P voltage at the USB port of a computer/peripheral can cancel the 5V (or 3.3V in some systems) USB power and shut down the port. RF voltages higher than 5V P-P can result in *reverse bias* permanently damage some components. Bottom line, be *absolutely sure* to use choking impedance common mode chokes, properly installed, at the appropriate places in your antenna system. Proper points are at the antenna feed point and at the entry window to the building (outboard of the point at which the cable shields are grounded so the choke is working against a low impedance). If you can't do that, only purchase interface products that include a proper over voltage suppressor on the USB power line (to clamp any voltage to 0/+5.5V). Before anyone asks - I do not know which low cost USB to serial converters include voltage suppressors. 73, ... Joe, W4TV On 11/2/2011 2:34 PM, Lee Buller wrote: I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. But...what is a guy gonna do when RS232 Serial ports are totally discontinued. Turn down or turn off the amp. Hmm! Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? Common Sense is the image of the Creator expressing revealed truth in my mind. - John W. (Kansas) Never interfere with anything that isn't bothering you. __ 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] USB Adapters and RF
I see my cut/paste from the other reply left out some important information. The following is edited to add the missing references. *Any time* one feeds an unbalanced antenna with coax and does not have a current balun with a high choking impedance, the coax will act like a random length radial or half of the driven element. When that radial is an odd multiple of 1/4 wave long, the end of the radial will be at a high RF voltage. Old timers will recognize this at the hot mic (RF bites the lips!) scenario. When the RF voltage is high enough, it can upset electronics ... a 5V P-P voltage at the USB port of a computer/peripheral can cancel the 5V (or 3.3V in some systems) USB power and shut down the port. RF voltages higher than 5V P-P can result in *reverse bias* and permanently damage some components. There are two good tutorials on common mode chokes on-line - one by K9YC: http://www.audiosystemsgroup.com/RFI-Ham.pdf and one by W1HIS: http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf I strongly recommend studying both. Bottom line, be *absolutely sure* to use high choking impedance common mode chokes, properly installed, at the appropriate places in your antenna system. Proper points are at the antenna feed point and at the entry window to the building (outboard of the point at which the cable shields are grounded so the choke is working against a low impedance). If you can't do that, only purchase interface products that include a proper over voltage suppressor on the USB power line (to clamp any voltage to 0/+5.5V). Before anyone asks - I do not know which low cost USB to serial converters include voltage suppressors. 73, ... Joe, W4TV On 11/2/2011 3:59 PM, Joe Subich, W4TV wrote: I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. It is odd that I just answered this same question in a different form on the N1MM Logger list ... *Any time* one feeds an unbalanced antenna with coax and does not have a current balun with a high choking impedance, the coax will act like a random length radial or half of the driven element. When that radial is an odd multiple of 1/4 wave long, the end of the radial will be at a high RF voltage. Old timers will recognize this at the hot mic (RF bites the lips!) scenario. When the RF voltage is high enough, it can upset electronics ... a 5V P-P voltage at the USB port of a computer/peripheral can cancel the 5V (or 3.3V in some systems) USB power and shut down the port. RF voltages higher than 5V P-P can result in *reverse bias* permanently damage some components. Bottom line, be *absolutely sure* to use choking impedance common mode chokes, properly installed, at the appropriate places in your antenna system. Proper points are at the antenna feed point and at the entry window to the building (outboard of the point at which the cable shields are grounded so the choke is working against a low impedance). If you can't do that, only purchase interface products that include a proper over voltage suppressor on the USB power line (to clamp any voltage to 0/+5.5V). Before anyone asks - I do not know which low cost USB to serial converters include voltage suppressors. 73, ... Joe, W4TV On 11/2/2011 2:34 PM, Lee Buller wrote: I run legal limit on some contests. I seem to burn up USB to Serial devices. I am grounded properly. I am suspect of these things in high RF fields. But...what is a guy gonna do when RS232 Serial ports are totally discontinued. Turn down or turn off the amp. Hmm! Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? Common Sense is the image of the Creator expressing revealed truth in my mind. - John W. (Kansas) Never interfere with anything that isn't bothering you. __ 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
Re: [Elecraft] K3: COM1 and COM3 question
At 07:49 AM 11/2/2011 -0700, you wrote: I've long ignored that one K3 has always communicated thru COM1 to its computer and the other thru COM3 to its computer. Afaik they ain't broke; anybody have an explanation, please? Brgds, Dave Windisch, N3HE Hi No problem, and not unusual. The computer OS assigns the COM number to devices, in this case the Serial Ports, and assures they operate without conflict with any other device in/attached to the computer. Generally the serial port is often but not always set as COM1. If you attach a device to the serial port and it works right away ... then they are both set to the same COM number. If the COM numbers are not the same they will not communicate and you will have to change the number either at the computer or the device/program. Communications between computer and device using COM1 to COM1 is the same as COM3 to COM3. Now if you swap computers/radios in your shack you will also have to change the COM# on the radios (best place to make the change). Jim, VE3CI __ 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 Strange Problem
On Tue, Nov 1, 2011 at 9:24 PM, Joe Ford k4...@yahoo.com wrote: ... I'll take down the ant and inspect it.But it works fine on all the other bands. Tunes with no problems all other bands. The KAT100 tunes but the KAT3 doesn't? Tuning all bands using a single antenna is always dicey somewhere.Success is NOT guaranteed, but fortunate. You are often operating at the fringe of a tuner's range on one band or another. The KAT 100 and KAT3 are not the same tuners, have different coils, different tradeoffs, and different firmware to drive it. Though the ranges are approximately the same, give the two units an impedance at the far fringe, and one or the other may not be able tune it properly. Change any of the coax lengths after the tuner, INCLUDING THOSE INSIDE THE K3, by switching, exchange, or whatever, and what just barely got tuned the last time by the same tuner may not now tune. Though this may not be your problem at all, a friend of mine was having troubles of this mysterious sort. Eventually he discovered that he had not soldered either the braid OR the center conductor on a PL259. It worked for YEARS before it finally started getting intermittent. Another ham had a balun that was gradually going bad and overheating, apparently shorting some turns and causing mysterious changes in SWR. He discovered that because during a QRO contest it caught fire and completely shorted out. Actually his wife discovered it looking out the window at the tower out in the field, and came and told him his tower was on fire. The way to validate and check out one of these compromise antennas, is to run it when it is brand new and working spiffy. SWEEP the MFJ CONTINUOUSLY from the bottom of the lowest band to the top of the highest band. Note the actual resonances you find along the way. Write down those frequencies, the R at those resonant frequencies, and the 2:1 SWR points above and below all of those resonances. Entirely possible that all of the resonances are outside the ham bands. Keep these figures as a reference. When you have trouble, repeat the measurements. IF there is trouble in the antenna, those readings will change. If the coax gets waterlogged, the 2:1 SWR points will broaden out significantly and the R values at resonance will likely change. If something gets broken the resonances will all move on you. If you have an AIM 4170 as your analyzer, just sweep it from 0.5 to 30 MHz and save the file. You can then import it and have an onscreen compare between the old and new readings. 73, Guy. __ 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: COM1 and COM3 question
Jim, Sorry to disagree, but there is no way to set the COM Port on either the K3 nor the P3. Setting the baud rate - yes, but the computer (or the computer application software) determines which COM port is to be assigned to a particular connector or cable. 73, Don W3FPR On 11/2/2011 4:30 PM, Jim Dunstan wrote: Generally the serial port is often but not always set as COM1. If you attach a device to the serial port and it works right away ... then they are both set to the same COM number. If the COM numbers are not the same they will not communicate and you will have to change the number either at the computer or the device/program. Communications between computer and device using COM1 to COM1 is the same as COM3 to COM3. Now if you swap computers/radios in your shack you will also have to change the COM# on the radios (best place to make the change). Jim, VE3CI __ 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: COM1 and COM3 question
That is simply not true. The K3 has no idea what COM port on the computer it is talking to. Please describe how you change the COM port designation on the K3. Dave AB7E On 11/2/2011 1:30 PM, Jim Dunstan wrote: Hi No problem, and not unusual. The computer OS assigns the COM number to devices, in this case the Serial Ports, and assures they operate without conflict with any other device in/attached to the computer. Generally the serial port is often but not always set as COM1. If you attach a device to the serial port and it works right away ... then they are both set to the same COM number. If the COM numbers are not the same they will not communicate and you will have to change the number either at the computer or the device/program. Communications between computer and device using COM1 to COM1 is the same as COM3 to COM3. Now if you swap computers/radios in your shack you will also have to change the COM# on the radios (best place to make the change). Jim, VE3CI __ 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: COM1 and COM3 question
Hi, all concerned: A gent who shall remain anonymous provided an explanation directly. The Windows DEVICE MANAGER can be used to assign port numbers up to 256 to the physical hardware COM adapters. Tks and brgds to all who replied. Dave Windisch, N3HE -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-COM1-and-COM3-question-tp6955511p6957155.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: COM1 and COM3 question
I suspect he means going into device manager and changing the COM port designation for the port the radio is connected to. That's the only thing that makes sense to me at least. 73 Greg On Wed, Nov 2, 2011 at 2:59 PM, David Gilbert xda...@cis-broadband.comwrote: That is simply not true. The K3 has no idea what COM port on the computer it is talking to. Please describe how you change the COM port designation on the K3. Dave AB7E On 11/2/2011 1:30 PM, Jim Dunstan wrote: Hi No problem, and not unusual. The computer OS assigns the COM number to devices, in this case the Serial Ports, and assures they operate without conflict with any other device in/attached to the computer. Generally the serial port is often but not always set as COM1. If you attach a device to the serial port and it works right away ... then they are both set to the same COM number. If the COM numbers are not the same they will not communicate and you will have to change the number either at the computer or the device/program. Communications between computer and device using COM1 to COM1 is the same as COM3 to COM3. Now if you swap computers/radios in your shack you will also have to change the COM# on the radios (best place to make the change). Jim, VE3CI __ 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: COM1 and COM3 question
At 05:38 PM 11/2/2011 -0400, you wrote: Jim, Sorry to disagree, but there is no way to set the COM Port on either the K3 nor the P3. Setting the baud rate - yes, but the computer (or the computer application software) determines which COM port is to be assigned to a particular connector or cable. 73, Don W3FPR I am sure you are correct. I don't own a K3. But the original post mentioned two K3 operating positions each controlled by separate computers. One computer uses Com1 on the RS232 port and the other uses Com3. There was no question ... but a request for an explanation. Perhaps you can provide the explanation. Thanks Jim, VE3CI __ 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: COM1 and COM3 question
Jim, Let me try an explanation as simple as I can put it. The COM port numbers are set at the computer end. First the OS assigns port numbers to the physical COM ports that are present on that computer. You connect a cable and a terminal device (the K3 or P3 or several of them) each to a physical port on that computer - you have to know which connector on the computer corresponds to COM1 through COM nnn - normally a computer with one true serial port will have COM1 on that connector - for those with multiple true serial ports, you have to know which number corresponds with each port - that information is normally silkscreened on the motherboard. For add-on cards, consult the card instructions. With USB adapters, you can usually find the relationship in Device Manager - the numbers are usually higher. If you don't know which adapter is which, unplug it and see which port numbers go away, then plug it back in and see which numbers appear. After you know which port numbers are assigned to which serial connector, then you can go to the software application and tell it to talk to a particular device over a particular COM port (the one you have cabled to your device). Some applications will scan through the available ports to try to find what it thinks is a valid open port with the desired device connected (and powered on) at the other end of the cable. The software application will seize the port and makes it busy to all other applications. The operating system passes whatever flows on that port over to the application. The terminal device does not know which computer port it is connected to - it sees data coming in over the TXD signal line and responds on the RXD signal line - the computer and application sorts out which device it is talking to. 73, Don W3FPR On 11/2/2011 6:25 PM, Jim Dunstan wrote: At 05:38 PM 11/2/2011 -0400, you wrote: Jim, Sorry to disagree, but there is no way to set the COM Port on either the K3 nor the P3. Setting the baud rate - yes, but the computer (or the computer application software) determines which COM port is to be assigned to a particular connector or cable. 73, Don W3FPR I am sure you are correct. I don't own a K3. But the original post mentioned two K3 operating positions each controlled by separate computers. One computer uses Com1 on the RS232 port and the other uses Com3. There was no question ... but a request for an explanation. Perhaps you can provide the explanation. Thanks Jim, VE3CI __ 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: COM1 and COM3 question
Is, perhaps, someone being confused because they see that they must select the com port associated with the radio in the program at the computer (just as it is in the Elecraft Utility programs), they think that it is at the radio that selection is being made - just as they enter frequency and other data at the computer that changes things at the radio? Whew - that was a sentence ... Ron AC7AC -Original Message- At 05:38 PM 11/2/2011 -0400, you wrote: Jim, Sorry to disagree, but there is no way to set the COM Port on either the K3 nor the P3. Setting the baud rate - yes, but the computer (or the computer application software) determines which COM port is to be assigned to a particular connector or cable. 73, Don W3FPR I am sure you are correct. I don't own a K3. But the original post mentioned two K3 operating positions each controlled by separate computers. One computer uses Com1 on the RS232 port and the other uses Com3. There was no question ... but a request for an explanation. Perhaps you can provide the explanation. Thanks Jim, VE3CI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft FS XG2 Sig Gen
Sig Gen is mounted in an Altoids tin. Asking $50.00. I ship in CONUS. Please reply off list... Thank youGil K8EAG __ 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 Strange Problem
Guy, Thanks for the tips. My coax jumpers are some I bought from a company I don't remember exactly which one. It was one that I saw recommended somewhere. Unfortunately the PL259s are crimped on but they seem to work okay. Just to be sure, when I was troubleshooting the problem I replaced the jumper with no change. I can't remember if I traded with the K2. I might have. I need to change the coax anyway because I need them to be a little longer. If I can find someone who sells good quality with soldered PL259s I'll probably order them, otherwise I'll just make my on. I lowered the dipole, looked it over but didn't see anything except the ends a rusting a little where they are tied to the insulators. Unfortunately it doesn't hang free and clear. I have lots of trees. I tried to reroute it where it would be more in the clear. Then I put it back up and it performs the same. I guess the next step is to replace it with the other dipole that tested okay. When I did the test I just hung the dipole between 2 trees. I did not hang it where the problem dipole is so it was not a 100% valid test. I'll try switching the 2 and see what happens. At least the test confirmed the switch and balun are okay. Thanks for the suggestion about recording the swr across the antenna bandwidth when it is new. I can plot a little graph and save it for future use. Even for my beam which is not new it will be a good thing to have. Joe k4nvj From: Guy Olinger K2AV olin...@bellsouth.net To: Joe Ford k4...@yahoo.com Cc: Elecraft elecraft@mailman.qth.net; w3...@embarqmail.com w3...@embarqmail.com Sent: Wednesday, November 2, 2011 3:49 PM Subject: Re: K3 Strange Problem On Tue, Nov 1, 2011 at 9:24 PM, Joe Ford k4...@yahoo.com wrote: ... I'll take down the ant and inspect it.But it works fine on all the other bands. Tunes with no problems all other bands. The KAT100 tunes but the KAT3 doesn't? Tuning all bands using a single antenna is always dicey somewhere.Success is NOT guaranteed, but fortunate. You are often operating at the fringe of a tuner's range on one band or another. The KAT 100 and KAT3 are not the same tuners, have different coils, different tradeoffs, and different firmware to drive it. Though the ranges are approximately the same, give the two units an impedance at the far fringe, and one or the other may not be able tune it properly. Change any of the coax lengths after the tuner, INCLUDING THOSE INSIDE THE K3, by switching, exchange, or whatever, and what just barely got tuned the last time by the same tuner may not now tune. Though this may not be your problem at all, a friend of mine was having troubles of this mysterious sort. Eventually he discovered that he had not soldered either the braid OR the center conductor on a PL259. It worked for YEARS before it finally started getting intermittent. Another ham had a balun that was gradually going bad and overheating, apparently shorting some turns and causing mysterious changes in SWR. He discovered that because during a QRO contest it caught fire and completely shorted out. Actually his wife discovered it looking out the window at the tower out in the field, and came and told him his tower was on fire. The way to validate and check out one of these compromise antennas, is to run it when it is brand new and working spiffy. SWEEP the MFJ CONTINUOUSLY from the bottom of the lowest band to the top of the highest band. Note the actual resonances you find along the way. Write down those frequencies, the R at those resonant frequencies, and the 2:1 SWR points above and below all of those resonances. Entirely possible that all of the resonances are outside the ham bands. Keep these figures as a reference. When you have trouble, repeat the measurements. IF there is trouble in the antenna, those readings will change. If the coax gets waterlogged, the 2:1 SWR points will broaden out significantly and the R values at resonance will likely change. If something gets broken the resonances will all move on you. If you have an AIM 4170 as your analyzer, just sweep it from 0.5 to 30 MHz and save the file. You can then import it and have an onscreen compare between the old and new readings. 73, Guy. __ 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 Strange Problem
There is nothing wrong with crimped connectors if done properly. Is this an antenna that was working fine and then stopped on one band with absolutely no changed in the shack or coax etc? What band is out of whack...I apologize for missing most of this thread. Mike W0MU J6M CQ WW DX CW Contest 2011 J6/W0MU November 21 - December 1 2011 W0MU-1 CC Cluster w0mu.net On 11/2/2011 6:55 PM, Joe Ford wrote: Guy, Thanks for the tips. My coax jumpers are some I bought from a company I don't remember exactly which one. It was one that I saw recommended somewhere. Unfortunately the PL259s are crimped on but they seem to work okay. Just to be sure, when I was troubleshooting the problem I replaced the jumper with no change. I can't remember if I traded with the K2. I might have. I need to change the coax anyway because I need them to be a little longer. If I can find someone who sells good quality with soldered PL259s I'll probably order them, otherwise I'll just make my on. I lowered the dipole, looked it over but didn't see anything except the ends a rusting a little where they are tied to the insulators. Unfortunately it doesn't hang free and clear. I have lots of trees. I tried to reroute it where it would be more in the clear. Then I put it back up and it performs the same. I guess the next step is to replace it with the other dipole that tested okay. When I did the test I just hung the dipole between 2 trees. I did not hang it where the problem dipole is so it was not a 100% valid test. I'll try switching the 2 and see what happens. At least the test confirmed the switch and balun are okay. Thanks for the suggestion about recording the swr across the antenna bandwidth when it is new. I can plot a little graph and save it for future use. Even for my beam which is not new it will be a good thing to have. Joe k4nvj From: Guy Olinger K2AVolin...@bellsouth.net To: Joe Fordk4...@yahoo.com Cc: Elecraftelecraft@mailman.qth.net; w3...@embarqmail.comw3...@embarqmail.com Sent: Wednesday, November 2, 2011 3:49 PM Subject: Re: K3 Strange Problem On Tue, Nov 1, 2011 at 9:24 PM, Joe Fordk4...@yahoo.com wrote: ... I'll take down the ant and inspect it.But it works fine on all the other bands. Tunes with no problems all other bands. The KAT100 tunes but the KAT3 doesn't? Tuning all bands using a single antenna is always dicey somewhere.Success is NOT guaranteed, but fortunate. You are often operating at the fringe of a tuner's range on one band or another. The KAT 100 and KAT3 are not the same tuners, have different coils, different tradeoffs, and different firmware to drive it. Though the ranges are approximately the same, give the two units an impedance at the far fringe, and one or the other may not be able tune it properly. Change any of the coax lengths after the tuner, INCLUDING THOSE INSIDE THE K3, by switching, exchange, or whatever, and what just barely got tuned the last time by the same tuner may not now tune. Though this may not be your problem at all, a friend of mine was having troubles of this mysterious sort. Eventually he discovered that he had not soldered either the braid OR the center conductor on a PL259. It worked for YEARS before it finally started getting intermittent. Another ham had a balun that was gradually going bad and overheating, apparently shorting some turns and causing mysterious changes in SWR. He discovered that because during a QRO contest it caught fire and completely shorted out. Actually his wife discovered it looking out the window at the tower out in the field, and came and told him his tower was on fire. The way to validate and check out one of these compromise antennas, is to run it when it is brand new and working spiffy. SWEEP the MFJ CONTINUOUSLY from the bottom of the lowest band to the top of the highest band. Note the actual resonances you find along the way. Write down those frequencies, the R at those resonant frequencies, and the 2:1 SWR points above and below all of those resonances. Entirely possible that all of the resonances are outside the ham bands. Keep these figures as a reference. When you have trouble, repeat the measurements. IF there is trouble in the antenna, those readings will change. If the coax gets waterlogged, the 2:1 SWR points will broaden out significantly and the R values at resonance will likely change. If something gets broken the resonances will all move on you. If you have an AIM 4170 as your analyzer, just sweep it from 0.5 to 30 MHz and save the file. You can then import it and have an onscreen compare between the old and new readings. 73, Guy. __ 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:
[Elecraft] K3 and MT63: XMIT Non-Copy
I am trying to get my K3 to properly transmit in the MT63 digital mode, (1K, max interleave), on a USAF MARS net. Frequency just above 4 MHZ. The KBPF3 module is installed. I was running MIXW2.2, using the same installation and settings that used to run perfectly on my TS-940S. Our net is standardized so everyone runs USB with the MT63 1K channel centered exactly 1 KHZ above dial frequency. I use the line input/output on the K3. In USB mode I set computer sound card output in s/w so that with power out set to 100W, and line-in level at 10, the rig produces 50W and absolutely no ALC. Compression was backed down to zero. Using TX TEST and headphones, the transmit audio sounds clean and distortion free. Transmit EQ settings are factory default. Comments from net members are the audio sounds clean, and well centered on frequency, (+ 3HZ within tolerance). With live transmit, monitoring the signal has no evidence of distortion. The problem is the print is double-spaced, with long strings of blanks, and all characters are lower case. Also much garble not evident on the TS-940S. I realize the guys recommend using DATA mode, but this net mixed voice and data kind of tough to be switching back and forth. My copy on receive is as good as ever, just transmit. I¹m thinking there¹s some kind of DSP issue going on here, even though compression is at 0. Any ideas? Thanks Dan Sherwood AFA9LV / WA6PZK __ 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] Remote control of a K3?
Hi, Has anyone set up their K3 to be used remotely with HRD? Does it work well with a laptops speakers and mike? What type of cables do I need for the connection of the sound card (I presume it is mono in)? Or is it stereo cables? Thanks for any help1 -- View this message in context: http://elecraft.365791.n2.nabble.com/Remote-control-of-a-K3-tp6957747p6957747.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 MT63: XMIT Non-Copy
Dan, I think your statement about ALC=0 is the key.. With the K3, increase the audio drive until ALC= 4 bars (with the 5th bar flickering) for normal audio drive. With that done, the K3 will propery transmit at the level set on the Power knob. The onset of ALC in the K3 is at the the 5th bar on the ALC meter - so you did not have sufficient audio drive. It should make no difference between DATA A and SSB mode - except that in DATA A mode, the Compression is automatically set to zero. Since you said you had compression set to zero, SSB mode should work just fine. 73, Don W3FPR On 11/2/2011 10:26 PM, Dan Sherwood wrote: I am trying to get my K3 to properly transmit in the MT63 digital mode, (1K, max interleave), on a USAF MARS net. Frequency just above 4 MHZ. The KBPF3 module is installed. I was running MIXW2.2, using the same installation and settings that used to run perfectly on my TS-940S. Our net is standardized so everyone runs USB with the MT63 1K channel centered exactly 1 KHZ above dial frequency. I use the line input/output on the K3. In USB mode I set computer sound card output in s/w so that with power out set to 100W, and line-in level at 10, the rig produces 50W and absolutely no ALC. Compression was backed down to zero. Using TX TEST and headphones, the transmit audio sounds clean and distortion free. Transmit EQ settings are factory default. Comments from net members are the audio sounds clean, and well centered on frequency, (+ 3HZ within tolerance). With live transmit, monitoring the signal has no evidence of distortion. The problem is the print is double-spaced, with long strings of blanks, and all characters are lower case. Also much garble not evident on the TS-940S. I realize the guys recommend using DATA mode, but this net mixed voice and data kind of tough to be switching back and forth. My copy on receive is as good as ever, just transmit. I¹m thinking there¹s some kind of DSP issue going on here, even though compression is at 0. __ 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
