Re: [Elecraft] RF Speech Processors
On Tue, 12 Jan 2010 21:16:15 -0800 (PST), Wes Stewart wrote: >I built one years ago, but personally, I'm partial to split-band >processing :-) That's the sort of sophisticated broadcast stuff I was referring to. Not cheap, makes rock and roll radio stations LOUD! The Aphex Dominator is a (relatively) low cost example. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K3] Noise reduction & Notch
Anyone have any info on this? I've noticed that I am unable to operate the NR & NTCH independantly on the main & sub receiver. If I turn either control on, it's on for both receivers. Can't turn it on for one receiver and have it off for the other like you can for the Preamp & the NB. I installed the 2nd DSP for the Sub receiver. Why doesn't it have it's own NR & Notch? Stan Rife W5EWA __ 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] Yamaha CM500 headset at B&H for <$40
Yep! I got an email saying mine had been shipped also. Guess the ship finally came in! Dave W7AQK - Original Message - From: "Jorge Diez - CX6VM" To: "'Elecraft List'" Sent: Tuesday, January 12, 2010 6:57 AM Subject: Re: [Elecraft] Yamaha CM500 headset at B&H for <$40 > Hello, > > B&H is shipping right now the CM500. > > I did my order December 11th, today I received an email telling me that > was > shipped. > > 73, > Jorge > CX6VM __ 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] RF Speech Processors
--- On Tue, 1/12/10, Jim Brown wrote: All of which is why we've not heard much about folks trying RF speech processing. :) 73, Jim K9YC I built one years ago, but personally, I'm partial to split-band processing :-) So were the Kenwood engineers that designed the TS-870, arguably one of the better sounding radios. Wes N7WS __ 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] Want to buy a K3
Bill, Where you set the "kick-in" point is largely up to your ears. The slope on the crystal filter is more gentle than the steep sided DSP filters - as a result, the crystal filter actual width will vary depending on whether you refer to the -3 dB point, or the -6 dB points or even the -10 dB points. In other words, if you activate a crystal filter at a width wider than the DSP filter width, you will have a passband that is more representative of the crystal filter passband than the DSP passband.. So the real answer depends on your ears and what you want to hear. 73, Don W3FPR Bill VanAlstyne W5WVO wrote: > You bring up the interesting question of configuration for the narrow > filter -- i.e., where do you set it to "kick in"? I opted for 1.9 kHz, you > opted for 2.1 kHz. I'm curious as to where others have configured the 1.8 > kHz SSB filter to kick in -- and why. > > Bill W5WVO > > __ 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] Want to buy a K3
Hi Bill, Just do a test, it is so easy to modify with the Elecraft utility. In my severe environment, I've noticed a slight difference at 2.1 when using the 2.8 or the 1.8, so I decided to use the 2.1 with the 1.8 it's more sharp but it is my own pereception and others can have different feeling on it. 73's Philippe A65BI >>> "Bill VanAlstyne W5WVO" 12-01-2010 20:03 >>> You bring up the interesting question of configuration for the narrow filter -- i.e., where do you set it to "kick in"? I opted for 1.9 kHz, you opted for 2.1 kHz. I'm curious as to where others have configured the 1.8 kHz SSB filter to kick in -- and why. Bill W5WVO -- From: "Philippe Trottet" Sent: Monday, January 11, 2010 10:05 PM To: Subject: Re: [Elecraft] [K3] Want to buy a K3 > Fully confirm this assessment ! > The 1.8Khz 8 pole in a congested environment is a must. I have it in > addition of the 2.8Khz. > Considering the H polar of my 40m antenna receiving signals from the close > East, most are regular Ham's from ex-USSR area and also very active > pirates on that side, up to 59 +30 is common. > Sometime ago two of those big guns were respectively on 7.085 and 7.090 > with certainly old amplifiers spreading their signal several KHz away from > the normal spectrum with saturated audio, I've just clicked on the 1.8Khz > filter and as Bill says, FC to 1.05~1.10 and was able to listen clearly > and do the contact with JA8BOF on 7.088. > Just a trick, to program with the Elecraft utility the1.8Khz filter, > starting from 2.1Khz. > When listening with the 2.8 moving the width down will activate > automatically at 2.1Khz the 1.8 filter, it is helpful. > 73's > Philippe A65BI > http://www.qrz.com/callsign/A65BI > K3#3616 > " By Ham's, For Ham's...What else ! " > > ( http://www.qrz.com/callsign/A65BI ) > "Bill VanAlstyne W5WVO" 12-01-2010 6:53 >>> > One thing the other posters have not mentioned (probably not being SSB > types) is a narrow filter for SSB. I have the 1.8 kHz 8-pole filter, and > it > is amazing. You do have to reduce the hi-cut a bit to center the voice in > the narrower passband (an FC of 1.05 is about ideal for most male voices). > What you get is remarkable immunity from overload by extremely strong, > close-in signals (providing of course that they aren't actually > splattering, > which you really can't do anything about). For SSB contest work, this > filter > is a must. If you don't work SSB much and/or aren't at all interested in > SSB > contesting/DXing, then you can probably skip it. But for me it's been a > terrific addition. > > Bill W5WVO > > -- > From: "John W2XS" > Sent: Monday, January 11, 2010 2:28 PM > To: > Subject: Re: [Elecraft] [K3] Want to buy a K3 > >> >> You will get many opinions on this. Here's mine. I am primarily a CW >> operator but I like to listen to AM BCB and Shortwave stations. My >> antenna >> is a multi-band Cobra Ultralite fed with ladder line and a Balun Designs >> 4:1 >> Tuner Balun. >> >> 1. KAT3 Tuner. If you have matched, coax-fed antennas, then you may not >> need this. But it is a great addition to those of us with multi-band >> antennas. It remembers the settings on small segments of each band which >> is >> incredibly convenient for QSYing, especially on 160m. >> >> 2. KBPF3 General Coverage Filter. If you stick only to the ham bands, >> then >> you may not need this. But it was on my "must-have" list (as was the >> KAT3). >> I have all 100 memories filled with short-wave and AM BCB stations all >> over >> the frequency spectrum. I've been listening to Radio China and Radio >> Cairo >> a >> lot lately. >> >> 3. KPA3 100W Amplifier. Many people start out with the 10W option. I >> have >> had a lot of success with the K2 at 10W. But I wanted the K3 to be my >> "QRO" >> rig as it replaced a Kenwood TS-930S (which is a fine but aging rig). >> >> 4. KRX3 Sub receiver. I added this after a year and find it is >> incredible >> for working split-frequency DX stations. I cannot see ever going back to >> the "push the TF Set" button days to try and figure out where the heck >> the >> DX station is listening. If you are not a DXer, or don't care about >> diversity reception, etc, then you may not need this. >> >> 5. Filters. This was (and is) a hot topic. But I stand by my initial >> decision, which was: >> >> A. 200 and 500 Hz 5-pole filters. There was an early posting that said >> that >> only the first 30 dB of slope is critical, and that a 5-pole filter would >> be >> more than enough. I went with that, and am happy. There probably is some >> (small and subtle?) difference between the 5-pole and 8-pole performance, >> but the main purpose of a roofing filter is to prevent the DSP (the main >> selectivity in the rig) from overloading. Signals are generally weak >> right >> now, but will start to get stronger as conditions improve. It is
Re: [Elecraft] [K2] K2 -- Audio output
Garry, To get the best filter alignment (both SSB and CW), use Spectrogram. Take a look at the K2 Dial Calibration article on my website www.w3fpr.com as well as the information provided by Tom Hammond on aligning the K2 filters using Spectrogram at both www.n0ss.net and the Elecraft Builder's Resource page. The settings in the manual will provide you with usable filters, but they are not necessarily optimum. Spectrogram allows you to optimize the filters for your particular K2 - If you have perfect pitch, then your ear can likely do as well as Spectrogram, but some of us are not blessed with that gift. 73, Don W3FPR 2rGarry wrote: > Thanks for the suggestions guys. I have come to the conclusion that the > audio is probably where it should be and that there is nothing amiss within > the audio circuitry. I just installed the Ksb2 today and have that to play > with. Listening with the ssb filters does make a fair difference in audio > sound compared with the cw filters. I have to go through the manual a > couple more times and to perhaps repeat the alignment procedure as well > before I will get a good grasp on what is required. I currently am getting > decent audio reports but not up to what my friends are used to hearing me > sound like on my Icom or Yaesu, but I suspect I will never get the radio to > that stage. I do have a scope so maybe I can utilize it to best advantage > for setting up the audio and the filters. > > Just wanted to pass along my thanks for the replies received to my question. > > 73 > > Garry > >> that typically the case with the K2? Or should I be looking for a >> problem? As I said, with the headphones there is no issue whatsoever, I >> can feed audio to the headset and to the computer input (for psk) with no >> problem by just using the headphone jack and a splitter. >> >> I'm wondering if I need to build an amplified speaker for monitoring >> without having to wear the headphones. >> >> Thanks. >> >> Garry -- K2 6849 >> >> > > > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 > 02:35:00 > > __ 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 RF board X7-X11
Conway, There is space to solder them. Solder at about the height of the top of the RPaks, and clip the leads off just above that point so the KSB2 option will fit. Hole the soldering iron tip so that is lots of contact with the crystal case to maximize the heat transfer. The solder does not have to be *exactly* at the base of the crystals - just as far down toward the base as is practical. 73, Don W3FPR Conway Yee wrote: > Don, > > The issue is that the ground leads on the left side of the case is between > a resistor pack and the crystal case. There isn't the room to solder the > ground lead after soldering the crystal in place. > > Should I solder the ground leads onto the case BEFORE I solder the crystal > onto the PC board? > > tnx. > Conway Yee > > __ 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] K2 -- Audio output
Thanks for the suggestions guys. I have come to the conclusion that the audio is probably where it should be and that there is nothing amiss within the audio circuitry. I just installed the Ksb2 today and have that to play with. Listening with the ssb filters does make a fair difference in audio sound compared with the cw filters. I have to go through the manual a couple more times and to perhaps repeat the alignment procedure as well before I will get a good grasp on what is required. I currently am getting decent audio reports but not up to what my friends are used to hearing me sound like on my Icom or Yaesu, but I suspect I will never get the radio to that stage. I do have a scope so maybe I can utilize it to best advantage for setting up the audio and the filters. Just wanted to pass along my thanks for the replies received to my question. 73 Garry 2rGarry wrote: > > The speaker audio seems a trifle low on my K2. With headphones it's good > but I have to crank the volume control quite high to get decent audio > output from the speaker. I suspect that the audio is just as designed. Is > that typically the case with the K2? Or should I be looking for a > problem? As I said, with the headphones there is no issue whatsoever, I > can feed audio to the headset and to the computer input (for psk) with no > problem by just using the headphone jack and a splitter. > > I'm wondering if I need to build an amplified speaker for monitoring > without having to wear the headphones. > > Thanks. > > Garry -- K2 6849 > -- View this message in context: http://n2.nabble.com/K2-Audio-output-tp4287879p4303130.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
Re: [Elecraft] K2 RF board X7-X11
Don, The issue is that the ground leads on the left side of the case is between a resistor pack and the crystal case. There isn't the room to solder the ground lead after soldering the crystal in place. Should I solder the ground leads onto the case BEFORE I solder the crystal onto the PC board? tnx. Conway Yee __ 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: Inrad 1.8Khz 8-Pole Filters
125.95 + shipping new. But I'd like to get $100 shipped. Any takers? Please reply directly so that I don't miss it. Thanks much gentlemen. ~Brett (KC7OTG) __ 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] Question about cheap and dirty signal tracing
Thank you Don, and Tom, for your replies. Don Wilhelm wrote: > It is normal to see a higher response touching a random, wire to C6 > compared to touching the same wire to W6. The C6 location is a high > impedance point while the W6 and D6 locations are low impedance - the > capacitive dividers (C7,8 and C4,5) reduce the impedance. That makes sense. I knew something was odd when the signal levels at the test points before and after C6 gave the same but lower audible signal. > If you are getting about the same response at D6 and W6, then the > bandpass filter is probably OK. It would be nice to get my problems resolved in time for the local provincial QSO party which takes place around the third weekend in April. I think the only way to be sure whether the receiver of my K2 is up to snuff or not is to order an XG2 signal generator kit. That will help me to get a more accurate idea on the receivers sensitivity when running with and without the KAT2 (in case the KAT2 has been contributing in any way to apparent sensitivity problems). If the cheap and dirty tracing doesn't seem to turn up any issues I'll have to start getting in there with the scope and check the voltage measurements at various points noted in the manual. __ 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] Inrad 1.5 khz SSB filters
Thanks much! I just bought 2. ~Brett(KC7OTG) On Tue, 2010-01-12 at 11:44 -0800, Jim Balls - M0CKE wrote: > Back in stock, Ordered mine today > > http://www.inrad.net/product.php?productid=299&cat=140&page=1 __ 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 RF board X7-X11
Conway, Use a hot soldering iron - 800 deg F - to heat the crystal cases quickly. Use a flat bladed screwdriver to form the ground leads up against the crystal case. Then apply the soldering iron (out a bit of solder on the iron tip to aid heat transfer). Hold the solder on the crystal can a bit away from the soldering iron tip, and as soon as the solder begins to melt, move the end of the solder over to the crystal case, soldering iron, ground wire junction - that adds a bit of flux to the combination. Remove the heat and observe a nice smooth solder connection. Important is to form the wire into contact with the crystal case before beginning the process - then adding the extra flux when the solder begins to flow. 73, Don W3FPR Conway Yee wrote: > What is the best way to solder X7-X11 crystals? The instructions say to > solder two ground leads on the side. The ground leads on the left are > between the crystal and the resistor packs. > > I think I should solder the ground leads onto the crystals before > soldering the leads onto the crystal case (at least on the left side if > not both). > > Options? > > __ 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 RF board X7-X11
What is the best way to solder X7-X11 crystals? The instructions say to solder two ground leads on the side. The ground leads on the left are between the crystal and the resistor packs. I think I should solder the ground leads onto the crystals before soldering the leads onto the crystal case (at least on the left side if not both). Options? tnx. Conway Yee, N2JWQ __ 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] RF Speech Processors
> I am hoping there is no advantage so I can rid my desk of one more little > black box. The one thing that I can see on it that would be nice is the > ability to shift the passband. In the case of the K3, the Tx EQ can be used to tailor the ultimate sound, and the MON fuinction lets you hear your processed IF signal so you can hear the effect of the Tx EQ settings at various levels of clipping. As always, it is best to record the results and then play back the recording for critical evaluation so you aren't mixing your biologic speech monitor with the radio's :-) 73, Lyle KK7P __ 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] RF Speech Processors
On Tue, 12 Jan 2010 17:05:05 -0800, K6LE wrote: >I am hoping there is no advantage I haven't tried it, nor have I seen anything from anyone who has. BUT -- the speech processing in the K3 is VERY good and VERY flexible, so it's hard to imagine anything you could add outboard that could improve on it short of some really expensive pro audio gear. All of which is why we've not heard much about folks trying RF speech processing. :) 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] RF Speech Processors
On Tue, 2010-01-12 at 17:05 -0800, K6LE wrote: > I almost hate to bring this up since my flame suit is out at the > cleaners but before I sell my Ten-Tec 715 RF Speech Processor that is > left over from my previous radio I am wondering if anyone has done a > comparison between it and the built in RF processor on the K3? I've never used one and can't answer your question, however I have been wondering if it would be useful for the K2. So in addition to K3 comparisons for Rick, I'm also interested in K2 comparisons. 73, Brian P.S. Rick, if it seems that the K2 would benefit, I might be interested in your 715! :-) __ 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] RF Speech Processors
I almost hate to bring this up since my flame suit is out at the cleaners but before I sell my Ten-Tec 715 RF Speech Processor that is left over from my previous radio I am wondering if anyone has done a comparison between it and the built in RF processor on the K3? I have mine wired up for the Ten-Tec mic and connector cable so I can't easily compare. However, I can make up a patch cord to go to the rear panel and use my TT 709A mic for a test if someone cares to meet for a comparison. I am hoping there is no advantage so I can rid my desk of one more little black box. The one thing that I can see on it that would be nice is the ability to shift the passband. Rick K6LE #3727 __ 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: Heil HC-4
Ruben, MIC.SEL is FP.L (front panel), rP.L (rear panel) and LINE IN. This is for selecting where you plugged the microphone in. The HC-4 DOES NOT use Bias. 73, Tom N2CU <>< K3 #3582 __ 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] W1 Wattmeter SWR Bridge
I have need to place a remote 120 watt rf power measuring device out at the antenna site some 450 feet from the shack. I have RS-232 wireless connectivity at the remote location and would like to use the W1 to provide the measurement. Does anyone have experience using the W1 with the GUI software provided by Elecraft? Any ifo would greatly appreciate input from those who are using or have used this device. Thanks 73, John, W1QS __ 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 CW sidetone oddity
Don, No RF feedback -- 20 meters is my most perfect antenna (40 meters is my worst). However, I plugged the headphones in again and this time the tone was clear and normal. I unplugged the headphones and again now the tone is clear and normal. Is there a possibility that such behavior of impure sidetone could result if the "switch" in the the headphones jack did not open or close (I don't know which way is normal). But, it seems to be normal now. I have no idea what the problem was. phil On Jan 12, 2010, at 3:41 PM, Don Wilhelm wrote: > Phil, > > There is no normal and reasonable explanation for that, the sidetone > generation is not band dependent. > Is there a possibility that you have an RF Feedback problem on 20 meters - > that is the only thing I can think of. > > 73, > Don W3FPR > > Phil Hystad wrote: >> I am a new owner of a K3 and still learning... >> >> Today, for some strange reason my sidetone in CW on the 20 meter band seems >> to be producing two notes and not a single pure note. That is, it sounds >> more like the button tones of a push button phone then a pure sinewave tone. >> >> This is only 20 meters. All the other bands seem to be "normal". But, >> being a new K3 owner I am not sure what normal might be or if this is some >> option that I have some how slipped into. >> >> I don't know if I did anything to do this. I had a perfectly fine CW QSO on >> 14054 KHz two hours ago but then I was away for a little bit. When I came >> back, since my grandson was sleeping upstairs I decided to put the >> headphones on. I sent a QRL on the frequency to test business and >> low-and-behold, the CW sidetone was weird. I unplugged the headphones and >> the same condition existed on the speaker (built-in to the K3). >> >> Can someone explain this? >> >> phil, K7PEH >> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 CW sidetone oddity
Phil, There is no normal and reasonable explanation for that, the sidetone generation is not band dependent. Is there a possibility that you have an RF Feedback problem on 20 meters - that is the only thing I can think of. 73, Don W3FPR Phil Hystad wrote: > I am a new owner of a K3 and still learning... > > Today, for some strange reason my sidetone in CW on the 20 meter band seems > to be producing two notes and not a single pure note. That is, it sounds > more like the button tones of a push button phone then a pure sinewave tone. > > This is only 20 meters. All the other bands seem to be "normal". But, being > a new K3 owner I am not sure what normal might be or if this is some option > that I have some how slipped into. > > I don't know if I did anything to do this. I had a perfectly fine CW QSO on > 14054 KHz two hours ago but then I was away for a little bit. When I came > back, since my grandson was sleeping upstairs I decided to put the headphones > on. I sent a QRL on the frequency to test business and low-and-behold, the > CW sidetone was weird. I unplugged the headphones and the same condition > existed on the speaker (built-in to the K3). > > Can someone explain this? > > phil, K7PEH > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 CW sidetone oddity
I am a new owner of a K3 and still learning... Today, for some strange reason my sidetone in CW on the 20 meter band seems to be producing two notes and not a single pure note. That is, it sounds more like the button tones of a push button phone then a pure sinewave tone. This is only 20 meters. All the other bands seem to be "normal". But, being a new K3 owner I am not sure what normal might be or if this is some option that I have some how slipped into. I don't know if I did anything to do this. I had a perfectly fine CW QSO on 14054 KHz two hours ago but then I was away for a little bit. When I came back, since my grandson was sleeping upstairs I decided to put the headphones on. I sent a QRL on the frequency to test business and low-and-behold, the CW sidetone was weird. I unplugged the headphones and the same condition existed on the speaker (built-in to the K3). Can someone explain this? phil, K7PEH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K3] Noise reduction & Notch
I've noticed that I am unable to operate the NR & NTCH independantly on the main & sub receiver. If I turn either control on, it's on for both receivers. Can't turn it on for one receiver and have it off for the other like you can for the Preamp & the NB. I installed the 2nd DSP for the Sub receiver. Why doesn't it have it's own NR & Notch? Stan Rife W5EWA __ 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: Heil HC-4
Hello: I want use a FC-4 headset with the k3. What settings are you using? MIC.SEL Menu? Do i have to select H or L? and Bias? I think it is H and Bias Off. Is ok? Thank`s a lot. -- Rubén Navarro Huedo - EA5BZ http://www.palotes.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] XV daisy chaining with non-Elecrafts
Bo, The XV transverters can be daisy-chained for the key line and the IF coax cables - see the diagram on page 12 of the Owner's manual. I would think it would be easier to select the proper transverter by merely pressing the power on/off switch of the one you want rather than trying to reverse engineer the AuxBus code to select one transceiver - But than I am not familiar with your skills nor your available tools to decipher the AuxBus signaling required. Of course, one alternative is to use an Elecraft K2 or K3 for the IF transceiver. Either will integrate nicely (and seamlessly) with your set of transverters - the K2 would need the KIO2 option, and the K60XV option makes transverter use easier. The K3 needs only the KXV3 or KXV3A option to run the transverters, everything else is in the basic K3/10 73, Don W3FPR Bo, OZ2M wrote: > Hi > > Has anyone done daisy chaining of the Elecraft transverters without using an > Elecraft radio? > > I acknowledge that the AuxBus is used and intelligent communication is > needed from an additional microcontroller. > > Initially I thought, without taking a closer look at the diagram, that it > was possible to select the relevant transverter via the bus by supplying a > simple voltage corresponding to the DIP setting in the transverter. But from > what I can under stand from Elecraft intelligent communication is necessary. > Also taking an even closer look I can see that the AuxBus goes to a digital > port in the XV-microcontroller. > > If no super mod invented already I see the following alternatives: > 1) write own firmware for the XVs, and review two port pins > 2) make an intelligent controller > 3) make an IF switching and supply voltage control box > 4) abandon the Elecraft transverters > > I have three transverters and was looking forward to the daisy chaining > principle - actually this is why I embarked on the Elecraft way and already > prepared the non-Elecraft transverter for daisy chaining. > > 1) Can be done and with additional features missing today. > > 2) The intelligent controller may even be a business opportunity as a stand > alone box. Furthermore I have a station controller already in which I have > to rewrite the firmware so adding AuxBus communication should be a > manageable task provided I can emulate the AuxBus protocol. > > What to do? > > __ 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] IF output
It's working. I tuned around and got some really loud signals even without the preamp on. So I can move forward now trying to get the LP-Pan working. Thanks everyone, Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of sr...@swbell.net Sent: Tuesday, January 12, 2010 4:34 PM To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] IF output I was expecting to hear a carrier, but after I thought about it that can't be the case. With the IF connected to the Subreceiver I can tune around either side of 8215 and hear QSO's. I have to have the Preamp on by I can hear them. Would that be considered adequate? I have done the IF mod and used a 15K resistor in place of the original. I actually had a 10K & a 15K and Gary Surrency said either one of them would work. So error on the side of caution I used the 15K. Stan Rife W5EWA -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Tuesday, January 12, 2010 4:27 PM To: sr...@swbell.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] IF output Stan, I should think you can - although you will have to be careful to listen to the correct audio channel - it would be wierd to hear the real K3 received signal in one ear and the sub receiving the IF output signal in the other. 73, Don W3FPR sr...@swbell.net wrote: > Don, can I use the SUB receiver in the K3 to do that? I have the KBPF3 in the sub receiver. > > > Stan Rife > W5EWA > > No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 01:35:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 01:35:00 __ 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] IF output
You can also try borrowing an Icom Pro series (or presumably their larger radios as well), and hook the if out to the antenna input on the Pro, which will then act as a bandscope for the K3 when tuned to 8215 kHz.. I do this at P49Y (an idea from W0YK) and it works very well. 73, andy, ae6y - Original Message - From: "Alan Bloom" To: Cc: Sent: Tuesday, January 12, 2010 1:55 PM Subject: Re: [Elecraft] [K3] IF output > You should hear whatever signals the K3 is tuned to. I'm assuming you > are connected to the IF OUT jack of the KXV3 or KXV3A. > > If you haven't done the IF output mod: > http://www.elecraft.com/K3/mods/IF_Output_Buffer_Gain_Mod_Rev_A.pdf > then the signal level will be lower than at the K3 antenna connector. > But with the K3 preamp on, the difference is small. If you can clearly > hear something on the K3, then you should be able to hear it on the K2. > > Alan N1AL > > > On Tue, 2010-01-12 at 15:05 -0600, sr...@swbell.net wrote: >> I am trying to verify the output at the IF OUT jack on the back of >> the K3. I have it connected to my K2 with the VFO set for 8215.00 and I >> see >> or hear no signal at all. Shouldn't I see the output from the K3? Is the >> signal that low that I won't even get a blip on the K2 receiver? Am I >> missing something? I see no menu entry for enabling the IF output. HELP >> >> >> Stan Rife >> W5EWA > > > __ > 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] XV144 LO frequency
Bo, You certainly are welcome to try pulling the crystal frequency with a small parallel or series capacitor, but the stability may suffer - I have not tried it, this is a theoretical guess. Remember the crystal in all except the XV50 are overtone crystals - the XV50 uses a fundamental mode crystal and can be pulled using normal VXO oscillator techniques. 73, Don W3FPR Bo, OZ2M wrote: > Hi all > > During the Christmas holidays I finally decided to assemble my XV144, and > XV432 too. Much to my surprise the XV144 design does not come with an LO > adjustment possibility. This is relevant for me as I do not use it with an > Elecraft or other "display trick" capable radio. > > Has anyone already done a XV144 LO real frequency tuning mod? > > > __ 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] IF output
I was expecting to hear a carrier, but after I thought about it that can't be the case. With the IF connected to the Subreceiver I can tune around either side of 8215 and hear QSO's. I have to have the Preamp on by I can hear them. Would that be considered adequate? I have done the IF mod and used a 15K resistor in place of the original. I actually had a 10K & a 15K and Gary Surrency said either one of them would work. So error on the side of caution I used the 15K. Stan Rife W5EWA -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Tuesday, January 12, 2010 4:27 PM To: sr...@swbell.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] IF output Stan, I should think you can - although you will have to be careful to listen to the correct audio channel - it would be wierd to hear the real K3 received signal in one ear and the sub receiving the IF output signal in the other. 73, Don W3FPR sr...@swbell.net wrote: > Don, can I use the SUB receiver in the K3 to do that? I have the KBPF3 in the sub receiver. > > > Stan Rife > W5EWA > > No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 01:35:00 __ 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] XV daisy chaining with non-Elecrafts
Hi Has anyone done daisy chaining of the Elecraft transverters without using an Elecraft radio? I acknowledge that the AuxBus is used and intelligent communication is needed from an additional microcontroller. Initially I thought, without taking a closer look at the diagram, that it was possible to select the relevant transverter via the bus by supplying a simple voltage corresponding to the DIP setting in the transverter. But from what I can under stand from Elecraft intelligent communication is necessary. Also taking an even closer look I can see that the AuxBus goes to a digital port in the XV-microcontroller. If no super mod invented already I see the following alternatives: 1) write own firmware for the XVs, and review two port pins 2) make an intelligent controller 3) make an IF switching and supply voltage control box 4) abandon the Elecraft transverters I have three transverters and was looking forward to the daisy chaining principle - actually this is why I embarked on the Elecraft way and already prepared the non-Elecraft transverter for daisy chaining. 1) Can be done and with additional features missing today. 2) The intelligent controller may even be a business opportunity as a stand alone box. Furthermore I have a station controller already in which I have to rewrite the firmware so adding AuxBus communication should be a manageable task provided I can emulate the AuxBus protocol. What to do? 73 Bo, OZ2M - Looking for DX? Try VUSHF DX-peditions www.rudius.net/dxp __ 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] IF output
Stan, I should think you can - although you will have to be careful to listen to the correct audio channel - it would be wierd to hear the real K3 received signal in one ear and the sub receiving the IF output signal in the other. 73, Don W3FPR sr...@swbell.net wrote: > Don, can I use the SUB receiver in the K3 to do that? I have the KBPF3 in the > sub receiver. > > > Stan Rife > W5EWA > > __ 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] IF output
Burl, Some will do that, but most will not - it all depends on the exact value of the capacitors in the VFO Range Select circuit - a few pF one way or another makes a big difference. BTW, that is what setting the L30 adjustment to get the voltage at the left end of R30 is all about. Yes, the weak reception is likely due to the bandpass filters. 73, Don W3FPR bo...@mchsi.com wrote: > My K2 will tune to 8125 and I can hear the IF signal of the K3. It is weak, > but audible. I have the IF mod installed in my K3 > > AJ9Q, Burl > > __ 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] IF output
I wonder if I could do the same with my HP 3403C True RMS meter? Stan Rife W5EWA -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Sverre Holm (LA3ZA) Sent: Tuesday, January 12, 2010 4:18 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] IF output If you have an oscilloscope you can connect it and see the output. I have a K3 which has the modified IF with higher output. I have a 5 MHz (-3 dB) oscilloscope in my shack for monitoring. Even at 8.215 MHz it indicates up to +/- 50 mV in the 40 m band (no ATT, no PRE). In other bands it is lower, like about +/- 5mV (no ATT, no PRE) in the 80 m band. Due to the bandwidth limitation of my oscilloscope, I guess these values should be doubled or so to find the true values. srife wrote: > > I am trying to verify the output at the IF OUT jack on the back of the > K3. > - Sverre, LA3ZA K2 #2198, K3 #3391 http://www.qslnet.de/member/la3za/K2/mod.html LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://n2.nabble.com/IF-output-tp4294395p4294893.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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 01:35:00 __ 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] IF output
Don, can I use the SUB receiver in the K3 to do that? I have the KBPF3 in the sub receiver. Stan Rife W5EWA - Original Message - From: Don Wilhelm To: sr...@swbell.net Cc: elecraft@mailman.qth.net Sent: Tue, 12 Jan 2010 16:06:55 -0600 (CST) Subject: Re: [Elecraft] [K3] IF output Stan, The K2 cannot receive that frequency - the dial may say so, but the VFO/PLL has maxed out at about 7400 kHz (if you are tuning from 40 meters) and although the dial continues to increment, the actual frequency will not go any higher. Even if it did, the bandpass filters would probably attenuate the signal significantly. For the same reasons I doubt that you can tune downward from 30 meters and get that low. You will have to use a general coverage receiver. 73, Don W3FPR sr...@swbell.net wrote: > I am trying to verify the output at the IF OUT jack on the back of > the K3. I have it connected to my K2 with the VFO set for 8215.00 and I see > or hear no signal at all. Shouldn't I see the output from the K3? Is the > signal that low that I won't even get a blip on the K2 receiver? Am I > missing something? I see no menu entry for enabling the IF output. HELP > > > Stan Rife > W5EWA > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 01:35:00 __ 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] IF output
If you have an oscilloscope you can connect it and see the output. I have a K3 which has the modified IF with higher output. I have a 5 MHz (-3 dB) oscilloscope in my shack for monitoring. Even at 8.215 MHz it indicates up to +/- 50 mV in the 40 m band (no ATT, no PRE). In other bands it is lower, like about +/- 5mV (no ATT, no PRE) in the 80 m band. Due to the bandwidth limitation of my oscilloscope, I guess these values should be doubled or so to find the true values. srife wrote: > > I am trying to verify the output at the IF OUT jack on the back of the > K3. > - Sverre, LA3ZA K2 #2198, K3 #3391 http://www.qslnet.de/member/la3za/K2/mod.html LA3ZA Unofficial Guide to K2 modifications -- View this message in context: http://n2.nabble.com/IF-output-tp4294395p4294893.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] XV144 LO frequency
Hi all During the Christmas holidays I finally decided to assemble my XV144, and XV432 too. Much to my surprise the XV144 design does not come with an LO adjustment possibility. This is relevant for me as I do not use it with an Elecraft or other "display trick" capable radio. Has anyone already done a XV144 LO real frequency tuning mod? 73 Bo, OZ2M - Looking for DX? Try VUSHF DX-peditions www.rudius.net/dxp __ 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] IF output
My K2 will tune to 8125 and I can hear the IF signal of the K3. It is weak, but audible. I have the IF mod installed in my K3 AJ9Q, Burl - Original Message - From: Don Wilhelm To: sr...@swbell.net Cc: elecraft@mailman.qth.net Sent: Tue, 12 Jan 2010 16:06:55 -0600 (CST) Subject: Re: [Elecraft] [K3] IF output Stan, The K2 cannot receive that frequency - the dial may say so, but the VFO/PLL has maxed out at about 7400 kHz (if you are tuning from 40 meters) and although the dial continues to increment, the actual frequency will not go any higher. Even if it did, the bandpass filters would probably attenuate the signal significantly. For the same reasons I doubt that you can tune downward from 30 meters and get that low. You will have to use a general coverage receiver. 73, Don W3FPR sr...@swbell.net wrote: > I am trying to verify the output at the IF OUT jack on the back of > the K3. I have it connected to my K2 with the VFO set for 8215.00 and I see > or hear no signal at all. Shouldn't I see the output from the K3? Is the > signal that low that I won't even get a blip on the K2 receiver? Am I > missing something? I see no menu entry for enabling the IF output. HELP > > > Stan Rife > W5EWA > > __ 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] IF output
I thought about that and I guess that must be the case. Stan Rife W5EWA -Original Message- From: Joe Planisky [mailto:jp...@jeffnet.org] Sent: Tuesday, January 12, 2010 3:57 PM To: sr...@swbell.net Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] IF output I don't think you'll hear much of anything on a K2 at 8.215 MHz. That's well outside the 40m passband. The K2 does not have general coverage RX. 73 -- Joe KB8AP On Jan 12, 2010, at 1:05 PM, wrote: > I am trying to verify the output at the IF OUT jack on the back of > the K3. I have it connected to my K2 with the VFO set for 8215.00 > and I see > or hear no signal at all. Shouldn't I see the output from the K3? Is > the > signal that low that I won't even get a blip on the K2 receiver? Am I > missing something? I see no menu entry for enabling the IF output. > HELP > > > Stan Rife > W5EWA > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.725 / Virus Database: 270.14.136/2616 - Release Date: 01/12/10 01:35:00 __ 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] IF output
Stan, The K2 cannot receive that frequency - the dial may say so, but the VFO/PLL has maxed out at about 7400 kHz (if you are tuning from 40 meters) and although the dial continues to increment, the actual frequency will not go any higher. Even if it did, the bandpass filters would probably attenuate the signal significantly. For the same reasons I doubt that you can tune downward from 30 meters and get that low. You will have to use a general coverage receiver. 73, Don W3FPR sr...@swbell.net wrote: > I am trying to verify the output at the IF OUT jack on the back of > the K3. I have it connected to my K2 with the VFO set for 8215.00 and I see > or hear no signal at all. Shouldn't I see the output from the K3? Is the > signal that low that I won't even get a blip on the K2 receiver? Am I > missing something? I see no menu entry for enabling the IF output. HELP > > > Stan Rife > W5EWA > > __ 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] IF output
I don't think you'll hear much of anything on a K2 at 8.215 MHz. That's well outside the 40m passband. The K2 does not have general coverage RX. 73 -- Joe KB8AP On Jan 12, 2010, at 1:05 PM, wrote: > I am trying to verify the output at the IF OUT jack on the back of > the K3. I have it connected to my K2 with the VFO set for 8215.00 > and I see > or hear no signal at all. Shouldn't I see the output from the K3? Is > the > signal that low that I won't even get a blip on the K2 receiver? Am I > missing something? I see no menu entry for enabling the IF output. > HELP > > > Stan Rife > W5EWA > > > > __ > 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] IF output
You should hear whatever signals the K3 is tuned to. I'm assuming you are connected to the IF OUT jack of the KXV3 or KXV3A. If you haven't done the IF output mod: http://www.elecraft.com/K3/mods/IF_Output_Buffer_Gain_Mod_Rev_A.pdf then the signal level will be lower than at the K3 antenna connector. But with the K3 preamp on, the difference is small. If you can clearly hear something on the K3, then you should be able to hear it on the K2. Alan N1AL On Tue, 2010-01-12 at 15:05 -0600, sr...@swbell.net wrote: > I am trying to verify the output at the IF OUT jack on the back of > the K3. I have it connected to my K2 with the VFO set for 8215.00 and I see > or hear no signal at all. Shouldn't I see the output from the K3? Is the > signal that low that I won't even get a blip on the K2 receiver? Am I > missing something? I see no menu entry for enabling the IF output. HELP > > > Stan Rife > W5EWA __ 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 kit or factory assembled
A resource for those who are undecided as to whether to build their K3 or have it factory assembled would be a viewing of N5NA's 7 minute YouTube video. http://www.youtube.com/watch?v=DfUMZcwtIyw It's a masterpiece of time lapse photography. And very enjoyable as well. 73, Mike K2MK -- View this message in context: http://n2.nabble.com/K3-kit-or-factory-assembled-tp4294583p4294583.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] [K3] IF output
I am trying to verify the output at the IF OUT jack on the back of the K3. I have it connected to my K2 with the VFO set for 8215.00 and I see or hear no signal at all. Shouldn't I see the output from the K3? Is the signal that low that I won't even get a blip on the K2 receiver? Am I missing something? I see no menu entry for enabling the IF output. HELP Stan Rife W5EWA __ 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] Inrad 1.5 khz SSB filters
Back in stock, Ordered mine today http://www.inrad.net/product.php?productid=299&cat=140&page=1 WZ0O wrote: > > Good news from Inrad. They are cooking up another batch of the 1,5khz SSB > filters. So those that were looking it won't be long. They said they would > email me when there ready and I will post to let everyone know. (sometimes > you just have to ask nice :) ) > 73 > Brad > WZ0O > -- View this message in context: http://n2.nabble.com/Inrad-1-5-khz-SSB-filters-tp4266530p4293897.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
Re: [Elecraft] Yamaha CM500
My Yamaha CM500 came with a 3.5mm stereo plugs for microphone and headphone audio, which plug right into a computer sound card or the back panel connectors of my K3. Yamaha also provided a 1/4 screw-on adapter that slips over the 3.5mm stereo plug. There was also a small bias battery case for a single AA cell that can be put in-line to provide bias if required. I didn't need to use it. I plug the microphone right into the back of my K3. If you prefer a front-panel Foster microphone connection, you'll want something like the Heil Sound AD-1K adapter. Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dave, W8OV Sent: Tuesday, January 12, 2010 10:02 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Yamaha CM500 Good news! Do these come with a connector that will work with the K3, or do they have to be rewired, etc.? Dave, W8OV On 1/12/2010 10:32 AM, Hector Padron wrote: > Well it look like B&H is receiving this week all the backup orders,I just called and was informed my order from November will be shiped today. > > AD4C __ 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] Yamaha CM500
Never mind. I looked them up. W8OV On 1/12/2010 12:01 PM, Dave, W8OV wrote: > Good news! Do these come with a connector that will work with the K3, > or do they have to be rewired, etc.? > > Dave, W8OV > __ 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] Yamaha CM500
Good news! Do these come with a connector that will work with the K3, or do they have to be rewired, etc.? Dave, W8OV On 1/12/2010 10:32 AM, Hector Padron wrote: > Well it look like B&H is receiving this week all the backup orders,I just > called and was informed my order from November will be shiped today. > > AD4C __ 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] reflector
robby robertson wrote: > > Does anyone know a good way to read the digests from this reflector. I do > not want to receive 50 emails a day to get 2 or 3 that are of interest to > me. The K3 digest is getting ignored here because of all the repeat > information I have to wade through. > > There must be a better way. > > There is. Disable the emails completely and use Nabble: http://n2.nabble.com/Elecraft-f365791.topics.html . - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/reflector-tp4292698p4293273.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] How to Eliminate Power Supply Birdies?
On Mon, 11 Jan 2010 20:05:10 -0700, Bill VanAlstyne W5WVO wrote: >The RFI is almost certainly common-mode and is being radiated by the AC >power cord -- and, by extension, the house AC wiring. Yes, this is most common. >Your typical >store-bought "AC line filter" is a differential-mode device and will do >nothing to abate common-mode currents. What you need is a common-mode choke >on the AC input cord, installed as close to the power supply case as >possible. You make a common-mode choke by obtaining a fairly large ferrite >toroid and wrapping it with the AC line cord. Yes. >(Then use an extension cord to >reach the wall outlet.) Palomar Engineers and a couple of other vendors sell >these, and they have info on their websites that will help you choose the >best ferrite mixture for the frequency bands you're most concerned with. On my website, you will find MEASURED data for common mode chokes of 1-14 turns wound on 2.4-in toroids of Fair-Rite #31, #43, #61, #77, and #78 material. The common mode choke shown in Fig 30 is ideal for 160, 80, and 40M, and still pretty effective on 30M. The capacitor shown in the photo forms a differential filter with the leakage inductance of the choke, and is "icing on the cake." http://audiosystemsgroup.com/RFI-Ham.pdf The only part of Bill's advice that I disagree with is to purchase from vendors like Palomar or Amidon, who have been ripping off the ham community for decades with VERY high markups on ferrite parts (typically 4x-5x their cost). They get away with this by inventing new part number (for example, FT- 11, FT-240) for parts they buy from Fair-Rite, who is the actual manufacturer. Fair-Rite has many industrial distributors who sell for a lot less. Further, the so-called technical data I've seen on their websites is laughable -- lots of numbers, but none of them relevant. The above-referenced tutorial includes buying advice in Appendix One. In addition to common mode radiation from external wiring (the AC cord, the DC cables), it's also possible that wiring internal to the power supply is creating magnetic fields strong enough to be picked up by our antennas. Remember, we're listening for very weak signals, so even low levels of radiated trash bother us. That field is produced by current flowing in a loop, and magnetic fields are NOT well shielded by simply throwing some metal around them -- the shield must come very close to totally surrounding the field to be effective, and it needs to be thick enough (in terms of skin depth) to attenuate the field. This is a MAGNETIC field we're talking about, not an ELECTRIC field. Henry Ott's new book has an excellent discussion of RFI from switching power supplies, and how to avoid it. http://www.hottconsultants.com/ 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K-2 FS
Hector, AD4C Check ur yahoo email Phil K8MBY __ 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] Yamaha CM500
Well it look like B&H is receiving this week all the backup orders,I just called and was informed my order from November will be shiped today. AD4C "For a refined ham it is compulsory to own a 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
Re: [Elecraft] K3 HI-TEMP ALARM
We're looking into this. 73, Wayne N6KR On Jan 11, 2010, at 7:20 PM, je1...@a1club.net wrote: > Hi folks! > Thank you for suggestions. > > In my previous post, I forgot to say that my K3 works without hi-temp > alarm after warming up (about 30min or so without transmit just > receiving > status). > > So, it's just the same with Jaako's case. > My shack temp was around 15C these days. > > hmmm... > > Atsu, JE1TRV > >> Hi >> >> I have same problem, when shack temperature is below 17 degrees >> Celcius >> >> When PA Temp is higher than 25 degrees C then power is OK. >> >> Jaakko OH1MA / K3 ser. 2952 >> >> >> Hi Elecrafters! >> >> I have problem on my K3/100 (S/N3050, factory assembled). >> When I transmit more than 12W(means hi power amp on) >> within about 30min after mains power on, HI-TEMP alarm >> occur and equipment is forced to set 5W. >> >> No problem at all when hi-power amp is through ( Po<12W ). >> >> Any idea? >> Thanks in advance >> 73, Atsu JE1TRV >> >> > > __ > 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] Want to buy a K3
Hi Bill, One reason for the 1.8 kHz roofing filter is the male voice. If you set Fc to around 1 kHz and reduce the BW to 1.8 kHz, you get just enough voice components in speech to leave it intelligible, but will also eliminate almost every trace of signals to the sides. This is excellent for crowded bands and big adjacent signals. I've never used anything like it before on any other radio. It's like Elecraft decided on 1.8 kHz just for contesters, or for a better sunspot count than we have today. One example from an afternoon a few weekends ago I was calling CQ on 20m on SSB and there was a guy off to the side by a couple kHz. When I tuned him in I found his sig was running S9+25 or so. Big signal and lotsa of overdriven audio, but he wasn't splattering. Well, I liked the freq I was on and just set the 1.8 BW mentioned above and continued CQing. I got a call a few minutes after starting and and QSO ensued. After less than ten minutes, the loudmouth came on our freq and asked us to move. And I'd actually forgotten that he was next door. I politely explained that his QSO wasn't bothering us, and that should be proof enough that there was no problem with QRM. However, we did move down another 2.5 kHz anyway just for etiquette and to get a little laugh out of it. Both our stations were using K3's barefoot at 50W or so, and we compared notes on the loudmouth for a little while, then went our separate ways. It's like the rest of the band just went *poof*, and you have your own island for QSOing. Be cautious though, because not everyone has this advantage and you may actually interfere with a station you can't hear at all any more. Situational awareness is still part of our responsiblities... Some of the loudmouths think that their $10k big-name radios entitle them to some special privileges, which I believe we can either A) safely ignore or B) have a secret chuckle over. 73, matt W6NIA K3 #24 On Tue, 12 Jan 2010 09:03:30 -0700, you wrote: >You bring up the interesting question of configuration for the narrow >filter -- i.e., where do you set it to "kick in"? I opted for 1.9 kHz, you >opted for 2.1 kHz. I'm curious as to where others have configured the 1.8 >kHz SSB filter to kick in -- and why. > >Bill W5WVO > >-- >From: "Philippe Trottet" >Sent: Monday, January 11, 2010 10:05 PM >To: >Subject: Re: [Elecraft] [K3] Want to buy a K3 > >> Fully confirm this assessment ! >> The 1.8Khz 8 pole in a congested environment is a must. I have it in >> addition of the 2.8Khz. >> Considering the H polar of my 40m antenna receiving signals from the close >> East, most are regular Ham's from ex-USSR area and also very active >> pirates on that side, up to 59 +30 is common. >> Sometime ago two of those big guns were respectively on 7.085 and 7.090 >> with certainly old amplifiers spreading their signal several KHz away from >> the normal spectrum with saturated audio, I've just clicked on the 1.8Khz >> filter and as Bill says, FC to 1.05~1.10 and was able to listen clearly >> and do the contact with JA8BOF on 7.088. >> Just a trick, to program with the Elecraft utility the1.8Khz filter, >> starting from 2.1Khz. >> When listening with the 2.8 moving the width down will activate >> automatically at 2.1Khz the 1.8 filter, it is helpful. >> 73's >> Philippe A65BI >> http://www.qrz.com/callsign/A65BI >> K3#3616 >> " By Ham's, For Ham's...What else ! " >> >> ( http://www.qrz.com/callsign/A65BI ) >> > "Bill VanAlstyne W5WVO" 12-01-2010 6:53 >>> >> One thing the other posters have not mentioned (probably not being SSB >> types) is a narrow filter for SSB. I have the 1.8 kHz 8-pole filter, and >> it >> is amazing. You do have to reduce the hi-cut a bit to center the voice in >> the narrower passband (an FC of 1.05 is about ideal for most male voices). >> What you get is remarkable immunity from overload by extremely strong, >> close-in signals (providing of course that they aren't actually >> splattering, >> which you really can't do anything about). For SSB contest work, this >> filter >> is a must. If you don't work SSB much and/or aren't at all interested in >> SSB >> contesting/DXing, then you can probably skip it. But for me it's been a >> terrific addition. >> >> Bill W5WVO >> >> -- >> From: "John W2XS" >> Sent: Monday, January 11, 2010 2:28 PM >> To: >> Subject: Re: [Elecraft] [K3] Want to buy a K3 >> >>> >>> You will get many opinions on this. Here's mine. I am primarily a CW >>> operator but I like to listen to AM BCB and Shortwave stations. My >>> antenna >>> is a multi-band Cobra Ultralite fed with ladder line and a Balun Designs >>> 4:1 >>> Tuner Balun. >>> >>> 1. KAT3 Tuner. If you have matched, coax-fed antennas, then you may not >>> need this. But it is a great addition to those of us with multi-band >>> antennas. It remembers the settings on small segments of each band
[Elecraft] reflector
Does anyone know a good way to read the digests from this reflector. I do not want to receive 50 emails a day to get 2 or 3 that are of interest to me. The K3 digest is getting ignored here because of all the repeat information I have to wade through. There must be a better way. -Robby VY2SS __ 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] Want to buy a K3
You bring up the interesting question of configuration for the narrow filter -- i.e., where do you set it to "kick in"? I opted for 1.9 kHz, you opted for 2.1 kHz. I'm curious as to where others have configured the 1.8 kHz SSB filter to kick in -- and why. Bill W5WVO -- From: "Philippe Trottet" Sent: Monday, January 11, 2010 10:05 PM To: Subject: Re: [Elecraft] [K3] Want to buy a K3 > Fully confirm this assessment ! > The 1.8Khz 8 pole in a congested environment is a must. I have it in > addition of the 2.8Khz. > Considering the H polar of my 40m antenna receiving signals from the close > East, most are regular Ham's from ex-USSR area and also very active > pirates on that side, up to 59 +30 is common. > Sometime ago two of those big guns were respectively on 7.085 and 7.090 > with certainly old amplifiers spreading their signal several KHz away from > the normal spectrum with saturated audio, I've just clicked on the 1.8Khz > filter and as Bill says, FC to 1.05~1.10 and was able to listen clearly > and do the contact with JA8BOF on 7.088. > Just a trick, to program with the Elecraft utility the1.8Khz filter, > starting from 2.1Khz. > When listening with the 2.8 moving the width down will activate > automatically at 2.1Khz the 1.8 filter, it is helpful. > 73's > Philippe A65BI > http://www.qrz.com/callsign/A65BI > K3#3616 > " By Ham's, For Ham's...What else ! " > > ( http://www.qrz.com/callsign/A65BI ) > "Bill VanAlstyne W5WVO" 12-01-2010 6:53 >>> > One thing the other posters have not mentioned (probably not being SSB > types) is a narrow filter for SSB. I have the 1.8 kHz 8-pole filter, and > it > is amazing. You do have to reduce the hi-cut a bit to center the voice in > the narrower passband (an FC of 1.05 is about ideal for most male voices). > What you get is remarkable immunity from overload by extremely strong, > close-in signals (providing of course that they aren't actually > splattering, > which you really can't do anything about). For SSB contest work, this > filter > is a must. If you don't work SSB much and/or aren't at all interested in > SSB > contesting/DXing, then you can probably skip it. But for me it's been a > terrific addition. > > Bill W5WVO > > -- > From: "John W2XS" > Sent: Monday, January 11, 2010 2:28 PM > To: > Subject: Re: [Elecraft] [K3] Want to buy a K3 > >> >> You will get many opinions on this. Here's mine. I am primarily a CW >> operator but I like to listen to AM BCB and Shortwave stations. My >> antenna >> is a multi-band Cobra Ultralite fed with ladder line and a Balun Designs >> 4:1 >> Tuner Balun. >> >> 1. KAT3 Tuner. If you have matched, coax-fed antennas, then you may not >> need this. But it is a great addition to those of us with multi-band >> antennas. It remembers the settings on small segments of each band which >> is >> incredibly convenient for QSYing, especially on 160m. >> >> 2. KBPF3 General Coverage Filter. If you stick only to the ham bands, >> then >> you may not need this. But it was on my "must-have" list (as was the >> KAT3). >> I have all 100 memories filled with short-wave and AM BCB stations all >> over >> the frequency spectrum. I've been listening to Radio China and Radio >> Cairo >> a >> lot lately. >> >> 3. KPA3 100W Amplifier. Many people start out with the 10W option. I >> have >> had a lot of success with the K2 at 10W. But I wanted the K3 to be my >> "QRO" >> rig as it replaced a Kenwood TS-930S (which is a fine but aging rig). >> >> 4. KRX3 Sub receiver. I added this after a year and find it is >> incredible >> for working split-frequency DX stations. I cannot see ever going back to >> the "push the TF Set" button days to try and figure out where the heck >> the >> DX station is listening. If you are not a DXer, or don't care about >> diversity reception, etc, then you may not need this. >> >> 5. Filters. This was (and is) a hot topic. But I stand by my initial >> decision, which was: >> >> A. 200 and 500 Hz 5-pole filters. There was an early posting that said >> that >> only the first 30 dB of slope is critical, and that a 5-pole filter would >> be >> more than enough. I went with that, and am happy. There probably is some >> (small and subtle?) difference between the 5-pole and 8-pole performance, >> but the main purpose of a roofing filter is to prevent the DSP (the main >> selectivity in the rig) from overloading. Signals are generally weak >> right >> now, but will start to get stronger as conditions improve. It is >> amazing, >> though, to crank that knob down to 500 and then to 200 and know that >> there >> is no chance for any out-of-bandpass signal to get through. >> >> B. 2.7 kHz SSB filter. This comes standard. This is the only filter >> that >> I >> have in the sub receiver right now. I based that decision on wanting to >> hear >> a wide bandpass most of the time to hear the
Re: [Elecraft] K3 HI-TEMP ALARM
In my experience with this, the five watt calibration of the K3 was incorrect. The gain required to set the fifty watt cal was then incorrect. This can cause various problems, including burning out the low power amp, and not getting 100 watts out when 50 is calibrated. Note that a Bird wattmeter with a 250 watt slug is NOT sufficiently accurate at 5 watt levels. On Mon, Jan 11, 2010 at 10:20 PM, wrote: > Hi folks! > Thank you for suggestions. > > In my previous post, I forgot to say that my K3 works without hi-temp > alarm after warming up (about 30min or so without transmit just receiving > status). > > So, it's just the same with Jaako's case. > My shack temp was around 15C these days. > > hmmm... > > Atsu, JE1TRV > >> Hi >> >> I have same problem, when shack temperature is below 17 degrees Celcius >> >> When PA Temp is higher than 25 degrees C then power is OK. >> >> Jaakko OH1MA / K3 ser. 2952 >> >> >> Hi Elecrafters! >> >> I have problem on my K3/100 (S/N3050, factory assembled). >> When I transmit more than 12W(means hi power amp on) >> within about 30min after mains power on, HI-TEMP alarm >> occur and equipment is forced to set 5W. >> >> No problem at all when hi-power amp is through ( Po<12W ). >> >> Any idea? >> Thanks in advance >> 73, Atsu JE1TRV >> >> > > __ > 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] Yamaha CM500 headset at B&H for <$40
I received notice this morning, Jan. 12, that B&H shipped mine which I ordered around Dec. 5 or so. /Rick N6XI On 1/10/10, Bob Naumann wrote: > > For some additional info, I placed an order with B&H for these headsets on > December 4 and they are still on backorder. > > Don't hold your breath waiting the 12 to 14 days they say it should take. > > Bob W5OV > > > -- Rick Tavan N6XI Truckee, CA __ 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: RF Gain, Squelch
Dave, The 6 kHz filter is mandatory for AM and/or ESSB *transmit*. For AM receive only, the 6 kHz IF bandpass reduces to a maximum AF frequency of 3 kHz after de-modulation of both sidebands. The 13 kHz "FM" filter can certainly be used for AM receive, and the K3 audio response can go as high as 4 kHz (that is the limit set in the DSP). If you encounter AM stations that are strong and are on adjacent frequencies, then the 13 kHz filter may be too wide. So how to obtain a full audio bandwidth with AM and the 6 kHz filter? - that has now been answered with the inclusion of Sync AM reception - that only uses one of the sidebands, the SHIFT knob changes from USB to LSB, so one can enjoy the full audio bandwidth that the K3 offers using that mode. Your 6 kHz filter is NOT a 'waste' after all. 73, Don W3FPR David Y. wrote: > Don and All, > > Your last post raises a question in my mind--it probably has been > discussed before, and if so, I missed it. I must admit that the > number of posts on this reflector is often overwhelming, and I'm sure > I get too quick with the delete key. > > Here's the question--I bought the 6 khz filter, but not the 13 khz > filter. I don't do AM, and probably won't do much, if any FM, but I > suppose the possibility is there for a very small amount of FM on 10 > meters perhaps. Anyway, I bought the 6 khz filter, primarily to > accomodate any SW listening I might do. So, would I have been better > off to buy the 13 khz filter instead of the 6 khz filter? That sounds > like what you did. I assume I could just use the 13 khz filter for AM > listening, and use the DSP to narrow things appropriately. I wouldn't > have a 6 khz roofing filter, but would I really be at much of a > disadvantage for the type of use I describe above? For some reason, I > thought the 6 khz filter was mandatory for AM, but maybe I misread > that (or misinterpreted what I think I read!). > > By the way, your discussion of how to set the RF gain makes a great > deal of sense to me. It is, in fact, what I have been doing > intuitively. My RF gain is almost always set at something like 12 > o'clock or so--maybe a tad bit higher. My "excursion range" with the > RF gain rarely goes beyond the 2 o'clock position, even on very weak > signals. Beyond that all I seem to be doing is increasing the noise > level with little or no improvement in the desired signal. I rarely > use the preamp, and find that it more often than not degrades what I > am trying to hear. > > Dave W7AQK > > > - Original Message - From: "Don Wilhelm" > To: > Cc: "Elecraft Discussion List" > Sent: Monday, January 11, 2010 10:10 PM > Subject: Re: [Elecraft] K3: RF Gain, Squelch > > >> Al, >> >> To look at it another way - look at the S-meter to observe the band >> noise level, and then back off the RF gain until the S-meter is steady >> at that same S-meter reading. Of course, this should be done at a spot >> in the band where no signals are present. >> >> That is a quick way to determine the optimum setting for the RF Gain >> consistent with the greatest receiver dynamic range and one does not >> have to listen to the constant band noise clutter. >> >> The other option is to just run with "all knobs full right" and put up >> with listening to the band noise when there are gaps in the signal >> level. >> >> Be aware that the AGC Threshold will also have a great effect on the >> amount of band noise heard in the audio. If the Threshold is set too >> low, the receiver will go into AGC action on only the band noise. I use >> an AGC Threshold setting of 008 just for that reason (I know the default >> is 005, but I think that is too low). >> >> 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] K3: RF Gain, Squelch
Don and All, Your last post raises a question in my mind--it probably has been discussed before, and if so, I missed it. I must admit that the number of posts on this reflector is often overwhelming, and I'm sure I get too quick with the delete key. Here's the question--I bought the 6 khz filter, but not the 13 khz filter. I don't do AM, and probably won't do much, if any FM, but I suppose the possibility is there for a very small amount of FM on 10 meters perhaps. Anyway, I bought the 6 khz filter, primarily to accomodate any SW listening I might do. So, would I have been better off to buy the 13 khz filter instead of the 6 khz filter? That sounds like what you did. I assume I could just use the 13 khz filter for AM listening, and use the DSP to narrow things appropriately. I wouldn't have a 6 khz roofing filter, but would I really be at much of a disadvantage for the type of use I describe above? For some reason, I thought the 6 khz filter was mandatory for AM, but maybe I misread that (or misinterpreted what I think I read!). By the way, your discussion of how to set the RF gain makes a great deal of sense to me. It is, in fact, what I have been doing intuitively. My RF gain is almost always set at something like 12 o'clock or so--maybe a tad bit higher. My "excursion range" with the RF gain rarely goes beyond the 2 o'clock position, even on very weak signals. Beyond that all I seem to be doing is increasing the noise level with little or no improvement in the desired signal. I rarely use the preamp, and find that it more often than not degrades what I am trying to hear. Dave W7AQK - Original Message - From: "Don Wilhelm" To: Cc: "Elecraft Discussion List" Sent: Monday, January 11, 2010 10:10 PM Subject: Re: [Elecraft] K3: RF Gain, Squelch > Al, > > To look at it another way - look at the S-meter to observe the band > noise level, and then back off the RF gain until the S-meter is steady > at that same S-meter reading. Of course, this should be done at a spot > in the band where no signals are present. > > That is a quick way to determine the optimum setting for the RF Gain > consistent with the greatest receiver dynamic range and one does not > have to listen to the constant band noise clutter. > > The other option is to just run with "all knobs full right" and put up > with listening to the band noise when there are gaps in the signal level. > > Be aware that the AGC Threshold will also have a great effect on the > amount of band noise heard in the audio. If the Threshold is set too > low, the receiver will go into AGC action on only the band noise. I use > an AGC Threshold setting of 008 just for that reason (I know the default > is 005, but I think that is too low). > > 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] Panadapter Setup for K2 - Where can I read-up on this? Goos source for advice?
check here for softrocks. http://www.kb9yig.com/ they are still in high demand so you may have to check daily to see when more are added. Matt W8ESE On Tue, Jan 12, 2010 at 9:12 AM, Don Wilhelm wrote: > Dean, > > The plan for the P3 as I have heard it is to also support the K2 IF, and > I cannot recall if the LP-PAN is available with an IF input to match the > K2 IF. You would need a buffer amplifier added to your K2 to bring the > IF signal out. There is a version of Jack Smith's Z1 buffer > amplifier kit just for that purpose. Check > http://www.cliftonlaboratories.com/z1_buffer_amp.htm for more > information. > You will also find on that same page that you can use a Softrock > receiver to produce the panoramic display on a computer display rather > than a P3 or LP-PAN if that less expensive alternative appeals to you. > (I don't know how many SoftRock 6.2 boards Tony Parks has available, but > you can ask). > > 73, > Don W3FPR > > Dean wrote: >> I am looking for a source for good advice to set up a panadaper, software >> etc for the K2. Best to get/build, how to set it up etc. >> >> Thanks in advance for your help! >> >> Dean >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 9.0.725 / Virus Database: 270.14.134/2613 - Release Date: 01/11/10 >> 02:35:00 >> >> > __ > 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] Panadapter Setup for K2 - Where can I read-up on this? Goos source for advice?
Dean, The plan for the P3 as I have heard it is to also support the K2 IF, and I cannot recall if the LP-PAN is available with an IF input to match the K2 IF. You would need a buffer amplifier added to your K2 to bring the IF signal out. There is a version of Jack Smith's Z1 buffer amplifier kit just for that purpose. Check http://www.cliftonlaboratories.com/z1_buffer_amp.htm for more information. You will also find on that same page that you can use a Softrock receiver to produce the panoramic display on a computer display rather than a P3 or LP-PAN if that less expensive alternative appeals to you. (I don't know how many SoftRock 6.2 boards Tony Parks has available, but you can ask). 73, Don W3FPR Dean wrote: > I am looking for a source for good advice to set up a panadaper, software etc > for the K2. Best to get/build, how to set it up etc. > > Thanks in advance for your help! > > Dean > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.725 / Virus Database: 270.14.134/2613 - Release Date: 01/11/10 > 02:35:00 > > __ 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 K3DSPUPG note
Just to further clarify, after lowering LO CUT to zero, the bottom two EQ bands have activated! Even so, it is indeed interesting that little energy exists at those low frequencies - even in an AM broadcast signal. This kind of EQ is a very powerful tool. I wish I had the free time to fully explore its impact on the various modes. One tip I learned from a pro audio / musician friend many years ago is that more often reducing the EQ level of some bands is more effective than increasing others so don't presume that you always need to boost to improve what you hear. 73, Bob W5OV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Sarte Sent: Monday, January 11, 2010 2:39 PM To: 'Lyle Johnson' Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 K3DSPUPG note I got it. Tnx for the clarification! 73 de James K2QI -Original Message- From: Lyle Johnson [mailto:k...@wavecable.com] Sent: Monday, January 11, 2010 3:34 PM To: James Sarte Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 K3DSPUPG note > Can you guys expound on this a bit more?... RxEQ 1 and 2 work. One has to set LO CUT to 0.00, as before. 73, Lyle KK7P __ 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] Yamaha CM500 headset at B&H for <$40
Hello, B&H is shipping right now the CM500. I did my order December 11th, today I received an email telling me that was shipped. 73, Jorge CX6VM -Mensaje original- De: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] En nombre de w...@w5ov.com Enviado el: Lunes, 11 de Enero de 2010 02:47 p.m. Para: Elecraft List Asunto: Re: [Elecraft] Yamaha CM500 headset at B&H for <$40 note: B&H is reputable and they will ship once they receive the stock. I have dealt with them for years in photo equipment and this is not uncommon for them to offer a low price and take a while to deliver on it. 73, Bob W5OV > I am very glad I decided to pay a little extra and ordered mine through > Amazon in mid-December. Had it by Christmas! > > > Rick > K6LE > > > On 1/11/2010, at 5:50 , Hector Padron wrote: > >> I consider my order a lost,I made in November last year and I have sent >> emails and always had same answes back: "still on backorder" >> >> AD4C >> >> > > __ > 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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.432 / Virus Database: 270.14.129/2605 - Release Date: 01/11/10 19:35:00 __ 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] Panadapter Setup for K2 - Where can I read-up on this? Goos source for advice?
I am looking for a source for good advice to set up a panadaper, software etc for the K2. Best to get/build, how to set it up etc. Thanks in advance for your help! Dean __ 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] OT. what power for K3 in portable use?
Manolo, Choose the largest 12 to 14 volt battery that you are willing to carry along - if the sun is shining, you may want to extend the operating time by adding a solar panel to the battery to keep the charge level up. The K3 draws about 900 ma. on receive, and the current will be more when transmitting - the transmit current depends on the power level you have set. You can calculate your operating time on any battery by referring to the Amp/Hour rating of the battery - you will likely be able to use it for about 1/3 of the AH rating - when the battery drops to about 11 volts, you should stop using it until re-charged. Keep the power setting low to extend your operating time. Have fun! 73, Don W3FPR Manuel Pareja wrote: > Hi elecrafters, > > I would like to have some advise about powering the k3 while I am portable. > can not be very heavy because what I realy like is to go out to the mountain > with a small backpack. > > 73 de Manolo EA7LL > > __ 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] Question about cheap and dirty signal tracing
Kevin, It is normal to see a higher response touching a random, wire to C6 compared to touching the same wire to W6. The C6 location is a high impedance point while the W6 and D6 locations are low impedance - the capacitive dividers (C7,8 and C4,5) reduce the impedance. The end of a random wire is a high impedance and matches better at C6. If you were connecting the center conductor and ground the shield of a properly matched feedline close to the test point, you would likely find a better response at W6 than at C6. That is why that testing technique is called "Cheap and Dirty" - it does have some eccentricities that the user needs to be aware of (like this one), but overall is a quick troubleshooting aid. If you are getting about the same response at D6 and W6, then the bandpass filter is probably OK. 73, Don W3FPR Kevin Cozens wrote: > Greetings. > > I have barely used my K2 going on about two years now. It seemed to work > well when I first got it off the person who had assembled it. I got > occasional comments about good audio when operating on SSB. I then > started applying the mods to bring it in line with the post 3000 serial > number units, applied the PLL stability mode, and replaced the crystals > with a more closely matching set, and completely re-aligned the radio. > > Since then, the radio seems to have become slightly deaf, and I also > have some issues with transmit audio. I've considered selling it to > someone who could fix it and starting over. Having acquired a good > digital storage oscilloscope some months back, I'm going to have another > shot at trying to fix the problems. I'll start by working on the receive > issues. > > I'm planning to get one of the Elecraft signal generator kits to help > with tracking down the receiver issues. Since I don't currently have > one, I'm starting with the cheap and dirty signal tracing notes from > Tom, N0SS. I pulled out the KSB2 and disconnected the KAT2 to eliminate > them as a source of problem. I have noticed one odd thing when using a > random length of wire and touching one end of it to the indicated test > points. > > Touching the wire to either side of C6 (RF Board page 3), the S meter > reading on the front panel goes up by about 2 LED's. What is odd is that > if I touch W6, or either end of D6 (the previous and next points in the > signal chain) I don't see this level of increase in signal level. > > This isn't making sense to me right now. I would think I would get the > same signal level increase at either W6, or D6, but not at neither point > compared to both sides of C6. Could this indicate bad, or wrong value > caps, for C5 and/or C7? Any other thoughts about this rather odd > behaviour? Seems to be pointing towards something to investigate further > but I hope I don't have to removed that bottom rear panel as its more of > a pain to remove. > > __ 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] OT. what power for K3 in portable use?
(why the OT label?) For backpacking use, you might want to look into the K3's little brothers, the KX1 and the K1. Mark AD5SS __ 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] OT. what power for K3 in portable use?
Hi elecrafters, I would like to have some advise about powering the k3 while I am portable. can not be very heavy because what I realy like is to go out to the mountain with a small backpack. 73 de Manolo EA7LL __ 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] Question about cheap and dirty signal tracing
Greetings. I have barely used my K2 going on about two years now. It seemed to work well when I first got it off the person who had assembled it. I got occasional comments about good audio when operating on SSB. I then started applying the mods to bring it in line with the post 3000 serial number units, applied the PLL stability mode, and replaced the crystals with a more closely matching set, and completely re-aligned the radio. Since then, the radio seems to have become slightly deaf, and I also have some issues with transmit audio. I've considered selling it to someone who could fix it and starting over. Having acquired a good digital storage oscilloscope some months back, I'm going to have another shot at trying to fix the problems. I'll start by working on the receive issues. I'm planning to get one of the Elecraft signal generator kits to help with tracking down the receiver issues. Since I don't currently have one, I'm starting with the cheap and dirty signal tracing notes from Tom, N0SS. I pulled out the KSB2 and disconnected the KAT2 to eliminate them as a source of problem. I have noticed one odd thing when using a random length of wire and touching one end of it to the indicated test points. Touching the wire to either side of C6 (RF Board page 3), the S meter reading on the front panel goes up by about 2 LED's. What is odd is that if I touch W6, or either end of D6 (the previous and next points in the signal chain) I don't see this level of increase in signal level. This isn't making sense to me right now. I would think I would get the same signal level increase at either W6, or D6, but not at neither point compared to both sides of C6. Could this indicate bad, or wrong value caps, for C5 and/or C7? Any other thoughts about this rather odd behaviour? Seems to be pointing towards something to investigate further but I hope I don't have to removed that bottom rear panel as its more of a pain to remove. __ 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
