[Elecraft] Unexpected Band / Mode switching
I have a fairly elderly K3, SN500s. I have noticed recently that occasionally when I hit the band up switch the mode changes but the band doesn't. Seems to be getting more frequent. Is this a common problem and is there a fix? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Unexpected-Band-Mode-switching-tp7621412.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Transverter offset
Sorry this is an old thread. Is there any particular reason why the frequency error offset is limited to +-9.99kHz? My 10GHz transverter has attained LO stability at 25kHz off its nominal figure and I can't correct for this. 10kHz sounds like at lot on 2m or even 23cms but on 10 GHz its barely 1ppm. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Transverter-offset-tp2288121p7617701.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 Message delivered to arch...@mail-archive.com
[Elecraft] KRC2 for the K3
Hi All Is there any prospect of the KRC2 being updated to fully support the K3? Ideally a new device with outputs covering all the HF bands, including the new ones and the 6 transverter bands? I need this for a remote setup. My old KRC2 has finally failed and no longer responds, but it never really interfaced well with the K3 as it only supported K2 capabilities. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KRC2-for-the-K3-tp7612464.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] 4-Meter (70 MHz) module possible for the KX3
A 4m module would be a very good reason for me to buy a KX3 - but it would be even better if it was available for the K3. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/4-Meter-70-MHz-module-possible-for-the-KX3-tp7588804p7588860.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Button of no return
I tend to agree Eric. I have not commented yet. We need to understand what happened with the original message in this thread and more importantly how to prevent it. Power cuts happen, for whatever reason and we can't have them bricking the radio, whatever it happens to be doing at the time. I am sure Elecraft have been working on it, probably late into the night. For the record, I like my K3, it has excellent design and is one of the best transceivers available to date. Much of this is due to firmware which has no doubt grown to be a very complex system, with all that entails. I like powerpoles, they work well and mine don't fall out. They easily handle 30A. Crimps are best avoided unless done professionally so I always solder them. They have revolutionised my station's configuration providing quick reliable foolproof 12V interconnects. Mike G0MJW -- View this message in context: http://elecraft.365791.n2.nabble.com/Button-of-no-return-tp7585411p7585490.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] Wanted XV144 transverter UK
First question is why as the XV144 its much larger than the radio - do you mean the internal module? I have two, one to go with my K2 and K3 for 2m and the other for my 23/13cms IF. I am looking for an XV432. If I find one I will no longer need my spare XV144 which currently drives my microwave transverters. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Wanted-XV144-transverter-UK-tp7582220p7582246.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] 43' Vertical - mine is 31ft
Nice location - handy for Elecraft too. there is a tree in the background that looks tempting as an antenna support. At the moment it looks like you have one of those QTHs with almost no man-made noise which coupled with an inefficient 80m antenna is frustrating when people you can hear perfectly well can't hear you. The remote auto-tuner at the base is in exactly the right place, but you will need to give it some help. Adding an extra coil at the base which you can bypass with relays will probably allow you to tune the vertical on 80m. Not ideal but it will be better than an 80m mobile whip and they work to some extent. The KPA500 will then help overcome the poor radiation efficiency. With 600W, you need to ensure the coil will handle the power, but that's not so hard to achieve. It does not need to be a coil, you could use a phasing line along the fence instead. Even if the K3 will tune it, there might be significant feeder losses and you are down on power without the linear. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/43-Vertical-mine-is-31ft-tp7578577p7578698.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Stealth High-End Radio
That's Spectre (SPecial Executive for Counter-intelligence, Terrorism, Revenge and Extortion) for you - no tolerance of incompetence. Anyone know what "The Lad Himself" is screwing an 19DS/87B into in The Radio Ham? There is a nice collection of amateur radio equipment in that episode. IMO, with the large dial and amber glowing display, the K3 looks a lot more like what most people would consider as a radio than the latest behemoths from the big three manufacturers. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Stealth-High-End-Radio-tp7578657p7578669.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] KRC2 /K3
Hello Hank I sympathize with these difficult issues - the KRC2 is out of date and its about time it was replaced but at least it has always been reliable. I have one and it has never suffered from RF getting into it. Sorry if the below is stating what is already obvious to you. This may be a symptom of an RF in the shack problem. The 1ft line should not be a problem and as long as it is screened additional filtering should not help. Using RS232 may cure the symptoms but not the cause and your own BCD interface likewise. If it is an RF getting into the system problem, how might that be happening? A good way to check if it really is RF in the shack is to ask yourself if you have issues with lots of noise on the bands from the shack computer. As antennas are reciprocal, if you have significant coupling of RF back you will also have coupling of noise in. Obviously with 1500W the antennas will have to be a long way away from the operating position (for safety if nothing else) so we can probably rule out this being due to direct radiation from the antenna. I assume you have remote antennas and the array solution switch somewhere remote with a long feeder back to the shack. Maybe at the base of a tower. Could RF be getting back on the control lines from the remote switch? Are the control lines screened? Are they running close to the feeder. Putting ferrite on the switch control lines may help. Ditto the feeder. Burying the feeder helps a lot but isn't always practical. One of the worst configurations for this problem is a feeder on a catenary because it will pick up like an antenna, especially if you have an effective RF choke at the antenna end. If you have that arrangement, ferrites are the answer - plus a good short connection to your RF ground where the cable enters the house. The other possibility is you are using several feeders via the switch with an ATU in the shack. That's a problem because you will potentially have a bad match on the feeder in use, almost certainly a bad match on the feeders not in use which will result in the pickup from all the feeders merging at the switch. So, if the remote switch is actually in the shack I would investigate if you can improve the grounding and maybe move it somewhere else - like right next to the ground stake. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KRC2-K3-tp7578647p7578668.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] Feature request - Disable Break In on K3
Hi Don, I guess I didn't explain well enough. What I meant is the K3 has lots of ways to go to TX/ many of which I want to use/ So yes, I do want to go to TX via the voice keyer, or via the internet, or via the key, memory keyer, tune button or even the microphone ptt switch. I just don't want it to QSK - that's it - only to disable QSK and only on bands above 50MHz. I have found a work around I listed earlier, its not ideal but its a lot better. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578429.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] Feature request - Disable Break In on K3
Hi Joe, That's an easy one - I did think about that but rejected the idea as the K3 can go into transmit without a PTT input, in several ways, including the extremely useful voice keyer but also by PC command, pressing the tune button, VOX etc. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578350.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] K1 - 4 Band For Sale
I also have a surplus 4 band K1, basic, no ATU. It is in the UK where I live. I would like a second K3 so if anyone is interested, contact me off list with an offer. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K1-4-Band-For-Sale-tp7576727p7578336.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] Feature request - Disable Break In on K3
Thanks everyone for the most useful suggestions. I have now determined that the semi break in delay only works when VOX is activated, so if you are using PTT, which I was, and you press the memory button, there is no delay and the PTT output rattles up and down. With VOX activated the hang time is asserted. Fortunately, VOX is mode sensitive, i.e. CW and SSB are set individually so one can live with this. I don't understand why you need VOX for Semi break in to work, but that's how it is. The TX suppression is a good thing to have, but in my case it is handled in the transverters. The TX power is only 1mW and it goes straight into the mixer. At that power level it hardly matters if the input pin diodes or relays are hot switching. What does matter is the settling of the output TX/RX relays and this is OK because I switch the PA bias with a 100mS delay so they don't see power until they have had time to settle. A rapidly changing PTT out status is a problem for my system because, a lot is going on in the TX/RX changeover. There are bias supplies and drain supplies to switch and a rapid on/off could defeat my relatively simple sequencing logic. This takes about 100mS and if the PTT drops part way through and then rises again just after, it could result in hot switching. There is a useful K3 option to delay TX by up to 60mS to allow for amplifiers to switch. I am using this as well, just in case. In the unlikely event anyone is interested, I use one of WW2R/G4FREs band selection boards to provide a 12V signal for 4m/2m/70cm/23cm/13cm/9cm/6cm/3cm band. It monitors the K3 RS232 line. It also provides band by band PTT but I don't use that facility, I gate a single PTT line via the 12V per band. In the shack I have two of W1GHZs miniverters, one for 2m and one for 70cm which provide the interface to the microwave transverters. These share a VHF Apollo local oscillator which develops 116 MHz or 404 MHz as required. Some simple diode/relay logic selects which IF, LO and microwave transverter is activated depending on the microwave band. It is designed for 23/13/9/6/3cm but currently only 23/13/9cm are on the mast. My microwave transverters are located 20m away, at the base of my lightweight Tenamast to cut down on cable losses. The 12V per band and PTT signals are decoded with relay/diode logic. I have 1:6 relays at the top and bottom so I only need one TX and one RX feeder up the mast. This saves much weight and each feeder is only 10m long. As the pre-amps and band select are all in a box at the top, I can use a lightweight LMR400 for the RX line. The TX line is LDF4-50, LDF5-50 would have lower loss but it is not flexible enough. Apart from raising the mast, this is all completely automated, (potentially controllable via the internet if only I had a decent broadband connection) and it does not interfere with HF/VHF operation. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578335.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] Feature request - Disable Break In on K3
"Are you saying that with VOX off, and no external source of PTT, your K3 is going into transmit when you operate your key? i.e. you see the red TX LED light? " Yes to the first, no to the second. To explain - in CW mode the K3 sends a PTT signal on the keying line whenever the key is down. It does not matter if it is a straight key or the memory, the PTT output is still active in sync with the sidetone. The radio does not transmit but that's hardly an issue in my case as its only putting out 1mW at ~28MHz. The problem is the PTT signal when moving rapidly causes a lot of relay chattering and bias supply switching, I have not tried it with my 24GHz which uses a rotating waveguide switch, but I am sure it wouldn't be good for it. In VOX mode with QSK I could understand this hapening, but when VOX is off, you wouldn't expect the key to activate the PTT signal. A way around that is to have a VOX hang, but that appears only to work on SSB. -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578315.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] Feature request - Disable Break In on K3
Hi Don, That doesn't work too well because the PTT signal still bounces up and down setting off all the relays. My IC735 used to have a VOX delay which you could set to something long to prevent that - but unless I missed a menu I can't seem to find where you set the CW VOX hang time. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578313.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] Feature request - Disable Break In on K3
I wasn't aware of that feature - but all I can get is FULL or SEMI, no "Off". Turning off VOX to PTT still causes VOX to operate with the key - which is surely a bug? -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303p7578312.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] Feature request - Disable Break In on K3
Please can we have an option to disable break in. I nearly killed my microwave transverter tonight because of break in when I pressed the memory key button by mistake. CW QSK is too fast for and defeats the sequencing of the transverter. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-Disable-Break-In-on-K3-tp7578303.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 and whats next from Elecraft - my 2 cents
How about a serious VHF/UHF radio ? -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-whats-next-from-Elecraft-tp7577832p7578284.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] Harris Channel 11 VHF TV Amplifier Modules - IMMEDIATE ATTENTION REQUIRED
I have two of these sub modules. They will convert to 144MHz with a little effort and some small expenditure on 25 ohm coax. They make great amplifiers, I have one modified and run it up to 400W output on 144MHz, but you will need to keep spares as the PA devices are custom. Of course they would work unmodified on the 220MHz band and maybe that's the best option. The trays of 4 modules make 1500W. A note of caution, I paid about $200 each for mine and at the time it was a very good deal. I was intending to combine them to make an 800W amplifier, but then the MRFE6VP61K25H design appeared in Dubus. With that design you have nearly 1kW linear output from one device for not a lot more money than I had paid for two modules and without any of the fuss of combining them or the potential lack of spares should a device fail. Jim, W6PQL makes kits for the MRFE6VP61K25H and I suppose its about $600 to get you to the same point you would be with two Harris modules. So, although $600 is a lot more than $400. all of the casing, filtering, protection, TX/RX switching and so on still needs to be done for either amplifier. Once you build it you realise the power module is only half of the job and you need to budget another $500 to finish the job, the saving from surplus modules doesn't look so attractive. Where it is attractive is if you need much more power than the 900W you can get from the MRFE6VP61K25H, say for EME running a high duty cycle mode like JT65. Then 8 modules will give you a "conservative" 1500W at the feed. It makes more sense for one or two people to get together and take all in one go. Always a pity to see nice RF hardware scrapped. Mike G0MJW/AD6XY -- View this message in context: http://elecraft.365791.n2.nabble.com/Harris-Channel-11-VHF-TV-Amplifier-Modules-IMMEDIATE-ATTENTION-REQUIRED-tp7577787p7577789.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] Just a thought
I thought the thing about Porsche 911s was that in the wet you have to go round roundabouts twice. (I suspect this joke won't traverse the Atlantic well, but never mind) I don't have a problem with Non-US radios in W1AW but I agree it would be nice to see an Elecraft radio there as well. Japan have dominated the market for some time because they have produced the best radios for the price. The investment has been enormous, supported by a large local market. Elecraft have only dented this dominance. We have to remember that even if the radio is designed and built nationally, many of the components will have been designed in Europe or Japan but manufactured in China or elsewhere. These days there is probably no such thing as an entirely American radio, or a Japanese one, or a British one. Mike G0MJW/AD6XY -- View this message in context: http://elecraft.365791.n2.nabble.com/Just-a-thought-tp7577761p7577785.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 TX Power
Yes - back in the early days of the K3 it did the opposite, it would transmit more power than requested which was a nightmare for those of us using linear amplifiers. Some new ALC software was developed which had this effect, but it was not as marked as you are experiencing. There might be a biasing problem which could cause this sort of slow build effect, but from what you say happens when you adjust the power control it looks like it is directly related to the power setting algorithm. The first thing to do is repeat the calibration. That may well fix it. If not, JT65 might be confusing the ALC algorithm, it may expect a waveform with some modulation to operate but JT65 has a constant amplitude. If you key CW does it do the same? I.e. initial Key down, sits at low power, sending dots goes to high power? What is it like on SSB? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-TX-Power-tp750p757.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] Antenna and battery for KX1
Or if you don't want to or can't easily alter the antenna, lengthen it electrically by adding a small inductance (10nH) in series at the feedpoint. Say 12 turns on 3" diameter former (plastic bottle, whatever). If you lengthen the wire to 86ft you will have a 5/8th wavelength that you should be able to match. Adding a small inductance has the same effect as lengthening the wire if you can't adjust the actual antenna, or want to be able to remove it easily. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Antenna-and-battery-for-KX1-tp7577712p756.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] To K3 or not to K3?
Bearing in mind the cost of a K3, it might be a good idea to buy a cheap modern second hand Icom / Kenwood / Yaesu first and see how you get on with them. Meanwhile saving up for a K3. Then if the cheap rig does not suit and you decide to get the K3 you will truly appreciate the improvement. Elecraft may have a K4 out by then, or another company may have developed an even better SDR, you never know. If you want to go direct to the K3 with an amplifier, I would go for the K3 10 and not buy the ATU. Modern PA devices have more than enough gain* to be fully driven by 10W and the ATU needs to be after the linear so the one built into the K3 is redundant. The cost saving is significant. If you later decide you don't want a linear after all, the 100W/ATU upgrade is easy to install later. *[There are apparently some archaic FCC rules about limiting amplifier gain to 15 dB still in force from the CB craze that fortunately don't apply in my part of the world (Europe) but if it is an issue, it is one that would be very easily solved by an Extra class licensee.] Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/To-K3-or-not-to-K3-tp7574560p7574655.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] Modern K2 internal battery options
Several people have used LiPos in the K2 - I looked into it but I decided it was too risky. There is a risk of fire/explosion but with suitable protection the really big risk letting the battery go flat and ruining it. I have a LiPO pack to power the K2, but it remains external and has a low voltage warning buzzer. Instead I bought a AA battery case, holding 8AAs as 2 rows of 4 with a PP3 type connector. You can get these everywhere. I installed it in place of the Gel Cell. It fits fine with a bit of padding. One or two slight circuit modifications later and with the case filled with cheap 2AH AA NiNH cells I had a new battery pack. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Modern-K2-internal-battery-options-tp7574550p7574654.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] K144XV Strange Readings
Its oscillating. Stop using it as you are transmitting outside the band - hence the high VSWR -- View this message in context: http://elecraft.365791.n2.nabble.com/K144XV-Strange-Readings-tp7573719p7573742.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] KXPA100 AMP and KXAT100 ATU pics and info
Looks very nice - Does it work with the K3/10? -- View this message in context: http://elecraft.365791.n2.nabble.com/KXPA100-AMP-and-KXAT100-ATU-pics-and-info-tp7573015p7573034.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3/KRC2/XV144/KPA500 Combo
It should work just fine. I have up to 3 transverters and KRC2 attached. I did notice some strange effects if I daisy chained several XVs where one was unpowered. So look out for that sort of thing if you have trouble. If you have trouble with wiring to the 15pin connector on the back of the K3 Winford Engineering have some useful breakout boards and cables. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-KRC2-XV144-KPA500-Combo-tp6627049p6641270.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] DX on 15 watts
The largest contributor to DX success has and always will be your ability to be there and efficiently radiate a signal in the right direction and to receive signals well. I have always found QRP based on TX power to be anachronistic. It is the EIRP that matters. Neglecting efficiency for the moment running 5W to a 10dB gain beam is exactly the same at the far end of the QSO as running 50W to an isotropic. So many hams are QRAntenna. QRP + QRAntenna is difficult. Usually though, the antenna difference is much greater due to losses, especially with covert low antennas. That is not all of it either. The older ham with the large real estate, the 60ft tower and the beam and a pension, is not only going to have a better signal but does not need to spend most of their waking hours at work. These hams are QRTime. So QRTime + QRAntenna + QRPower = really hard challenge. Eliminate any one of those and it is still an impressive achievement. Eliminate two and it is getting a bit easy. -- View this message in context: http://elecraft.365791.n2.nabble.com/DX-on-15-watts-tp6639611p6641077.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] Looking for miniature 14-V power supply for travel use
Hi Wayne, I expect you are back by now. However it might still be of interest. I have been using laptop type supplies for this application. Light, small, cheap and some of them are relatively quiet. They will also fit in a small metal box. Recently I came across LED lighting supplies, 12V again and similar to laptops except they come with standard 2.1mm plugs. For quiet and off grid applications, I use LiPo batteries, 3 or 4 cell. For the KX3, 3 cells will do and can be re-charged with a cheap balance charger. I have a small one to hand, 20x40x100mm 2.2Ah and a 4AH 4 cell 20x50x120mm. My own application is powering portable microwave gear, but 12V is universal. Fusing is essential of course as these cells will happily deliver 60Amps. They have a reputation for danger if you miss-charge them. But people still fill up their cars with gasolene to go on holiday and that is much more dangerous. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Looking-for-miniature-14-V-power-supply-for-travel-use-tp6547473p6592088.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] K3EXREF Shipping Date?
I picked mine up at Dayton. I am looking forward to testing it. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3EXREF-Shipping-Date-tp6407590p6417570.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] UK Elecraft Net
That is rather unfair Brendon. Most of the time, in fact all of the time when I called in, someone called over the top of me. I can't know in advance when someone who can't hear me is going to transmit. When you got two or 3 characters, that was when I stopped because with QSK I can tell in someone is transmitting on top of me. I stopped and gave up on being told "This is an SSB net". Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/UK-Elecraft-Net-tp5995889p6053834.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] UK Elecraft Net
Can't hear me on properly SSB obviously though you are 59 down here but noise is low. So, I call in in CW and you say "This is an SSB only Net" - go away! -- View this message in context: http://elecraft.365791.n2.nabble.com/UK-Elecraft-Net-tp5995889p6045326.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 with microwave transverter - Frequency display
The K3 displays the frequency for bands above 1 GHz by missing the most significant digit. I would rather it missed the least significant one. Then 1296 would read 1296 rather than 296. This is I feel justified on the grounds that, for non-GPS locked systems, by the time one is over 1GHz the last 100Hz or so of resolution it is a bit less certain. Secondly, I seem to be having trouble with direct frequency entry on 2320. The IF is 144MHz via an XV144 but if I try to enter 2320.200 I can't. I can enter 144.300 on 2m so I think this is a problem only over 1 GHz. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-with-microwave-transverter-Frequency-display-tp5952398p5952398.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] Feature request - CW PTT
Are you sure about this? Mine does work - it would be impossible to operate VHF without it. The PTT I use is on the front panel wired to a footswitch and it does work in CW mode. -- View this message in context: http://elecraft.365791.n2.nabble.com/Feature-request-CW-PTT-tp5871428p5871759.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] OT: modifying your amp for lower drive requirement
Luckily - most of the world is not the US and gains of over 15dB are legal and common in non-us amplifiers. Modern FETs have much more gain than older devices and it would be quite normal to have 20dB gain from a stage - even after some feedback. There is an interesting design in the latest Dubus for a 1kW 2m amplifier that requires only 5W input. That is tetrode territory. The popular THP 1.2KFX and 1.5KFX amplifiers use a 6dB input attenuator. Bypassing this allows you to drive them with less power under 25W, though it is not encouraged. The attenuator serves a couple of other purposes - it prevents serious over-drive with a 100W rig and it improves the input match. Incidentally - someone said with a 3dB pad the VSWR can't be more than 3:1 - that is only true if the PA does not have a negative impedance or to put it another way, return gain. That can happen when an amplifier takes off. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-modifying-your-amp-for-lower-drive-requirement-tp5854009p5865633.html Sent from the [QRO] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] KREF3 External Reference Option
Great news, I have been waiting for this option ever since my K3 arrived. The method implies the phase noise of the 10MHz reference is not so important - which is useful to know. My high spec reference is 5MHz and my cheap one 10MHz. The 10MHz will have worse phase noise than the TCXO in the K3 - though at the low frequencies it is not such an issue as it is at VHF and above. The 5MHz one is good - but it takes a long long time to lock. With the count method, it should not matter. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KREF3-External-Reference-card-tp5143036p5865613.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] UK Elecraft net Sunday 28th Nov 0900 hours
I am not sure - but clearly it is not easy to cover the country in one go. Perhaps we could have North and South Nets or maybe in the evening? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/UK-Elecraft-net-Sunday-28th-Nov-0900-hours-tp5778427p5782407.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] UK Elecraft net Sunday 28th Nov 0900 hours
The Northern UK Elecraft Net Dave I could not break in the time. You were 59 on a quiet band but the others were almost inaudible. Is it time to choose a different band/frequency/time perhaps? -- View this message in context: http://elecraft.365791.n2.nabble.com/UK-Elecraft-net-Sunday-28th-Nov-0900-hours-tp5778427p5781296.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] KX1 and K1 Battery Notes
Thanks for this. I must get a battery pack kit for my K1. It seems a pity to have to use a PSU or external battery with it. My K2 had the lead acid cell in it but I found that it was rather heavy. When I bought one of Roses' excellent cases for my K2 for a holiday to the US, I replaced the battery with 10AA cells of 2500mAhr. This is much lighter and it has worked very well.with 5W output. 10W is possible but it drains the cells too fast. I did intend to use a LiPo cell but balked at the danger of charging them inside the K2. I do use the LiPo cells, but keep them outside the K2 - in one of the side pockets of the case. These have amazing performance for their weight and cost. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-and-K1-Battery-Notes-tp5696566p5710427.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] [K2] KXV60 Transverter In and Out connectors - BNC v. RCA
Go for the RCAs so you can still remove the top easily. At 28MHz (practically DC - it is 10m wavelength for goodness-sake) you don't need to worry about the mismatch for this application. That is what I did - it looks neat and stops you from confusing them with the KAT2 BNCs. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-KXV60-Transverter-In-and-Out-connectors-BNC-v-RCA-tp5661559p5663316.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] KPA500 [END OF THREAD]
I only just found it! Now it is out, what is different between the KPA500 and the Tokyo High Power range of amplifiers? Auto tuner? That would be great. The KPA500 is just right for our 400W power limit incidentally - well done there. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-tp5516919p5643863.html Sent from the [QRO] 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] UK Elecraft Net (and ROI!)
Propagation was not really up to it this time - have we considered 40m? Maybe even call it the EU elecraft net. -- View this message in context: http://elecraft.365791.n2.nabble.com/UK-Elecraft-Net-and-ROI-tp5619319p5643851.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: DRM
Probably not because of the codec licensing issues and also because the DRM standard was not the US system, there is also - IBOC which is more common in the USA. There are two rival systems out there and that is never much good for adoption. The K3 is not intended to be a broadcast receiver. It happens to be a very good broadcast receiver but that is incidental. An interesting prospect would be to provide an IQ interface (both TX and RX) and leave the encoding and decoding to a PC or an add on unit. People could do whatever modulation they like with that. I don't know if that would be possible to implement on the K3. Perhaps that is the K4. To decode DRM I use the SDR-IQ and DREAM. It works like one. The audio quality is astonishing for the bandwidth. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-DRM-tp5596998p5600194.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] [K3][XV144][K144XV] Considering Sale of XV144 to replace with K144XV, need advice.
You could sell it to me But there are advantages in an external transverter. In my case I am thinking of putting it and my 70 MHz (XV70) transverter a long way away from the radio, to overcome long coax losses. Cable loss at 28MHz is not a problem for my 30m run as there is more than enough drive and gain. The only problem with this is the auxbus to select between the transverters and operate the PTTs will not go 30m. The K144XV has several faults. Itdoes not have a PTT output to drive a linear - a mistake that should have been easily avoided by consulting the community. The promised microwave compatible transverter output was not implemented either. I think if the K144XV had included a PTT output I would still have bought it just for convenience. If it had had the 144MHz transverter ports it would probably be an even bigger seller. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-XV144-K144XV-Considering-Sale-of-XV144-to-replace-with-K144XV-need-advice-tp5436851p5447315.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] KPA500 active devices!!
"The fcc requires amplifier gain to be 15 decibels maximum for any amatuer radio amplifier. " What a stupid regulation! On the one hand you are allowed 1500W and on the other only 15dB gain? It makes no sense. Presumably one of the CB regulations. A gain of 15 dB is reasonable for a single stage FET amplifier I agree. Does the FCC also forbid operating amplifiers in series? Mike -- View this message in context: http://n2.nabble.com/News-from-Visalia-tp4914396p4930822.html Sent from the [QRO] 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] 2010 Dayton Hamvention / FDIM Rooms
Yes - great fun. A very interesting event. Owing to unfavourable exchange rates I will not be there this year - so it is safe to attend. Mike -- View this message in context: http://n2.nabble.com/2010-Dayton-Hamvention-FDIM-Rooms-tp4778085p4779371.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] Programming language and tools used by Elecraft and other for PIC programming - OT
What I would find most useful is a code in a PIC that decodes K2 auxbus commands to set an output pin according to the selected band. A bit like a KRC2 but embedded. Then I could build my own transverters/amplifiers/switches. I realise auxbus is proprietary so the PIC would have to come ready programmed. Mike -- View this message in context: http://n2.nabble.com/Programming-language-and-tools-used-by-Elecraft-and-other-for-PIC-programming-OT-tp4530561p4644195.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] Programming language and tools used by Elecraft and other for PIC programming - OT
Assembly language! We had to write code in Hex. -- View this message in context: http://n2.nabble.com/Programming-language-and-tools-used-by-Elecraft-and-other-for-PIC-programming-OT-tp4530561p4644179.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] For Sale (or Trade): XV50 6 Metre Transverter
And note these can be converted for the 70MHz band which greatly increases their value in Europe. -- View this message in context: http://n2.nabble.com/For-Sale-or-Trade-XV50-6-Metre-Transverter-tp4640908p4644178.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: VHF/UHF transverters
Hi Lyle, A question set on the new transverter interface KXV3A and the K144. How many internal ports does the KXV3 have? If it is only one is the KV144 daisy chainable like the XV144. If yes when is the KV70/220/432/1296 coming out! There was discussion on low level outputs for driving gear for higher bands. I see these are not currently connected. Has that plan now been dropped/put on hold or is it being done by bypassing the PA and using the antenna socket? Finally. is it possible to get 8-12V on the 144MHz antenna port on TX like on the FT290? This is how many of us drive microwave transverter PTTs. It would allow me to use my K3 on 24GHz. Mike -- View this message in context: http://n2.nabble.com/K3-VHF-UHF-transverters-tp4564132p4565572.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] K2 help!! Fault pulling my hair out
If you have the ATU you did remember to re-connect the antenna didn't you? No mis-aligned connectors? Have you reset the CPU? If so it may require re-claibrating. Check the memory battery, re-do the synth cal. It is probably worth going back to the build manual and tracing the fault through the schematic. It is a Dodo by the way, not a do do. Mike -- View this message in context: http://n2.nabble.com/K2-help-Fault-pulling-my-hair-out-tp4449880p4449928.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] WTB: XV432 Transverter (receive-only OK)
I would quite like one too - no PA required as I want to use it purely to drive my 3.4GHz, 5.7GHz and 10GHz transverters via the K2. The 2.3GHz and 24GHz transverters use a 144MHz IF and I have an XV144 for this. Mike -- View this message in context: http://n2.nabble.com/WTB-XV432-Transverter-receive-only-OK-tp4433186p4440316.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] Pink K3 bag is a royal idea
Just because a while ago it was OK to use pink it does not mean it is now. Many years ago everyone drove on the left of the road. This is still fine and accepted in most of the world, but not good fashion in the America or continental Europe. Go around with a pink bag if you are male and people will make judgements. -- View this message in context: http://n2.nabble.com/Pink-K3-bag-is-a-royal-idea-tp4425361p4425497.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 parts delivery in UK
If it is going via parcel force, after customs it has to go to their warehouse. There it will sit for up to a week. Then they will send you a letter with the charges due. Once you have paid these, including another £8 or £13 plus VAT they will send it on to you within a week or so. The penalty of living in the 3rd world I am afraid. Mike -- View this message in context: http://n2.nabble.com/K3-parts-delivery-in-UK-tp4418698p4418823.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] K144XV Side Panel for K3
If you need it to match ask yourself how hard is it to drill 3 holes in a panel? -- View this message in context: http://n2.nabble.com/K144XV-Side-Panel-for-K3-tp4285919p4286208.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Elecraft[K-3] K144XV
I know this - so does everyone. I have actually read the manual. However, there is only one TX inhibit and it is shared with the K3 on signal, which I happen to be using. Even if I was not using it the inhibit might easily be set to the default K3 ON and be ignored. Perhaps one of the DIGOUT lines could be used, but it would be better to have a longer delay and a seperate 2m PTT output. Don Wilhelm-4 wrote: > > The K3 has a TX INHibit input on the ACC connector that will inhibit RF > for any length of time you desire. Drive it with an output from your > sequencer that indicates "sequence completed". See the manual for > details. > > 73, > Don W3FPR > > Jo > -- View this message in context: http://n2.nabble.com/Elecraft-K-3-K144XV-tp4267790p4273831.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] [K3] Elecraft[K-3] K144XV
I can not see any reference to noise figure in the brochure. Just MDS and FM sensitivity with no bandwidth. When I get mine I will measure the noise figure on a test set. It is likely to be under 2dB and I will use a low ENR head! I suspect like the XV144, the K144XV will need some gain reduction for use with a masthead pre-amp. Signals at the antenna of -30 dBm are not unknown around here resulting in milliwatts at the mixer but the time you add in 20 dB of preamp plus another 20dB of conversion gain. I am still worried about the diode switching, 2m specific PTT outputs and delays. I assume the usual 20mS delay option is there in the menu like all the other bands. This is not quite long enough when you are sequencing an amplifier and a pre-amp as there is more to switch than just the coaxial relays. When used as an IF for microwaves it will need even longer to allow a waveguide switch to operate but this will be mitigated by the split TX/RX outputs and the low power 2m interface. Where does this come out? Mike -- View this message in context: http://n2.nabble.com/Elecraft-K-3-K144XV-tp4267790p4271265.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] Elecraft[K-3] K144XV
I am intrigued. Why does the K144XV need any firmware apart from on/off like the XV-144? Can it do other things? I have been meaning to ask for a while, how will it control my 2m PA which is not the same as the HF PA, and will it allow a delay for the relays and pre-amp like the XV144 does? Is there volts up the coax for a pre-amp? Eric Swartz - WA6HHQ, Elecraft wrote: > > > > The K144XV specific utility hasn't been posted because there is no need > for it yet. We haven't released any firmware updates to the basic 144XV > uC itself. (Its much less complex than the maionK3 code and has been > very stable. ) > 73, Eric WA6HHQ > > > > -- View this message in context: http://n2.nabble.com/Elecraft-K-3-K144XV-tp4267790p4268835.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Disgruntled Europeans
Yes - we are lucky in speaking a similar language to the US. I have imported directly from Japan, but it is more difficult to pay. Currently the exchange rate is very poor, back in 2008 when I ordered my K3 there were over $2 to the pound. At Dayton that year there were a lot of Brits buying stuff. The "Dayton Specials" and the exchange rate combined made equipment approximately half as expensive compared to the UK. I bought loads, even with VAT it was a bargain. The exchange rate went down to $1.35 last Spring and consequently, US prices were only 10-20 percent lower than UK ones, so I bought nothing at Dayton last year. Now we are back up to $1.60 and prices are again favorable. But - this has little to do with Elecraft - who refreshingly have fixed prices for us, excellent support and can understand English. They even allowed me to pay 100% up front for my K3 6 months before it was ready to ship. I just wish we could set up some form of monthly bulk shipping arrangement to the UK because all the little items are uneconomically expensive due to shipping charges and the parcelforce extortion money. Julian, G4ILO wrote: > > > > Doug Turnbull wrote: >> >> Many EU hams look at prices in QST and CQ and just dream. It seems that >> one can >> purchase Japanese made radios in the States for the same price in dollars >> as >> one pays in Euros or Sterling. >> > It's really a dream. There are so many hidden costs that much of the > saving gets eaten up by the time the product gets here. I just did a quick > example of a Yaesu VX-8R, listed by Universal Radio at $379. Add on say > $50 for international shipping. That comes to GBP 268 (£1 = $1.60) You'll > be charged 17.5% VAT on arrival here plus a GBP 13 tax collection fee > bringing the total to GBP 328. Nevada Radio is selling the EU version > (VX-8E) for GBP 338. So ten quid gets you the EU version plus a locally > supported warranty. > > > >> I believe that being able to purchase the kit K3 directly is a great plus >> to >> Elecrafter sales in the EU. True one is a bit exposed as to service but >> if >> one has built the kit then individual boards can be returned for service. >> The K3 is small and not that heavy to ship back if needs be for that >> matter. >> > > I wonder if those who have actually had to ship a K3 back to the US from > Europe would agree? I know for a fact that whenever I write on my website > or blog about something I bought in the US I get emails from hams asking > where in the UK they can order. Many in our hobby are a pretty > conservative bunch and will not buy from outside the UK. I think Elecraft > could actually be losing sales by not selling through local dealers, not > least because there are some people with money burning a hole in their > pocket who go to Martin Lynch or W&S on a Saturday morning looking for a > new toy to take home and play with, and if there isn't a K3 there to try > out they'll buy something else instead. > > However I suspect if Elecraft did sell through UK dealers the extra cost > to us would be a lot more than in my Yaesu example because there is no > dealer mark-up in the price we pay from Elecraft, whereas the Japanese > manufacturers have local offices and dealers taking their cut on both > sides of the Atlantic. So carry on selling direct, please. :) > -- View this message in context: http://n2.nabble.com/Disgrunteled-Japanese-tp4250692p4259763.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] Bird Wattmeters
Bird Trulines were designed a long time ago. Yes they are good but not that good. Certainly not a calibration standard. With a pure signal they give good results within their specification. With this type of meter it is very important to make sure there are no harmonics in the signal as the element can give large errors if there are. Even harmonics that are many dB below the fundemental can have a significant effect on the readings. This feature is probably behind some of the inflated VHF amplifier power output claims in the past. In extreme cases it is possible to exceed 100% amplifier efficiency according to the meter. Mike kd1na wrote: > > Working in the electronic calibration field for some years I have found > that any mechanical meter movement has it's greatest accuracy at full > scale only. the meter movement's accuracy diminishes as you go down in > scale. So if a Bird Wattmeter is calibrated for 5% accuracy at full scale > then it's accuracy will be reduced as the meter deflection is reduced. > That is why for greatest accuracy with a Bird Wattmeter measuring 9 watts > (for example) should be using a 10 watt slug for greatest meter > deflection. > > Digital readouts will always have the accuracy of the measuring circuitry > + or - one count of the least segnifigent digit of the instrument or > computer readout no matter how much of the selected range scale is used. > Having said that you will have the most accuracy when approaching the > upper scale range ( example 90 watts on the 100 watt range and not 9 watts > on the 100 watt range). > > See Below: > > 73 and Happy New Year > Dave KD1NA > > Bird wattmeter's, the spec is 5% OF THE > FULL SCALE READING - and that is ONLY right after calibration. That > specification says that if a BIRD wattmeter has been recently calibrated > and handled carefully afterwards, with a 100 watt slug, it can have an > error of 5 watts - and that applies to *anywhere* on the scale. > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/Bird-Wattmeters-tp4246548p4246655.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] [K2] how much harder to build: K2 vs K1?
I see you have decided on the K1, that is a good choice. The Elecraft kits are a good choice as the manuals are so well written. You say you have no experience of building a kit, so before you build it, while awaiting delivery perhaps, I think you should practice on something that does not really matter. Any simple Velemann kit or something from Radioshack would be a good idea. Learn how to make mistakes on that and then learn how to fix them without damaging the PCB. Once you can make good joints and solder and desolder parts, and can use the tools properly you will be able to move on to the K1 with confidence. Mike lstavenhagen wrote: > > Hi all, > > I'm considering building a K2, but here's my situation. I'd be a > first-time kit builder, I've never had the opportunity to build and the K2 > looks like it'd be great fun and a great learning experience. The K1 > sounds like it's the better choice for a first-time build, but the K2 > matches what I need in a radio a lot better. > -- View this message in context: http://n2.nabble.com/how-much-harder-to-build-K2-vs-K1-tp4234815p4243613.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] UK Elecraft Net
OK - Why the new frequency? Mike Ian Maude wrote: > > Hi all, > The first UK Elecraft net of 2010 will be run tomorrow (Sunday) at 09:00 > on > 3768 +/- QRM. I would love to hear you there, especially if you have not > called in before or if you are thinking about buying an Elecraft radio or > just ordered one etc. There is a lot of Elecraft expertise on the net and > the subjects also cover aerials, tuners etc. It is a great net to be on > :) > > 73 Ian > > -- > Ian J Maude, G0VGS > SysOp GB7MBC & HB9DRV-9 DX Clusters > Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 > http://www.amateurradiotraining.org > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/UK-Elecraft-Net-tp4243011p4243579.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] Spring cleaning
Happy New Year Everyone! I am looking at my K3 in the sunshine and I have noticed some fingerprints on the front panel. Some or the ore often used buttons have dirt on them too. I wonder what people are using to clean the front panel? Soapy water will do I expect - anything better? I don't wish to damage the paintwork or leave water marks. Mike -- View this message in context: http://n2.nabble.com/Spring-cleaning-tp4239369p4239369.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] xv series
No but it certainly helps. You could use the main antenna socket but it is better to use the transverter ports on the KIO3. -- View this message in context: http://n2.nabble.com/xv-series-tp4228235p4228773.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3: Carry-on Pelican 1510
Julian, G4ILO wrote: > > > Following the recent bomb attempt it has been reported on the BBC today > that only one item of hand luggage is now being permitted on flights to > the USA. > I think we can forget flying to the USA for the time being. I am wondering about going by boat for a nice change. I have been worrying what might happen if someone tried to hide a bomb in their underwear, we already have to remove our shoes - but this is besides the point. I don't think it is a good idea to take a radio transmitter as hand luggage, in the past yes but not now with the insecurity checks. You could easily have fitted a bomb inside, you may use it to jam the aircraft communications or even use its' sharp bits as a weapon. Obviously you would not do this but someone might and that is enough. Radio transmitters need to go in the hold or not go at all. Having seen how bags were literally thrown from the hold on a recent Easyjet flight I was in the plane next to in Toulouse, I would never put my K3 in the hold. So that particular Pelican case is unable to protect the K3 in the hold and so it would be a waste of money. If you must take the K3, use a larger pelican case with plenty of bubble wrap. Remember it will probably be opened by security so it needs to be easily repackable. Mike -- View this message in context: http://n2.nabble.com/K3-Carry-on-Pelican-1510-tp4218893p4220993.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] K3 needs survey -- firmware and application software
There is a lot here about the K3 firmware tweaks - so I will address the other sides of Wayne's question. Application software - I have a KRC2 and I would like it to know the difference between 6m and 10m. In fact it would be nice to get away from the fixed bands per relay and instead map bands and potentially sub-bands to relays via the utility. The new KRC2 firmware can apparently manage this but unfortunately the KRC2 setting utility can not yet program it. It would be great to have an update to that. Not asked but new hardware - how about a multiple antenna output board without an ATU? Especially for those of us using HF and 6m beams. The IC7000 has 4 antenna sockets. The K3 has 1. Please can we have an XV70 transverter? Many more Eu states are getting 4m. -- View this message in context: http://n2.nabble.com/K3-needs-survey-firmware-and-application-software-tp4209832p4210966.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] k144xv question
Very interesting. Hopefully details on how to drive microwave gear to follow too. I am wondering what to do with the unneeded second crystal. There is no need at all for 146-148 over here. -- View this message in context: http://n2.nabble.com/k144xv-question-tp4205050p4206359.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] XV432
Not quite - but I can comment on the XV144. The stability is OK with the crystal oven though not exceptional. It need to be left on all the time or it will take a while to settle on power up. There is a jumper for that. The XV432 is likely to be approximately 3x less stable than the XV144. Mike w2bvh wrote: > > Can any of the owners of a XV432 comment on the frequency stability? > > Thanks. > > --Lenny > > > -- View this message in context: http://n2.nabble.com/XV432-tp4159735p4160089.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] [MM] W2 Questions [pending firmware changes and software applications]
That is brilliant - but can I re-make a plea I made at Dayton for a bit more power hndling at VHF. All I need is 400W, the UK limit, SSB not FM, and I don't really mind if I have to do a few modifications. Mike -- View this message in context: http://n2.nabble.com/Re-W2-Questions-pending-firmware-changes-and-software-applications-tp4143406p4147530.html Sent from the [MM] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 2 meter capability: internal K144XV or XV144 transverter?
It is really up to you but a 100W VHF amplifier should not need more than 10W of drive, typically much less. A 300W will amplifier perhaps need more drive. Of course the output will be cleaner if under run, so a 25W amplifier running 10W ought to be cleaner than when running 25W. You only really need 25W of drive if you are using a large triode and hoping for 1500W, indeed perhaps more like 50W would be appropriate. For a 300w solid state PA like the reccomended by me Tokyo Hi Power HL-350Vdx it makes no difference. It has 10W, 25W and 50W input settings. Mike Phil Hystad wrote: > > What is the better solution for adding 2 meter capability to the K3, the > new internal K144XV or the XV144 transverter. I see that the power output > of the K144XV is 10 watts and that the power output of the transverter is > about 20 to 25 watts. Let's assume I would want a 100 watt PA, does it > make a difference on whether I have 10 watts drive or 25 watts drive? > Since I have not looked at any such linear amplifier I am not sure what > the drive requirement would be. > > I have not exhaustively read all the documentation available on these two > but I was curious if there were any "stand out" reasons for choosing one > over the other. > > Thanks, > 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 > > -- View this message in context: http://n2.nabble.com/K3-2-meter-capability-internal-K144XV-or-XV144-transverter-tp4130176p4130949.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] [HAM] Windows 7 and LoTW
I have just requested a new certificate. I had an error message that mine had expired when I tried to import into the new Windows 7 system. The error message was variable though so it might not be that. Mike AB3EN wrote: > > Has anyone been able to install a TQSL certificate under Windows 7? I have > been trying to get the certificate request to function and ARRL folks have > not been helpful. I get the should work...duh response. Looks like a > security flaw in the TQSL program that taking ownership, or run as, or XP > SP3 compat does not fix. Suggestions please. > > Dan AB3EN > -- View this message in context: http://n2.nabble.com/Windows-7-and-LoTW-tp4121394p4122745.html Sent from the [HAM] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K144XV, UK VAT increase
Indeed very generous - thank you Eric. We will find out on Wednesday our fate for the next year in the budget statement. It is likely to be tough. Mike Dear Eric, Many thanks for a most generous gesture. This will be much appreciated by me and your other UK customers for the K144XV. 73 to all, Geoff G3UCK -- View this message in context: http://n2.nabble.com/K144XV-now-shipping-tp4049514p4122728.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] [K3] Top Posting is the official standard for the Elecraft list
What is all this Droid stuff? I am afraid the latest shipping date estimate of 16th December is just too late for all of us in the UK. The tax applies when it arrives, not when it was sent. So that is only 2.5% but the Dollar is going up again as well. I am wondering about cancelling. I have been thinking about it for a while. As far as I can tell there are no advantages over the XV144 at this time. The milliwatt output for driving microwave transverters is not in place yet. Mike -- View this message in context: http://n2.nabble.com/K144XV-now-shipping-tp4049514p4120763.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] Anyone using K3 only for VHF ?
It works very well. I don't use my K3 exclusively on VHF, as I do come on for the UK 80m elecraft net. The actual RF frequency is the one displayed in all cases. I have found the K3 to work exceptionally well on 50, 70 and 144 MHz, the latter bands via XV70 and XV144 transverters. It is a little insensitive on 6m without a preamp. The K3 receiver is better than most HF/VHF radios with the possible exception of the IC275, probably the best 144MHz rig ever made. You need to get the gain distribution right, remember >90dB difference in signal strength between the QRM and what you want to hear is quite normal on VHF. Too much transverter gain is bad, I have a 15dB pad in IF line as the XV144 and the masthead preamp have too much combined gain. Mike Lionel Lhermitte wrote: > > Hi guy's, > > > > Quick question from today, is someone using K3 for VHF only ?(I'm using 2 > SSB meters bands) What are the results ? Better than a jap's one ? > > I'm ready to buy another K3 only to use in vhf mode. May be this looks > stupid for some of you, but if RX quality is here..I will not hesitate. > > VHF frequency is displayed on main or sub ? > > Any comments are attended > > 73, Lionel, Paris, France. > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/Anyone-using-K3-only-for-VHF-tp4112230p4114221.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: REF IN
Ian White GM3SEK wrote: > > What the KREF3-EXT module should be able to deliver is complete freedom > from frequency drift, for almost all practical purposes. There could > also be great communication value in being able to lock a pair of K3s to > the same global GPS standard, even when they are half a world apart > And as long as the world is not moving relative to itself the TX and RX could be dead on frequency for low bandwidth modes. Usually things are moving. We could measure the Doppler on the HF signals due to the movement of the ionosphere and do many other things... The KX144 can not be locked to the reference, it uses a different LO. If it were based on the reference oscillator we would not be hearing of crystal supply problems. It ought to be possible to lock the supplied TCXO - or a replacement to GPS using the 1PPS or 10kHz signals from a GPS receiver. That might be more useful to most amateurs than a 10MHz reference input. As an interim solution - I wonder if Wayne could produce a routine to automatically correct the K3 based on a user settable reference frequency? It could be WWV or a GPS locked beacon, a shack based 10MHz source. If that is done after the K3 has warmed up it should stay within a Hz or so for hours. Currently I do this manually for the transverter bands - where it matters for me. I tune to my 70MHz beacon in CW mode and trim the XV offset to zero beat with the CW tone. It requires iteration to do this. Measuring an offset in frequency is the sort of thing the DSP could do much better and quicker than I can. -- View this message in context: http://n2.nabble.com/K3-REF-IN-tp4105110p4111200.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Broken AF knob and bad service to get a replacement.
All this is very interesting. It certainly demonstrates the need for the continual product testing Elecraft undertake. Sending spares to remote regions with poor postal services, e.g. the UK is an expensive and slow business. The problem with the wrench - or hex key is a real one. It also applies to all the nuts and bolts used in the K3. For unknown reasons of patriotism the USA is non-metric so these are all in imperial sizes. Getting these outside of the USA is getting harder and harder. Failing Eric or Wayne running for president and changing this, and with Elecraft now becoming a major international force, would it not be better to use metric for new Elecraft designs? Mike, UK. -- View this message in context: http://n2.nabble.com/K3-Broken-AF-knob-and-bad-service-to-get-an-replacement-tp4105121p458.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 coarse tuning in a transverter band
Sounds like a bug. The obvious fix its to fix your transverter so it has an offset that is a multiple of 1kHz. If it is an XV144, hard luck for a while until it gets sorted out. Mike Graham Kimbell (G3TCT) wrote: > > I've just upgraded from firmware 3.27 to 3.63. > > I used the VFO CRS menu entry to select RND= YES so that the RIT knob > moves > the VFO correctly eg 1kHz steps and rounded. It works fine on the standard > bands. However on switching to a transverter band, the frequency is > rounded > to 20Hz away due to the transverter offset that I have set up. This is not > the desired behaviour, and has changed since f/w 3.27. The effect is the > same when using the main tuning knob in coarse tune. > > Anyone know how to cure this? > > Graham > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K3-coarse-tuning-in-a-transverter-band-tp4079010p4079095.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] What to use to turn on remotely my K3 ?
I produced a little utility to control the K8055 card if anyone is interested. The card comes with a simple control program anyway but I wanted to label the buttons and allow configurations to be memorised. Mike -- View this message in context: http://n2.nabble.com/What-to-use-to-turn-on-remotely-my-K3-tp4069550p4071912.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] What to use to turn on remotely my K3 ?
When I did it about a year ago I used HRD plus a toggle on the appropriate interface line on the DB15 plug to power on and off the K3. I used a relay controlled by USB. There are plenty of interfaces available, all you need to do is write some simple code in C++. Many of the EBay interfaces come with limited software but they frequently use the HID interface so you can write your own control software. If you don't want to write code try and find one supported by amateur radio software, these tend to cost more. If you want to go that way look at the LP Remote. The Modtronix Ethernet boards are very good for remote control as you have a web interface and can also monitor voltages etc. It means you do not need a PC left on and if your PC crashes you can reset it with a relay across the reset switch. WW2R has written code to control his, mine is still in the projects stack. Velemann do a popular USB interface kit, the K8055 for about £25. This requires a PC to drive it but you get 4 relays and plenty of digital and analogue IO ports. Many people have written software for this unit, me included. The kit comes with a disk with sample code and a DLL to interface to. Finally, there is always the PC printer port, if you have one. It is the simplest and lowest cost method and you can drive it directly from popular radio control software. Mike John K9UWA wrote: > > What hardware and software are you using to turn on and off your K3 over > internet from a remote location? > > Thanks > John k9uwa > John Goller, K9UWA & Jean Goller, N9PXF > Antique Radio Restorations > k9...@arrl.net > Visit our Web Site at: > http://www.JohnJeanAntiqueRadio.com > 4836 Ranch Road > Leo, IN 46765 > USA > 1-260-637-6426 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/What-to-use-to-turn-on-remotely-my-K3-tp4069550p4069883.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3 Production Firmware Release (3.63)
Strangeness with the DVR. If I press M1-4 to initiate a memory call all is OK. If I then hold M1-4 while the message is sending to enable repeat mode, on the first cycle the PTT does not drop at the end of teh call for a couple of seconds, then all continues as normal. If I simple initiate with a hold, the first message does not have the extra PTT hold. Mike -- View this message in context: http://n2.nabble.com/K3-Production-Firmware-Release-3-63-tp4053364p4061422.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] K144XV now shipping
This is a big issue for us. If delivery slips to 2010, which looks likely, I will have to pay more tax. Mike Eric Swartz - WA6HHQ, Elecraft wrote: > > Hi David, > > - We're not quite shipping the K144XV yet. We have encountered several > other new parts delays that were unexpected. A fallout of suppliers > cutting their inventories in response to the recession is my guess. I > don't enjoy getting blindsided like this. > > I just updated the status page this morning: > --- > K144 XV Status > Latest Estimate - Starts Shipping 12/9 > > We've just received the crystals (as of 11/23), but several other parts > are unexpectedly late from their suppliers. We expect several of these > early next week (due to the Thanksgiving holiday 11/26-27) and the last > parts late next week or early the following week. We apologize for the > delay on this! > --- > > I'll keep everyone updated as we get this out the door. > > 73, eric WA6HHQ > > > > David Pratt wrote: >> According to the Shipping Status I see that the K144XV started shipping >> last Saturday (11/21 US). >> >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K144XV-now-shipping-tp4049514p4053148.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] UK Elecraft SSB Net
Thanks Ian I was busy last week but hope to attend today. Mike Ian Maude wrote: > > Hi all, > Just a reminder that the net will be run as usual on 3658 +/- QRM at 09:00 > tomorrow. I hope to see you there. We had a good discussion on several > topics last week and it would be good to get your input. > > 73 Ian > > -- > Ian J Maude, G0VGS > SysOp GB7MBC & HB9DRV-9 DX Clusters > Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 > http://www.amateurradiotraining.org > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/UK-Elecraft-SSB-Net-tp4005213p4045485.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] k3 box
Eric Swartz - WA6HHQ, Elecraft wrote: > > Hi Dick, > > Not at this time. We are only producing the one with the holes ;-) . > > 73, Eric WA6HHQ > But Elecraft are selling the corner pieces and the paint so it ought to be possible for someone to make their own case. Perhaps Elecraft could make available the bail stand and feet and advise on where to buy aluminium plate of the correct gauge. Mike -- View this message in context: http://n2.nabble.com/k3-box-tp4028826p4034518.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] [MM] W2 review
Thanks for the report Ken, I am afraid I don't see a need for one of Rose's covers for it. I am waiting for an uncommitted sensor so I can measure high power at VHF and above. Regarding powering: My K3 12V output powers an automotive relay (+diode) which connects the 12V PSU to an 8 way powerpole panel. This allows me to control the power to the LP-100A, the transverters, the KRC2 and an AT-1000pro with the K3 power switch. Mike -- View this message in context: http://n2.nabble.com/W2-tp4000196p4003512.html Sent from the [MM] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3 and RFspace SDR-IQ?
Since Moe updated the software it is now officially brilliant. You can't do better for the price and their support is as good as Elecraft. Mike K3PIN wrote: > > Can anyone tell me their experience using the K3 with the RF space SDR-IQ? > I emailed the company for info and so far I am not impressed with their > lack of response to my inquiry. Is this the type of support I'll get if I > purchase one? > > Steve-K3PIN > > :confused: > -- View this message in context: http://n2.nabble.com/K3-and-RFspace-SDR-IQ-tp3916258p3920614.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] [MM] W2 high-power VHF sensor?
I agree - we will just have to wait - or modify the 200W sensors in some way - I think the limitation is the coupler termination, getting up to 400W (UK limit) might be possible. Perhaps in the interim, when it arrives, I will put the meter on the radio side - after all an amplifier has fixed gain, within limits and not over driving the imput is as important as not overdriving the output. My W2 is on order since Dayton, I have not heard it is ready yet and I have not decided on the sensor yet but as I have an LP100 I have no need of another HF sensor. Elecraft - how about producing a sensor without the coupler - so we can develop our own. I am sure you don't want to make one for each and every application e.g. 23cms or 500kHz. Mike -- View this message in context: http://n2.nabble.com/W2-high-power-VHF-sensor-tp3916483p3920597.html Sent from the [MM] 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] Has the k2 a future - not if you use Li-Po cells!
This is why I eventually decided to use AA NiMH cells instead when replacing the lead acid battery in my K2. I use 10 AAs in a pack, this gives me 2.5AH vs ~3AH for a small LiPo pack of similar mass. The LiPOs are fine but I will keep them outside the case so I can throw them somewhere if a fault occurs. I am sure computer packs are fine but I am wary of the RC type packs. The advantage of NiMH is they are easy to charge. They may fail faster but they are very cheap to replace. Mike -- View this message in context: http://n2.nabble.com/Has-the-k2-a-future-not-if-you-use-Li-Po-cells-tp3857944p3860431.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] Fwd: UK Elecraft Net
Sorry - I have been roped in to JOTA this weekend. Mike Ian Maude wrote: > > Just a reminder about tomorrow morning. I hope to see you there :) > 73 Ian > > -- Forwarded message -- > From: Ian Maude > Date: 2009/10/11 > Subject: UK Elecraft Net > To: Elecraft List > > > Hi all,Conditions have improved again in the UK on 80m so we are going to > restart the weekly SSB Elecraft net. I will be running the net each > Sunday > on 3658 +/- QRM at 09:00 BST (08:00 GMT) and I hope to hear you there. > There have been many changes (certainly on the K3 front) since the last > net > was run and many more planned additions so we should have plenty to talk > about. There have been many more K3's delivered since last year too! I > should mention that this is *not* a K3 net, it is an Elecraft net. If you > own a K1 or KX1 and want to call in on any other make of radio you are > very > welcome. > I hope to hear many of you next weekend. > > 73 Ian > > -- > Ian J Maude, G0VGS > SysOp GB7MBC & HB9DRV-9 DX Clusters > Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 > http://www.amateurradiotraining.org > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/UK-Elecraft-Net-tp3802974p3841788.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] 144mhz transverter
This is not strictly true. If you can lose the 10W in an attenuator you can use the K3 just like any other radio to drive the transverter. But I agree the best thing to use is a KXV3A. This gives you the connections you need. One thing you will not have is the control provided by the Elecraft auxbus. I know it is expensive andnot really a technical challenge but you might be better off buying the built in 144MHz transverter. If you want a technical challenge, I am sure you can find another one. Mike Dave G4AON wrote: > > You will need the KXV3 (or KXV3A) transverter interface. It's a plug in > board that is easy to install, see the download version of the manual > for it. > > 73 Dave, G4AON > K3/100 #80 > --- > > I am in the process of building a 144 mhz transverter for use with my > K3/10. > I'll use a 116 mhz "LO" and the 28mhz "IF" of the K3 for this purpose. > Do I need to obtain an upgrade circuit PCB's from Elecraft? My K3/10 > does not > have any additional options. > > Thanks you help is appreciated > RC kc5wa > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/144mhz-transverter-tp3841548p3841678.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 bad TX
Just to demonstrate that the K3 TX spectrum is excellent, I have uploaded some plots to flickr starting at http://www:.flickr.com/photos/ad6xy/3980006295/ with the ones between up to http://www.flickr.com/photos/ad6xy/3980007573/ showing the close in spectrum at 100W output on 14.2 MHz for a CW tone - it has no obvious spurii except those close to the carrier above -90dBc. The close in plot shows the usual 50Hz mains spurs plus some at 400Hz but even these are 60 dB down. I am not sure if the K3 is better than the analyser. I did some 2-tone tests to see if it could be that, they are in the following 4 pictures but again, there is nothing wrong and indeed the results are rather good for a 12V PA. It is interesting the K3 is cleaner close in at 50W than at 10W. That is because of the bypassing of the PA below 12W. I thought this had been corrected to 10W when the big PA was limited to 100W but not so. Mike -- View this message in context: http://n2.nabble.com/K3-bad-TX-tp3763903p3764595.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 bad TX
I had a similar problem on receive for a while - also transmit. It turned out to be a fault in the VCO. I found it using my spectrum analyser. If you don't have one consider getting one. A panadapter will also show it. Hunting around with another rig is not as good a method but should also work if that other rig is clean itself - it will be hard to find a rig as clean as a properly operating K3 though. I am suspicious as I would not expect both rigs to have VCO faults. It might well be something else like a stray mganetic field or PSU issue. If it is a VCO fault, your K3s should show it on both TX and RX. You can use your signal generator to produce a strong carrier and tune for the spurs. If you do not have a signal generator a crystal oscillator would do as well. If it is only on TX, it is not the VFO. There is a mod for the older VCOs you ought to do but it is not directly for this problem. My faulty VCOs spurs were - I think 30-40 dB down and the phase noise was pretty bad - I have an analyser plot of it somewhere. To fix it I swapped over the VCOs between sub and main, it not being very practical to send stuff back when you are outside the US and with this sort of thing the instability might not show up in a different K3. The second VFO which was a later version is very very clean, there are a couple of spurs either side of the carrier but a long way down. Good luck fixing it.I just wish all the other people out there cared as much as you do about their transmitted signals as I come across some really bad ones on the bands - usually from overdriven linears. Toni Lindén wrote: > > I was using SO2R with pair of K3s' and had similar reports with both > radios, so I guess it's not the amp issue. The bands where I got > reports were 20M and 15M (on 10M were no propagation and maybe 40M and > 80M were too noisy to notice the 2nd sigs). > > All antennas are OK and no difference was noted with antennas. > > 73 de Toni, OH2UA > > >>Tke the amp out of the equation and see if you still have the issue. Try a >>different antenna and check the SWR. I would suspect one of those to be the >>issue. At least it will eliminate some variables. >> >>Dan AB3EN >> > > Toni Lindén wrote: >> >> Hi! >> >> I was trying K3 for first time in SAC contest a couple of weeks ago. >> >> During the contest I got multiple reports that besides of my run >> frequency, I also had other reasonable strong signals "around the >> band". >> >> It cleared out that I had at least one other signal about 7kHz away >> from my actual freq. It was quite strong, maybe 40dBs down from my >> running freq. >> >> Have anyone else had similar problems and do you have any suggestion >> how to fix this? >> >> I was using only about 60 to 70 watts drive for the amp and amp was >> not pushed over. The same appears on both, CW and SSB. Radio has the >> most resent FWs available via K3 utility SW. >> >> I'm planning to take K3 with me to CU2 for CQWW, but after getting >> such a bad reports about "my 2nd pileup" on the same band, I'm not >> sure if I'm willing to make such an interference to others on CQWW... >> >> So if anyone has any advice, I'm more than pleased to hear! >> >> >> 73 de Toni, OH2UA > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K3-bad-TX-tp3763903p3764324.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: FM coarse tuning rates
That would be great thanks. We are still using imperial fractional rather than decimal channel spacing over here in Europe. Incidentally, you mentioned earlier "I could easily" so I take it you are not writing all this code in assember. What arwe you using? C? Mike wayne burdick wrote: > > Added to my list. > > 73, > Wayne > N6KR > > > -- View this message in context: http://n2.nabble.com/K3-proposed-SSB-coarse-tuning-rate-change-tp3737732p3751045.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] Replacing the Lead acid shell inside K2 with Li-Po cells
I thought about this and even bought a 3 cell battery and balanced charger - then I realised the dangers of LiPo and decided against it in favour of 10 2.5AH NiMH cells in a 5 over 5 holder. This fits in fine in place of the lead acid, is a lot lighter and can be charged quite easily with minor modifications to the K2 battery system. I am interested in the results though as I still have the LiPo and balanced charger. Mike Johnny Siu wrote: > > Hello Group, > > 3.7v 3300mAH Li-Po cells are cheaply available locally. Multifunction > balance intelligent chargers are cheap as well. I am seriously thinking > of replacing the lead acid cell inside the KBT2 with 3 x 3.7v Li-Po cells. > > However, charging of the Li-Po cells requires multifunction charger. The > existing battery circuity inside K2 seems not fit for this purpose. A > direct connection to the battery terminals is required. > > I would be grateful if any of you could advise me the 'do' and 'don't' > that I should pay attention to. > > With the Li-Po cells installed, the weight of K2 QRP will be much reduced > with more battery capacity. K2 is even more suitable for ARES purposes. > > Looking forward to your advice. > > TNX & 73 > > Johnny VR2XMC > > > Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ > 了解更多! > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- View this message in context: http://n2.nabble.com/Replacing-the-Lead-acid-shell-inside-K2-with-Li-Po-cells-tp3740663p3740930.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: proposed SSB coarse tuning rate change
This is the one aspect of the K3 I find frustrating. To QSY a few hundered kHz takes a lot of turning. I really like the way some radios speed up the tuning rate as you turn the dial faster. I use the RIT tuning very often to QSY quickly and for larger steps I end up having to use DFE which is tedious and often results in mistakes. I think this is almost the only thing Icom do better. To answer your question Eric, I don't find the higher corse tuning steps useful so I won't miss 2.5kHz steps. wayne burdick wrote: > > We've had many requests to provide an 0.5-kHz VFO tuning step size in > SSB modes. I'd like to substitute this for the current 2.5 kHz > selection. The new set of steps sizes for SSB would then be: > >0.1, 0.5, 1.0, 5.0 > > Most operators probably don't find 2.5 kHz steps to be particularly > useful. 0.5 kHz, on the other hand, seems to be a useful lowest-common- > denominator for tuning the SSB band segments. > > Each mode can have up to 4 step sizes with the K3's present per-mode > data structure. I could add more step sizes, but that would require a > much more extensive change. > > Please let me know if you have a compelling requirement for 2.5 kHz > steps. > > 73, > Wayne > N6KR > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K3-proposed-SSB-coarse-tuning-rate-change-tp3737732p3738936.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] SDR-IQ
It is a known issue with Spectravue. The only down side to the software at the moment. Mike Maarten-2 wrote: > > I am setting up a K3 with a SDR-IQ and spectravue. > > When selecting K3 in extRadiosetup menu I cannot keep the IF inverted. > > Is this a software problem with spectravue? > > Anyone on this list working with SDR-IQ with Spectravue 3.01? > > Thanks Maarten > > > > > > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/SDR-IQ-tp3733686p3734699.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] Check Your Buttons [switch current is _not_ too low]
I remember having this problem with an old Advantest Drift-o-matic spectrum analyser at Uni. The buttons stopped working because the plastic let out some oils and this coated the gold and stopped the contacts working. I am not saying this is what has happened to Elecraft, I am sure that problem from 20 years ago if fixed now. My fairly recent Anritsu spectrum analyser has diffficult buttons too - as apparently does this laptop so it is a common problem. My K3 has sometimes had problems with switches too, but only rarely. My K2 is much worse in this respect. Have we found any user applications for the connector on the bottom of the panel yet? -- View this message in context: http://n2.nabble.com/Re-Check-Your-Buttons-switch-current-is-not-too-low-tp3707851p3708135.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3 3.33 Beta - did I miss it?
I missed it too Bill NZ0T wrote: > > I don't see it yet on the download page and I thought I read that it would > be available by early this week. > > 73, Bill nz0t > -- View this message in context: http://n2.nabble.com/K3-3-33-Beta-did-I-miss-it-tp3707050p3707096.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] Reï¼ RadCom, Chinese K1?
Those of us over 40 might remember cheap Japanese products being where China are now - except China are way ahead of most of the rest of the world already. If you want good quality electronics, it probably will come from China. The K1 does not come from China, but I expect many of the components do. My PC was made in China - fastest I have ever had and cheapest too. My TV came from China (ditto) my mobile phone was made in China. and so on. If there is an Elecraft in China I wish them every success and I expect Elecraft will too as long as they are not making direct copies. Mike -- View this message in context: http://n2.nabble.com/RadCom-Chinese-K1-tp3685071p3685442.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 firmware preview: Much-improved receive AF bass response
Just release it - you know it works already! We have confidence in you. Beta is beta. wayne burdick wrote: > > The next K3 beta firmware release will include dramatically better > bass response in receive mode (50-200 Hz). The result is fuller, > richer audio, which many of you have asked for. > > Lyle (KK7P) and I are completing the full beta test suite, and hope to > do the release early next week. But we could also use a couple of > volunteers--who really like low bass--to try the field-test release. > > 73, > Wayne > N6KR > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K3-firmware-preview-Much-improved-receive-AF-bass-response-tp3667622p3672489.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] [K1] K1 U2 extraction help!
You probably made the best choice for you. If the chip is cheap - which it is just cut the pins and remove individually. It is fairly easy to remove such a chip using hot air or thick tinned copper wire. You need to be careful with hot air but if you mask off the rest of the board with a piece of aluminium with a hole in it to view just the pins and heat from the bottom you can heat all pins at one and the chip will drop off. I have used this technique many times but usually I am interested in salvaging the component and not the PCB. If you get it too hot you can burn the PCB. I have an SMD hot air cun that makes this operation very easy. I assume you don't have one - so perhaps best to not try. The other way is with copper wire. Solder a thick piece of copper wire to all the pins at the base. Small piece of copper shim wold do as well. Then heat this with a hot iron so all the solder for all the pins melts. The chip will drop out. I wish elecrat would start to go on the SMD route. Removing SMD components is much easier. When you learn how the larger sized SMDs so are much easier to work with than leaded parts. Mike Gary W. Marklund wrote: > > Thanks to all that replied on and off list. I've tried a wick and the RS > solder sucker and have the bottom clean and clear but there is still > just a bit but enough solder on the top of the board to hold the IC in > place. Think I'll go the safe route and order a replacement from > Elecraft and clip the leads on the existing one. > > 73, > Gary > KJ7RT > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/K1-U2-extraction-help-tp3537980p3671727.html Sent from the [K1] 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
