[Elecraft] K2/100 plus KPA100/KAT100 for sale
I have a fully loaded (except the DSP) K2/10 plus a KPA100/KAT100 for sale. Serial number 5336. Please contact me off list at g3...@yahoo.co.uk. QTH correct on QRZ.com. It goes to the auction site on 9th September if not sold beforehand. 73 Bob G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Sorry, item for sale should read K2/10 plus KPA100/KAT100
73 Bob G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Antennas for K1 field use
I agree that random wires and fishing poles are as good as most antennas in the field but a PAC12, or homebrew version of the same, needs no other supports and is compact and light. It's an ideal beach antenna, where salt water helps minimise ground losses, and I've had plenty of transatlantic QSOs with the PAC12 and 3W from a K1 and KX1. At least for these circumstances, it's a good compromise. Beaches tend to be short of trees! 73 Bob G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Battery for K1/KX1
I recently found what appears to be an excellent battery for the KX1 and K1 in the field: It's a very compact lithium battery pack rated at 12V 3.5Ah - just a little smaller than the KX1 footprint. I have not used it over many re-charge cycles yet, or measured its performance but it does give several hours' operation with the KX1 and is a great deal lighter and easier to carry than an SLA type. The charger that comes with it looks cheap but works. The battery itself is encased in a metal box with on/off switch. I don't notice any heat when it's being charged. I have no commercial ties with the guy selling these on eBay and I take no responsibility if you buy one and have any problems. Mine works just fine and I thought it may be of interest to other QRP enthusiasts. Details are here: http://www.tinyurl.com/QRPbattery 73 Bob G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KPA-800 etc.
I wonder if Elecraft has ever considered doing an OEM deal with another amp maker? SPE, makers of the Expert 1K-FA might be a good candidate. Some packaging re-design to match the K2/K3, together with software changes for integrating the amp tightly with the Elecraft radios, could satisfy many of us whilst avoiding much more up-front development cost, or the delays and costs associated with approvals from the various regulatory authorities. I run all Elecraft radios, with the exception of an IC7000 for mobile, so I make this suggestion as a big fan of the company. I would not wish to see product or service standards compromised, but when it comes to these long-awaited amps, maybe it's time for a different approach, or a clear statement from Elecraft that the company does not intend to be in the amp business for the foreseeable future. 73 Bob G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - very quiet on 30m and 20m
Don, thanks for that information. Here's what I have. TX appears fine. With 12.3V supply I get the following output: 80m 3.3W; 40m 2.9W, 30m 3.8W, 20m 3W. All measured by an Oakhills Labs QRP meter and a 50 Ohm dummy load. The RX seems to have a problem. I have done a careful check of all trimmer settings. Measuring across the volume control (all controls fully clockwise); XG2 set to 50 microvolts (battery checked!); Fluke 175 true RMS meter (by a lucky coincidence): 40m: 163mV with earbuds connected; 185mV without 20m: 140mV with earbuds connected; 158mV without Leaving the earbuds in, I then tried injecting the XG2 directly on the junction of L6 and the top of the RF gain pot. The difference in audio level is dramatic, particularly on 20m, but I still don't get anywhere near your figures: 40M: normal antenna input 163mV; direct to top of RF gain pot 275mV 20m: normal antenna input 140mV; direct to top of RF gain pot 550mV - getting closer! Other checks I've done: - Made sure that the break in the PCB and subsequent link is OK for the addition of the KXB3080 - Checked L6 for continuity - Checked connections to KXB3080 - and ensured that A B are as shown in the manual i.e. B goes nearest to T1. - Checked all voltages on U6 - within spec - Checked connections of T2 and re-soldered joints (this was supplied by the Mychael) - Checked L3 is the later version with the right number of turns This feels like it may be a problem with the pin diode switches, but that still doesn't really explain why I can't get anywhere near your 0.8V figures across the audio pot. 73 Bob G3YIQ On 18 Mar 2009, at 23:39, Don Wilhelm wrote: Bob, OK, I finished the KX1 up to the point where I am able to give you some numbers. With a 50 uV input at 7040 from my XG2 signal generator, I find 0.866 volts measured across the AF Gain control (control set to maximum) with a high impedance load at the headphone jack. If I plug in headphones (Sony MDR series), the voltage drops to 0.836 volts. Of course, the AGC should be active which will keep the voltage down a bit. The KX1 has the KXB3080 option installed, and the receiver front end is a little more sensitive than either the original KX1 or with the KXB30 installed. With a 1 uV input, I read 38 to 40 mV at the same point - AGC should not be as active at that level. The voltage readings were obtained with a Fluke True RMS reading DMM. 73, Don W3FPR Don Wilhelm wrote: Bob, I can't give you a measurement number right away, I do not have a working KX1 here at the moment, but that value may be possible tomorrow or Friday. If you do not hear quite a loud signal with the 50 uV output from the XG2 (or XG1 with a 20 meter crystal) - with the RF Gain at full clockwise and the AF Gain between 25 and 35% of rotation, then there is something wrong. How is the transmit power output? If that is OK, then the low pass filter is likely OK, and you might want to look at T2. The KX1 audio is not super strong, and having good volume does depend on using sensitive headphones. If your headphones do not have an sensitivity rating greater than 108 dB/mW, then your headphones may be the major problem, see the KX1 manual page 62. 73, Don W3FPR Bob Jones wrote: I've just completed a KX1 build with the 80/30m option and auto atu. It works on all bands but 30m and 20m require the volume control to be fully clockwise and even then it's quiet. I've carried out the recommended checks and everything appears to be fine. Having read the previous posts on 'low audio' there's an element of subjectivity regarding what this means. Does anyone know of a definitive measurement I can make to see if this radio is working as well as it should? For example, I have the XG1 and can inject a 14.060 MHz signal at 1 microvolt or 50 microvolts. With the bandwidth set to maximum, what level of signal should I expect on the input or output of the audio amplifier, or at any other point in the circuit? Any advice gratefully received. Bob, G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.18/2009 - Release Date: 03/18/09 07:17:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help
[Elecraft] KX1 - very quiet on 30m and 20m
I've just completed a KX1 build with the 80/30m option and auto atu. It works on all bands but 30m and 20m require the volume control to be fully clockwise and even then it's quiet. I've carried out the recommended checks and everything appears to be fine. Having read the previous posts on 'low audio' there's an element of subjectivity regarding what this means. Does anyone know of a definitive measurement I can make to see if this radio is working as well as it should? For example, I have the XG1 and can inject a 14.060 MHz signal at 1 microvolt or 50 microvolts. With the bandwidth set to maximum, what level of signal should I expect on the input or output of the audio amplifier, or at any other point in the circuit? Any advice gratefully received. Bob, G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Wanted: XV 144
I'd like to buy a ready-built or kit XV 144. Delivery can be to a US address if shipping to the UK is a problem. PayPal payment available. 73 Bob G3YIQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] WANTED: XV 144 2m transverter
Ready built or unwanted kit? If shipping to the UK is a problem, I can provide a US address for delivery. PayPal payment available. g3...@yahoo.co.uk 73 Bob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] FOR SALE: Microham MK2R+ with K2 and K3 leads
I have a Microham MK2R+ for sale in the UK, complete with connecting leads for SO2R operation with K2 and K3. It's under 3 months old and in mint condition - complete with the original box. Check it out on Eham.net, it gets a full 5/5 rating. One review said: I expected nothing else from Microham but first rate gear and this 2- Radio Interface is THE FINEST Asking £375 including postage and packing (saving over £100 on the price new). Please contact me off list. Thanks and 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT Apple iMac
Hi Tom I use an iMac in a similar set up to yours - with the lovely little Bluetooth keyboard etc. Go to 'Control Panels' (when in Windows) Select 'BootCamp' One of the tabs will give you the option to assign F keys to the application - can't remember which one, and I'm traveling at present. Works with HRD and N1MM. 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 wish list - option to turn off display
I increasingly like to operate remote, especially when traveling. This can sometimes mean that the rig is turned on for several days. I have some concern about burn-out of the LCD display in areas where it remains unchanged for long periods. Maybe this is an unjustified worry, but it would be good to have the option to simply turn off the display when using remote operation, or even when operating the rig from a PC in the shack. Bob, G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RS-232 connection failure
David thanks very much for your reply. I've checked it out and the sidetone works just fine - I can hear it in the speaker, but still no RS-232 connection to the PC. Really appreciate you taking the trouble to get in touch though. 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] RS 232 connection failure
Hi my K2/100 Nr 5336 has fallen out with my PC - they've stopped talking to each other. I use microHAM's USB device router and a number of serial to USB adapters, all of which have worked fine until now. The same adapters work perfectly with my Icom rig but I get no response when the PC polls the K2. I use VQLog for general logging and Writelog for contests - neither will now work with the K2. Done the obvious stuff - checking that the port is switched on at the K2 and checking all the connections on the DB9 adapter lead. I also use the KAT100 and have tried with it connected and disconnected - no difference. Any ideas on where I can start looking for the fault would be very welcome. 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] HF Amplifier
Hello Jean-Francois I suggest you take a look at the Expert 1K-FA from SPE: http:// www.linear-amplifier.com. I was waiting for the Elecraft amp then got impatient and bought one of these. This is a fully automatic amplifier that will work with any rig - it will drive to about 2/3 full power with my K2 in low power mode, but I seem to remember that there may be FCC issues with that kind of gain? It does use relays for QSK but they are not very loud. It's a very portable amp too - and even comes with its own carry bag. Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Sending CW from WriteLog
I have my K2 connected to Writelog and can read frequency through Com 4 but I can't send CW from the program via the same port (this is the arrangement I use for my FT1000MP). Is the K2 capable of this function or do I need a different arrangement. As a Mac user for 20- odd years, I'm afraid that anything PC-related is still largely a mystery to me - so apologies if it seems like a dumb question! 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Receiver overload on 40m
I've recently completed K2 5336 but only today connected a properly resonant antenna on 40m. The results surprised me. With the pre-amp on the receiver suffers from serious overload and intermodulation and 40m - a problem that does not occur with the same set up on my FT1000MP. I've played around with AGC and RF gain settings but it is pretty much unusable with the pre-amp switched on. Both the FT1000MP (with no attenuation) and the K2 (with the pre-amp switched on) register S9 for 50 microvolts signal input, so I'm assuming (perhaps wrongly?) that they have comparable sensitivity under these conditions. I know I'm getting sufficient sensitivity for the band conditions with the pre-amp off, but the apparent poorer performance of the K2 puzzles me, particularly as other independent tests have indicated that it should be better than the FT1000 with respect to strong signal handling. Any suggestions? 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 QSK
K2 5336 is up and running with a pile of European and transatlantic contacts on 10W during the first evening on 3.5MHz. I'm delighted with the rig in every respect except one. It's described as full QSK but doesn't come close to offering the performance of a Ten Tec in this respect - although it beats my FT1000MP with its clacking relays hands down! Are there any mods to make this rig true QSK without upsetting the keying waveform? 73, Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] QSK
Thanks for all the comments guys. I may have unrealistically rosy memories of using Ten Tec gear but as I recall the QSK sounded very little from the sidetone when not transmitting - and I guess my definition of true QSK is just that. By the way, my T-R was set to 0.01 - it was better on the ears than 0.00. Anyway, I'm being picky - the rig works great and the only problems building it were down to sometimes being too lazy to read the instructions properly! Onto the other modules... 73 Bob G3YIQ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
