[Elecraft] Now Shipping 2nd Generation Un-Module PCB Kits
Ken began domestic shipments of our new board on Monday August 21st. He will begin international deliveries today Tuesday August 22nd. You just have to see the new board to appreciate it ... the scan on our website doesn't do it justice! Little-by-little I've been migrating our site to HTML so it will support Mozilla's Firefox browser. Although Firefox has bugs of it's own, it is still a very nice alternative to Internet Explorer. If you've never been to our site, or haven't been in a while, I think you'll find it worthwhile. However, for the moment you still need to us MS Internet Explorer to see the embedded images on most pages. Our homepage is http://www.unpcbs.com/ Thanks for the bandwidth, Gary, KI4GGX K2 #4067 ___ 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] KXAT1 with dipole
I was out in the woods of Oregon today (up by the coast range town of Jewell) with my KX 1 and a few different antennas. I used a long wire for a while, but then for the heck of it I set up a 40M inverted vee with my portable mast. The KXAT1 had no trouble with the long wire (and counterpoises) bringing it right down to 1:1, but no such luck with the dipole ( cut to resonate on 40, and fed w/RG 174).I've used this antenna a bunch w/ the K2 and it's pretty much a 1:1, but when using the KX1 atu I got around 9:5 SWR! So, I promptly forgot how to bypass the tuner (until I got home and re-read the manual;set it to 'CAL':).But,also in the manual it states that it'll match most coax type dipoles, etc.Elsewhere it's stated that it won't match a half wave length,but I wasn't clear if that's only for a half wave end fed.I'll bet it's the same for a resonant dipole as it's a ground independent half wave, but maybe someone who has come up against this before can clarify as far as the tuner is concerned. I usually bring a separate antenna 'dipper' just to check the antenna in case there's a short or bad coax,etc., but that got left behind. Just for reference, I use the lightweight dipole kit from N2CX with a nice sealed center insulator and RG 174 (I know it's not the most efficient, but for a short run it's fine and very lightweight). I'm still trying to find more of the type of wire he used in there-it's springy yet has a great slick and tough coating which holds up well in trees, etc, It's also a light yellow in color so it blends nicely.N2CX quit making these kits a while back and ran out of that wire.The 'Wireman' sells some similar stuff,(524?) but it's still not the same. Any thought appreciated on the tuner-I'm trying to get as much outdoor radio time in before summer ends:) -- Dan Presley-N7CQR-Portland, Or QRP-L #502 ARS #71 [EMAIL PROTECTED] ___ 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] SSB board problems
Hi all, I am hoping someone can point me in the right direction here. My SSB board seems to have developed a problem. TX is fine but RX is really down. Even stations who would normally peg the S Meter barely register. If I remove the board and jumper the 2 connectors, the receiver springs into life. I have checked continuity on the torroids and checked the pin diodes (in circuit with the diode position on my DMM) and all seems to be well. Voltages on U1 appear to be ok but I am getting a small reading on some of the pins that should read zero (in the order of 150mV) Any ideas chaps? Ian -- Ian J Maude G0VGS | Sysop GB7MBC DXCluster http://www.gb7mbc.net K2 #4044 ___ 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] Re: After CW transmit K2 receiver is muted.
Dear Tom, sorry for our strong KFKI spam filter. I am now on GPRS connection so it would be difficult to mark your address in my exception list. That is why I am answering you here on the list. As you could see my second mail, my K2 seems working well now with good RF ground, nevertheless, I am still interested in your explanation. Your questions and my answers follow: 1) Does the K2 truly 'mute'? Or can you hear VERY STRONG signals weakly? And can you hear the CW sidetone when it is 'muted'? It sounded like no antenna cable is connected. I could hear the sidetone at key down. 2) Does this occur on a specific band? Or does it occur on ANY band? This happened on all bands. Even switching to other bands the 'mute state' did not change. 3) You state that the HI REFLECTED message appears while receiver is muted... safe to assume that the message ONLY appears during TX and NOT during RX mode? The HI REFLECTED message appeared during CW transmission only, after a short pause when the 'mute state' happened, or when I wanted to clear that state with short key down. 4) You state that the problem occurs with/without the KAT100. DO you mean that you have actually REMOVED the KAT100 from the K2 and the problem is still present? Or than you have only set KAT100 to CAL mode (so it does not attempt to tune) and the message still appears? I removed the KAT100 at all, and the problem came too. 73! de Andras HA4AA. ___ 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
Re: [Elecraft] tokyo high-power whatever it is .................
Bob Robertson wrote: [stuff snipped] A display showing signals across the band being worked? That's exactly what my Z90 panadapter kit does. Jack K8ZOA www.cliftonlaboratories.com ___ 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
Re: [Elecraft] tokyo high-power whatever it is ...
Whatever the Tokyo Hi-Power HT-200 is or is not, it does have a built-in finger dimple g ... Weymouth Walker ... K8EAB ___ 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
RE: [Elecraft] SSB board problems
Ian, I am going to assume that this SSB adapter was working fine before the failure, and I'm also going to assume that it attenuates signals when either the OP1 filter or the CW filter is selected. If either of these assumptions is not correct, I may be way off base. First thing to check is RFC1 and RFC2 - check them for continuity and also for a possible short to a crystal case. Slide a piece of paper between the crystal and the choke as a quick check. You say you have checked the diodes already, so for now figure that they are OK. Check R5 to be sure it is well soldered, and check the soldering of the diodes and R-paks near the filter. A bad solder joint can sit there and work fine for a time, but eventually fail. Check the operation of the switching control voltages. RXS (U1 pin 21) should be active (about 5 volts) when the OP1 filter is selected, and RXC (U1 pin 22) should be active. These signals should be mutually exclusive, and during receive you should have one or the other active, but never both of them active or inactive at the same time. If those steps don't correct it, it is at least a good start. Get back to us with the results. 73, Don W3FPR -Original Message- I am hoping someone can point me in the right direction here. My SSB board seems to have developed a problem. TX is fine but RX is really down. Even stations who would normally peg the S Meter barely register. If I remove the board and jumper the 2 connectors, the receiver springs into life. I have checked continuity on the torroids and checked the pin diodes (in circuit with the diode position on my DMM) and all seems to be well. Voltages on U1 appear to be ok but I am getting a small reading on some of the pins that should read zero (in the order of 150mV) Any ideas chaps? Ian ___ 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
RE: [Elecraft] K2 QSK On OFF and Auto Detect
ADeT works great for most of us who use it. A few folks have had issues with it, maybe diode tolerances or keying style. Anyhow, you can turn it off. Only users with problems typically post on the reflector. I, and all the others successfully using ADeT often remain silent. To sacrifice ADeT for something only one user needs would be foolish (in my opinion). Dan / WG4S / K2 #2456 snip Get rid of the auto detect from memory, then a few things really worthwhile could be added.. :Such as QSKdefaulted to Off On Turn On, Yes or No. /snip ___ 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] Does KX1 have CW spot?
Hi all, I have a K2 and use the CW spot function a lot to zero beat the signals I want to work. Is there a way to zero beat signals with the KX1? I am thinking that it can be done because of the CW announce function but would like to know how KX1 owners zero beat without transmitting. Steve, W2MY -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.11.3/423 - Release Date: 8/18/2006 ___ 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
Re: [Elecraft] K2 QSK On OFF and Auto Detect
Ouch! I use Auto-Detect all the time when contesting with the K2 and it works flawlessly for me! Please don't tamper with it! Frankly, QSK On/Off doesn't do anything for me. If space could be found for the code, I'd prefer to see the ability to assign a different MODE to each VFO and have the ability to do it on a per-band basis - to me that would be really worthwhile! 73 es gud dxing -- Don N4HH (. . . something about the eye of the beholder seems appropriate here . . .) W7IS Wrote: SNIP The necessary space in memory could be made available by dropping the Auto-Detect feature. That feature is buggy anyway. Get rid of the auto detect from memory, then a few things really worthwhile could be added.. :Such as QSKdefaulted to Off On Turn On, Yes or No. SNIP Frank W7IS ___ 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
RE: [Elecraft] Re: Tokyo Hy-Power QRP Rig
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Swartz - WA6HHQ, Elecraft Subject: Re: [Elecraft] Re: Tokyo Hy-Power QRP Rig What K3? We certainly have not announced anything like that. We're busy making and shipping K1s, K2s and KX1s. :-) ^^^? What? No amplifiers? Steve Aa8af I believe Wayne was comparing the K2 to this rig. It looks like it would be a step backward for us to head its direction. 73, Eric WA6HHQ - ___ 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
Re: [Elecraft] tokyo high-power whatever it is
sorry, but there really is no limited supply of crude oil, it's a controlled market. Remember Enron?? The rest, I agree with you. Ron, wb1hga Bob Robertson wrote: BUT There's a limited supply of crude oil, and there's a somewhat limited number of potential customers for the existing Elecraft product line. Some people aren't interested in a KW linear, and that includes me. Some aren't interested in the transverters. Some people build for the challenge and/or pride of having done it by myself. Some don't backpack preferring to work from inside air conditioned rooms (it was 103 yesterday). Not everyone is going to buy one of everything, if for no other reason than lack of . snip ___ 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] For Sale: K2 w/options - Serious Offers Considered
All items sold except the K2 below. Thanks for the responses. Here's the details: My father (K6AXS ex: KE0PG, WA0UMR now SK) built this K2 and options in 2002. He became a SK in early 2003. I had the best intentions to use it and subsequently bought additional Elecraft kits and a used KAT100, all of which I have hardly touched. I am just not using it and don't see getting back to it in the near term. Note: I will guarantee this rig to work to spec. If you find anything wrong with it I'll either refund your money or make it right by agreement. If you want references, let me know. K2 - SN 2744 (original invoice included) Built in 2002. My father sent it to Elecraft in Oct., 2002 for a problem. Elecraft repaired and aligned the rig. (I never heard what the problem was). I also have the receipt for the repair. Construction is clean, rig works great. Included options w/K2: - KSB2 SSB - Noise blanker - Finger Dimple for tuning knob The original manual is included, as is some errata sheets, etc. I also have a Nifty Quick Reference Manual for the K2 I'll throw in. That alone was about $20 or so and is an excellent reference. I ordered the K2 MCU and IOC firmware upgrade 2.04 (not installed) and SSB FW upgrade 1.08 (not installed) and will include them. NO power supply included. Note: I originally had the Heil mic listed with it but sold it separately and lowered the rig price. Sell for: $730 + ship w/insurance from 68046 SERIOUS OFFERS CONSIDERED! But please don't lowball me.. Email me at: [EMAIL PROTECTED] or call me at (402) 677-6936 Thanks, Charlie K0CKH ___ 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
RE: [Elecraft] KXAT1 with dipole
Dan, FWIW, at home I run my KX1 into a trapped 40 meter dipole (only 38ft. long) that is resonate around 7.040. I have a HI-Q 1:1 balun installed and have 75ft of feedline. The dipole is a flattop running NE to SW up about 40 ft. I have worked Alaska and NM and AZ and Southern California to mention just a few of my QRP contacts. I also run 13.8 watts into the unit at home. On the KX1 it shows a .5 Volt drop to 13.5. I have the internal tuner for the KX1 installed and I set it for CAL mode and I get 4+ watts and 1.0 SWR out of it. I can work up to 7.058 and down some with switching to Tun mode. I also run the unit outdoors into long wires (usuually 28 ft with counterpoises) and use the TUN mode and get very low SWR readings and perhaps a half watt less power. The reduction in power might be attributted to the lower power into the unit. I use a small 2800AH 12 volt batter that charges to about 13.5 and delivers at least 12 volts by the time I use it in the field. Jack Regan, AE6GC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dan Presley Sent: Tuesday, August 22, 2006 12:13 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KXAT1 with dipole I was out in the woods of Oregon today (up by the coast range town of Jewell) with my KX 1 and a few different antennas. I used a long wire for a while, but then for the heck of it I set up a 40M inverted vee with my portable mast. The KXAT1 had no trouble with the long wire (and counterpoises) bringing it right down to 1:1, but no such luck with the dipole ( cut to resonate on 40, and fed w/RG 174).I've used this antenna a bunch w/ the K2 and it's pretty much a 1:1, but when using the KX1 atu I got around 9:5 SWR! So, I promptly forgot how to bypass the tuner (until I got home and re-read the manual;set it to 'CAL':).But,also in the manual it states that it'll match most coax type dipoles, etc.Elsewhere it's stated that it won't match a half wave length,but I wasn't clear if that's only for a half wave end fed.I'll bet it's the same for a resonant dipole as it's a ground independent half wave, but maybe someone who has come up against this before can clarify as far as the tuner is concerned. I usually bring a separate antenna 'dipper' just to check the antenna in case there's a short or bad coax,etc., but that got left behind. Just for reference, I use the lightweight dipole kit from N2CX with a nice sealed center insulator and RG 174 (I know it's not the most efficient, but for a short run it's fine and very lightweight). I'm still trying to find more of the type of wire he used in there-it's springy yet has a great slick and tough coating which holds up well in trees, etc, It's also a light yellow in color so it blends nicely.N2CX quit making these kits a while back and ran out of that wire.The 'Wireman' sells some similar stuff,(524?) but it's still not the same. Any thought appreciated on the tuner-I'm trying to get as much outdoor radio time in before summer ends:) -- Dan Presley-N7CQR-Portland, Or QRP-L #502 ARS #71 [EMAIL PROTECTED] ___ 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 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
Re: [Elecraft] K2 insensitive on 20...or is it?
Folks, Found another must read tutorial on propagation. It is a paper presented by Paul Harden, NA5N at FDIM 2005 (QRP ARCI Event). Paul is the Propagation Guru in Residence on the QRP-L list. You can find Paul's presentation here: http://www.qrparci.org/mambo/pdf/FDIM81.pdf IMHO if you read only one paper about propagation, this should be it. Enjoy. 73, Rod Ai7NN On 8/21/06, Rod Ai7NN [EMAIL PROTECTED] wrote: Folks, Found a few more good HF Propagation primers: ... ___ 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
Re: [Elecraft] KXAT1 with dipole
You don't mention on what band you were trying to get a match... 40 meters? If so, I can relate that once in a while, my KXAT1 seems to get stuck in the sense that I can't get a match even when it's a easy scenario - such as resonant antenna fed with 50 ohm coax. I've learned that by using TUNE at some point of the band considerably removed from my initial freq, the KXAT1 will snap out of it, and get a nice match. Returning to the original freq and using TUNE again results in a good match, and all is well. It happened just this past weekend... I went into the field and put up my nice portable 20 m ground plane vertical, which presents a nearly perfect match to coax, but couldn't get a match with the KXAT1 at 14.060... odd. After checking connections, etc. I simply moved to 14.200 and got the usual good match in just a few clicks of the relays. Returned to 14.060 and all was well, I could re-tune at will without trouble. It happens rarely, and I've always been able to recover by shifting freq temporarily - or once, by tuning into a dummy load. I've checked by KXATI construction and alignment several times, seems to be ok.My suspicions center on the SWR bridge and nulling, but usually it works just fine. Maybe I'll find a cold solder joint some day if I keep looking. RC On 8/22/06, Dan Presley [EMAIL PROTECTED] wrote: I was out in the woods of Oregon today (up by the coast range town of Jewell) with my KX 1 and a few different antennas. I used a long wire for a while, but then for the heck of it I set up a 40M inverted vee with my portable mast. The KXAT1 had no trouble with the long wire (and counterpoises) bringing it right down to 1:1, but no such luck with the dipole ( cut to resonate on 40, and fed w/RG 174).I've used this antenna a bunch w/ the K2 and it's pretty much a 1:1, but when using the KX1 atu I got around 9:5 SWR! So, I promptly forgot how to bypass the tuner (until I got home and re-read the manual;set it to 'CAL':).But,also in the manual it states that it'll match most coax type dipoles, etc.Elsewhere it's stated that it won't match a half wave length,but I wasn't clear if that's only for a half wave end fed.I'll bet it's the same for a resonant dipole as it's a ground independent half wave, but maybe someone who has come up against this before can clarify as far as the tuner is concerned. I usually bring a separate antenna 'dipper' just to check the antenna in case there's a short or bad coax,etc., but that got left behind. Just for reference, I use the lightweight dipole kit from N2CX with a nice sealed center insulator and RG 174 (I know it's not the most efficient, but for a short run it's fine and very lightweight). I'm still trying to find more of the type of wire he used in there-it's springy yet has a great slick and tough coating which holds up well in trees, etc, It's also a light yellow in color so it blends nicely.N2CX quit making these kits a while back and ran out of that wire.The 'Wireman' sells some similar stuff,(524?) but it's still not the same. Any thought appreciated on the tuner-I'm trying to get as much outdoor radio time in before summer ends:) -- Dan Presley-N7CQR-Portland, Or QRP-L #502 ARS #71 [EMAIL PROTECTED] ___ 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 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
RE: [Elecraft] KXAT1 with dipole
Dan wrote: I was out in the woods of Oregon today (up by the coast range town of Jewell) with my KX 1 and a few different antennas. I used a long wire for a while, but then for the heck of it I set up a 40M inverted vee with my portable mast. The KXAT1 had no trouble with the long wire (and counterpoises) bringing it right down to 1:1, but no such luck with the dipole ( cut to resonate on 40, and fed w/RG 174).I've used this antenna a bunch w/ the K2 and it's pretty much a 1:1, but when using the KX1 atu I got around 9:5 SWR! --- You should not have had any trouble with a center fed dipole, Dan. The issue with the KX1 ATU, as with any ATU, is impedance extremes. Because of the limited number of inductors and capacitors that could be fitted into the tiny space available in the KX1, it has a more limited tuning range than any of the other Elecraft tuners. The end of a dipole presents a very high impedance, possibly in the thousands of ohms. At the other extreme, a very short antenna will present a very low impedance, often less than an ohm. Actually, end-fed short antennas often tune up more easily because they are working against ground and typically Hams have lousy RF grounds G. Even with several radials the ground impedance will likely be in the tens or, more likely, the hundreds of ohms. That's in series with the antenna so what the tuner is matching is a total impedance of perhaps a hundred ohms or more. The fraction of an ohm that the antenna represents is just part of the total. It's also why such antennas have a very, very low efficiency: often less than a few percent. In your case, I'd suspect you had an unlucky length of feed line. Unless the SWR is truly 1:1 on that feeder, something that is almost never achieved in practice, the feed line acts like a random impedance transformer. I suspect you got unlucky and the combination of the effect of surrounding objects, antenna length, feeder impedance and feeder length all added up to an impedance the KX1 ATU couldn't handle. Adding a few feet of feed line will usually fix that. Another possibility is a short or open, as you suggested. Ron AC7AC ___ 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
Re: [Elecraft] KX1 ATU is resetting from TUN to CAL by itself
Hi David and the group, I am on my way to ruling things out as to the source of the bug I am seeing: 1) I can make it happen with a commercial power supply and dummy load. The power supply has nothing homebrew about it, and I checked that the plug fit correctly into the KX1. 2) I took the internal batteries out while testing to rule out that the plug was bad and the power was intermittently reverting back to the 9V internal. I did not see anything reset or power cycle, just the TUN-CAL bug described earlier. 3) When the rig does automatically go from TUN to CAL when I transmit, if I turn the rig off, and then turn it back on, it goes back to TUN, with the correct L and C values from before the glitch. If I purposely turn the ATU to from TUN to CAL and then turn the rig off and on, it stays in CAL mode, as expected. This leads me to believe it is not a problem with the MCU going to a bogus state, but a glitch in a relay control line that is causing a relay to flip. 4) Similar to 3, when I see it switch from TUN to CAL on a transmit, and I switch bands, and then switch back to the original band, the ATU state returns back to the correct TUN state with the correct L and C values. 5) I re-soldered all the caps on the ATU board and any other connections that looked suspect. No change. My next step is to try the add'l bypass caps on the relay control lines, as Wayne suggested. I'm leaving that till last to see if I can pinpoint the cause of the problem before adding extra hardware to mask it. David, G4DMP, thanks for your feedback on the good result from adding the bypass caps. That encourages me that this will solve (mask) the problem. Thanks to all who sent me suggestions so far. 73, Mike N9OHW --- David Pratt [EMAIL PROTECTED] wrote: Hello Mike - I had a similar problem a while ago and Wayne suggested fitting some bypass capacitors in various places around the processor on the ATU board. Unfortunately I am unable to get to either the information or the rig at the moment as the contents of the shack are in storage due to building repairs. In my case, during an over while I was transmitting, the KX1 started retuning the antenna and ended up with a very low power and a high SWR. Fitting the capacitors as Wayne suggested totally cured the problem. 73 David G4DMP In a recent message, Michael Madden [EMAIL PROTECTED] wrote ... I took the KX1 out yesterday for more field testing. This time, I wrapped with a torroid the 6 unshielded lead from the external battery holder. The idea here was that RF was getting into the 6 battery lead and somehow the dirty DC was tripping the ATU controller. Well, at first, it seemed like the problem was solved. But after about 1 hr of having the KX1 on, I started getting the problem again. (The problem with the ATU switching from TUN to CAL by itself when I start transmitting.) This time, I only saw it on 30M. But it was intermittent: when it started happening, I shut the rig off, turned it back on, switched bands, and then I wouldn't get it for a while. ___ 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 __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ 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
Re: [Elecraft] tokyo high-power whatever it is .................
G'day, snip How about a 20/25 amp noise free switcher PS and an external amplified speaker in a single EC2? snip First class idea. Also I would like to make my nearly annual request for A/B VFO mode retention. The lack of this facility is a real pain in a multi mode contest. Regards, Mike VP8NO ___ 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] ANCHORS AWAY !!!
It's time to find a new home for many of the Boatanchors that I haven't used in quite a while and probably never will. Of course, I'll probably regret this once they're gone, but it seems like they deserve to be used more than I'm using them. So here goes... FOR SALE: DX-100B ($200 - too heavy to ship) DX-35 ($75 + shipping) DX-20 ($65 + shipping) HQ-170 ($175 + shipping) VIKING RANGER ($250 + shipping) GLOBE CHIEF 90A ($150 + shipping) VIBROPLEX SINGLE LEVER PADDLE ($50 + shipping) Photos will be on www.k9ew.net this evening. Please contact me Off-List if you're interested. Tnx es 73, ed - k9ew ___ 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
Re: [Elecraft] ANCHORS AWAY !!!
VIKING RANGER ($250 + shipping) I or II? - david a. belsley professor of economics ___ 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] 5703 is here!
K2 5703 is here! Got it inventoried and was missing just 3 caps. I emailed Elecraft and I've already received a live response that the caps will be on the way tomorrow - very impressive. I got started on the control board already and got up through diodes and decided to have a brew and relax. I have to admit that I was getting intimidated during the inventory - man, there are a lot of parts and I haven't touched the accessories yet. Those will wait until the K2 is done. But once I started building I realized it's just a matter of putting parts on a board and if I take it slow and check my work sooner or later I'll have a neat little rig. 73, Bill NZ0T ___ 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 #5570 completed
Hello everyone, I'm happy to announce that K2 # 5570 is up and running. The build went without a hitch, and everything is working as it is supposed to. What an amazing little rig! I took my time and savored each step along the way. Actually, this is my second K2. Currently it has the KSB2, KNB2, and K160RX options installed. I have the KPA100 and KDSP2 on order. I guess that makes me an Elecraft junkie for sure. 73, John, W2GW K2 #5570; K2(100) #4970; K1 #2105; KX1 #1258; KAT100; T1; etc. ___ 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
RE: [Elecraft] Does KX1 have CW spot?
Steve, Well, if the KX1 had all the features of the K2, it would likely be the size of the K2 as well. There is no CW Spot button on the KX1, so you will have to guess. You are not likely to be so far off that you miss QSOs because of it. I might point out that the N0SS Tuning SMD Indicator is usable in the KX1 see www.n0ss.net . 73, Don W3FPR -Original Message- Hi all, I have a K2 and use the CW spot function a lot to zero beat the signals I want to work. Is there a way to zero beat signals with the KX1? I am thinking that it can be done because of the CW announce function but would like to know how KX1 owners zero beat without transmitting. Steve, W2MY ___ 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
RE: [Elecraft] Alignment Test II
Don, thanks for the help, at least I think we are getting close to solving this mystery to me. I can converse with you on tubes, but this solid state stuff is new to me. Shows you how old I is. Pin 1 of U1 has 6 volts present and will not go to zero as you suggested. Pin 3 of U1 reads zero. As you indicated that is my problem. Following the steps in the manual and your advice I was able to get the high reading of 12101.18 and the low 12091.42. The following voltages are: U6, Pin 1 high 7.64v and low 11.4 microvolts (?); U6 Pin 3 high 4.06v and low 11.4 microvolts. I measured Pin 20 of U6 to be 6 volts. I lifted R19 and the readings were 4.08 before and 7.64 afterwards. I removed the thermistor board and checked the resistors and found no errors. I examined the board around the thermistor and found no solder bridges as you suggested I might have. Anyway, I think you are about to resolve my issues to which I appreciate. Dwight W4IJY K2 #4766 -Original Message- From: Don Wilhelm [mailto:[EMAIL PROTECTED] Sent: Monday, August 21, 2006 10:32 PM To: C Dwight Baker Subject: RE: [Elecraft] Alignment Test II Dwight, The real problem is that U1 pin 1 is not going to zero. Now take a tiny step to try to discover the cause - do the same test of the PLL range (you can ignore the frequencies for this), but check the voltage at U6 pin 3 when the BAND+ button is tapped and also when the BAND- button is tapped. We want to see the voltage at pin 3 go from about 4 volts to about zero volts. If you do get the 0 to 4 volt swing at pin 3, then the firmware and DAC are doing the job properly, you will find the problem on the thermistor board, and the most likely is a solder bridge between pins 5 and 6 - the pads get quite close to each other there and a solder bridge is easy to create. The 0 to 4 volt swing at U6 pin 3 should make the voltage at U6 pin 1 swing from 0 to 8 volts if the resistors in the op amp circuit (mainly the thermistor board) are correct. If you need to convince yourself that the pin 1 output is not being loaded down, just lift one end of R19 and repeat the test. U6 should have twice as much voltage on pin 1 as is put onto pin 3 when all is well with the resistor network. 73, Don W3FPR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of C Dwight Baker Sent: Monday, August 21, 2006 8:52 PM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] Alignment Test II Don, I followed your suggestions and I am still at the same place I started. I began by following the schematic as you suggested and marked each component as I verified the correct values and type. I found no errors (at least I didn't but it doesn't mean I erred again). It appears I had a solder bridge between pins 4 and 5 on U6. I replaced D16 veractor MV209 and did not have another D17 ISV149 so the old one is still there. The readings remained virtually the same as before. The voltages at U6 pin 1 were as follows: High 12103.15, voltage 7.61; low 1209.03, voltage 3.74. Pin 8 of the thermistor board was 7.97 and pins 6 and 7 measured 3.96. Pin 1 measured 7.64. The line voltage at the power plug was 14.3 volts. I am curious why the voltage on the lower reading did not go to near zero. Would Q19 (J310), D17 be faulty and what effect does U4 have? I appreciate your time for leading this BOOF (burnt out old f-rt) through the dark. Thanks again, Dwight W4IJY K2 4766 -Original Message- From: Don Wilhelm [mailto:[EMAIL PROTECTED] Sent: Monday, August 21, 2006 9:17 AM To: C Dwight Baker; elecraft@mailman.qth.net Subject: RE: [Elecraft] Alignment Test II Dwight, Don't be concerned about the setting of C22 until after you have finished the entire build - just set it to mid-position for now. You will want to re-do CAL PLL and CAL FIL after you are done with the 4 MHz oscillator set precisely to achieve good dial calibration. The K2 does not use the 4 MHz oscillator on a real time basis, only during CAL PLL and CAL FIL operations. Now in to your problem. Yes, your PLL high and low frequencies are too high and the range is too small. Turn your manual to the back and find the schematic for the RF Board - sheet 1. Then find the area in the left upper corner marked PLL Reference Oscillator. Check all the components associated with that circuit, especially the capacitors, varactors, and inductor L31 for proper values and make certain they are in the correct holes. Re-verify that D16 and D17 are correct - D16 is the larger bodied varactor and D17 is the smaller. After verifying the components above, go back to CAL FCTR with the probe in TP3, tap the BAND+ button and read the high frequency, then measure the voltage at U6 pin 1 (it should be near 8 volts). Then tap the BAND- button and read the low frequency and measure the voltage at U6 pin 1 (now should be near zero volts). Did you obtain a correct
RE: [Elecraft] Does KX1 have CW spot?
Since the one single channel DDS is used for transmit and receive, and it is bumped in frequency a bit for the required offset between the two modes, it is hard to do a spot function since that small low power DDS chip only does one frequency at a time. -- Alan wb6zqz -Original Message- Hi all, I have a K2 and use the CW spot function a lot to zero beat the signals I want to work. Is there a way to zero beat signals with the KX1? I am thinking that it can be done because of the CW announce function but would like to know how KX1 owners zero beat without transmitting. Steve, W2MY ___ 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
