[Elecraft] KX1 s/n 1101 up and running - How Sweet It Is!
WOW... felt just like my first Novice QSO (a zillion years ago)! Everything worked perfectly and as advertised first time! Plenty of RX sensitivity and 4-watts output on both 40 and 20 meter bands. 0500z, First QSO with the KX1 was up the coast to Washington state, I answered a CQ - 599 + 20db report given on my dipole - WOW, conditions must be good, I thought. 15 minutes later, I dropped over to 20m and worked V73NS for a 569 report (he was 589). Then found 7K3QPL calling CQ and gave him a shout - 1 call and a 569 report from Japan - I've got a 2 element beam up at 50ft. Now gonna build the ATU for this little bad boy! Watch out for me in the Sparton Sprint next month - Skinny division! (I just had to brag, you guys!) de Jerry/k6iii KX1 s/n 1101 San Jose, CA ___ 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] SMD-based kits
Personally I'd like to see things go in the other direction, and have kits using tubes. It's nostalgia I suppose, but who says radios have to be state of the art?. When I was young I used to drool over Heathkit catalogs, but I could never afford to buy the kits in those days. But some of my earliest radios were tube-based, and there is something intrinsically satisfying about a big, solid radio made with vacuum tubes, that today's tiny microprocessor based solid state radios just can't hope to emulate. Plus, they would be easier to build for those of us whose eyes are less sharp and hands less steady... The only thing that stops me building the only avaliable tube-based radio kit, an HF linear, apart from the price, is the havoc that running that amount of power would cause with my indoor antennas. 73, -- Julian, G4ILO G4ILO's Shack: http://www.tech-pro.net/g4ilo JS [EMAIL PROTECTED] wrote: Shall we back to basic? One of the advantages of kits from Elecraft is 'without' SMD stuff for the 'normal' skill builders. I consider myself is a 'normal' skill builders though I can handle SMD. Without SMD, most of elecraft kits can be handled by simple and easily avaliable tools. [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
Re: [Elecraft] Re: SMD-based kits and retirement [not!]
In a message dated 20/04/05 06:06:43 GMT Daylight Time, [EMAIL PROTECTED] writes: Don't worry -- leaded parts aren't going away anytime soon. We still have access to every part we designed into the K2 over five years ago. Reply: - Leaded parts may not go away, but may be increasingly difficult to obtain. Some types of IC are a case in point where the DIL type are getting very difficult to source and new types of devices are only available as SMD. There is a way around this in adapting a similar SMD IC with a DIL header adaptor, but this would become impractical if the number involved get too great. All volume manufacturers of equipment seem to be changed over to using SMD which can only hasten the decline. Have been involved recently with sourcing some CTCSS decoders for home constructed repeater logic systems. Very little is now available in DIL format as the radio manufacturers have only only used SMD for quite a long period. What is little still available in DIL commands quite a hefty price premium compared to the SMD type. More worrying if the information turns out to be correct is that Toko are reported in the UK PW radio magazine for May 2005 to be ceasing manufacture of through hole PCB type transformers and concentrating on surface mounted types. Unless another source is found of these components, this could make home construction though not impossible, a great deal more difficult. Bob, G3VVT ___ 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] SMD-based kits
I recently built an AA-908 Antenna Analyst which is a SMD-based kit. I have been in electronics since age 14 and have built hundreds of kits of all types including a K2 (#1107) with 100 watt amp. DSP, KSB, NB, 160 meter and various mods. This was my first SMD kit and while I had no particular problems. Now at age 66, I had to wear 3.5 diopter reading glasses and use an 8 power loupe to inspect solder joints (with SMD joints is not an exact term). A kit such as the AA-908 seems about the maximum complexity that a moderately skilled ham could expect to build and get working. Something as complex as a K2 would be a real challenge and repairs and mods will be a snarl. I suggest that SMD kits of the future will be about like building your own computer today. You would mount the completed circuit boards, hook up the cables, put on the knobs and put the lid on the box. 73 Allen KA5N ___ 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] Antenna Measurements
During the past two years I've been developing a vector impedance meter for evaluating antennas and it's also useful for discreet components or turned circuits, like traps. I'm offering these now on e_bay. The item number is: 5768437380. I'll be glad to address any questions, and suggestions for new features are always welcome. 73/ Bob - W5BIG ___ 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] SMD hand soldering ... (an RF construction lesson?)]
Hey, Wayne/Eric, are you listening? Sounds like a market for an Elecraft-quality kit to me. I'll buy one. Mark W5EZY Grenada MS --- There is really no need to have SMDs pre-soldered. The learning curve for hand soldering them is pretty quick and once mastered is rather fun. No drinking coffee while you're building though ;) 73, Kevin. KD5ONS On Tue, 19 Apr 2005 08:32:40 +0100, Robert Cochrane [EMAIL PROTECTED] wrote: Could be a kit, but I guess it would need a board with some SMD chips pre-soldered. Rob M0RAC __ Do you Yahoo!? Make Yahoo! your home page http://www.yahoo.com/r/hs __ 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] Re: SMD-based kits and retirement [not!]
Wayne wrote: We'll pre-install SMD replacements in future kits should that become necessary. If SMDs start to dominate, we'll up-level the kits so that the builder is still working with small units: individual modules that are small PCBs with some or all SMDs. That's the ideal solution, IMHO. I'd love to see a K1 or KX1 type rig with nearly all SMD componets...as long as *all* of these SMD components were completely pre-installed on the PCB. Kit parts inventory would be easier, opportunity for builder error would be greatly reduced, most importantly the kit could be completed much more quickly, etc. The builder would still get familiar with the circuit design and get to align the unit (i.e., all the higher-level skills part of the kit-building experience would still be present). The use on pre-mounted SMD components is the one outstanding design feature of MFJ's otherwise unremarkable Cub series of QRP rigs. It would be great to see something similar in an Elecraft rig, even before the scarcity of through-hole components forces it. I'd buy one, whether I needed it or not. 73, Mike / KK5F ___ 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] Important KAT2 errata...?
Hope I'm right here... or am I missing something? --- KAT2 antenna tuner instructions (Rev D, March 22 2001), page 12: The K2's AUX RF connector (RF-P6) is the same type used for the internal battery connector (RF-P3). To avoid damage to the ATU or to the K2, add some type of unique marking to RF-P3 and to its mating ATU connector (J7)... RF-P3 is not the mating connector for J7. It's RF-P6, not P3. RF-P3 is the connector for aux power. If you follow this instruction in the manual, you could lead yourself to plug the KAT2 into aux power, possibly doing the very damage that this step tries to keep you from doing. My errata sheet (D-1) supplied with my KAT2 does not list any corrections to this step, so I assume it is still in need of corrections. --Andrew, NV1B ___ 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: SMD-based kits and retirement [not!]
I built a couple of Elecraft transverters which use a mix of SMD and conventional parts. They came with the SMD components soldered in. For higher frequencies, some parts like chip capacitors are in fact better because they has less stray/component inductance. Yes, SMD are daunting but they can be done at home. There are plenty of advantages: - newer ics, and other devices, better designs - much much smaller finished products, a real plus for portable QRP gear The other are ways of mitigating the problems with size: 1. Throw in a few extra capacitors/resistors. This will only increase the cost by a buck or two and take the anxiety away. 2. Solder in the really fine pitch parts. 3. Change/reeducate the homebrewers to install parts by variety/type/value rather than component number. I have built a number of SMD / part SMD based projects (dsp10, iq-vfo, AA908) and actually find installing some parts, like 1206 resistors easier and faster with SMD rather than the leaded parts. Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Apr 20, 2005, at 9:45 AM, Mike Morrow wrote: Wayne wrote: We'll pre-install SMD replacements in future kits should that become necessary. If SMDs start to dominate, we'll up-level the kits so that the builder is still working with small units: individual modules that are small PCBs with some or all SMDs. That's the ideal solution, IMHO. I'd love to see a K1 or KX1 type rig with nearly all SMD componets...as long as *all* of these SMD components were completely pre-installed on the PCB. Kit parts inventory would be easier, opportunity for builder error would be greatly reduced, most importantly the kit could be completed much more quickly, etc. The builder would still get familiar with the circuit design and get to align the unit (i.e., all the higher-level skills part of the kit-building experience would still be present). The use on pre-mounted SMD components is the one outstanding design feature of MFJ's otherwise unremarkable Cub series of QRP rigs. It would be great to see something similar in an Elecraft rig, even before the scarcity of through-hole components forces it. I'd buy one, whether I needed it or not. 73, Mike / KK5F ___ 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] SMD-based kits
Hi I remember a time when PC boards were just becoming popular and the cry was how are you going to work on that stuff The same with first transistors, and then IC's. As the technology changes the building and troubleshooting techniques will follow. It may look difficult now because we are not as familiar SMD parts as through hole. I really would not want to build something like a hand wired chassis with 10 or 12 tubes and no PC boards (although I have done it). Some day we all may look back at building a through hole kit with all the lead bending, flush cutting and flipping the board over to solder the part and wonder how we did it and say I would not want to do THAT any more. Don Brown KD5NDB ___ 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] ECN/30 Tomorrow - 10.107.2 @ 0100z
Just a quick reminder that tomorrow evening (Thursday in the Western Hemisphere) we will meet again for another round of ECN/30. This will be my last 'bachelor' edition as next week is the wedding rehearsal. Last week, we had a great turnout (I think 5-6), and I was ready to post my net notes to the list, but during the efforts to keep the house tidy, they seem to have been misplaced (I need to start keeping my notes 'in' my notebook). Thank you all who checked in, and I look forward to all of those that will be checking in tomorrow night. 73, Daniel / AA0NI ___ 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] KX1 - Normal position of the AF gain control?
Hi. I was aligning my receiver yesterday (Phase II). I noticed that the AF gain seems to be exponential, which is to say that rotating it from 200 degrees (fully left rotated) up through 0 degrees (halfway) produces only a little bit of volume increase. Rotating from 0 degrees to 90 degrees brings the volume up to what I would consider a normal level, then from 90 degrees to fully rotated to the right causes a very noticeable increase in volume. So my KX1 will have the volume control 3/4 rotated (pointing at about 110 degrees) most of the time. Is that normal, or perhaps my headphones were of the wrong impedance? Send instant messages to your online friends http://uk.messenger.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
[Elecraft] Peaking the KX1 ?
Hi. I was peaking my KX1 according to the phase II alignment instructions when I discovered that the trimmer capacitor can be turned right through 360 degrees. My question therefore is... how much should you turn it? Does it make any difference if you go through 360 degrees more than once? Can you damage it by turning it too many times? Or if you turn it through ONE 360 turn and hear a couple of peaks, choose the biggest peak, is that the procedure complete? Thanks, Martin. Send instant messages to your online friends http://uk.messenger.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
[Elecraft] KX1 alignment - don't peak a birdie!!
Hmm, Just in case others can benefit from my own stupidity: The manual says hook up headphones, power and an antenna and go find a weak 20m signal, and then peak it up with the 20A and 20B trimmers. So I start tuning around at 11pm and the band is closed, so I decide to look for some QRM and peak up on that. I come accross a strong CW signal around 14.066 and I start fiddling with 20A and 20B. I can peak it with 20B but 20A doesn't make any difference at all. OK, I figure (from the manual) that maybe the AGC is working on it, so I go in search of another weaker signal. Great, found one. Again, 20A and 20B are making no difference. So I pull the antenna out. Signal is still present. Oops! It's an internally generated signal. Back to 14.066 ... that's still there too :) Ah, well. The moral of that story? If you're using a QRM signal (ie. a CW tone that may not be external, ie. it's not morse code), then disconnect the antenna to make sure it's not locally generated. Now both 20A and 20B can peak it up! Oops. Martin. Send instant messages to your online friends http://uk.messenger.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
[Elecraft] KX1 Uncalibrated S meter - only showing one LED bar - normal?
Hi. I have not yet calibrated my S meter but I noticed that when I tune in a really strong 40m CW morse signal that the S meter is only showing 1 intermittant bar, same as for weak signals. I even have this one intermittent bar when there are no signals present. I'm wondering if there's a problem with the AGC, or is it normal? I'm using about 10m or wire as the antenna. Thanks, Martin. Send instant messages to your online friends http://uk.messenger.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
[Elecraft] K2 Filters
I would like to know if adding a DSP unit to the K2 will make the KAF2 audio filter obsolete, or if they are used together ? Also I am curious what others think about the following, starting out with a K2, which do you think you would add next , the DSP unit or the 100 W option ? Just got my hands on a new K2 so building should start some time in the next few weeks. Thanks, Jim Obsolete ___ 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] SMD-based kits
Don't knock tubes. My first kit was a Harmon Kardon stereo amplifier with lots of tubes and no PC baord. It was great fun. I also built Dynakits and Heathkits with tubes. There's nothing like the smell and glow of vacuum tubes to warm your heart. Now I build lots of gear with SMD parts, and I can say that almost all the good chips are SMD now. Increasingly, staying with thru-hole parts not only costs more, it limits performance. I have no problem with SOIC parts, but the more popular SSOP and TSSOP parts are almost impossible to deal with unless you use some trick like a toaster oven to install the parts prior to other assembly. I think Elecraft would do well to pre-install SMD parts whenever performance would be enhanced. I know it is an inventory problem in terms of having a bunch of pre-assembled partial boards sitting on the shelf, but it gives much more flexibility in terms of circuit design and performance, and probably doesn't cost any more when you take into account the cheaper SMD parts cost. Larry N8LP Don Brown wrote: Hi I remember a time when PC boards were just becoming popular and the cry was how are you going to work on that stuff The same with first transistors, and then IC's. As the technology changes the building and troubleshooting techniques will follow. It may look difficult now because we are not as familiar SMD parts as through hole. I really would not want to build something like a hand wired chassis with 10 or 12 tubes and no PC boards (although I have done it). Some day we all may look back at building a through hole kit with all the lead bending, flush cutting and flipping the board over to solder the part and wonder how we did it and say I would not want to do THAT any more. Don Brown KD5NDB ___ 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] Antenna Measurements
Very interesting new player in the antenna analyzer wars. And a great job on the operator's manual as well. It will be interesting to see what price develops on ebay.com. Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob - W5BIG Sent: Wednesday, April 20, 2005 5:38 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] Antenna Measurements During the past two years I've been developing a vector impedance meter for evaluating antennas and it's also useful for discreet components or turned circuits, like traps. I'm offering these now on e_bay. The item number is: 5768437380. I'll be glad to address any questions, and suggestions for new features are always welcome. 73/ Bob - W5BIG ___ 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] Antenna Measurements
Looks good Bob. Are you planning a two-port version where the DDS output and bridge/coupler input are brought out to BNCs for doing transmission measurements like measuring filters, etc.? Larry N8LP Bob - W5BIG wrote: During the past two years I've been developing a vector impedance meter for evaluating antennas and it's also useful for discreet components or turned circuits, like traps. I'm offering these now on e_bay. The item number is: 5768437380. I'll be glad to address any questions, and suggestions for new features are always welcome. 73/ Bob - W5BIG ___ 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] SMD-based kits
Toaster oven? My 19 year old son and I live alone. As a result there are a lot of strange melted substances draped over the heating coils in our toaster oven, but solder isn't one of them. Yet...are you serious or is toaster oven a slang word for some expensive SMD assembly equipment? Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Phipps I have no problem with SOIC parts, but the more popular SSOP and TSSOP parts are almost impossible to deal with unless you use some trick like a toaster oven to install the parts prior to other assembly. ___ 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] antenna analyzier
QTY? It looks like more than one is available? rc kc5wa EricJ wrote: Very interesting new player in the antenna analyzer wars. And a great job on the operator's manual as well. Eric KE6US - During the past two years I've been developing a vector impedance meter for evaluating antennas and it's also useful for discreet components or turned circuits, like traps. I'm offering these now on e_bay. The item number is: 5768437380. 73/ Bob - W5BIG -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.18 - Release Date: 4/19/2005 ___ 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 Filters
For a QRPer, adding a DSP would be like a small religious experience. Adding a K100 would be like converting to Satanism. DSP replaces AF. Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of wx9j Sent: Wednesday, April 20, 2005 9:41 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K2 Filters I would like to know if adding a DSP unit to the K2 will make the KAF2 audio filter obsolete, or if they are used together ? Also I am curious what others think about the following, starting out with a K2, which do you think you would add next , the DSP unit or the 100 W option ? Just got my hands on a new K2 so building should start some time in the next few weeks. Thanks, Jim ___ 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] SMD-based kits
Hi Not knocking tubes! In fact there are still some new audio gear around that have tubes. Some people think they sound better and musicians say they have a warmer sound (or is it just because the room is warmer). I also built several tube kits. I worked on many a tube stereo or TV in the mid 60's. I also worked as a lead tech for Tektronix for 5 or so years where I worked on many 500 series scopes with 30-40 tubes although my specialty was the 7000 series scopes. I was just saying I would rather not build any more hand wired tube type kits unless there is no other option (a high power transmitter for instance). Don Brown KD5NDB - Original Message - From: Larry Phipps [EMAIL PROTECTED] To: Don Brown [EMAIL PROTECTED] Cc: Elecraft Reflector elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 11:34 AM Subject: Re: [Elecraft] SMD-based kits Don't knock tubes. My first kit was a Harmon Kardon stereo amplifier with lots of tubes and no PC baord. It was great fun. I also built Dynakits and Heathkits with tubes. There's nothing like the smell and glow of vacuum tubes to warm your heart. ___ 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] SMD-based kits
Here's one link explaining it, there are others... do a Google search for more. http://www.beloev.net/gbvio.html Larry N8LP EricJ wrote: Toaster oven? My 19 year old son and I live alone. As a result there are a lot of strange melted substances draped over the heating coils in our toaster oven, but solder isn't one of them. Yet...are you serious or is toaster oven a slang word for some expensive SMD assembly equipment? Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Phipps I have no problem with SOIC parts, but the more popular SSOP and TSSOP parts are almost impossible to deal with unless you use some trick like a toaster oven to install the parts prior to other assembly. . ___ 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] SMD-based kits
Gentlefolk, Surface Mount is not that difficult even for old geezers like me with less than perfect eyesight. NORCAL did an SM kit as an introduction to the topic and I made that and it worked pretty well. I am half way through building a 23cm transverter kit from Kuhn Electronics which is all Surface Mount.Whilst the itsy bitsy components take some getting use to, a magnifier, a toothpick (for holding components down), a set of tweezers and a soldering iron with a tiny bit are all thats required (use a scrap motherboard, remove some somponents and resolder them). And a clean work surface. As usual practice makes perfect...and it helps a lot if the pcb is not too dense... In some respects SM components are easier to work with than leaded ones. No need to drill the PCB...lots of new components which dont have leaded versions...as you colonials say,,,its not a problem, its a challenge...and in years to come i think that there may not be any leaded components produced...so we will have to adapt, as hams always have, to use new technologies... Just my 50p s worth... Steve - Original Message - From: EricJ [EMAIL PROTECTED] To: [EMAIL PROTECTED]; 'Don Brown' [EMAIL PROTECTED] Cc: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 6:22 PM Subject: RE: [Elecraft] SMD-based kits Toaster oven? My 19 year old son and I live alone. As a result there are a lot of strange melted substances draped over the heating coils in our toaster oven, but solder isn't one of them. Yet...are you serious or is toaster oven a slang word for some expensive SMD assembly equipment? Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Phipps I have no problem with SOIC parts, but the more popular SSOP and TSSOP parts are almost impossible to deal with unless you use some trick like a toaster oven to install the parts prior to other assembly. ___ 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 -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.17 - Release Date: 19/04/2005 ___ 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: SMD-based kits and retirement [not!]
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of wayne burdick Sent: 20 April 2005 06:09 To: EricJ Cc: Elecraft@mailman.qth.net Subject: [Elecraft] Re: SMD-based kits and retirement [not!] Retire? Surely you jest. We're both in our forties. By the Wayne Aren't we all? :-) -Original Message- From: Sandy [mailto:[EMAIL PROTECTED] Sent: 20 April 2005 00:36 To: John A. Ross[RSDTV]; 'wayne burdick'; 'Elecraft Reflector' Subject: Re: [Elecraft] SMD-based kits I'll leave the SMD stuff to you younger guys with better eyesight than mine! No-one has called me a younger guy for quite a bit, thanks Sandy John time we'd want to retire, the retirement age would be in triple digits and social security won't be secure or sociable. We'll just keep designing cool stuff, and take our walkers to meetings. (Remember: old engineers never die; they just lose their scope.) Don't worry -- leaded parts aren't going away anytime soon. We still have access to every part we designed into the K2 over five years ago. We'll pre-install SMD replacements in future kits should that become necessary. If SMDs start to dominate, we'll up-level the kits so that the builder is still working with small units: individual modules that are small PCBs with some or all SMDs. The way to think of them is as the next level of integrated circuit. No one complains about parts on a chip. Bottom line: the kit experience isn't going away in our lifetime, whether or not everyone buys a second K2 ;) 73, Wayne N6KR On Apr 19, 2005, at 8:40 PM, EricJ wrote: I think that might hasten Wayne and Eric's retirement!! Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] We should all buy a spare K2 and put it in our attics. It may enable us to hasten our retirements a few years! --- 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 ___ 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] SMD-based kits
On Wed, 20 Apr 2005 12:25:50 -0500, Don Brown wrote: Some people think they sound better and musicians say they have a warmer sound (or is it just because the room is warmer). It is well known among audio professionals that the perceived warmth is nothing more than second harmonic distortion, AND the absence of much higher order products (the ear is far more sensitive to high order distortion, because they are less musical -- that is, higher musical intervals). You can buy studio signal processing products from a very well respected designer of mixing consoles that are simply second harmonic generators. The normal setting of the warmth control is at around 3-5%. Jim Brown K9YC ___ 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 Filters
On Wed, Apr 20, 2005 at 07:30:12PM +0200, Sverre Holm wrote: Also I am curious what others think about the following, starting out with a K2, which do you think you would add next , the DSP unit or the 100 W option ? If I read you right, your interest is in CW and not SSB, since you don't mention the KSB2 option. This is similar to my interests. I got my K2 up and running 2 months after I was licensed in 2001. It has taken me 3.5 years to upgrade to the KPA100 which I finished this winter, and the KAT100 which I finished this month. I had lots of fun with the basic QRP version, but then of course sun spots were more favorable some years ago. My impression from this list is that the KDSP2 is more useful for SSB than CW, altough opinions vary. I am still happy with the KAF2 and I don't have any plans to upgrade to a KDSP2 yet. I haven't used a KAF2, but the noise reduction function of the KDSP2 on CW is fantastic. 73, Bob N7XY ___ 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] SMD-based kits
Wow! This changes everything! SMDs look less and less scary almost every day. It's just a matter of a few new skills and the different tools. I knew I shouldn't have thrown that old toaster oven in my garage away! I just KNEW it! Thanks for the link. Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Phipps Sent: Wednesday, April 20, 2005 10:25 AM Cc: 'Elecraft Reflector' Subject: Re: [Elecraft] SMD-based kits Here's one link explaining it, there are others... do a Google search for more. http://www.beloev.net/gbvio.html Larry N8LP EricJ wrote: Toaster oven? My 19 year old son and I live alone. As a result there are a lot of strange melted substances draped over the heating coils in our toaster oven, but solder isn't one of them. Yet...are you serious or is toaster oven a slang word for some expensive SMD assembly equipment? Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Phipps I have no problem with SOIC parts, but the more popular SSOP and TSSOP parts are almost impossible to deal with unless you use some trick like a toaster oven to install the parts prior to other assembly. . ___ 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] Important KAT2 errata...?
Andrew wrote: Hope I'm right here... or am I missing something? Hi Andrew, Good catch! Yes, the first step on page 12 of the KAT2 manual is clearly in error, so an updated errata page would be appropriate! 73, Gary, KI4GGX K2 #4067 -- I am using the free version of SPAMfighter for private users. It has removed 409 spam emails to date. Paying users do not have this message in their emails. Try www.SPAMfighter.com for free now! ___ 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] Vacuum-tube Projects (WAS: SMD-based kits)
Check this out for a possibly upcoming tube kit: http://www.qsl.net/wb1gfh/hameco.html John Harper AE5X Portable QRP: http://www.ae5x.com - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 1:33 PM Subject: [Elecraft] Vacuum-tube Projects (WAS: SMD-based kits) Larry, N8LP, wrote: Don't knock tubes. My first kit was a Harmon Kardon stereo amplifier ___ 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] Vacuum-tube Projects (WAS: SMD-based kits)
Man oh man, I think this is the kit I've been waiting for! What a beauty!! Roland N5VWN - Original Message - From: John Harper AE5X [EMAIL PROTECTED] To: Ron D'Eau Claire [EMAIL PROTECTED]; 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 12:45 PM Subject: Re: [Elecraft] Vacuum-tube Projects (WAS: SMD-based kits) Check this out for a possibly upcoming tube kit: http://www.qsl.net/wb1gfh/hameco.html John Harper AE5X Portable QRP: http://www.ae5x.com - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 1:33 PM Subject: [Elecraft] Vacuum-tube Projects (WAS: SMD-based kits) Larry, N8LP, wrote: Don't knock tubes. My first kit was a Harmon Kardon stereo amplifier ___ 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] Vacuum-tube Projects (WAS: SMD-based kits)
How about the Glow Bug 40? http://www.glowbugkits.com/ I built one and it's lots of fun. Robert VE3RPF ___ 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] SMD-based kits
What would be really neat is sets of modules that are like block diagrams. Various mixers , fixed frequency oscillators, maybe a vackar VFO, DDS VFO, Tayloe detector, IF amps, detectors, mixers, etc. Publish all the characterization data (input and output impedance, various voltage requirements, etc.) along with them. Then you would be able to plug the bits together to make different types of transmitters, receivers, transverters, and such. Think of the mini module kits, but more variety. While I don't shy away from kit building, through hole or SMD, functional blocks would allow people like mmyself to more easily explore the design / engineering side of radio. Just a thought, 73, John AA2BN ___ 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] AA lithium batteries
For all you folks with Spartan Sprint or field rigs. 5-A continuous discharge would feed my ATS-3 very well ;) I could put 6 of them is series-parallel to work for quite a spell. Kevin KD5ONS (I am not affiliated with these folks. I am a computer/software engineer. BSCh/BSSE/MSEE) http://electronicproducts.com/ShowPage.asp?SECTION=3700PRIMID=FileName=hlap01.mar2005.html Lithium batteries deliver 15-A pulse and 5-A continuous discharge Specifically designed for applications requiring high power, long life, and extended storage capability such as military systems, automatic external defibrillators, and other remote and portable devices, the TLM 1550 lithium AA-sized batteries are presented as the first such devices to deliver pulses of up to 15 A with a 5-A max continuous load. Delivering 4.0 V with a total output of 2 Wh, the batteries provide the high power levels required by the latest products in an easily integrated industry-standard package size. Features include a self-discharge rate of less than 3% per year at room temperature, and an operating temperature range from –40° to 85°C. The glass-to-metal sealed batteries use nontoxic solvents, are nonpressurized, and can be shipped as nonhazardous material. (From $5 ea/large qty— available now.) Tadiran Batteries Port Washington, NY Information 800-537-1368 http://www.tadiranbat.com -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.10.1 - Release Date: 4/20/2005 ___ 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] SMD-based kits
At 05:21 PM 4/19/2005, wayne burdick wrote... That said, looking into my crystal ball I can see a time when home pick-'n'-place machines with AI-enabled vision systems become commonplace Is that a pre-announcement of a new kit? Where do I get in line? ___ 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] FORTH
There is at least one shareware program for Palm operating system that seems full featured. I use it for most all calculations no matter how simple. It just feels better than other calculators. N5LC On Mon, 2005-04-18 at 08:54, Chris wrote: Are there any decent modern RPN calcs? I had a much loved HP32SII but I lost it when I moved house and have not been able to find a decent replacement. I have soft RPN calc on my palm, but I like proper buttons to push. Chris - VP8BKF and it will pring 27! Every modern RPN calculator should come with a built in FORTH :). ___ 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
[Elecraft] K2-#4877-kc4eyf
K2-#4877 KC4EYF Here! I did it,she passed Alignment and Test, Part 3 All steps are ok here. After hours of slow steady work. Been just kinda tunning around getting to know this little k2 Thing. Thanks for any help i needed at this board ,Don was big help. Ok,Now i really want to get down to business with the 4 mhz oscillator with wwv or what ever. Been reading so many k2 email i forgot where i seen all those info email on really getting this thing on the money. Help me if you can,then ill proceed to install ssb and noise blanker and audio filter options. Thanks everybody for help. kc4eyf ___ 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] AA lithium batteries
They've got a number of cool batteries on that site .. see the 10V nominal 56AH pack? looks might small, and at 2%/yr self-discharge it would make a nice emergency battery .. de john/w1rt On 4/20/05, Kevin Rock [EMAIL PROTECTED] wrote: For all you folks with Spartan Sprint or field rigs. 5-A continuous discharge would feed my ATS-3 very well ;) I could put 6 of them is series-parallel to work for quite a spell. Kevin KD5ONS (I am not affiliated with these folks. I am a computer/software engineer. BSCh/BSSE/MSEE) http://electronicproducts.com/ShowPage.asp?SECTION=3700PRIMID=FileName=hlap01.mar2005.html Lithium batteries deliver 15-A pulse and 5-A continuous discharge Specifically designed for applications requiring high power, long life, and extended storage capability such as military systems, automatic external defibrillators, and other remote and portable devices, the TLM 1550 lithium AA-sized batteries are presented as the first such devices to deliver pulses of up to 15 A with a 5-A max continuous load. Delivering 4.0 V with a total output of 2 Wh, the batteries provide the high power levels required by the latest products in an easily integrated industry-standard package size. Features include a self-discharge rate of less than 3% per year at room temperature, and an operating temperature range from –40° to 85°C. The glass-to-metal sealed batteries use nontoxic solvents, are nonpressurized, and can be shipped as nonhazardous material. (From $5 ea/large qty— available now.) Tadiran Batteries Port Washington, NY Information 800-537-1368 http://www.tadiranbat.com -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.10.1 - Release Date: 4/20/2005 ___ 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] Using XG1 to measure feedline losses
I tested the idea tonight, and got some surprising results. I attached the XG1 to a 12 foot dipole, which I taped to the center of my 52 ft. loop (16 X 10 ft.) opposite the feedpoint. I used insulated wire, so there was not an electrical connection from the XG1 to the antenna, just wanted the dipole to couple with the loop. I could distinctly hear the 1 microvolt tone at 7.040 MHz. Weak but clearly there. So I turned it up to 50 microVolt to get a better signal to noise ratio, and hopefully highlight the differences between the two feedlines. I cranked the RF on my K2 all the way up, but left the audio at 9 o'clock to keep the signal from being too loud. I measured 9 millivolts AC at the speaker output. I then swapped out the 3/8 inch copper ladder line and attached 450 ohm window ladder line. I re-tuned the tuner to get a perfect match. I then re-attached the XG-1 (I left the two wires taped onto the loop, so there isn't a variable there) and turned it on. I was surprised to get a higher reading, 23 millivolts AC. That wasn't what I expected. I turned the XG1 down to the 1 microvolt setting and listened, and it was clearly louder and with a better signal to noise ratio than what I heard with the fat ladder line. So I swapped lines out again and tested the fat ladder line again. It was back down to the 9 millivolt AC level again... So, what did I conclude? Well, first of all, my fat ladder line wasn't run the same way as the original window ladder line was run. So when I swapped out feedlines, and re-routed the feedline, I changed two variables, and I assumed that my noticeably louder signal was because of the new fat feedline. When I did the test tonight, I routed the window line the same general way as the fat ladder line. Maybe my homemade ladder line, which I'm sure isn't 450 ohm, does not provide the tuner as efficient a match, since I'm measuring both feedline losses as well as the associated tuner losses when matching the antenna. And the total system is what really matters. So, I'll ponder this, and re-install the window ladder line, but with the new routing. My wife will be happy, as she wasn't thrilled to see the bigger hole in the (guest) bedroom ceiling, with two copper pipes running out down to my tuner. Over the past few years she has come to accept black window ladder line dangling from a hole in the ceiling. And I learned that the XG1 can be a useful tool to test a feedline/tuner setup. Vic KG4HTT On Tue, 19 Apr 2005 22:47:44 -0700 wayne burdick [EMAIL PROTECTED] writes: The XG1 can be connected to virtually any load without being damaged. However, if the load doesn't look like 50 ohms at 7.040 MHz, what it puts out may not be exactly 1 or 50 uV. Whether you'll hear even the 50-uV signal at any distance remains to be seen. Let us know how far away you can get and still hear it! 73, Wayne N6KR ___ 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] Vacuum-tube Projects (WAS: SMD-based kits)
What memories! My first Novice contacts (as WN8OSM) were with an Ameco AC-1 and a Heathkit HR-10. I had one Xtal on each of 80m and 40m. I kept working the same novice on 80m each afternoon, because she also was rock bound on that frequency. I kept wanting to meet her for an eyeball QSO, but it never happened. I graduated to a Viking Challenger and then got a Heathkit VF-1 VFO. The frequency agility was exhilarating after Xtal control. I still have the AC-1 and need to get it out and put it back on the air. I may have to get a 7040kHz Xtal. Thanks for the reminder. 73, Phil Shepard NS7P K2 #4635 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Roland Elvie Whitsitt Sent: Wednesday, April 20, 2005 1:04 PM To: Elecraft@mailman.qth.net; John Harper AE5X Subject: Re: [Elecraft] Vacuum-tube Projects (WAS: SMD-based kits) Man oh man, I think this is the kit I've been waiting for! What a beauty!! Roland N5VWN - Original Message - From: John Harper AE5X [EMAIL PROTECTED] To: Ron D'Eau Claire [EMAIL PROTECTED]; 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 12:45 PM Subject: Re: [Elecraft] Vacuum-tube Projects (WAS: SMD-based kits) Check this out for a possibly upcoming tube kit: http://www.qsl.net/wb1gfh/hameco.html John Harper AE5X Portable QRP: http://www.ae5x.com - Original Message - From: Ron D'Eau Claire [EMAIL PROTECTED] To: 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Wednesday, April 20, 2005 1:33 PM Subject: [Elecraft] Vacuum-tube Projects (WAS: SMD-based kits) Larry, N8LP, wrote: Don't knock tubes. My first kit was a Harmon Kardon stereo amplifier ___ 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 ___ 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] Using XG1 to measure feedline losses
I have been using my K2 for antenna measurements but the approach I have taken is to measure the AGC voltage and calibrate it against known sources in 10 db increments.The chip used for AGC has a linear region, or I should say linear with respect the db scale, and becomes non linear on the low and high signal level ends. In any case I would think this would be much better with regards to repeatability than measuring the speaker output. Regards, Brian n6iz [EMAIL PROTECTED] wrote: I tested the idea tonight, and got some surprising results. I attached the XG1 to a 12 foot dipole, which I taped to the center of my 52 ft. loop (16 X 10 ft.) opposite the feedpoint. I used insulated wire, so there was not an electrical connection from the XG1 to the antenna, just wanted the dipole to couple with the loop. I could distinctly hear the 1 microvolt tone at 7.040 MHz. Weak but clearly there. So I turned it up to 50 microVolt to get a better signal to noise ratio, and hopefully highlight the differences between the two feedlines. I cranked the RF on my K2 all the way up, but left the audio at 9 o'clock to keep the signal from being too loud. I measured 9 millivolts AC at the speaker output. I then swapped out the 3/8 inch copper ladder line and attached 450 ohm window ladder line. I re-tuned the tuner to get a perfect match. I then re-attached the XG-1 (I left the two wires taped onto the loop, so there isn't a variable there) and turned it on. I was surprised to get a higher reading, 23 millivolts AC. That wasn't what I expected. I turned the XG1 down to the 1 microvolt setting and listened, and it was clearly louder and with a better signal to noise ratio than what I heard with the fat ladder line. So I swapped lines out again and tested the fat ladder line again. It was back down to the 9 millivolt AC level again... So, what did I conclude? Well, first of all, my fat ladder line wasn't run the same way as the original window ladder line was run. So when I swapped out feedlines, and re-routed the feedline, I changed two variables, and I assumed that my noticeably louder signal was because of the new fat feedline. When I did the test tonight, I routed the window line the same general way as the fat ladder line. Maybe my homemade ladder line, which I'm sure isn't 450 ohm, does not provide the tuner as efficient a match, since I'm measuring both feedline losses as well as the associated tuner losses when matching the antenna. And the total system is what really matters. So, I'll ponder this, and re-install the window ladder line, but with the new routing. My wife will be happy, as she wasn't thrilled to see the bigger hole in the (guest) bedroom ceiling, with two copper pipes running out down to my tuner. Over the past few years she has come to accept black window ladder line dangling from a hole in the ceiling. And I learned that the XG1 can be a useful tool to test a feedline/tuner setup. Vic KG4HTT On Tue, 19 Apr 2005 22:47:44 -0700 wayne burdick [EMAIL PROTECTED] writes: The XG1 can be connected to virtually any load without being damaged. However, if the load doesn't look like 50 ohms at 7.040 MHz, what it puts out may not be exactly 1 or 50 uV. Whether you'll hear even the 50-uV signal at any distance remains to be seen. Let us know how far away you can get and still hear it! 73, Wayne N6KR ___ 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] Using XG1 to measure feedline losses
Vic, KG4HTT wrote: I tested the idea tonight, and got some surprising results. I attached the XG1 to a 12 foot dipole, which I taped to the center of my 52 ft. loop (16 X 10 ft.) opposite the feedpoint... I cranked the RF on my K2 all the way up, but left the audio at 9 o'clock to keep the signal from being too loud. I measured 9 millivolts AC at the speaker output. I then swapped out the 3/8 inch copper ladder line and attached 450 ohm window ladder line...I was surprised to get a higher reading, 23 millivolts AC. That wasn't what I expected. I turned the XG1 down to the 1 microvolt setting and listened, and it was clearly louder and with a better signal to noise ratio than what I heard with the fat ladder line. So I swapped lines out again and tested the fat ladder line again. It was back down to the 9 millivolt AC level again... You haven't described the tuner setup. You are absolutely right that you are measuring the combined system losses, not just the feedline losses. One BIG factor is whether you are using a balun in the system. I've yet to find a balun that isn't unpredictable and frequently lossy when used in a feedline with high reactance, that is any balanced feedline with an SWR much above 1:1, no matter the type. For just that reason I still use a link-coupled fully-balanced tuner when feeding my doublet with open-wire line. It takes me 30 seconds to change bands, but I've never seen any automatic system/balun combination that is better and many that I've tried are much worse. The losses in a balun all depend on just how high the SWR on the line is - that is, how much reactance is present. Thanks for sharing your results Vic! 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] Using XG1 to measure feedline losses
[EMAIL PROTECTED] wrote: I tested the idea tonight, and got some surprising results. I attached the XG1 to a 12 foot dipole, which I taped to the center of my 52 ft. loop (16 X 10 ft.) opposite the feedpoint. I'm not sure why you got the result that you did, but it's possible that the feedline picked up some xg1 signal in common mode. If you have an antenna analyzer like the MFJ-259B there's a simpler way to measure the total system loss: 1) Tune your loop for as close to 1:1 as you can get, using the antenna analyzer connected to the tuner input. 2) Then either short the end of the feedline or disconnect it from the loop. The SWR should now be Very High. 3) Switch the antenna analyzer to Coax Loss mode, if it has one! It will tell you what the loss is in db. If it doesn't have a loss mode (like the Autek VA-1), note that the measured impedance of the shorted or open line varies as you change frequency. Measure the MINIMUM impedance at the impedance dip closest to the frequency at which you want to measure the loss, and multiply it by 0.17 to get the loss in db. What happens is that if the feedline and tuner had zero loss, then you would get 100% of the forward power reflected from the short or open. But you don't, because some of the power is eaten up by losses in the feedline and the tuner. So the analyzer can compute the loss. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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
