[Elecraft] XV50 resistors
Just a quick question about the manual for the XV50 R23 on the RF board shows to use 100K in the parts breakdown and in the text it shows 120 ohm. I had enough 120 ohm resistors to fill all spot and ended up with an extra 100K. Which one is correct to use for R23. Thanks and 73: Jerry N0JRN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KBPF3 usefulness or effectiveness?
James I suspect that 7.5MHz is far too close to the existing 40m bandpass filtering for you to notice any difference between it and the KBPF3. I can't try it here as I only have the single receiver, but if you to look around 12MHz for example I expect you would detect a significant difference. 73 Stephen G4SJP K3 #980 On 28/12/2009 02:19, James Sarte k2qi@gmail.com wrote: Hello Elecrafters, When I assembled my K3 I installed the KBPF3 module in the sub receiver figuring that I'd use the sub for SWL. However, I was thinking about moving it back to the main receiver in order to take full advantage of the synchronous AM detection feature. What I noticed though was that I can't really seem to tell if the KBPF3 makes a difference when listening to out-of-band stations. For example, tuning around tonight I came across a strong SW station on 7505 KHz. Logic tells me that the sub receiver's AF output should be significantly clearer, perhaps louder, than that of the main receiver. Going back and forth between them doesn't seem to show any differences in perceived audio quality though. So, I'm curious now if there are any tests I can perform that would demonstrate the effectiveness of the KBPF3 module. Thank you for your valued input. Vy 73 de James K2QI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KBPF3 usefulness or effectiveness?
Thanks Dave - I had forgotten about the broadcast AM stations below 1 kc. I'll check that out. By the way (and this is addressed to Wayne), any chance sync-am can be applied to the sub receiver? 73 de James K2QI -Original Message- From: David Olean [mailto:k1...@metrocast.net] Sent: Sunday, December 27, 2009 11:08 PM To: James Sarte Subject: Re: [Elecraft] KBPF3 usefulness or effectiveness? I do know that it makes a big difference on the broadcast band. Tune in a station under 1000 kHz. It will be much louder on the antenna in jack on the KXV3 than on the main antenna jack. 7500kHz might not be far enuf away from the ham band to make much difference. I noted a big improvement on the BC band with the KBPF3 over that without it. Easy to check there with plenty of stations. Dave K1WHS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] RES: TX ON K3 - 2,8 kHZ ssb
Hi Thanks for the infomation Happy and prosper New Year 73 Oms ATILANO DE OMS PP5EG - PY5EG GADX ARAUCARIA DX GROUP -Mensagem original- De: Don Wilhelm [mailto:w3...@embarqmail.com] Enviada em: domingo, 27 de dezembro de 2009 12:06 Para: py5eg Cc: g...@elecraft.com; elecraft@mailman.qth.net Assunto: Re: [Elecraft] TX ON K3 - 2,8 kHZ ssb Oms, That is called ESSB mode and requires the 6 kHz filter. See the menu item CONFIG: TX ESSB in the manual. K4 Utility makes the filter setup easy. 73, Don W3FPR py5eg wrote: Hi Gary: I would like to know the procedures to transmit with K3 SSB with bandwith more than 2,8 Khz Thanks in advance Oms PY5EG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] XV50 resistors
Jerry - Don't confuse the list of RF board components with those for the front panel. You'll see that R4 and R5, among others, have different values on the RF board to those on the front panel. 73 David G4DMP In a recent message, n0jrn n0...@mchsi.com wrote ... Just a quick question about the manual for the XV50 R23 on the RF board shows to use 100K in the parts breakdown and in the text it shows 120 ohm. I had enough 120 ohm resistors to fill all spot and ended up with an extra 100K. Which one is correct to use for R23. Thanks and 73: Jerry N0JRN -- +- - - - - - - - - - - - - - - - - - - - -+ | David M Pratt G4DMP, Kippax, Leeds, UK | | K1 #1117; KX1 #0052; K2 #1583; K3 #0186 | +- - - - - - - - - - - - - - - - - - - - -+ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3?
Main RX: 2.7 2.1 400 and 200 Sub RX: 2.7 2.1 400 Use of the filters: Normal operation SSB: 2.7 (this filter is much wider than 2.7 but that's no problem in normal band conditions) Contest operation SSB: 2.1 (this is needed when the band is crowded) Normal operation CW: 2.1 , listening on 500Hz BW or more (no need for other filter if the band is normal). I use 400 if in QRM situation. Contest operation CW: 400 Both sub and main filters have same offsets for diversity. The 200 Hz in the main is for special occasions when the going really gets tough in CW or data. 73 and happy new year all. Arie PA3A __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: will the P3 require the KXV3 option?
To get the IF Out signal? -- 73 -- Brian -- K1LI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
Rob, Yes, several K2s can be found in motorhomes, I know of at least one that is on a sailboat, and one that I built for a fellow lived in an 18 wheel truck for several years, and there have been many that have been taken on DXpeditions, and many others have been used at Field Day sites. K3s can be found in similar locations too. It amazes me how many hams tend to think of radios as fragile - most of that went away with the advent of all solid state equipment. Those vacuum tubes were fragile, but solid state gear is quite hardy and will take quite a shock without damage as long as the enclosure is intact. The most probable damage points are the front panel controls connected to knobs and any connectors sticking out of the rear panel. The Elecraft tuners for the K1, K2 and K3 are of the L network type and have a large tuning range (the KX1 is limited by its small physical size). They will tune a wide range of 'normal' antennas. Like most tuners, they do have trouble with very high impedances such as an end fed Half Wave Dipole. 73, Don W3FPR Rob Carter wrote: So my question is... i guess... does anyone use a K2 or K3 in a Motorhome (is that an RV in your language)? Is it tough enough for the mobile environment? Do people use the K2 or K3 as a Field Day station or Dxpedition radio? Is a K2 suitable for use on a base station with usual long wire or yagi antennae? I know some of this topic has already appeared in various magazines etc, but would value your insights. Your time is valuable, but if you could spare me a couple of lines re your experiences with using the radios that would be great. Thanks Rob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: will the P3 require the KXV3 option?
Yes, or the KXV3A (that's the module required with the K144XV) 73 de M0XDF, K3 #174 -- Do not meddle in the affairs of Dragons, For you are crunchy and taste good with ketchup! On 28 Dec 2009, at 14:48, Brian Machesney wrote: To get the IF Out signal? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: will the P3 require the KXV3 option?
On Mon, 2009-12-28 at 09:48 -0500, Brian Machesney wrote: To get the IF Out signal? Yes the P3 will require the KXV3 or KXV3A. Alan N1AL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 and data modes
Hi group Question Knowing that the k3 will tx data psk, afsk etc, I'm a bit puzzled and I know someone here knows the answer, but my apologies if this has already been covered. Working. PSK es AFSK data modes I have always used isolation transformers between the radio es computer to prevent ground loops etc. If I direct wire line in, line out to the K3 computer what is there to prevent RFI ground loops etc. Previously, I have used Isoterm devices from Johnny Melvin, G3LIV Which are very good. So do I need a seperate device between the k3 and computer or am I barking up the wrong tree es the k3 as a stand alone unit will do all that I want to do Ken..G0ORH Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
K2 should be a very nice radio to use it as a mobile station in any vehicle because of its very low noise receiver but the problem comes with its size,unless you have an 18 wheeler or maybe in some motorhomes where there is big space available you will not be able to install it.It don't have a detachable panel to use it as remore installation like the kenwood 480,or Icoms 7000 so that makes it more difficult,I have been thinking to install it on my SUV but then I will have to build a custom made mount to put it in front of my dashboard.Its tempting to have such a good radio and not been able to use it as a mobile unit. AD4C For a refined ham it is compulsory to own a k3 --- On Mon, 12/28/09, Don Wilhelm w3...@embarqmail.com wrote: From: Don Wilhelm w3...@embarqmail.com Subject: Re: [Elecraft] philosophical discussion To: Rob Carter ro...@slingshot.co.nz Cc: elecraft@mailman.qth.net Date: Monday, December 28, 2009, 3:13 PM Rob, Yes, several K2s can be found in motorhomes, I know of at least one that is on a sailboat, and one that I built for a fellow lived in an 18 wheel truck for several years, and there have been many that have been taken on DXpeditions, and many others have been used at Field Day sites. K3s can be found in similar locations too. It amazes me how many hams tend to think of radios as fragile - most of that went away with the advent of all solid state equipment. Those vacuum tubes were fragile, but solid state gear is quite hardy and will take quite a shock without damage as long as the enclosure is intact. The most probable damage points are the front panel controls connected to knobs and any connectors sticking out of the rear panel. The Elecraft tuners for the K1, K2 and K3 are of the L network type and have a large tuning range (the KX1 is limited by its small physical size). They will tune a wide range of 'normal' antennas. Like most tuners, they do have trouble with very high impedances such as an end fed Half Wave Dipole. 73, Don W3FPR Rob Carter wrote: So my question is... i guess... does anyone use a K2 or K3 in a Motorhome (is that an RV in your language)? Is it tough enough for the mobile environment? Do people use the K2 or K3 as a Field Day station or Dxpedition radio? Is a K2 suitable for use on a base station with usual long wire or yagi antennae? I know some of this topic has already appeared in various magazines etc, but would value your insights. Your time is valuable, but if you could spare me a couple of lines re your experiences with using the radios that would be great. Thanks Rob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KBPF3 usefulness or effectiveness?
If the AGC is being used, any difference would be seen in the S-meter, not the AF output, unless you live in an extremely quiet location and you're trying to copy 40m BC during the day. My KBPF3 switches in at 7.385. If you turn the AF gains to minimum in a quiet room, you will hear the relay kick in/out the KBPF3 as you tune across the switch-in points. Mine switches before the ham band filter adds any noticeable loss, as there is no sudden change in any level. Very smooth. Were you having trouble hearing a station or just curious about the way it operates? 73, Guy. On Mon, Dec 28, 2009 at 3:56 AM, Stephen Prior s...@sjprior.fsnet.co.uk wrote: James I suspect that 7.5MHz is far too close to the existing 40m bandpass filtering for you to notice any difference between it and the KBPF3. I can't try it here as I only have the single receiver, but if you to look around 12MHz for example I expect you would detect a significant difference. 73 Stephen G4SJP K3 #980 On 28/12/2009 02:19, James Sarte k2qi@gmail.com wrote: Hello Elecrafters, When I assembled my K3 I installed the KBPF3 module in the sub receiver figuring that I'd use the sub for SWL. However, I was thinking about moving it back to the main receiver in order to take full advantage of the synchronous AM detection feature. What I noticed though was that I can't really seem to tell if the KBPF3 makes a difference when listening to out-of-band stations. For example, tuning around tonight I came across a strong SW station on 7505 KHz. Logic tells me that the sub receiver's AF output should be significantly clearer, perhaps louder, than that of the main receiver. Going back and forth between them doesn't seem to show any differences in perceived audio quality though. So, I'm curious now if there are any tests I can perform that would demonstrate the effectiveness of the KBPF3 module. Thank you for your valued input. Vy 73 de James K2QI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 and data modes
Ken, The K3 has internal isolation transformers, no need for any external box - like they say in the ad for pasta sauce It's already in there. 73, Don W3FPR Ken Chandler wrote: Hi group Question Knowing that the k3 will tx data psk, afsk etc, I'm a bit puzzled and I know someone here knows the answer, but my apologies if this has already been covered. Working. PSK es AFSK data modes I have always used isolation transformers between the radio es computer to prevent ground loops etc. If I direct wire line in, line out to the K3 computer what is there to prevent RFI ground loops etc. Previously, I have used Isoterm devices from Johnny Melvin, G3LIV Which are very good. So do I need a seperate device between the k3 and computer or am I barking up the wrong tree es the k3 as a stand alone unit will do all that I want to do Ken..G0ORH Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.722 / Virus Database: 270.14.122/2590 - Release Date: 12/28/09 02:16:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] NAQCC Special mW Sprint Wednesday night!
This coming Wednesday evening will be the Special NAQCC mW Sprint. I will refer you to the proper URL: http://home.windstream.net/yoel/sprint200912_special.html There you will find all the details as to time, frequencies and other important information. This is a special sprint, for the month of December, that caters to the CW veteran, the CW newcomer, straight key and bug fans. All are welcome to participate, even QRO! Certificates: For 1st and 2nd highest scoring members. Prize: A book of ham radio related cartoons donated by our NAQCC Newsletter cartoonist Dick W9CBT. Come join us and have a real good time! 73 de Dave VA3RJ NAQCC #0004 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
Rob and All, I think most of your questions have already been very effectively addressed by Don Wilhelm. I would add my concurrence with all that he said based on my use of both a K2 and K3 in situations you describe. I have a motorhome that I use extensively during summer months, and I even picked up a 2nd K2 specifically to keep in that RV. It works very well in that type of situation since it has a small footprint, and lots of flexibility. My K2 is the QRP version, and I also have a small THP HL50B amp which gives me the ability to add a little punch when necessary. I can cover all the HF bands, and operate both CW and SSB with it, although CW is my primary mode. I also have a small travel trailer that I use for outings with some other ham friends here locally. We go out several times a year to various camping locations, and usually my K2 is what I bring along. I've taken the K3 several times, but I like the lower power consumption of the K2. My favorite operating event is Field Day, which I usually participate in running QRP. The K2 is nearly perfect for that--a very competent radio, and low power consumption. I'm not a serious contester, however, but if I was I would take the K3 instead. The K3 isn't that much bigger, and it is very portable. Obviously, it is an even more competent and versatile radio, but it can almost be overkill in many of the situations I use a radio for while camping. Having the luxury of chosing between the two types is very nice, but I wouldn't hesitate to take either one on just about any outing. Both the K2 and K3 have very good ATU options (much better than most internal ATU's I've had in other radios). However, as Don points out, they can struggle with some types of antennas like end fed half waves. I always take a small MFJ tuner for that reason, as I do use a wide variety of antenna types depending on my location. More often than not, the internal ATU will handle things just fine, but it helps to be prepared for unusual circumstances. I've operated CW mobile for years, going back to when I first bought a Ten-Tec Argonaut 505. The K2 has seen some use in that fashion as well, and works great. Newer radios, like the TS-480, work better for that type of operating though, since they have removable heads which makes it much more convenient. However, the K2 has a better receiver! By the way, the TS-480 is, hands down, a better radio than the FT-897 except the 480 doesn't have VHF/UHF. So, the bottom line is you wouldn't regret buying either a K2 or K3. If you can swing the K3, do it! If you only have one radio, that's the one you want. You won't regret having a K2 in most cases, but the added features of the K3 make it so much more fun to operate. Either radio will work very well in all the situations you mention. Dave W7AQK - Original Message - From: Rob Carter ro...@slingshot.co.nz To: elecraft@mailman.qth.net Sent: Monday, December 28, 2009 12:47 AM Subject: [Elecraft] philosophical discussion Hi, Have been following some of the discussions here with interest. Thanks for the friendly and positive way you deal with topics of all sorts. First of all Merry Christmas and Happy New Year to the team at Elecraft and any every one else in the group. My interest in Ham Radio is varied. I like the K2 for it's frugal use of DC power. I use radios in a portable realm sometimes, in the motorhome, at ILLW and Field Days.. . of course they sometimes get plugged in at home as well lol. Mainly SSB, but my CW is improving. So like all i seek the ideal radio... a go anywhere, yet still sophisticated enough to work as a base radio. A good Rx is important to me. It needs to sound smooth to the ear for extended use. The radio also needs to be stable enough for data use Currently running a FT897 as a utility radio and an old IC 740 as a field day or ILLW radio. The cool features and portability of the 897 are great and the Rx performance of the old Icom seem to be great for ILLW and Field Days, well here in New Zealand anyway, lol. Have thought to upgrade to a more highly spec portable QRP radio that can be used with an amplifier on base or in the motorhome and of course stand alone in the field. So my question is... i guess... does anyone use a K2 or K3 in a Motorhome (is that an RV in your language)? Is it tough enough for the mobile environment? Do people use the K2 or K3 as a Field Day station or Dxpedition radio? Is a K2 suitable for use on a base station with usual long wire or yagi antennae? I know some of this topic has already appeared in various magazines etc, but would value your insights. Your time is valuable, but if you could spare me a couple of lines re your experiences with using the radios that would be great. Thanks Rob __ Elecraft mailing list Home:
Re: [Elecraft] K3 and data modes
On Mon, 28 Dec 2009 16:20:44 +, Ken Chandler wrote: Working. PSK es AFSK data modes I have always used isolation transformers between the radio es computer to prevent ground loops etc. If I direct wire line in, line out to the K3 computer what is there to prevent RFI ground loops etc. TOTALLY UN-NECESSARY! As others have noted, the K3 works VERY WELL in data modes with nothing more than properly wired 1/8-inch cables between LIN OUT and a computer sound card, and between LIN IN and the sound card, PLUS simple (and quite proper) BONDING between the chassis of the computer and the chassis of the K3. See http://audiosystemsgroup.com/HamInterfacing.pdf (Power Point slides) and the Appendix on audio in http://audiosystemsgroup.com/RFI-Ham.pdf (a tutorial that goes with it) I do LOTS of RTTY contesting, as well as some PSK31. For RTTY, I use MMTTY, along with N1MM Logger if it's a contest. For PSK31, I use DM780 and HRD. I use VOX rather than PTT. Note also that RTTY and PSK31 decoding software will refuse to decode the combined output of the two receivers in Diversity mode, thanks to small time offsets between signals from the two RXs. These offsets are both within the K3 DSP system and the RF path to different RX antennas. 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Help, please. K3 and PSK31
Grateful thanks for all the replies, both here on the reflector and direct. I've printed all of them, because they look like a mine of helpful information, so that's now awaiting my next session in the shack. My XYL's not too well, so I've been promoted to head cook and bottlewasher and it's not easy to sneak off to the shack, although the call's getting stronger by the minute HI! Again, thanks to everyone for their kind assistance. 73 and may everyone enjoy a Happy New Year. DaveL G3TJP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
I drive a Miata and have no trouble mounting the K2. http://w9iix.com/ is a wonderful mount just on the passenger side of the center console, it bolts to the floor and can be attached and de-attached in just a couple of minutes. When there is a passenger, it goes out, the floormat goes down and you can't tell anything is installed, the floor is flat. When it is in, the mount is sturdy and positioned perfectly. A pleasure to mobile. Anyone who thinks a K2 can't be installed in their car needs to check W9IXX ! TR, WB6TMY K2 S/N 838 At 08:20 AM 12/28/2009 -0800, you wrote: K2 should be a very nice radio to use it as a mobile station in any vehicle because of its very low noise receiver but the problem comes with its size,unless you have an 18 wheeler or maybe in some motorhomes where there is big space available you will not be able to install it.It don't have a detachable panel to use it as remore installation like the kenwood 480,or Icoms 7000 so that makes it more difficult,I have been thinking to install it on my SUV but then I will have to build a custom made mount to put it in front of my dashboard.Its tempting to have such a good radio and not been able to use it as a mobile unit. AD4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
Hector, There was at least one K2 that had a custom detachable panel.several years back I recall there was a teenager named Andrew Meng who did just that here is a link to his K2 bicycle project: http://www.qsl.net/n8mx/k2.html 72 Regards, Rich K2CPE K2 #1102 Hector Padron wrote: K2 should be a very nice radio to use it as a mobile station in any vehicle because of its very low noise receiver but the problem comes with its size,unless you have an 18 wheeler or maybe in some motorhomes where there is big space available you will not be able to install it.It don't have a detachable panel to use it as remore installation. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KBPF3 usefulness or effectiveness?
FWIW, mine switches in at 7410 KHz, increasing the signal by 7 or 8 dB. I compared the background noise level below and above 7410 using the K3's internal dBV function, with AGC off. 73, Drew AF2Z On Mon, 28 Dec 2009 11:26:04 -0500, Guy. wrote: If the AGC is being used, any difference would be seen in the S-meter, not the AF output, unless you live in an extremely quiet location and you're trying to copy 40m BC during the day. My KBPF3 switches in at 7.385. If you turn the AF gains to minimum in a quiet room, you will hear the relay kick in/out the KBPF3 as you tune across the switch-in points. Mine switches before the ham band filter adds any noticeable loss, as there is no sudden change in any level. Very smooth. Were you having trouble hearing a station or just curious about the way it operates? 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
How about rugged. My buddy has a K2 on his ATV in a plastic bag on the saddle pouch. Gets a lot of banging around and keeps on ticking, hi. Mel --- On Mon, 12/28/09, Don Wilhelm w3...@embarqmail.com wrote: From: Don Wilhelm w3...@embarqmail.com Subject: Re: [Elecraft] philosophical discussion To: Rob Carter ro...@slingshot.co.nz Cc: elecraft@mailman.qth.net Date: Monday, December 28, 2009, 7:13 AM Rob, Yes, several K2s can be found in motorhomes, I know of at least one that is on a sailboat, and one that I built for a fellow lived in an 18 wheel truck for several years, and there have been many that have been taken on DXpeditions, and many others have been used at Field Day sites. K3s can be found in similar locations too. It amazes me how many hams tend to think of radios as fragile - most of that went away with the advent of all solid state equipment. Those vacuum tubes were fragile, but solid state gear is quite hardy and will take quite a shock without damage as long as the enclosure is intact. The most probable damage points are the front panel controls connected to knobs and any connectors sticking out of the rear panel. The Elecraft tuners for the K1, K2 and K3 are of the L network type and have a large tuning range (the KX1 is limited by its small physical size). They will tune a wide range of 'normal' antennas. Like most tuners, they do have trouble with very high impedances such as an end fed Half Wave Dipole. 73, Don W3FPR Rob Carter wrote: So my question is... i guess... does anyone use a K2 or K3 in a Motorhome (is that an RV in your language)? Is it tough enough for the mobile environment? Do people use the K2 or K3 as a Field Day station or Dxpedition radio? Is a K2 suitable for use on a base station with usual long wire or yagi antennae? I know some of this topic has already appeared in various magazines etc, but would value your insights. Your time is valuable, but if you could spare me a couple of lines re your experiences with using the radios that would be great. Thanks Rob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: will the P3 require the KXV3 option?--Maybe not?
Hi All, Happy New Year 2010. I own an early K3 that I purchased in Feb 2008 without the KXV3 option. As I was planning to purchase the LP-Pan for the K3, I recalled reading back then that obtaining a signal form the K3 for the LP-Pan could be achieved without the KXV3 option installed. So I purchased from Elecraft the KXV3A TMP Cable Assembly Part# E850292 planning to route that coaxial cable TMP from the KXV3A blank panel on the back of my K3 to connector P86 on the bottom of the RF board as shown in Figure 11 of the KXV3 manual. I was then planning to terminate the TMP into BNC connector into a hole that I would drill in the blank KXV3 panel escutcheon on the back of the K3. By the time I got around to the LP-Pan project the P3 was announced so I never followed through on this process. So why wouldn't this work as an alternative to buying an entire KXV3 which I have no other need to use? Am I missing something else that the KXV3 is doing to the IF signal for interfacing with the upcoming P3. Thanks for any thoughts. 73 de N1LQ-Dave __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3?
On Mon, 28 Dec 2009 01:00:08 +0100, Martin Schmiedel wrote: i am about to order filters for my K3 and would like to hear from the group what filters i should go for. First, bear in mind that the DSP in the K3 does the IF filtering that older rigs do with conventional LC circuitry, so the hardware filters you buy are roofing filters that simply protect the DSP from getting blown away by VERY strong signals. I'm a serious contester, and also do some DXing. Not much rag-chewing. I'm quite happy with the standard 2.7 kHz 5-pole, the 1.8kHz 8-pole, and the 400 Hz 8-pole filters. IMO, the 1.8 kHz filter is far too narrow for anything but contesting. It's really rather unpleasant to listen to, but it does help with things are really rough. For casual work, I'd give serious thought to either the 2.8 kHz or 2.1 kHz 8-pole filters. I have a second K3 so that I can do SO2R (single operator, two radio) contesting. It has only the 400 Hz filter. I'm planning to take advantage of Inrad's New Year's Day sale to add the 1.8kHz filter. Whether to use 2.8 kHz 8-pole or 2.7 kHz 5-pole? Good question. I'd like to hear from those who have tried both and critically compared them. There IS a enough ripple in the 2.7kHz filter to cause significant incidental AM of a RTTY signal (you will see a wattmeter bounce a lot), and I'm told that the 2.8kHz filter has a lot less. I've been told that it's also possible to tell the K3 to TX on RTTY through the 1.8 kHz filter if you have one, and that this also reduces the incidental AM. I should try that. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 needs survey -- firmware and application software
I would like to see separate RX EQ setting possibilities for CW and SSB. At least I prefer totally different values in different modes BR and HNY Olli OH6CT -Alkuperäinen viesti- Lähettäjä: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] Puolesta Wayne Burdick Lähetetty: 23. joulukuuta 2009 20:02 Vastaanottaja: Elecraft Reflector; elecr...@yahoogroups.com; elecraft...@yahoogroups.com Aihe: [Elecraft] K3 needs survey -- firmware and application software Hi all, As you probably know, we keep a list of firmware features and improvements to be added as time permits. Many of the most-requested changes were made over the past several months, keeping pace with the demands of the fall/winter contest season. (A few that come to mind: switch sequence automation via macros, improved DVR interaction with PTT, main/sub audio mixing, improved NR, lockable transmit controls, and many enhanced remote-control commands.) As we head into 2010, we'd like to refresh the master firmware list based on your input. Items already on the list have priority, of course, but this is a great opportunity to let us know what else is missing or could be improved. Our goal is to make the K3 as easy to use as possible, while providing the advanced features you need for specific operating situations. We're also planning a renewed effort to assist application software developers. If your ideas for improvements involve changes to both K3 firmware and a favorite application, we'll pass it along to the developers and work with them closely. We're making great progress on the P3 Panadapter and other new products. There will be some surprises in 2010 :) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KBPF3 usefulness or effectiveness?
Hi Guy et al, I was more or less curious about how it worked. I do hear a relay clicking somewhere around 7400 kHz, but I do not recall seeing or hearing an appreciable change in s-meter readings or AF levels. I'm sure it works fine in the lower broadcast bands though. James K2QI On Mon, Dec 28, 2009 at 11:26 AM, Guy Olinger K2AV olin...@bellsouth.netwrote: If the AGC is being used, any difference would be seen in the S-meter, not the AF output, unless you live in an extremely quiet location and you're trying to copy 40m BC during the day. My KBPF3 switches in at 7.385. If you turn the AF gains to minimum in a quiet room, you will hear the relay kick in/out the KBPF3 as you tune across the switch-in points. Mine switches before the ham band filter adds any noticeable loss, as there is no sudden change in any level. Very smooth. Were you having trouble hearing a station or just curious about the way it operates? 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Low and High Power Cmd
Don, Am 23. Dec 2009, um 18:18:47 schrieb Don Wilhelm: As they say in one of the adverts for pasta sauce Its already in there. Its not. TUN PWR is a different feature for probably a different audience. I got taught in my club to never ever use a sticking tune button, but instead generate the tuning RF with the foot switch for PTT, and the CW hand key for the signal. This is so that if anything really bad happens, letting go either the foot switch or the hand key will immediately establish safe state - ie. turn off RF (and save either equipment, or if something *really* went wrong, someones life). The TUNE button does not provide this functionality, hence we wont use it for tuning, hence TUN PWR doesnt help, thus being forced to use this 0.1W step is one of the annoyances with the K3. I can see the utility of the 0.1W step for QRP operators, I would submit that this could still be the setting for the PA not installed or deactivated. With the PA installed and enabled, 1W would be preferable. In cases where someone really needs to switch often, PA enabled/disabled could be a macro key. Mario -- Mario LorenzInternet:m...@vdazone.org Ham Radio: dl5...@db0erf.#thr.deu.eu Your mouse has moved. Windows NT must be restarted for the change to take effect. Reboot now ? [ OK ] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] External speakers suitable for K3
I got a nice pair of computer speakers this afternoon in Aldi that look and sound good when used with my K3. They have satisfactory RF immunity (no apparent problems when subjected to 100W of SSB on 80 - 6m and 50W on 2m, from attic antennas directly above the shack.) They have a tone control that very effectively eliminates any tiring high frequency hiss. They run from a 14V supply and the power input is a regular barrel type connector so they can easily be powered from the shack supply avoiding the need for another wall-wart. And they only cost £7.99. More info and pics on my blog. - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://n2.nabble.com/External-speakers-suitable-for-K3-tp4224999p4224999.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3
Elecrafters, thanks for all the input. I had many replies, personal mail or via the reflector. To sum it up: Matched filters are important for diversity. 8 votes for the 1.8khz, 4 for the 2.1 ssb filter for contesting. Some use the 1.8khz ssb filter for cw, with the dsp set to narrower bandwith. I think i will order one of those, it makes sense to use it for cw-operation on a quiet band and in ssb contests when things get rough. The 200hz and 250hz cw filters got an equal number of votes, you left me alone on this ;-) The expense on 2 matched 5 pole or 2 8-pole filters is about the same, so the criteria here is performance. May i call for a run-off? Thanks to all es HNY Martin -- 73, DM4iM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 Suggestions on a mic for the K2? looking at a Heil HC4 or HC5
I want to replace the current mic situation I am using for my K2 I have a heil headset. I'm having a little trouble with it not transmitting from time to time. It is very infrequent and for the most part worked well in the phone Nov Sweeps. I think maybe a short in the cord or a loose connection but I wiggle the wires and it works again for awhile. I would rather use the headphones of my choice and have a seperate mic, so I'm looking at the Heil HC4 or HC5. How do they perform compared to the MH2 sold on the elecraft site? Any other ideas are welcome. I'm just looking for a good change. I do 90% CW but enjoying SSB more and more. Ivin W9ILF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3
Just to add further confusion to the cw opinions, I currently have the 250 Hz 8 pole, which I like as it allows me to work very close to strong locals including those with key clicks, and I plan the purchase the 8 pole 500 Hz Inrad filter on New Years Day. Some of the responders have commented that the -6dB width of the 250 Hz filter is not that much smaller than the 250 Hz filter width, which is true. The problem is that the response on either side of the peak of the 250 Hz filter isn't symmetrical, at least mine isn't, I assume the result of working with real, physical, hardware.. One side matches well with the 250 Hz dsp filter width but the other side is wider and sets most of the overall -6 dB with if the dsp filter is set to a wider bandwidth. Dunc, W5DC DM4iM wrote: Elecrafters, thanks for all the input. I had many replies, personal mail or via the reflector. To sum it up: Matched filters are important for diversity. 8 votes for the 1.8khz, 4 for the 2.1 ssb filter for contesting. Some use the 1.8khz ssb filter for cw, with the dsp set to narrower bandwith. I think i will order one of those, it makes sense to use it for cw-operation on a quiet band and in ssb contests when things get rough. The 200hz and 250hz cw filters got an equal number of votes, you left me alone on this ;-) The expense on 2 matched 5 pole or 2 8-pole filters is about the same, so the criteria here is performance. May i call for a run-off? Thanks to all es HNY Martin __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3
Ooops, typos are us. Some of the responders have commented that the -6dB width of the 250 Hz filter is not that much smaller than the 400 Hz filter width, which is true. T Duncan Carter wrote: Just to add further confusion to the cw opinions, I currently have the 250 Hz 8 pole, which I like as it allows me to work very close to strong locals including those with key clicks, and I plan the purchase the 8 pole 500 Hz Inrad filter on New Years Day. Some of the responders have commented that the -6dB width of the 250 Hz filter is not that much smaller than the 400 Hz filter width, which is true. The problem is that the response on either side of the peak of the 250 Hz filter isn't symmetrical, at least mine isn't, I assume the result of working with real, physical, hardware.. One side matches well with the 250 Hz dsp filter width but the other side is wider and sets most of the overall -6 dB with if the dsp filter is set to a wider bandwidth. Dunc, W5DC DM4iM wrote: Elecrafters, thanks for all the input. I had many replies, personal mail or via the reflector. To sum it up: Matched filters are important for diversity. 8 votes for the 1.8khz, 4 for the 2.1 ssb filter for contesting. Some use the 1.8khz ssb filter for cw, with the dsp set to narrower bandwith. I think i will order one of those, it makes sense to use it for cw-operation on a quiet band and in ssb contests when things get rough. The 200hz and 250hz cw filters got an equal number of votes, you left me alone on this ;-) The expense on 2 matched 5 pole or 2 8-pole filters is about the same, so the criteria here is performance. May i call for a run-off? Thanks to all es HNY Martin __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] philosophical discussion
I drive a Mazda MX6, and usually have a passenger - any other suggestions? I have even tried to find a place for the front panel of my Yaesu FT-900 but have given up. I do not want it in my line of vision above the dashboard. 73, Don W3FPR W B Reese wrote: I drive a Miata and have no trouble mounting the K2. http://w9iix.com/ is a wonderful mount just on the passenger side of the center console, it bolts to the floor and can be attached and de-attached in just a couple of minutes. When there is a passenger, it goes out, the floormat goes down and you can't tell anything is installed, the floor is flat. When it is in, the mount is sturdy and positioned perfectly. A pleasure to mobile. Anyone who thinks a K2 can't be installed in their car needs to check W9IXX ! TR, WB6TMY K2 S/N 838 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3
The 200hz and 250hz cw filters got an equal number of votes, you left me alone on this ;-) The filter curves on the Elecraft web site for the 250 Hz show the filter to be more than 350 Hz wide (at best) which does not provide a significant improvement over the 400 Hz filter. On the other hand, the 200 Hz filters regularly measure 190 to 210 Hz wide at -6dB and when plotted against the 250 Hz filter are consistently tighter all the way down in spite of the larger shape factor. In my opinion, one is wasting money to have both the 400 Hz and 250 Hz filters ... use 500/200 or 400/200 or 1000/250 depending on your needs. I also don't know that I would use 250 or 200 Hz filter in the sub-receiver. If one has 500/200 in the main, I would order the 200 matched to the 500 Hz pair ... or I would simply accept the slight mismatch between 200 in the main and a 400 Hz 8-pole in the sub receiver. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DM4iM Sent: Monday, December 28, 2009 3:25 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Filters for K3 Elecrafters, thanks for all the input. I had many replies, personal mail or via the reflector. To sum it up: Matched filters are important for diversity. 8 votes for the 1.8khz, 4 for the 2.1 ssb filter for contesting. Some use the 1.8khz ssb filter for cw, with the dsp set to narrower bandwith. I think i will order one of those, it makes sense to use it for cw-operation on a quiet band and in ssb contests when things get rough. The 200hz and 250hz cw filters got an equal number of votes, you left me alone on this ;-) The expense on 2 matched 5 pole or 2 8-pole filters is about the same, so the criteria here is performance. May i call for a run-off? Thanks to all es HNY Martin -- 73, DM4iM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Vacation
Is Elecraft closed these days? (Vacation) 73's, Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Vacation
Evert, They are open today, but running with a skeleton staff - yes, vacations. 73, Don W3FPR Evert Bakker (PA2KW) wrote: Is Elecraft closed these days? (Vacation) 73's, Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.722 / Virus Database: 270.14.122/2590 - Release Date: 12/28/09 02:16:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Vacation
They were open today since they shipped my K3 today. I just got the UPS confirmation e-mail message. Oh, today is Monday, December 28, 2009. On Dec 28, 2009, at 3:25 PM, Evert Bakker (PA2KW) wrote: Is Elecraft closed these days? (Vacation) 73's, Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Vacation
Hi Don, Thanks. I understand, they need their rest to get ready for the next surprises :-) You know, when I've got vacation, I want to spend (a lot of) money . :-) I'll wait patiently then. 73's, Evert PA2KW -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Tuesday, December 29, 2009 00:37 To: ev...@pa2kw.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Vacation Evert, They are open today, but running with a skeleton staff - yes, vacations. 73, Don W3FPR Evert Bakker (PA2KW) wrote: Is Elecraft closed these days? (Vacation) 73's, Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.722 / Virus Database: 270.14.122/2590 - Release Date: 12/28/09 02:16:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: A new wrinkle on no KPA problem?
Hi folks, thanks to those who offered advice on the failure of my KPA3 to actually amplify anything. A new wrinkle has turned up as of this afternoon when I resumed testing on it: the KPA3 works every now and then very *briefly* and after it does I get the ERR 12V message on my display which points towards a the circuit breaker. I have checked the circuit breaker out of circuit and it seems fine. Anyone have a hint at what I should look at/for? Many thanks! 73, Joe, W2RBA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Re： Vacation
Hello Evert, I think Lisa is on vacation. I knew that when I placed on order for a W2 on 23 Dec 09. Happy New Year to you and family! 73 Johnny VR2XMC - 郵件原件 寄件人﹕ Evert Bakker (PA2KW) ev...@pa2kw.com 收件人﹕ d...@w3fpr.com 副本(CC) elecraft@mailman.qth.net 傳送日期﹕ 2009/12/29 (二) 8:03:18 AM 主題： Re: [Elecraft] Vacation Hi Don, Thanks. I understand, they need their rest to get ready for the next surprises :-) You know, when I've got vacation, I want to spend (a lot of) money . :-) I'll wait patiently then. 73's, Evert PA2KW Yahoo!香港提供網上安全攻略，教你如何防範黑客! 請前往 http://hk.promo.yahoo.com/security/ 了解更多! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 accessories
Has anyone got the mail on release dates for more goodies? Been saving my pennies up and the jar needs to emptied to make more room. Interested in a P3, KPA-???, maybe something else? Also wondering if there is a supplier stocking the Yamaha CM-500 AND Footswitches available online. Happy Holidays one and all De VK4FD Gary Sent via BlackBerry® from Telstra __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] FS: 250hz 8pole, 400hz 8pole
Nothing wrong with these. They've been working in #1210 for about 1.5 years. $115 each shipped CONUS. Prefer check. Paypal add $5 each for fees. 73 jim ab3cv __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 accessories
Get a bigger jar for right now! You will be able to empty it soon. 73, Don W3FPR rfenab...@gmail.com wrote: Has anyone got the mail on release dates for more goodies? Been saving my pennies up and the jar needs to emptied to make more room. Interested in a P3, KPA-???, maybe something else? Also wondering if there is a supplier stocking the Yamaha CM-500 AND Footswitches available online. Happy Holidays one and all De VK4FD Gary __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K3] Diversity and CW?
Does CW benefit from diversity reception? Can anyone relate any experiences with such improvement and some details on their setup including filters/settings? 73 jim ab3cv __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: LPF, bass audio, new DSP board: Stirring the pot?
I have to admit, I just have not experienced any of these issues with either of my K3s. Yes, I am mostly a CW guy and yes, I use headphones. So...lacking any real test equipment (I assume that if the test equipment between my ears can't discern it, then who cares what a meter or scope shows me). Crude, I know, but this worked well for me one summer, in 1974 when I worked for Signal/One. They had all the test gear and engineers (this was when they moved to NJ), but nobody there could figure out/understand what was wrong with the radios returned for repair. All I needed was a couple minute with the radios (on the air) to quickly discover what was wrong and THEN the engineers could apply a fix/repair. http://picasaweb.google.com/dougzzz/KR2Q1966ToPresent#5419152602223700290 Anyhow, someone recently made a great post (IMHO)...sorry I can't remember who it was, listing the three problems. So I decided to test the K3s using what I have here (my ears, acoustic nerves, and brain). First, I have my cw pitch set to 400hz. Using the CWT feature, I zeroed in a cw signal. Heard it FINE via the inboard speaker and equally as fine via my communication headphones (the headphones sound great on CW, but I can tell that they are getting restrictive on SSB on the top end). Then, using my RIT, I dialed in 200hz offset (making the received signal lower in pitch). Using my headphones, the signal seemed fine...perfectly readable, good tone, easy to copy. Then I pulled the headphone plug to listen via the internal speaker: NOTHING. Just some thunks - I could not copy any signal at all and I certainly could not read any CW. So I plugged the headphone back in and BINGOperfect, smooth, easy copy with a 200hz note. A real difference. I am thrilled that those who have implemented the new DSP board with LPF can now hear better, but I have to wonder how much of this has to do with trying to do too much with an internal speaker. I don't know and I am not conjecturingI'm just wondering. At least now, I do know why I have not experienced most (any?) of these audio issues. If I find a pair of quality HI-FI stereo phones around the house somewhere, maybe I'll plug those in and see if I can duplicate the noisy receiver problem, suspecting that is due to hiss as others have suggested. Right now, using communication headphones, I can not. One last thing that I do not understand...and I am hoping someone can answer me. Why would riding the RF gain or adding Attenuation in any way impact noise (assuming it is not due to intermod)? Today I tried that again and again. Adding in attenuation simply reduced the audio output (again, according to my EAR). Yes, the noise went down, but did the signal. When I upped the AF gain to compensate, well, everything sounded the same relatively speaking (signal and noise) as with no attenuation. If the noise is not due to intermod (what Elecraft calls desense) then what can cutting back on the total signal due in terms of making less noise? I am not a technical guy. I just have lots of ham radio experience. My UG degree is in Biology (BS). I did my first graduate work at U Penn School of Veterinary Medicine (VMD) and my 2nd grad degree earlier this decade in Healthcare Administration (MHA). Like I said, I'm no techie. :-) Wishing everyone a Happy New Year for 2010. de Doug KR2Q __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] NR Revisited
__ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: LPF, bass audio, new DSP board: Stirring the pot?
On Mon, 28 Dec 2009 21:09:46 -0500, DOUGLAS ZWIEBEL wrote: Your post is excellent, and I agree with most of it. I do want to correct an important error. See below. If the noise is not due to intermod (what Elecraft calls desense) Intermod and desense are VERY different things. Intermod is the generation of beat frequencies by a non-linear process (that is, amplitude distortion). Desense (short for desensitization) is the reduction in the gain of a system by such severe rectification of the input signal that the bias point is shifted enough (to either cutoff or saturation) to reduce the gain of the system. Yes, both are the result of overloading of a gain stage (usually the input), intermod simply produces trash and spurious responses, while desense can literally turn the input stage off. As an example, I once owned a very nice little Yaesu talkie that could be biased so strongly into cutoff in downtown Chicago that it couldn't hear a 100W repeater feeding a 9dB gain antenna on a 1,000 ft building two miles away. then what can cutting back on the total signal due in terms of making less noise? EXACTLY! The vast majority of HF communications circuits are limited by noise that comes in on the antenna, not circuit noise in the receiver. This is definitely true on all ham bands below 20M, no matter where you live, and it's usually true above 20M unless either the bands are dead or you live in a VERY quiet QTH. W8JI has often observed that if the noise in your headphones increases when you connect the antenna, noise in the electronics is NOT a problem. FWIW, I have ALWAYS used pro quality headphones with my ham gear, and certainly don't consider the K3 noisy. Of course, I'm 68, have been a ham for 54 years, and have worked in pro audio for the past 40 years, so my hearing is down a bit on the high end. :) YMMV. It should also be noted that while the K3 comes with multiband graphic RX EQ, there are no bands above 5kHz. That's something that the crew in Aptos might want to add to the to do list. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] k3 build or buy
I purchased my k3 as a kit and with a little help from a sighted friend managed to build the basic k3 in about 22 hours total time. Not sure about the calibrations since I didn't have a reliable power meter at the time. However, for what its worth, a blind man can do it. Build and enjoy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Diversity and CW?
It benefits as much as any other mode. The most important thing and the most difficult thing is installing two complementary antennas. You hear the signal from one antenna and receiver in the left ear and the other in the right ear. You benefit when you have a weak signal that is sometimes better on one antenna than the other. Your other settings should ordinarily be the same for both receivers with what ever other settings work best for you. Willis 'Cookie' Cooke K5EWJ From: Jim Miller j...@jtmiller.com To: Elecraft Reflector elecraft@mailman.qth.net Sent: Mon, December 28, 2009 7:44:50 PM Subject: [Elecraft] [K3] Diversity and CW? Does CW benefit from diversity reception? Can anyone relate any experiences with such improvement and some details on their setup including filters/settings? 73 jim ab3cv __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Diversity and CW?
Does CW benefit from diversity reception? Can anyone relate any experiences with such improvement and some details on their setup including filters/settings? Absolutely Jim! Diversity helps on ALL MODES. The main thing I notice is that it fills in the dips, in other words when a signal fades in QSB on the main antenna, it seems to not dip as far and may even come up a little on the diversity receiver. The net effect is that the signal appears to drifts side-to-side from ear-to-ear rather than up-and-down into the noise. I estimate diversity is worth a few very valuable dB on receive. It helps most with those weak, QSB-ridden DX signals wandering up and down at the band noise level. Nothing special needed on the filters settings - just turn diversity on - with one exception: for best performance, the main and diversity RXs need matched filters. Mismatch will apparently cause a slow 'beat' and reduce the benefit. The more important issue is to have sufficiently different antennas for main RX and diversity RX, ideally with both spatial and polarization diversity. I have been using my normal TX antennas for the main RX, all about 100m from the shack on a remote switch, and a single 30m wire loop for diversity RX, about 10m from the shack in the opposite direction. The 30m loop works best on 30m, of course, but helps to some extent on all other bands except 20m where it's too badly mismatched. A full set of monoband diversity RX antennas would be lovely, and I guess a decent multiband vertical would work OK too, but meanwhile the 30m loop does the job ... Or rather it did until a storm broke the line, and I put up a 12m TX loop instead! I miss diversity and plan to reinstate the 30m loop, moving the 12m loop across to the TX end. 73 Gary ZL2iFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] My new downloads website
After searching the net for long time and downloading lots of manuals from all japaneese brands,as well as national ones,I have put together a whole page for everybody to download any manual including all that there is available for K2 and K3 on the net,for the ones interested to hear how my K3 receives,there is a dedicated file with lots of MP3 of received stations,some of them weak dx,some of them ragchewers,so you will be able to compare your receiver with mine. This is the link: www.ad4c.us I am still working on it uploading 10GB of manuals,bare with me,it will take me a couple more days to finish it up but it has already Icom,K3,K2 and yaesu manuals ready to be dowloaded. AD4C For a refined ham it is compulsory to own a k3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: LPF, bass audio, new DSP board: Stirring the pot?
Jim K9YC wrote: It should also be noted that while the K3 comes with multiband graphic RX EQ, there are no bands above 5kHz. This is an interesting point Jim. Human hearing in the 20 kHz range is not unheard of. I wonder if the K3 design cuts this off above 5 kHz or if it allows it to pass through the audio stage? Can anyone on the list clarify this? 73, Fred, AE6IC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: LPF, bass audio, new DSP board: Stirring the pot?
On Mon, 28 Dec 2009 20:33:03 -0800, Fred Atchley wrote: Human hearing in the 20 kHz range is not unheard of. We start out that way as children, but suffer hearing loss from multiple sources, mostly due to exposure to excessively loud sounds. I wonder if the K3 design cuts this off above 5 kHz or if it allows it to pass through the audio stage? Good engineering practice would include high pass and low pass filters at the limits of transmitted bandwidth. For ham circuits, 300 Hz and 3.5 kHz would be good cutoff frequencies for 3-pole filters for HF radios. For AM broadcast, 40 Hz and 9 kHz (US) and 8 kHz (EU) are about right. It should also be noted that roughly two decades ago, AM broadcasting adopted the practice of HF pre-emphasis like with FM and analog TV. But PULEEZE don't tell the wideband AM lunatic fringe. As Riley Hollingsworth said so eloquently when he was running the FCC's Enforcement Bureau, if you want to be a broadcaster, buy a broadcast license or get a job at a radio station. So yes, there ought to be user-definable high pass and low pass filters in the audio system. There ARE such filters in the IF, but not in the audio system. The result is that if gains are not well managed in the K3, some of our younger users could hear hiss. Since my highs are long gone, I can't comment on that. :) 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] securing K2 RF board
You can also install the chassis screws into the 2D connectors, which provide something narrow enough for the Panavise PCB holder to latch on to. That's how I did it, and it worked reasonably well. --phil On Dec 28, 2009, at 1:09 AM, Don Wilhelm wrote: Conway, Just my way of working, I HATE things like the Panavise, it is more of an encumbrance than a help IMHO. However, you may elect to delay mounting the 2D connectors until you need to mount the side panels - that will allow you to use your Panavise if that is your preference. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 problems
I completed the baseline k2 kit but I seem to have some problems: The Voltage measurements from pg17 of the trouble shooting section differs from what I'm seeing in the receive case: U4 5-pin should be 5 but I get 0 U4 7-pin should be 0 but I get 5 U5 1-pin should be 0 but I get 5 U5 2-pin should be 5 but I get 0. I've traced through - U4, 5-pin is connected to U5-2 and 3 pins on the control board. I've followed the leads and they are clean. I've resistance checked them and everything appears properly connected. I've also checked resistance to ground and U4-5 is not shorted. Likewise U4-7 connets to U5-1 and two chips on the control board. They seem to be digital logic pins, so I wonder if the listed voltage is incorrect? Otherwise it seems one of my chips is bad. Suggestions? Thanks Robert __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Filters for K3
There is a big difference between the 200 (actually 224) and the 250 (actually 370) and very little diffference between the 250 and the 400 (actually 435). My selection was for the 250 and I am very happy with it and actually see the 200 as being RARELY used if at all. It is narrow enough that if the responding cw station is off frequency, you will NOT hear them at all. I intend to add the 500 filter (actually 565) next. Before you buy the 1.8, set your DSP to 1.8 and spend some time listening at that width to see if you like it compared to the DSP setting of 2.1 to decide between those two filters. 2.7, 1.8, 500, 250 and someday may also add a 1.0 filter. I may also have to swap out my 1.8 for a 2.1 because of my damaged hearing. 73, de JIm KG0KP - Original Message - From: DM4iM hamra...@vr-web.de To: elecraft@mailman.qth.net Sent: Monday, December 28, 2009 2:24 PM Subject: Re: [Elecraft] Filters for K3 Elecrafters, thanks for all the input. I had many replies, personal mail or via the reflector. To sum it up: Matched filters are important for diversity. 8 votes for the 1.8khz, 4 for the 2.1 ssb filter for contesting. Some use the 1.8khz ssb filter for cw, with the dsp set to narrower bandwith. I think i will order one of those, it makes sense to use it for cw-operation on a quiet band and in ssb contests when things get rough. The 200hz and 250hz cw filters got an equal number of votes, you left me alone on this ;-) The expense on 2 matched 5 pole or 2 8-pole filters is about the same, so the criteria here is performance. May i call for a run-off? Thanks to all es HNY Martin -- 73, DM4iM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
