Re: [Elecraft] I need your help...Spammer
This is similar to a message I got yesterday. It came from some non-US email address. It was someone saying they wanted to buy my K2 and to tell them how much where to send the funds. I just deleted the message. -- Mike WE0H K2 #6698 SKCC #5446 Paul Gates wrote: Please I need your assistance,I made an emergency trip to England and am having a little problem. Please Assist me with Two thousand dollars ($2,000.00) to enable me conclude my program here. I will pay you back as soon as I return home. Send it via western union money transfer with this info. Receiver: Paul Gates Location: West Norwood London SE27 9DW United Kingdom. Remain blessed, Pau. __ 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] I need your help...Spammer
Paul is a valid member of this reflector. But notice the undisclosed recipients. I would believe his computer has picked up a virus that is using his email contact list. 73, Don W3FPR David Ferrington, M0XDF wrote: On the basis that only approved emails get onto the reflector, this person must be known and presumably reading the list. No callsign I notice, but spam doesn't normally include such details as knowing about a K2. The postcode relates directly to Barclays Bank plc 543 Norwood Road LONDON SE27 9DW but that is in Lambeth, not West Norwood (according to GE), but they aren’t that far apart. It's Spam Mike, but not as we know it! 73 de M0XDF, K3 #174 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.45/2045 - Release Date: 04/07/09 06:41:00 __ 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] I need your help...Spammer
At 06:53 AM 04/08/09, Don Wilhelm wrote: Paul is a valid member of this reflector. But notice the undisclosed recipients. I would believe his computer has picked up a virus that is using his email contact list. Of course someone could contact him and ask if he sent it. If he did, then it would end the speculation on the list If he did not, then he might realize his system was infected or We could keep on posting and wondering and conjuring reasons. 73, Thom k3hrn Sometimes the simplest approach is the one that works __ 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] I need your help...Spammer
There is a very bad bug out now, one of many that preys specifically on systems that are not patched. I think we are seeing the result of people not keeping their system patched, or using older OS's that are no longer patched by MS. Bad MS, no cookie! How often have you heard someone say, I stopped letting Windows update my machine, it keeps messing it up. Conflicter was already out in 4 strains, and as it becomes more successful, it will be re-written to do more, thus it will likely mutate. Dave Wilburn NM4M Thom LaCosta wrote: At 06:53 AM 04/08/09, Don Wilhelm wrote: Paul is a valid member of this reflector. But notice the undisclosed recipients. I would believe his computer has picked up a virus that is using his email contact list. Of course someone could contact him and ask if he sent it. If he did, then it would end the speculation on the list If he did not, then he might realize his system was infected or We could keep on posting and wondering and conjuring reasons. 73, Thom k3hrn Sometimes the simplest approach is the one that works __ 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] I need your help...Spammer
conficker doesnt do anything yet, it has the potential to be a spambot net, but it hasnt done anything except phone home so far. Matt W8ESE Former KD8DAO http://blog.MattIsKichigai.com On Wed, Apr 8, 2009 at 7:46 AM, David Wilburn dave.wilb...@verizon.net wrote: There is a very bad bug out now, one of many that preys specifically on systems that are not patched. I think we are seeing the result of people not keeping their system patched, or using older OS's that are no longer patched by MS. Bad MS, no cookie! How often have you heard someone say, I stopped letting Windows update my machine, it keeps messing it up. Conflicter was already out in 4 strains, and as it becomes more successful, it will be re-written to do more, thus it will likely mutate. Dave Wilburn NM4M Thom LaCosta wrote: At 06:53 AM 04/08/09, Don Wilhelm wrote: Paul is a valid member of this reflector. But notice the undisclosed recipients. I would believe his computer has picked up a virus that is using his email contact list. Of course someone could contact him and ask if he sent it. If he did, then it would end the speculation on the list If he did not, then he might realize his system was infected or We could keep on posting and wondering and conjuring reasons. 73, Thom k3hrn Sometimes the simplest approach is the one that works __ 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 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] AM RX bandwith
This might be a stupid question since I think this has been on the list before. Just upgraded from 2.76 to 3.06. I´m using 13 KHz FM filter for AM RX´ing. Before I could see 10 KHz DSP bandwith but now 5.00 KHz. Something has changed. What bandwith do I get? Did I get 10 KHz before and now it is changed to 5 KHz or is it just one sideband I´m seeing? I´m just puzzled. This is how I like to have it. Would like to be able to widen the DSP all the way out to the filter (13 KHz) but it seems to me it´s not possible, maybe it never was. Sorry if this has been on the agenda before. 73 Jim SM2EKM PS: When I think about it maybe I saw 9 KHz before and not 10, well one or the other. __ 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] AM RX bandwith
Jim, The change is only in the displayed width. Before it was the IF bandwidth, and now it is the audio bandwidth - for AM, that will be 1/2 of the IF bandwidth, so 10 kHz before equals 5 kHz displayed now. It is consistent with the other bandwidth displays that indicate the audio channel width. 73, Don W3FPR Jan Erik Holm wrote: This might be a stupid question since I think this has been on the list before. Just upgraded from 2.76 to 3.06. I´m using 13 KHz FM filter for AM RX´ing. Before I could see 10 KHz DSP bandwith but now 5.00 KHz. Something has changed. What bandwith do I get? Did I get 10 KHz before and now it is changed to 5 KHz or is it just one sideband I´m seeing? I´m just puzzled. This is how I like to have it. Would like to be able to widen the DSP all the way out to the filter (13 KHz) but it seems to me it´s not possible, maybe it never was. Sorry if this has been on the agenda before. 73 Jim SM2EKM PS: When I think about it maybe I saw 9 KHz before and not 10, well one or the other. __ 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] I need your help
Gents Ladies, (you know who you are... Either Paul's computer is infected or his email address is within another computer's address book. Seeing as it came to this reflector my guess is his computer is compromised for it to use his email to be sent to this reflector. Not necessarily though but it's a good bet the info within his address book and mailing procedures is known to others. To wit: A review of the IP addreses the request used to get to me in Connecticut went in reverse as follows, from most recent and lastly to the original IP... To me: Sent from IP 69.16.226.196 (Lansing Michigan) To Lansing Michigan: P 206.190.37.27 (Sunnyvale, CA) To Sunnyvale, CA: IP 196.3.183.72 (Abuja Nigeria) It's one of the famous money making scams from Nigeria that you've likely heard so much about. Their government doesn't do squat to stop this, it flows too much money into their country. Gary KA1J Please I need your assistance,I made an emergency trip to England and am having a little problem. Please Assist me with Two thousand dollars ($2,000.00) to enable me conclude my program here. I will pay you back as soon as I return home. Send it via western union money transfer with this info. Receiver: Paul Gates Location: West Norwood London SE27 9DW United Kingdom. Remain blessed, Pau. __ 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] I need your help [END of Thread]
Let's end this thread. If I see subsequent SPAM posts from this address I'll unsub it. Please - When spam like this hits the list, please do -not- post to the list to discuss it. That only multiplies the SPAM impact an order of magnitude, raising the list noise level. Especially when you copy the SPAM text in your email. Feel free to email me when you think I may have missed it. (I usually get 10-30 emails from members every time this happens.. ;-) 73, Eric WA6HHQ Elecraft List Moderator Gary Smith wrote: Gents Ladies, (you know who you are... Either Paul's computer is infected or his email address is within another computer's address book. _..._ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
On Tue, 7 Apr 2009 05:37:40 -0700 (PDT), Julius Fazekas n2wn wrote: Jim, ask for a quote from whom? WX0B or Fair-Rite? For small and medium quantities, WX0B. For large quantity ($500-$1,000 min order, buy only in box quantities), Fair-Rite or other distributions listed on their website and in Appendix One of my tutorial. 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] OT: J and -31 mix toroids
I think Allied or some of the others in your article will sell in smaller quantities. Make sure you know what you are ordering. Maybe WX0B buys enough to get a better discount. CC Packet Cluster W0MU-1 W0MU.NET or 67.40.148.194 A slip of the foot you may soon recover, but a slip of the tongue you may never get over. Ben Franklin -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Wednesday, April 08, 2009 9:50 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: J and -31 mix toroids On Tue, 7 Apr 2009 05:37:40 -0700 (PDT), Julius Fazekas n2wn wrote: Jim, ask for a quote from whom? WX0B or Fair-Rite? For small and medium quantities, WX0B. For large quantity ($500-$1,000 min order, buy only in box quantities), Fair-Rite or other distributions listed on their website and in Appendix One of my tutorial. 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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
On Tue, 7 Apr 2009 09:23:15 -0700 (PDT), Julius Fazekas n2wn wrote: I see it's a pretty common question once I found the part number... I don't get it. I went to a LOT of trouble to write that tutorial, then post a link to it in response to questions like this, tell people where to look, and still questions like this. The Fair-Rite part numbers are listed with graphs of the performance of these parts in the tutorial where they are discussed in the text, and REPEATED in Appendix One, with detailed advice about where to buy them and how to buy them. Everything you need to know to wind chokes for the bands you want to operate is in the Choke Cookbook. 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] OT: J and -31 mix toroids
Mike and all, Loadstone quoted $5.4506 each for quantities of 1 to 249 pieces. They do have a minimum order of $50. Very nice on the phone. I'm ordering for our Tennessee Contest Group, so we will exceed the minimum by a little bit ;o) This should kill the last of the garbage on my 160M antenna. Cheers, Julius Fair-Rite has a quite high minimum order value, several hundred dollars as I recall. OTOH Mouser stocks most of the 31 material you would likely find useful including the 2.4 inch toroids and the monster snap-on. The Fair-Rite web site has all the technical info you will need to cross-reference to the correct part on Mouser. Mouser unit cost is also quite high. I joined forces with a local ham friend and we purchased our mix 31 toroids and the biggest clamp on at Lodestone Pacific http://www.lodestonepacific.com/ You might see if you can get some friends to go in with you and save some money. We purchased in quantities of 20 each and they were quite happy to deal with us, fast and courteous. I don't know if we had requested a smaller quantity if they would be so willing. They are a distributor not a retail house. You have to know exactly what you want so know the Fair-Rite catalog number. The Fair-Rite catalog is on the Lodestone Pacific site. The 2.4 inch toroid is part number 2631803802 The biggest clamp on number is 0431177081, This is a substantial clamp on and is quite useful. It can handle 1 inch cable but is really good for example for passing RG8X through it 7 or so times to create a really high impedance common mode choke at your antenna feed point or elsewhere. For shopping comparison purposes here is what we paid in January of this year: --2.4 inch toroid (mix 31): $5.46 each, quantity 20 --Biggest clamp on (Round Cable Snap-it, mix 31): $9.39 each, quantity 20. Tax was zero and shipping was $7.60 for entire lot. Mike Scott - AE6WA Tarzana, CA (DM04 / near LA) NAQCC 3535 K3-100 #508 / KX1 #1311 __ 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 - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 -- View this message in context: http://n2.nabble.com/OT%3A-J-and--31-mix-toroids-tp2593939p2606222.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] AM RX bandwith
It is my understanding that the displayed BW is that of the audio. At least with my single 2.8KHz filter, there is a caveat: the operational bandwidth can't exceed the i-f filter bandwidth, even though the display will lull you into thinking so, if you're not careful. With my radio if I normalize the BW, the Lo Cut defaults to 100 Hz and the Hi Cut to 2.9KHz. If for some reason I adjust the Hi cut to a higher frequency, the display will still show the Lo Cut at 100 Hz. If for example I decide to widen the BW to 3.5 KHz (Hi = 3.6) to improve fidelity the Lo Cut readout will still display 100 Hz, but the low frequency response isn't what it was before. In doing this with my radio, a 300 Hz tone is down 12 dB. This was because changing the DSP limit moved the i-f filter pass-band with respect to the signal. In other words, the DSP BW is *not* independent of the i-f filter BW. Of course it can be argued that the readouts are displaying the audio pass-band and this is to be expected. But I think this is wrong. Perhaps some of the reports of lousy audio result from this mistake. Wes Stewart, N7WS --- On Wed, 4/8/09, Don Wilhelm w3...@embarqmail.com wrote: From: Don Wilhelm w3...@embarqmail.com Subject: Re: [Elecraft] AM RX bandwith To: Jan Erik Holm sm2...@telia.com Cc: Elecraft Reflector elecraft@mailman.qth.net Date: Wednesday, April 8, 2009, 8:37 AM Jim, The change is only in the displayed width. Before it was the IF bandwidth, and now it is the audio bandwidth - for AM, that will be 1/2 of the IF bandwidth, so 10 kHz before equals 5 kHz displayed now. It is consistent with the other bandwidth displays that indicate the audio channel width. 73, Don W3FPR Jan Erik Holm wrote: This might be a stupid question since I think this has been on the list before. Just upgraded from 2.76 to 3.06. I´m using 13 KHz FM filter for AM RX´ing. Before I could see 10 KHz DSP bandwith but now 5.00 KHz. Something has changed. What bandwith do I get? Did I get 10 KHz before and now it is changed to 5 KHz or is it just one sideband I´m seeing? I´m just puzzled. This is how I like to have it. Would like to be able to widen the DSP all the way out to the filter (13 KHz) but it seems to me it´s not possible, maybe it never was. Sorry if this has been on the agenda before. 73 Jim SM2EKM PS: When I think about it maybe I saw 9 KHz before and not 10, well one or the other. __ 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] OT: J and -31 mix toroids
-Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft- boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Wednesday, April 08, 2009 8:57 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT: J and -31 mix toroids On Tue, 7 Apr 2009 09:23:15 -0700 (PDT), Julius Fazekas n2wn wrote: I see it's a pretty common question once I found the part number... I don't get it. I went to a LOT of trouble to write that tutorial, then post a link to it in response to questions like this, tell people where to look, and still questions like this. Well, I for one appreciate the write up! I called and ordered a box of them from one of the distributors and got a great deal! Thanks! Adam - K3ARK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
Pretty simple Jim, I'm old ;o) I probably have three copies of this tutorial printed in various locations, but never where I need it when I have time to search. On the other hand, I do recall the size and material of the item in question. Usually that's an easy way to search for surplus parts, uber cheap. It doesn't always work. Fair-Rite's number system is not particularly user friendly either. We could discuss spam ;o) Cheers, Julius Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party: Sunday, 6 Sept 2009 http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 with AMPLIFIER
Hello, I need some information how can I hook up my new K3 to either ICOM PW1 or Heathkit SB1000 Amplifier. What do I need to get my K3 work with my AMP? 73 George KE6TE __ 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 with AMPLIFIER
George, The K3 keys up to 200 volts POSITIVE via the Key Out jack in the back. If your amps require negative voltage to be keyed you will need an outboard relay. You really do not need ALC, but if you want to use it, the signal is on the accessory jack. Be sure your K3 has the negative ALC mods incorporated. The K3's RF output (antenna connection) will go to the amp's input. Your KANT3 will not be needed except when the amp is bypassed; if installed, disable it with the ATU button on the K3. That's it - 2 or 3 connections depending on ALC usage or not. My K3 works great with my Ameritron ALS600 amp. Monty K2DLJ - Hello, I need some information how can I hook up my new K3 to either ICOM PW1 or Heathkit SB1000 Amplifier. What do I need to get my K3 work with my AMP? 73 George KE6TE __ 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] Elecraft email List Official Guidelines - Updated 4/8/2009 - Please read
Elecraft Mail LIST GUIDELINES For those of you who are new to the list, (and for those of us who have rapidly failing memories..), here is a quick list of things to remember when posting to this list. Please save this for future reference. The most important thing to remember is that this is only a hobby - Let's have fun! 1. YOU MUST BE SUBSCRIBED to the [Elecraft] list TO POST to it. (This is done to stop advertising spammers from hitting the list.) Any postings sent to elecraft@mailman.qth.net by addresses different from the exact ones it shows as subscribers will be rejected. This includes alias (forwarded) addresses like w1...@arrl.net. If you use an alias to subscribe you must have it as your from: and return address too. Subscribing with w...@arrl.net from your physical address of j...@aol.com will allow you to receive postings, but your postings to the list will be rejected if their from: and reply to: address does not match your subscribe address.. Go to http://mailman.qth.net/mailman/listinfo/elecraft to subscribe and to change your list preferences. To unsubscribe or to change your list preferences (digest, no mail on/off etc.), scroll to the bottom of the page and log in with your subscribed email address and the password that was sent to you by email when you subscribed (and monthly afterwards.) 2. If you want to provide an attachment, .JPG picture or other large file for use on the list, first post it to your personal web page and then post a link to its address in an email to the list. The list strips all attachments to prevent viruses from propagating and to keep the archives at a reasonable size. 3. Please keep your postings short and the amount of copied text from previous posts to an -ABSOLUTE MINIMUM- in your replies. Always delete -everything- from the prior post except what is necessary to keep your reply in context. Most copied messages can be reduced to one or two sentences to retain context. Remember to delete the email list footer from the previous post. Especially try to avoid copying a long prior posting and adding 'Me Too!' or something similar. As the number of users on this list grows (over 3500 now) we need to work to minimize information overload... If a reply is -not- of interest to the list, just reply directly to the posting party. 4. EMAIL OVERLOAD: If you are overloaded by the volume of individual messages on the list, You can view the searchable daily Elecraft list messages for each month in web format at: http://www.elecraft.com/elist.html . These archives are updated hourly and list all postings by subject. Just click on the ones you are interested into read. You can also set your list email preferences to 'no mail' delivery, which still allows you to post to the list when reading via the digest. You can also change your subscription to the DIGEST version, which sends you a single compilation each day. To change your email list options or to subscribe / unsubscribe, go to: http://mailman.qth.net/mailman/listinfo/elecraft Scroll to the bottom of the page to log into your preferences page and set your mail options to 'no mail'. 4a. Please make an effort to keep list volume under control by resisting the urge to post a comment on every long discussion thread (CW, Band Switching, Soldering etc.) With over 3,000 list subscribers volume can quickly get out of control if everyone feels the need to comment. While we do not overly restrict the subject matter on this list, and we encourage postings on a wide range of amateur radio related topics, please remember that the list's primary focus is on Elecraft products and their use. Many people rely on it for pointers on building, using and troubleshooting their elecraft products. 4b. *** [NEW] When emailing about a specific rig or option, please add the rig/option name(s) to the first part of your email subject line. (K1, K2, K3, KX1 etc.) This will be a huge help for those experiencing email overload and will allow automatic filtering based on subject line. Examples: Subject: [K3] Filter Options Subject: [KX1] How to use ped portable? Subject: [XG2] Wow! Its a big help. 5. *** IMPORTANT *** PLEASE KEEP ALL POSTINGS CORDIAL. Restrain the urge to email someone admonishing them about a posting. The last thing we want to do is to scare anyone off the list. Overly aggressive postings and negative comments about other posters only serves to scare away new potential list members. Waiting over night before hitting 'send' really helps to put things in perspective. Please make all postings as if you were talking face to face to a close friend you do not wish to offend. If you have a complaint about someones posting, spam or a thread topic please email idirectly to me ( eric(at)elecraft.com ) and I'll address it. Do not post your complaints to the list. 5a. Please -do not- post publicly or privately asking people to stop a particular thread, no matter how long, off topic or
[Elecraft] Crikey! Please edit replies down to a minimum size and delete extra footers
When replying to emails on the list, please remember to edit down the copied text to the minimum needed to retain context. One or two sentences from the original post are usually sufficient. This keeps the list and archive volume down and makes everything much more readable. *** Don't forget to delete the list footer message too or you will have multiple copies of it in your reply. A large part of our readers get the list in daily digest mode. When large amounts of previous posts are copied over and over it makes the digest very large and virtually unreadable. Also, many of our readers outside the U.S. pay for email by the kB and are using slower modems. Brevity in your posts helps a lot there. :-) 73 from your friendly Elecraft list manager Eric WA6HHQ __ 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] Lost your list Password? - Here's how to get it.
If you have misplaced your elecraft list password, or if you never received it, here is how to get it sent to you again. Go to: http://mailman.qth.net/mailman/listinfo/elecraft and scroll to the bottom of the page. Enter your email address (the one you used for the list) and click on 'Edit Options'. This takes you to your personal list options page. One of the buttons on that page is labeled 'Email my password to me'. Once you have your password, go to the above link and enter it to change your subscription parameters (digest mode, unsub etc.) 73, Eric WA6HHQ __ 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 and Audio increase
The post from BA4RF etc about the NR causing the audio to blast, I mentioned I do not work SSB but tried went to SSB and confirmed the increase in audio, well its on all modes as far as I can tell, to be more truthfull I do not use NR as I find it to non effective to CW work at least the for what I want, If you have a decent signal strength CW signal tuned to the pitch setting and hit NR with a setting of 4 the audio increases dramatically, I tried it also listening to AM broad cast on 40 meters and had the same increase. So unless its my radio only again the NR function is not working on all modes as of the last couple updates. AGC updates effected the NR in some fashion? I did not try changing any of the AGC settings to see if they made any difference. 73 Merv KH7C __ 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] Can a 1N4007 Be an Effective Relay Snubber?
To answer, I hope definitively, the question is a 1N4007 power diode too slow to be used as a relay coil snubber, I've updated my December 2007 diode turn-on time measurements with data taken this morning showing the effectiveness of (a) no snubber; (b) 1N4148 snubber and (c) 1N4007 snubber with a typical small relay switched by a 2N7000 MOSFET transistor. I've also looked at the how much the relay release time lengthens when a snubber is added. (Of course, the specifics are dependent upon the particular relay but the concepts are similar.) The details are at http://www.cliftonlaboratories.com/diode_turn-on_time.htm The Cliff's Notes version is that the turn-on (note I said turn-on, not turn-off) time of a 1N4007 diode is sufficiently fast to be a very effective relay snubber. The data also shows that a diode or MOV or other technique should be used to control inductive field decay voltages. Jack K8ZOA www.cliftonlaboratories.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] NR and Audio increase
I can almost guarantee this is going to be another one of those, My radio doesn't act like that threads. The reason being, this phenomenon is level sensitive. With a weak signal the noise reduction lowers the signal strength but above a certain level, it increases the signal dramatically. With a -110 dBm signal (1000 Hz beat note) turning on NR (F1-1) reduces the audio signal 6 dB. At -100 dBm input, NR *increases* the signal 11 dB. At -90 dBm it's up 16 dB. Wes N7WS --- On Wed, 4/8/09, Merv Schweigert k...@flex.com wrote: From: Merv Schweigert k...@flex.com The post from BA4RF etc about the NR causing the audio to blast, I mentioned I do not work SSB but tried went to SSB and confirmed the increase in audio, well its on all modes as far as I can tell, to be more truthfull I do not use NR as I find it to non effective to CW work at least the for what I want, If you have a decent signal strength CW signal tuned to the pitch setting and hit NR with a setting of 4 the audio increases dramatically, I tried it also listening to AM broad cast on 40 meters and had the same increase. So unless its my radio only again the NR function is not working on all modes as of the last couple updates. AGC updates effected the NR in some fashion? I did not try changing any of the AGC settings to see if they made any difference. 73 Merv KH7C __ 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] Can a 1N4007 Be an Effective Relay Snubber?
I have used 1N4007 diodes for this purpose and had no trouble! The last relay I took care of was the keying relays in the old Navy TCS-12 transmitter I have. If you get across the key contacts when you are sending, the collapsing relay coil fields will give you quite a belt! Diode installed and no more problems! 73, Sandy W5TVW - Original Message - From: Jack Smith jack.sm...@cliftonlaboratories.com To: 'Elecraft' elecraft@mailman.qth.net Sent: Wednesday, April 08, 2009 1:22 PM Subject: [Elecraft] Can a 1N4007 Be an Effective Relay Snubber? To answer, I hope definitively, the question is a 1N4007 power diode too slow to be used as a relay coil snubber, I've updated my December 2007 diode turn-on time measurements with data taken this morning showing the effectiveness of (a) no snubber; (b) 1N4148 snubber and (c) 1N4007 snubber with a typical small relay switched by a 2N7000 MOSFET transistor. I've also looked at the how much the relay release time lengthens when a snubber is added. (Of course, the specifics are dependent upon the particular relay but the concepts are similar.) The details are at http://www.cliftonlaboratories.com/diode_turn-on_time.htm The Cliff's Notes version is that the turn-on (note I said turn-on, not turn-off) time of a 1N4007 diode is sufficiently fast to be a very effective relay snubber. The data also shows that a diode or MOV or other technique should be used to control inductive field decay voltages. Jack K8ZOA www.cliftonlaboratories.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 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.285 / Virus Database: 270.11.47/2047 - Release Date: 04/08/09 05:53:00 __ 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] NR and Audio increase
Hi Wes, are you talking about situation when RX EQ is FLAT? Did you tra some EQ settings and what is as result? Thanks, 73! Lexa, OK1DST Wes Stewart napsal(a): I can almost guarantee this is going to be another one of those, My radio doesn't act like that threads. The reason being, this phenomenon is level sensitive. With a weak signal the noise reduction lowers the signal strength but above a certain level, it increases the signal dramatically. With a -110 dBm signal (1000 Hz beat note) turning on NR (F1-1) reduces the audio signal 6 dB. At -100 dBm input, NR *increases* the signal 11 dB. At -90 dBm it's up 16 dB. Wes N7WS --- On Wed, 4/8/09, Merv Schweigert k...@flex.com wrote: From: Merv Schweigert k...@flex.com The post from BA4RF etc about the NR causing the audio to blast, I mentioned I do not work SSB but tried went to SSB and confirmed the increase in audio, well its on all modes as far as I can tell, to be more truthfull I do not use NR as I find it to non effective to CW work at least the for what I want, If you have a decent signal strength CW signal tuned to the pitch setting and hit NR with a setting of 4 the audio increases dramatically, I tried it also listening to AM broad cast on 40 meters and had the same increase. So unless its my radio only again the NR function is not working on all modes as of the last couple updates. AGC updates effected the NR in some fashion? I did not try changing any of the AGC settings to see if they made any difference. 73 Merv KH7C __ 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] Can a 1N4007 Be an Effective Relay Snubber?
To answer, I hope definitively, the question is a 1N4007 power diode too slow to be used as a relay coil snubber, Just curious -- over the years, I've seen references to the main purpose of the snubber diode being used; (1) to decrease the action time of the relay, since the decaying flux of the relay coil tends to keep the contacts engaged (NO), or disengaged (NC) longer than necessary after voltage is removed from the coil; and (2) to primarily protect a solid-state switching device (e.g., an open NPN collector) from damage, also being caused by the snap of the decaying flux of the relay coil. I realize both uses of the diode are valid, but it seems that unless there's an extremely high flux developed by coil, the primary purpose of the diode is for relay speed, rather than switching device protection. Paul, W9AC __ 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 Frequent Frier Club
the Kick discussions responding to my question about why caps would fail in the low-band filter relay firing circuits on my K2/KPA100 have been very interesting. That there could be such a kick was not a surprise to me so much as that it could be so enthusiastic. Don Wilhelm reports that the relay driver in the kpa100 has such diodes. Where? inside the relay enclosure? It doesn't seem like shunting off this higher voltage in the octal driver would work more than once. Suppose the diode is in the relay. Because some of these diodes may have failed due to the excitement of past ESD events, how would I check to see which ones were ok? Would the Diode checker on my fluke check a circuit which had both a coil and a diode - I;m assuming they would be parallel. Or is this whole line of reasoning nuts? Should I go back to idea of stocking up on 100 volt caps and replacing all of them the next time one fails? 73 AI4TO John Ferguson M/V Arcadian **New Deals on Dell Netbooks – Now starting at $299 (A HREF=http://pr.atwola.com/promoclk/100126575x1219939010x1201342897/aol?redir=http:%2F%2Fa d.doubleclick.net%2Fclk%3B213771626%3B35379597%3Bw) __ 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] Can a 1N4007 Be an Effective Relay Snubber?
The quick test I did today used a common 2N7000 MOSFET to switch a physically small relay typical of those used in ham gear. I think this is a reasonably common arrangement and I've used it in the past myself. The turn-off voltage exceeds the 2N7000's maximum permitted source-drain voltage of 60 volts. What happens is that the 2N7000 breaks down at 70-75 volts and acts like a Zener diode. I'll leave it to the designer to decide whether it's a good thing or a bad thing to have the 2N7000 break down with every diode switch cycle. I don't recall seeing a caution in the 2N7000 data sheet recommending that the device not be operated in a mode that causes it to break down but it seems to me that it isn't a good idea for a reliable design. The relay coil resistance will limit the peak current through the 2N7000 when in break down mode, but it still leaves me uncomfortable. Jack Paul Christensen wrote: To answer, I hope definitively, the question is a 1N4007 power diode too slow to be used as a relay coil snubber, Just curious -- over the years, I've seen references to the main purpose of the snubber diode being used; (1) to decrease the action time of the relay, since the decaying flux of the relay coil tends to keep the contacts engaged (NO), or disengaged (NC) longer than necessary after voltage is removed from the coil; and (2) to primarily protect a solid-state switching device (e.g., an open NPN collector) from damage, also being caused by the snap of the decaying flux of the relay coil. I realize both uses of the diode are valid, but it seems that unless there's an extremely high flux developed by coil, the primary purpose of the diode is for relay speed, rather than switching device protection. Paul, W9AC __ 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] K2 Frequent Frier Club
John, I guess no-one except myself looked at the data sheets for the drivers. They clearly show the snubber diodes. Do a Google search for 'ULN2803 datasheet' and/or 'TD62083AP datasheet' if you need to see the diodes. The snubber diodes are in the octal relay driver chip, and yes, they will work more than once unless the driver chip is fried. If you look at the data generated by Jack Smith and posted just today, you will find that the inductive kick voltage will be snubbed at about 14.4 volts, so the 50 volt capacitors should be fine. Your prior ESD problems do present an uncommon set of events, and based on that fact, you may want to go with the 100 volt caps, but I do not believe they are necessary. 73, Don W3FPR jferg...@aol.com wrote: the Kick discussions responding to my question about why caps would fail in the low-band filter relay firing circuits on my K2/KPA100 have been very interesting. That there could be such a kick was not a surprise to me so much as that it could be so enthusiastic. Don Wilhelm reports that the relay driver in the kpa100 has such diodes. Where? inside the relay enclosure? It doesn't seem like shunting off this higher voltage in the octal driver would work more than once. Suppose the diode is in the relay. Because some of these diodes may have failed due to the excitement of past ESD events, how would I check to see which ones were ok? Would the Diode checker on my fluke check a circuit which had both a coil and a diode - I;m assuming they would be parallel. Or is this whole line of reasoning nuts? Should I go back to idea of stocking up on 100 volt caps and replacing all of them the next time one fails? 73 AI4TO John Ferguson M/V Arcadian **New Deals on Dell Netbooks – Now starting at $299 (A HREF=http://pr.atwola.com/promoclk/100126575x1219939010x1201342897/aol?redir=http:%2F%2Fa d.doubleclick.net%2Fclk%3B213771626%3B35379597%3Bw) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.47/2047 - Release Date: 04/08/09 05:53:00 __ 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] VP6DX Card received today
I got mine in the mail today. It came from Germany? Mike W0MU A slip of the foot you may soon recover, but a slip of the tongue you may never get over. Ben Franklin __ 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] VP6DX Card received today
Got mine a couple of weeks ago - also from Germany. Took a few emails though. Bob W6VY - Original Message - From: W0MU Mike Fatchett w...@w0mu.com To: elecraft@mailman.qth.net Sent: Wednesday, April 08, 2009 3:32 PM Subject: [Elecraft] VP6DX Card received today I got mine in the mail today. It came from Germany? Mike W0MU A slip of the foot you may soon recover, but a slip of the tongue you may never get over. Ben Franklin __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.285 / Virus Database: 270.11.47/2047 - Release Date: 04/08/09 05:53:00 __ 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] Can a 1N4007 Be an Effective Relay Snubber?
Hi, I have used the diode snubber in all designs of relay control from small reed to large contactors. I usually check the series resistance of the relay and the non solid state device activation and measure the voltage kick. I then use ohms law to determine the peak current that would occur against the relay resistance and size the diode accordingly. Most of the time the 1N4000 series are well suited for small relay applications. When in doubt, measure the relay parameters.. Mel, K6KBE --- On Wed, 4/8/09, Jack Smith jack.sm...@cliftonlaboratories.com wrote: From: Jack Smith jack.sm...@cliftonlaboratories.com Subject: Re: [Elecraft] Can a 1N4007 Be an Effective Relay Snubber? To: Paul Christensen w...@arrl.net Cc: 'Elecraft' elecraft@mailman.qth.net Date: Wednesday, April 8, 2009, 2:43 PM The quick test I did today used a common 2N7000 MOSFET to switch a physically small relay typical of those used in ham gear. I think this is a reasonably common arrangement and I've used it in the past myself. The turn-off voltage exceeds the 2N7000's maximum permitted source-drain voltage of 60 volts. What happens is that the 2N7000 breaks down at 70-75 volts and acts like a Zener diode. I'll leave it to the designer to decide whether it's a good thing or a bad thing to have the 2N7000 break down with every diode switch cycle. I don't recall seeing a caution in the 2N7000 data sheet recommending that the device not be operated in a mode that causes it to break down but it seems to me that it isn't a good idea for a reliable design. The relay coil resistance will limit the peak current through the 2N7000 when in break down mode, but it still leaves me uncomfortable. Jack Paul Christensen wrote: To answer, I hope definitively, the question is a 1N4007 power diode too slow to be used as a relay coil snubber, Just curious -- over the years, I've seen references to the main purpose of the snubber diode being used; (1) to decrease the action time of the relay, since the decaying flux of the relay coil tends to keep the contacts engaged (NO), or disengaged (NC) longer than necessary after voltage is removed from the coil; and (2) to primarily protect a solid-state switching device (e.g., an open NPN collector) from damage, also being caused by the snap of the decaying flux of the relay coil. I realize both uses of the diode are valid, but it seems that unless there's an extremely high flux developed by coil, the primary purpose of the diode is for relay speed, rather than switching device protection. Paul, W9AC __ 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 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] New SSB Squelch function
I downloaded the latest beta with the squelch and tried to set it up, but I wonder if there is something about it that I don't understand, or need to adjust differently. I was hoping I could basically set the squelch with the RF/SQL knob on the front panel...crank it all the way clockwise for full on with no squelch (for trying to detect weak signals in the noise) and then back it off as desired to set the squelch threshold for the strength of the signals required to break the squelch. However, in my setup it seems to function just the opposite! The squelch is always on when the RF/SQL control is fully clockwise, and when I back off on it, it OPENS the squelch as some signal level greater than the no-signal noise level. How do you adjust it to listen with the RF gain fully open so you can hear the noise level? Right now, the only solution I have been able to find is to disable the squelch entirely in the CONFIG. MNI TNX for any guidance! VY 73, Lance -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8) P.O. Box 73 Frenchtown, MT 59834 USA QTH: DN27UB TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj 2m DXCC #11/6m DXCC #815 __ 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] Can a 1N4007 Be an Effective Relay Snubber? [END of Thread]
Let's end this thread for now. I think we've pretty much beaten it to death. ;-) 73, Eric WA6HHQ Elecraft List Moderator __ 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] New SSB Squelch function
Lance, You have your choice of either an RF gain control OR a Squelch control (but if you do not have the subreceiver, you can have both). If you choose to have the squelch control, then the RF gain can be handled by using the attenuator and the preamp, and the AGC will also work to limit the RF Gain when listening to strong signals. All Squelch controls I have used conform to the way the K3 Squelch control works - it controls the level at which the squelch opens. Think of it as being numbered 1 to 9 (like the S-meter scale). When at position 2, signals greater than S-2 will open the squelch, but if set to 9, only signals above S-9 will open it. The numbers I have used are only for illustration, there is no exact correlation that I know about. If you do not have the subreceiver installed, you can set the CCONFIG menu SQ MAIN = Sub Pot and you can have the RF gain control on the main knob and the squelch on the sub knob. Yes, the same is possible with the subRX installed (set both SQ MAIN and SQ SUB to Sub Pot, but you then have no RF gain control on the sub. 73, Don W3FPR Lance Collister, W7GJ wrote: I downloaded the latest beta with the squelch and tried to set it up, but I wonder if there is something about it that I don't understand, or need to adjust differently. I was hoping I could basically set the squelch with the RF/SQL knob on the front panel...crank it all the way clockwise for full on with no squelch (for trying to detect weak signals in the noise) and then back it off as desired to set the squelch threshold for the strength of the signals required to break the squelch. However, in my setup it seems to function just the opposite! The squelch is always on when the RF/SQL control is fully clockwise, and when I back off on it, it OPENS the squelch as some signal level greater than the no-signal noise level. How do you adjust it to listen with the RF gain fully open so you can hear the noise level? Right now, the only solution I have been able to find is to disable the squelch entirely in the CONFIG. MNI TNX for any guidance! VY 73, Lance __ 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] Can a 1N4007 Be an Effective Relay Snubber?
The flux can be very considerable! As the flux collapses it can induce a very high voltage transient across the coil far exceeding the voltage produced to energize the relay. There is a certain amount of energy stored there in many instances. The 'back EMF pulse can wreak havoc with solid state gear and shock the hell out of someone who happens to be across the circuit when the field collapses! Seems like I was havinga discussion of neon tubes (NE-2?) across relay coils in the old ARC-27 UHF aircraft transceiver (a true boat anchor piece of gear!). These were probably primarily to limit the pulse to whatever the ionization potential of the NE-2 is. (probably around 60-65 volts?) Silicon diodes didn't exist in those days or they probably would have been used instead. 73, Sandy W5TVW - Original Message - From: Paul Christensen w...@arrl.net To: 'Elecraft' elecraft@mailman.qth.net Sent: Wednesday, April 08, 2009 4:11 PM Subject: Re: [Elecraft] Can a 1N4007 Be an Effective Relay Snubber? To answer, I hope definitively, the question is a 1N4007 power diode too slow to be used as a relay coil snubber, Just curious -- over the years, I've seen references to the main purpose of the snubber diode being used; (1) to decrease the action time of the relay, since the decaying flux of the relay coil tends to keep the contacts engaged (NO), or disengaged (NC) longer than necessary after voltage is removed from the coil; and (2) to primarily protect a solid-state switching device (e.g., an open NPN collector) from damage, also being caused by the snap of the decaying flux of the relay coil. I realize both uses of the diode are valid, but it seems that unless there's an extremely high flux developed by coil, the primary purpose of the diode is for relay speed, rather than switching device protection. Paul, W9AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.285 / Virus Database: 270.11.47/2047 - Release Date: 04/08/09 05:53:00 __ 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] New SSB Squelch function
Don - A couple of minor clarifications: 1. If you dedicate the Sub RF gain knob to adjust Squelch, you get a combined RF gain for both RXs on the main RF gain knob. 2. If squelch is fully counter clockwise, it is always open with no threshold. This is all covered in the latest f/w release notes and the presently-shipping K3 manual. 73, Eric WA6HHQ - __ 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] NR AGC
Before, activating NR reduced the signal strength and sometimes drastically. A few of us asked to put NR and NTCH inside the AGC loop to keep teh signal strength even. It seems as if the firmware upgrade just increased gain with NR but NTCH is definitely not inside the AGC loop yet. Ignacy hello all, Anyone try this: listening a S7 to S9 signal (SSB) on any band with your headphone, at this time, try to enable NR, you will hear a really LOUD audio! Maybe need firmware upgrade to fix it. 73s David BA4RF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/NR---AGC-tp2602826p2608887.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] New SSB Squelch function
Thanks for the clarifications Eric. I do not have the subRX, so I assumed and we all know what that does. You are correct about the SQL knob at zero. I do mentally relate it on a relative scale basis to the S-meter - the higher it is set, the stronger the signal must be to open the squelch. 73, Don W3FPR Eric Swartz - WA6HHQ, Elecraft wrote: Don - A couple of minor clarifications: 1. If you dedicate the Sub RF gain knob to adjust Squelch, you get a combined RF gain for both RXs on the main RF gain knob. 2. If squelch is fully counter clockwise, it is always open with no threshold. This is all covered in the latest f/w release notes and the presently-shipping K3 manual. 73, Eric WA6HHQ - __ 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: Audio Blast attack
Today I was listening around on 40m cw and messing with the Shift and Width knobs. I had the NR turned on. I was running the Shift up and down the range just casually listening to the noise pitch change. Retired people have this kind of time. I had the width down to 50 hz then I hit the FIL button to open things back up again and that's when it happened. The most horrendous blast of audio I've ever heard. My face was about 12 from the 5 x 6 speaker and it almost blew my glasses off. I have no doubt it was FULL AF gain. I jumped and nearly soiled myself. My first instinct was to quickly turn down the AF gain. I just barely turned the AF gain down and everything went back to normal. After my heart calmed down I tried to retrace my steps but have not been able to duplicate it. I guess it was a CPU glitch or something but it sure knocked a few days off my life. I had this happen to an Orion several times back before they got some of the bugs out of it. At least I could duplicate and report it but this one has me baffled. Steve N4LQ n...@carolina.rr.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Audio Blast attack
I had something similar (or perhaps the same) happen to me a few days ago, only I had headphones on. Likewise I don't remember the exact circumstance. I do remember getting yelled at by the XYL in the next room, however. And I was never even in the Navy. --- On Wed, 4/8/09, Steve Ellington n...@carolina.rr.com wrote: From: Steve Ellington n...@carolina.rr.com Subject: [Elecraft] K3: Audio Blast attack To: Elecraft@mailman.qth.net Date: Wednesday, April 8, 2009, 8:05 PM Today I was listening around on 40m cw and messing with the Shift and Width knobs. I had the NR turned on. I was running the Shift up and down the range just casually listening to the noise pitch change. Retired people have this kind of time. I had the width down to 50 hz then I hit the FIL button to open things back up again and that's when it happened. The most horrendous blast of audio I've ever heard. My face was about 12 from the 5 x 6 speaker and it almost blew my glasses off. I have no doubt it was FULL AF gain. I jumped and nearly soiled myself. My first instinct was to quickly turn down the AF gain. I just barely turned the AF gain down and everything went back to normal. After my heart calmed down I tried to retrace my steps but have not been able to duplicate it. I guess it was a CPU glitch or something but it sure knocked a few days off my life. I had this happen to an Orion several times back before they got some of the bugs out of it. At least I could duplicate and report it but this one has me baffled. Steve N4LQ n...@carolina.rr.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft 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: Audio Blast attack
Steve Ellington wrote: ... had the width down to 50 hz then I hit the FIL button to open things back up again and that's when it happened Steve, Things like this should *never* happen -- our apologies. Please send me your firmware revision numbers (use CONFIG:FW REVS) and a list of all the receiver settings you were using, if possible, and we'll try to duplicate and correct it. It would also be helpful to know what the band noise and signals were like at the time. 73, Wayne N6KR --- http://www.elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Audio Blast attack
... had the width down to 50 hz then I hit the FIL button to open things back up again and that's when it happened Things like this should *never* happen -- our apologies. Please send me your firmware revision numbers (use CONFIG:FW REVS) and a list of all the receiver settings you were using, and in particular your AGC settings (SLP, THR) and if there was a loud signal, or loud high-pitched signal that was suddenly in the opened-up passband, and your NR settings in effect at the time. Also, was the blast a loud burst of noise (like the gain was suddenlky turned up momentarily), or was it more like a shriek (a high pitched, perhaps unstable, tone)? 73, Lyle KK7P __ 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] AM RX bandwith
OK thanks info. / Jim SM2EKM -- Don Wilhelm wrote: Jim, The change is only in the displayed width. Before it was the IF __ 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 U10C Oscillating
On my K2 (#3014) I hear signals and noises while tuning across 160m with the antenna disconnected. The worst is a strong but unstable signal that moves from about 1850 kHz to about 1910 kHz during about 15 minutes after I switch on the radio. I accidentally traced the signal to U10C on the control board: the signal jumped when my finger got near the left end of resistor pack RP2. (U10C appears to be a buffer for the V BIAS-XFIL line.) The signal is several kHz wide and resembles hash from a dimmer or switching power supply. I have verified the U10 circuit resistors and voltages as nominally correct. U10D, an identical circuit for the V BFO line has pretty clean dc at its output. Has anyone else seen this? Am I correct in concluding that I should replace U10? 73, David, NM5U __ 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
