[Elecraft] K3 numbers
Hi all I'm writing a short article about the K3 for my club magazine. I'd like to include a couple of statistics:- How many K3's have been produced ? How many were kit form ? Ball park figures only. Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 6873 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.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] [K3] New 472kHz LF band
I see from the report of WRC-12 that a new band 472-479kHz is to be allocated on a world-wide basis with an eirp of 5W (1W in some countries). The K3 receiver currently goes down to 490kHz. Is there any likelihood that this could be extended down to cover the new band? http://www.rsgb.org/news/articlelinks.php?id=0284 73 de David G4DMP -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ 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] OT Ham Radio Presentation to local 4 H club
My kids are involved in 4 H. I'll be hosting this Sunday's meeting and giving a talk about HAM radio. The talk will be followed by on air activity, which will be more fun if we find some stations to work! See below if you'd like to encourage some kids about our hobby. What: HAM station demonstration Audience: local 4 H club (mostly kids aged 10 - 14) Station: KD0HII, Des Moines, Iowa Date: Sunday, Feb. 12, 2012 Time: approx 03:30 CT (2130 Zulu) - might start a few minutes later, depends on various factors. On Air: Hope to call CQ and let the kids work some stations Frequency: on or about 14.3035 73 Brian KD0HII __ 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 synthesizer problem
Has he done a cold reset? It really sounds like there is no antenna attached in that band segment. Has he tried simply removing the antenna/dummy load connection and see if the results are the same? If so, then clearly the antenna choice needs to be examined. I'd be willing to bet his K3 has an antenna tuner. 73 de Brian/K3KO On 2/9/2012 9:14 PM, David Gilbert wrote: You've never said whether or not you can receive OK in those band segments. If so, I doubt that the synth board would be the problem. Dave AB7E On 2/9/2012 5:07 PM, Tom Kramer wrote: I am a new person in this group and I will admit that I have not looked at many of the hundreds of previous posts so I will apologize in advance for being a bit lazy if this topic has been dealt with before. I have a home assembled K3 SN 4210 that has developed a most annoying problem. I have exchanged a number of emails with Gary Surrency about this with basically no conclusion and an apparent lack of desire to solve it. I discovered that when attempting to transmit between 24,910.0 and 24,930.0 the swr bar graph shows a pulsating full scale reading and the dial reads SWR between 9:1 and 12:1, and power output of maybe 20 watts. Outside this range SWR is normal and power output is full 100 watts. This can be into a resonant antenna or dummy load. I have done the synthesizer calibration preceded of course by the ADC ref calibration multiple times. I sent Gary a list of all the parameters outputted by these tests and he says all look to be in the normal range. I have since discovered that the same problem appears between 28,500 and 29,000 Khz as well. I am trying to keep this somewhat short so I didn't supply every detail of the testing. Have other people experienced this and what if any solution did you find? Gary suggests a new synthesizer board @ $200+ but no at this point there is no guarantee that will fix the problem. I have made arrangements to test this with another K3 next week, but curious if this problem is something new. Tom NQ7R Casa Grande, AZ __ 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 message. Checked by AVG - www.avg.com Version: 10.0.1424 / Virus Database: 2112/4799 - Release Date: 02/09/12 __ 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] New 472kHz LF band
David G4DMP said Is there any likelihood that this could be extended down to cover the new band? Failing that how about an Elecraft designed, fully filtered, fully integrated, high stability, VLF up converter covering 5KHz to 500KHz. This would cater for the Natural Radio listeners, Alpha stations, numerous high power transmissions used by hams as propagation beacons, 136KHz band, NDB hunters and the new 472KHz allocation. Trevor G0KTN Original Message I see from the report of WRC-12 that a new band 472-479kHz is to be allocated on a world-wide basis with an eirp of 5W (1W in some countries). The K3 receiver currently goes down to 490kHz. Is there any likelihood that this could be extended down to cover the new band? http://www.rsgb.org/news/articlelinks.php?id=0284 73 de David G4DMP -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ 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] New 472kHz LF band
I very much doubt that Elecraft would be interested in producing such a device, Trevor, particularly as similar VLF up converters are already available. My query was really questioning whether the existing K3 could be adapted for the forthcoming new band. 73 de David G4DMP In a recent message, Trevor Smithers tsmith...@cix.co.uk writes how about an Elecraft designed, fully filtered, fully integrated, high stability, VLF up converter covering 5KHz to 500KHz. -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + __ 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] K3/0 and Remoterig
Do you just call to order or wait for a posting? __ 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 K2 simultaneous on serial to USB cables to computer
I have both my K2 and K3 connected via serial to USB cables, but I cannot get the computer to recognize the K2. The K3 is connected via the Elecraft serial to USB cable and works fine. The K2 uses a serial to USB adapter, but the computer refuses to recognize the K2 adapter and insists on going to the K3. I imagine because both are called serial to USB adapters. I know this is more of a computer question than a K2/K3 issue and maybe the computer can't recognize two serial to USB connections. Any recommendations for forcing the computer to recognize the K2 or using a different adapter? The cable from IO2 on the K2 is correct. The serial to USB adapter for the K2 may be inferior. Even when I disconnect the K3 serial to USB cable, the computer will still not recognize the K2 connection. Thanks. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-K2-simultaneous-on-serial-to-USB-cables-to-computer-tp7272705p7272705.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] K3 and K2 simultaneous on serial to USB cables to computer
Ron - You might consider getting a 4 port USB to Serial adapter. I have my IC-7000, K2, and W1 wattmeter connected to one and all three are accessbile, each with its own com port assignment. The one I purchased is based on the FTDI chipset, like the Elecraft KUSB adapter, and was abt $44 from Amazon. Search for: 4 Port RS232 FT4232HL Professional USB to Serial Adapter Chip AE5KA On Fri, Feb 10, 2012 at 8:03 AM, KM4VX ronce...@earthlink.net wrote: I have both my K2 and K3 connected via serial to USB cables, but I cannot get the computer to recognize the K2. The K3 is connected via the Elecraft serial to USB cable and works fine. The K2 uses a serial to USB adapter, but the computer refuses to recognize the K2 adapter and insists on going to the K3. I imagine because both are called serial to USB adapters. I know this is more of a computer question than a K2/K3 issue and maybe the computer can't recognize two serial to USB connections. Any recommendations for forcing the computer to recognize the K2 or using a different adapter? The cable from IO2 on the K2 is correct. The serial to USB adapter for the K2 may be inferior. Even when I disconnect the K3 serial to USB cable, the computer will still not recognize the K2 connection. Thanks. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-K2-simultaneous-on-serial-to-USB-cables-to-computer-tp7272705p7272705.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 __ 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 K2 simultaneous on serial to USB cables to computer
Chip, Your post was epic. This device is exactly what I was looking for my set up with my K3, RCS-1, the LP Panadapter and my soon to be installed SteppIR controller. I ordered it from Amazon two minutes after I read your post. The Elecraft reflector rules! Thanks, Keith AG6AZ __ 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 K2 simultaneous on serial to USB cables tocomputer
In the KPA100 Manual there is a warning not to use standard RS-232 cables between the K2 SIO and a PC (only pins 2, 3 and 5 are normally connected) Would it not be a similar problem using a serial to USB adapter? Poul-Erik OZ4UN -Oprindelig meddelelse- Fra: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] På vegne af Chip Stratton Sendt: 10. februar 2012 15:32 Til: KM4VX Cc: elecraft@mailman.qth.net Emne: Re: [Elecraft] K3 and K2 simultaneous on serial to USB cables tocomputer Ron - You might consider getting a 4 port USB to Serial adapter. I have my IC-7000, K2, and W1 wattmeter connected to one and all three are accessbile, each with its own com port assignment. The one I purchased is based on the FTDI chipset, like the Elecraft KUSB adapter, and was abt $44 from Amazon. Search for: 4 Port RS232 FT4232HL Professional USB to Serial Adapter Chip AE5KA On Fri, Feb 10, 2012 at 8:03 AM, KM4VX ronce...@earthlink.net wrote: I have both my K2 and K3 connected via serial to USB cables, but I cannot get the computer to recognize the K2. The K3 is connected via the Elecraft serial to USB cable and works fine. The K2 uses a serial to USB adapter, but the computer refuses to recognize the K2 adapter and insists on going to the K3. I imagine because both are called serial to USB adapters. I know this is more of a computer question than a K2/K3 issue and maybe the computer can't recognize two serial to USB connections. Any recommendations for forcing the computer to recognize the K2 or using a different adapter? The cable from IO2 on the K2 is correct. The serial to USB adapter for the K2 may be inferior. Even when I disconnect the K3 serial to USB cable, the computer will still not recognize the K2 connection. Thanks. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-K2-simultaneous-on-serial- to-USB-cables-to-computer-tp7272705p7272705.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 __ 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] Just a head's up on hacked email address
It appears Willis 'Cookie' Cooke, K5EWJ email has been hacked. I just received the I've been mugged in London phishing email. Seen this one several times before... 73, Julius n2wn - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2#4455 Elecraft K3/100 #366 Elecraft K3/100 -- View this message in context: http://elecraft.365791.n2.nabble.com/Just-a-head-s-up-on-hacked-email-address-tp7272980p7272980.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] Just a head's up on hacked email address
I have indeed been attacked. I am not in London and I am not in need of cash any more than usual. Sorry about the intrusion. Willis 'Cookie' Cooke K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart From: Julius Fazekas n2wn phriend...@yahoo.com To: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 9:24 AM Subject: [Elecraft] Just a head's up on hacked email address It appears Willis 'Cookie' Cooke, K5EWJ email has been hacked. I just received the I've been mugged in London phishing email. Seen this one several times before... 73, Julius n2wn - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2 #4455 Elecraft K3/100 #366 Elecraft K3/100 -- View this message in context: http://elecraft.365791.n2.nabble.com/Just-a-head-s-up-on-hacked-email-address-tp7272980p7272980.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 __ 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 numbers
My friend RV9CTD got his K3/10 kit on the 7th of February. Two days later he is on the air. His K3 serial number is 6166. Just for your article, Elecraft refuses sending assembled equipment to Russia because such parcels are often stopped and returned to sender by Russian custom. Anything sent in kit form has no problems. Looks like Russian customs want Russian hams to turn into trained kit builders. 73, Igor UA9CDC - Original Message - From: John Lemay j...@carltonhouse.eclipse.co.uk To: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 3:44 PM Subject: [Elecraft] K3 numbers Hi all I'm writing a short article about the K3 for my club magazine. I'd like to include a couple of statistics:- How many K3's have been produced ? How many were kit form ? Ball park figures only. Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 6873 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.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
[Elecraft] Monitor (OT)
The CRT on my shack computer is dying and I am in the market for a new 23-24 flat screen. However there is very little (read none) information relative to RFI. I have heard anecdotal stories that LG is good and Samsung is RFI susceptible. But they are pure hearsay. I would appreciate any information about or experience with which monitors work well in a hamshack environment. If you don't want to take up reflector bandwidth, reply direct. I will summarize if necessary. David K0LUM __ 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] OK to Use Quantum Loop v2.0 Active Antenna w/KX3 for MW Receive?
Would the use of the Quantum Loop v2.0 active antenna with the KX-3 be advisable? Obviously, it would not be acceptable for transmit, but would such a device be safe bet for MW receive? (My concern would be that it not damage the KX-3.) It has been able to co-exist just fine with my Drake R8B, i.e., no overload, etc. As a disabled ham who also enjoys MW DXing, I'd love for the KX-3 to be my single solution for both hobbies, as I am often confined to bed for protracted periods. Thanks for any help you can provide. -- View this message in context: http://elecraft.365791.n2.nabble.com/OK-to-Use-Quantum-Loop-v2-0-Active-Antenna-w-KX3-for-MW-Receive-tp7273071p7273071.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] Monitor (OT)
Using an ASUS from Newegg with absolutely no problems. I think the model is VH238 or 238H, manufactured Dec 2010. From: David Christ radio...@mchsi.com To: Elecraft@mailman.qth.net Sent: Fri, February 10, 2012 9:36:58 AM Subject: [Elecraft] Monitor (OT) The CRT on my shack computer is dying and I am in the market for a new 23-24 flat screen. However there is very little (read none) information relative to RFI. I have heard anecdotal stories that LG is good and Samsung is RFI susceptible. But they are pure hearsay. I would appreciate any information about or experience with which monitors work well in a hamshack environment. If you don't want to take up reflector bandwidth, reply direct. I will summarize if necessary. David K0LUM __ 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] Monitor (OT)
I think your information is incorrect? I use a Samsung SyncMaster 932BW (24) with the left edge of it sitting four inches from my Alpha 9500 amp that I certainly do run at the full 1500 watts output during contest. I have run Acer 15 and NEC 17 and Samsung 27 sitting next to my amp and have never had any indication whatsoever of RFI issues. I do have all of my equipment (including PC) bonded to a rather complete ground system that is tied into my tower ground system and my AC power system. Tom - W4BQF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Christ Sent: Friday, February 10, 2012 10:37 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] Monitor (OT) The CRT on my shack computer is dying and I am in the market for a new 23-24 flat screen. However there is very little (read none) information relative to RFI. I have heard anecdotal stories that LG is good and Samsung is RFI susceptible. But they are pure hearsay. I would appreciate any information about or experience with which monitors work well in a hamshack environment. If you don't want to take up reflector bandwidth, reply direct. I will summarize if necessary. David K0LUM __ 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] Monitor (OT)
Just because one Samsung model doesn't have a problem doesn't mean that all Samsungs are OK! I bought a LCD monitor from Costco a couple of years ago - I'm fairly sure it was a Samsung. It didn't have real buttons, but some sort of touch-sensitive mechanism. Unfortunately it also turned out to be RF-sensitive, and would turn the monitor off, or bring up the config menu, etc., when I transmitted on certain frequencies. I returned it, and bought a Viewsonic, which has real buttons, and have had no problems with that one. YMMV, of course ~iain / N6ML On Fri, Feb 10, 2012 at 8:15 AM, Tommy Alderman alderm...@windstream.net wrote: I think your information is incorrect? I use a Samsung SyncMaster 932BW (24) with the left edge of it sitting four inches from my Alpha 9500 amp that I certainly do run at the full 1500 watts output during contest. I have run Acer 15 and NEC 17 and Samsung 27 sitting next to my amp and have never had any indication whatsoever of RFI issues. I do have all of my equipment (including PC) bonded to a rather complete ground system that is tied into my tower ground system and my AC power system. Tom - W4BQF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Christ Sent: Friday, February 10, 2012 10:37 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] Monitor (OT) The CRT on my shack computer is dying and I am in the market for a new 23-24 flat screen. However there is very little (read none) information relative to RFI. I have heard anecdotal stories that LG is good and Samsung is RFI susceptible. But they are pure hearsay. I would appreciate any information about or experience with which monitors work well in a hamshack environment. If you don't want to take up reflector bandwidth, reply direct. I will summarize if necessary. David K0LUM __ 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
Re: [Elecraft] K3 synthesizer problem NQ7R
Try re-tuning the KAT3 auto tuner, or bypassing it. Try tightening the 3 LPA screws on the bottom (the ones with lock washers). Keith On 2/9/2012 4:07 PM, Tom Kramer wrote: I am a new person in this group and I will admit that I have not looked at many of the hundreds of previous posts so I will apologize in advance for being a bit lazy if this topic has been dealt with before. I have a home assembled K3 SN 4210 that has developed a most annoying problem. I have exchanged a number of emails with Gary Surrency about this with basically no conclusion and an apparent lack of desire to solve it. I discovered that when attempting to transmit between 24,910.0 and 24,930.0 the swr bar graph shows a pulsating full scale reading and the dial reads SWR between 9:1 and 12:1, and power output of maybe 20 watts. Outside this range SWR is normal and power output is full 100 watts. This can be into a resonant antenna or dummy load. I have done the synthesizer calibration preceded of course by the ADC ref calibration multiple times. I sent Gary a list of all the parameters outputted by these tests and he says all look to be in the normal range. I have since discovered that the same problem appears between 28,500 and 29,000 Khz as well. I am trying to keep this somewhat short so I didn't supply every detail of the testing. Have other people experienced this and what if any solution did you find? Gary suggests a new synthesizer board @ $200+ but no at this point there is no guarantee that will fix the problem. I have made arrangements to test this with another K3 next week, but curious if this problem is something new. Tom NQ7R Casa Grande, AZ __ 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] Monitor (OT)
I think it's more important to consider the proximity of the monitor to the aerial, rather than the amplifier. With a bit of luck, it's the aerial doing the transmitting and receiving, not the amplifier. This brings several variables into the equation, such as aerial gain and direction (if any), height and distance from the shack. Add to that short list; power levels, receive sensitivity, frequency in use and background noise levels These variables will no doubt ensure a host of different answers for similar monitors ! John G4ZTR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of iain macdonnell - N6ML Sent: 10 February 2012 16:19 To: Tommy Alderman Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Monitor (OT) Just because one Samsung model doesn't have a problem doesn't mean that all Samsungs are OK! I bought a LCD monitor from Costco a couple of years ago - I'm fairly sure it was a Samsung. It didn't have real buttons, but some sort of touch-sensitive mechanism. Unfortunately it also turned out to be RF-sensitive, and would turn the monitor off, or bring up the config menu, etc., when I transmitted on certain frequencies. I returned it, and bought a Viewsonic, which has real buttons, and have had no problems with that one. YMMV, of course ~iain / N6ML On Fri, Feb 10, 2012 at 8:15 AM, Tommy Alderman alderm...@windstream.net wrote: I think your information is incorrect? I use a Samsung SyncMaster 932BW (24) with the left edge of it sitting four inches from my Alpha 9500 amp that I certainly do run at the full 1500 watts output during contest. I have run Acer 15 and NEC 17 and Samsung 27 sitting next to my amp and have never had any indication whatsoever of RFI issues. I do have all of my equipment (including PC) bonded to a rather complete ground system that is tied into my tower ground system and my AC power system. Tom - W4BQF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Christ Sent: Friday, February 10, 2012 10:37 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] Monitor (OT) The CRT on my shack computer is dying and I am in the market for a new 23-24 flat screen. However there is very little (read none) information relative to RFI. I have heard anecdotal stories that LG is good and Samsung is RFI susceptible. But they are pure hearsay. I would appreciate any information about or experience with which monitors work well in a hamshack environment. If you don't want to take up reflector bandwidth, reply direct. I will summarize if necessary. David K0LUM __ 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 __ Information from ESET NOD32 Antivirus, version of virus signature database 6874 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Information from ESET NOD32 Antivirus, version of virus signature database 6874 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.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 and K2 simultaneous on serial to USB cables to computer
You will need to make a jumper cable between the K2 and your serial-to-USB cable. See Figure 7 on Page 13 of the KIO2 manual for the connections. Bob, N7XY On Feb 10, 2012, at 6:03 AM, KM4VX wrote: I have both my K2 and K3 connected via serial to USB cables, but I cannot get the computer to recognize the K2. The K3 is connected via the Elecraft serial to USB cable and works fine. The K2 uses a serial to USB adapter, but the computer refuses to recognize the K2 adapter and insists on going to the K3. I imagine because both are called serial to USB adapters. I know this is more of a computer question than a K2/K3 issue and maybe the computer can't recognize two serial to USB connections. Any recommendations for forcing the computer to recognize the K2 or using a different adapter? The cable from IO2 on the K2 is correct. The serial to USB adapter for the K2 may be inferior. Even when I disconnect the K3 serial to USB cable, the computer will still not recognize the K2 connection. Thanks. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-K2-simultaneous-on-serial-to-USB-cables-to-computer-tp7272705p7272705.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 __ 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] KPA500 AUX button and RJ-45
Jack et al, I like the way the AUX button is set up. I couln't resist tapping it the first day I had the amp, and it did exactly what Jack said. :o) KUDOs to Jack and the folks that worked on the KPA500 development. Its a job magnificently done. Tom, N5GE The marvel of all history is the patience with which men and women submit to burdens unnecessarily laid upon them by their governments. George Washington. On Thu, 9 Feb 2012 10:13:07 -0800, Jack Brindle jackbrin...@earthlink.net wrote: As I noted in an email to Bruce, the only current use for the AUX button is to tell the K3 that the button has been pushed. The K3 firmware currently then selects the 2 meter transverter. As on the K3, the RJ-45 is used for factory testing and development. Jack B, W6FB [snip] __ 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] sub receiver
You're gonna love it! Tom, N5GE licensed 1976 as WN5QGE The marvel of all history is the patience with which men and women submit to burdens unnecessarily laid upon them by their governments. George Washington. On Thu, 9 Feb 2012 11:40:02 -0600, k...@att.net wrote: I've had my ticket since 1974 (WN4IKG) I have owned over 25 rigs but never had one with two receivers. I 've always worked split with two VFOs but after a few emails from you guys and thinking about it (brain taxing) I can see where the second receiver would be useful. When I was working the HK0NA group, I just transmitted where they said they were listening but they had about a 10 kHz spread so it was a guess whether they would hear me or not. It would be nice to know exactly where they are listening. Thanks for the advice. Love the reflector. Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans rig until this afternoon when UPS comes! I haven't been without a rig in I don't know how long! Its lonely. John KE4D My K3/100 kit arrives tomorrow. I did not order the sub receiver. I have only a vertical here and have some antenna restrictions (height) I use a SteppIR BigIR and it works great for me with my height restriction. So, unless one of you can explain to me why I should have the sub receiver with only one antenna, I'm leaving it the with one! I'm sure I don't understand receiver diversity since I never heard of it until recently. Guide me! John KE4D K3 SN [snip] __ 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] Monitor (OT)
Samsung 27 sitting next to my amp Proximity to your AMP does not matter unless your amp is an un-shielded piece of trash, which I doubt,. What matters is proximity to your ANTENNAS! The only RFI issues I've seen from video monitors of any sort are RF trash that THEY generate. A couple of years ago, I bought a cheapie for my shack that was VERY noisy. I killed it with a multi-turn ferrite choke on the power cable. 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] Source for Type 31 Toroids
I have some interference problems with my receivers and have been reading Jim K9YCs excellent article on the subject. It sounds like type 31 ferrite toroids will be the answer to some of my problems and I'm interestedin buying some. I had always considered Fair-Rite to be the main source of just about everything made of ferrite, and Jim mentions them several times in his article. However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. I'm pretty sure Amidon doesn't have them either. Where else can I look? Any thoughts? Thanks in advance 73, Ken Alexander VE3HLS __ 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] Monitor (OT)
On Fri, Feb 10, 2012 at 10:18 AM, iain macdonnell - N6ML a...@dseven.org wrote: ... it was a Samsung. It didn't have real buttons, but some sort of touch-sensitive mechanism. Unfortunately it also turned out to be RF-sensitive, and would turn the monitor off, or bring up the config menu, etc == Yes, this has been reported on here before. I had the same symptoms with my Samsung XL2370 but my older 2333 with hardware buttons works fine with no problems. Another ham, a VK if I recall, had a soft-button Samsung and fixed the rf sensitivity with a clever trick: He stuck copper foil over the soft buttons and grounded it with a short strap. Tony KT0NY __ 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 synthesizer problem
NQ7R and all, Tom, that does sound like a very odd problem. I Don't remember seeing it discussed previously here. However, your suggestion that Gary Surrency may be lacking in interest to solve it doesn't sound like Gary at all! He has been around the Elecraft scene, almost from inception, and has always been very responsive, and he is very good at identifying problem resolutions! My guess is that he may simply have run out of ideas without being able to get hands on. Not every problem can be solved by email. It also appears that the two of you have exchanged several emails, and that doesn't sound like someone who is not trying to be helpful. I suppose if you have another K3 around, and could substitute one synthesizer board for another that way, you could probably determine whether or not Gary's suggestion is correct. He's probably suggesting that to avoid your having to send the rig to Elecraft for service, but that really may be your best option due to the uncertainty. Maybe you could just send them your synthesizer board and they could test it somehow. That might be even easier, from a shipping standpoint. However, maybe that's not a practical approach for whatever reason. Anyway, I know rig problems are depressing, and I sympathize with your frustration. There's a tendency to feel abused, since everyone else's rig seems to be working fine, but yours isn't! Unfortunately, bad things can happen to good people! However, I sincerely believe you are in better hands with Elecraft than you would be with just about any other manufacturer. When rig problems develop, and you can't fix them yourself, you have to bite the bullet somewhat. You just have to work with them to determine the most expeditious way of resolving the problem. By the way, if I had to guess, I'd bet Gary is probably close to right in his suggestion, but since he can't be positive, he obviously can't give you any guarantees. Unless some other option comes to mind, I'd probably just send the rig in and be done with it. Besides, there is usually the additional benefit of them possibly identifying other anomalies, which they could then deal with without necessitating another trip back and forth. Kind of like getting a 20,000 mile service on your car! Dave W7AQK __ 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] Monitor (OT)
I'm not selling anything and I'm not buying anything! A question was asked about a monitor, which happened to be a Samsung, and I was only providing a firsthand experience that none of my Samsung monitors, or any other brand of monitor that I have used at my station, have had the problems mentioned by the email originator. Of course if one does not put their station together in a manner that minimizes RFI, it possible that NO monitor could withstand that environment. Tom - W4BQF -Original Message- From: John Lemay [mailto:j...@carltonhouse.eclipse.co.uk] Sent: Friday, February 10, 2012 11:48 AM To: 'iain macdonnell - N6ML'; 'Tommy Alderman' Cc: elecraft@mailman.qth.net Subject: RE: [Elecraft] Monitor (OT) I think it's more important to consider the proximity of the monitor to the aerial, rather than the amplifier. With a bit of luck, it's the aerial doing the transmitting and receiving, not the amplifier. This brings several variables into the equation, such as aerial gain and direction (if any), height and distance from the shack. Add to that short list; power levels, receive sensitivity, frequency in use and background noise levels These variables will no doubt ensure a host of different answers for similar monitors ! John G4ZTR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of iain macdonnell - N6ML Sent: 10 February 2012 16:19 To: Tommy Alderman Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Monitor (OT) Just because one Samsung model doesn't have a problem doesn't mean that all Samsungs are OK! I bought a LCD monitor from Costco a couple of years ago - I'm fairly sure it was a Samsung. It didn't have real buttons, but some sort of touch-sensitive mechanism. Unfortunately it also turned out to be RF-sensitive, and would turn the monitor off, or bring up the config menu, etc., when I transmitted on certain frequencies. I returned it, and bought a Viewsonic, which has real buttons, and have had no problems with that one. YMMV, of course ~iain / N6ML On Fri, Feb 10, 2012 at 8:15 AM, Tommy Alderman alderm...@windstream.net wrote: I think your information is incorrect? I use a Samsung SyncMaster 932BW (24) with the left edge of it sitting four inches from my Alpha 9500 amp that I certainly do run at the full 1500 watts output during contest. I have run Acer 15 and NEC 17 and Samsung 27 sitting next to my amp and have never had any indication whatsoever of RFI issues. I do have all of my equipment (including PC) bonded to a rather complete ground system that is tied into my tower ground system and my AC power system. Tom - W4BQF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Christ Sent: Friday, February 10, 2012 10:37 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] Monitor (OT) The CRT on my shack computer is dying and I am in the market for a new 23-24 flat screen. However there is very little (read none) information relative to RFI. I have heard anecdotal stories that LG is good and Samsung is RFI susceptible. But they are pure hearsay. I would appreciate any information about or experience with which monitors work well in a hamshack environment. If you don't want to take up reflector bandwidth, reply direct. I will summarize if necessary. David K0LUM __ 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 __ Information from ESET NOD32 Antivirus, version of virus signature database 6874 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Information from ESET NOD32 Antivirus, version of virus signature database 6874 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post
[Elecraft] WANTED: 2T Generator
Anyone have one they want to part with ? 73, Dick, W1KSZ -- View this message in context: http://elecraft.365791.n2.nabble.com/WANTED-2T-Generator-tp7273774p7273774.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
[Elecraft] KX1 has LED switching noise
My old 2003 KX1 has low level LED/CPU switching noise. The switching noise frequency is lower on L1 and higher (and amplitude higher) on L6 (Brightest Level #6). L4 is about 80 Hz. Maybe the aluminum bypass (C10, C12) capacitors are opening up. i hear it on all bands (I have an 80, 40, 30, 20 meter KX1) and at any battery voltage. Anyone solve this issue? Paul w0rw __ 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 SN 6226
Got it last evening and am on the with cw. I get tx err with my hM2 mike but I'm sure it's something simple. Haven't yet set band power for the KPA500 but that is next. Nice job Elecraft. Nothing missing and other than a cockpit error with the filter set up, no issues. John KE4D K3 SN 6226 KPA500 SN 636 John Veach 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] sub receiver
I was licensed also in 1974 (WN8JSQ) and the K3 was my first new rig. I have never had a radio with 2 receivers till I got the K3. I first had the experience, though, with dual receiver radios at the contest station of K8AZ. I just had to have one. I wear headphones, so I have the DX in my left ear and transmit freq in my right. Oh what heaven it is. I can find the DX's listening Freq. so much faster and easier. Tim Herrick, KQ8M, ex WB8JSQ, WN8JSQ North Coast Contesters k...@kq8m.com K3 Serial #5934 -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@n5ge.com Sent: Friday, February 10, 2012 12:21 PM To: k...@att.net Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] sub receiver You're gonna love it! Tom, N5GE licensed 1976 as WN5QGE The marvel of all history is the patience with which men and women submit to burdens unnecessarily laid upon them by their governments. George Washington. On Thu, 9 Feb 2012 11:40:02 -0600, k...@att.net wrote: I've had my ticket since 1974 (WN4IKG) I have owned over 25 rigs but never had one with two receivers. I 've always worked split with two VFOs but after a few emails from you guys and thinking about it (brain taxing) I can see where the second receiver would be useful. When I was working the HK0NA group, I just transmitted where they said they were listening but they had about a 10 kHz spread so it was a guess whether they would hear me or not. It would be nice to know exactly where they are listening. Thanks for the advice. Love the reflector. Shipped my K2 off this morning and sold my IC 7000 last weekend. I am sans rig until this afternoon when UPS comes! I haven't been without a rig in I don't know how long! Its lonely. John KE4D My K3/100 kit arrives tomorrow. I did not order the sub receiver. I have only a vertical here and have some antenna restrictions (height) I use a SteppIR BigIR and it works great for me with my height restriction. So, unless one of you can explain to me why I should have the sub receiver with only one antenna, I'm leaving it the with one! I'm sure I don't understand receiver diversity since I never heard of it until recently. Guide me! John KE4D K3 SN [snip] __ 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] Source for Type 31 Toroids
Hi Ken … Just checked the Fair-rite website, and the type 31 cores are indeed there. But they aren't easy to find. You need to go to Products then Cable components then EMI suppression beads. They have a wide variety of part numbers using type 31 material. I buy mine from Mouser which has no minimum order quantities, good stocking, reasonable prices and wonderful delivery and service. I can't speak to their service to Canada. I've bought many different PNs of type 31 from them. After you find the PNs you are interested in from the Fair-rite site, do a search on those PNs in the Mouser site. Have fun 73 … Craig AC0DS __ 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 numbers
Hello Igor! PSE tell your friend that I am ready to run a JT65A sked with him when he gets an amp and license for 6m! I am eagerly awaiting the chance to run with some UA9 stations on 6m EME during your moonrise! GL and VY 73, Lance On 2/10/2012 3:33 PM, Igor Sokolov-2 [via Elecraft] wrote: My friend RV9CTD got his K3/10 kit on the 7th of February. Two days later he is on the air. His K3 serial number is 6166. Just for your article, Elecraft refuses sending assembled equipment to Russia because such parcels are often stopped and returned to sender by Russian custom. Anything sent in kit form has no problems. Looks like Russian customs want Russian hams to turn into trained kit builders. 73, Igor UA9CDC - Original Message - From: John Lemay [hidden email] /user/SendEmail.jtp?type=nodenode=7273011i=0 To: [hidden email] /user/SendEmail.jtp?type=nodenode=7273011i=1 Sent: Friday, February 10, 2012 3:44 PM Subject: [Elecraft] K3 numbers Hi all I'm writing a short article about the K3 for my club magazine. I'd like to include a couple of statistics:- How many K3's have been produced ? How many were kit form ? Ball park figures only. Thanks John G4ZTR __ Information from ESET NOD32 Antivirus, version of virus signature database 6873 (20120210) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] /user/SendEmail.jtp?type=nodenode=7273011i=2 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:[hidden email] /user/SendEmail.jtp?type=nodenode=7273011i=3 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/K3-numbers-tp7272100p7273011.html To start a new topic under Elecraft, email ml-node+s365791n365791...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=dzdnakBxLmNvbXwzNjU3OTF8OTMyNDMwOQ==. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- Lance Collister, W7GJ (ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ) P.O. Box 73 Frenchtown, MT 59834-0073 USA TEL: (406) 626-5728 QTH: DN27ub URL: http://www.bigskyspaces.com/w7gj Windows Messenger: w...@hotmail.com Skype: lanceW7GJ 2m DXCC #11/6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the Magic Band EME email group, or just fill in the request box at the bottom of my web page (above)! -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-numbers-tp7272100p7273828.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] Source for Type 31 Toroids
On 2/10/2012 10:23 AM, Ken Alexander wrote: However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. They are there -- you have to look under the EMC products, not inductive products. Same thing, but the inductive parts are tested for inductance at low frequencies while the EMC parts are tested for impedance at higher frequencies. See Appendix One of the RFI tutorial for Fair-Rite part numbers and a list of known good sources. Off the top of my head, Allied, Newark, Digikey, Kreiger, Lodestone Pacific come to mind. It pays to shop around, and to buy in quantity, combining quantities with your ham neighbors and clubs. 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] WANTED: 2T Generator
Dick, I have one that I don't need since I got the K3. Works well. Looks good on O'scope. I'll include some minor attachments (remote on/off). Is $40 (your check). It fits in small US Mail box. 73, Fred __ 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] Source for Type 31 Toroids
Kits and Parts stocks some 31 cores. http://www.kitsandparts.com/ Mouser carries the large 2.4 diameter 31 material core, a bit cheaper than Kits and Parts. 623-2631803802 If you search Mouser for part numbers beginning with 2631 and Manufacturer = Fair=Rite you will find several other sizes of 31 material cores available. Jack K8ZOA On 2/10/2012 1:23 PM, Ken Alexander wrote: I have some interference problems with my receivers and have been reading Jim K9YCs excellent article on the subject. It sounds like type 31 ferrite toroids will be the answer to some of my problems and I'm interestedin buying some. I had always considered Fair-Rite to be the main source of just about everything made of ferrite, and Jim mentions them several times in his article. However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. I'm pretty sure Amidon doesn't have them either. Where else can I look? Any thoughts? Thanks in advance 73, Ken Alexander VE3HLS __ 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] How much is enough?
I like building QRP radios. What is the group's opinion on basic test/calibration equipment one should have in the shack? Thanks in advance! Frank KD8FIP 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
[Elecraft] How to turn off the KPA500?
At the risk of embarassing myself I am curious as to how folks are tuning off their KPA500. That is, do you just use the front panal button or both the front panel botton and the rear panel rocker switch, once the fan stops? I understand the need for both, that the fan won't run and deplete the power supply without power from the rear rocker switch. But are people leaving the rear switch on when done for the night? Also, should we run the KPA500 through a surge protector? With the current draw, it would probably be a dedicated surge protector. At the moment I have it plugged directly into the wall. All my other equipment, except an Alpha that uses 230v, is surge protected. i unplug the Alpha when off air for a long time or when an electrical storm is brewing. Not a big issue. Just curious what is the best operating practice here. Fred, K3BHX -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-turn-off-the-KPA500-tp7273885p7273885.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] K3 and K2 simultaneous on serial to USB cables to computer
Yes, and I'm using an appropriately wired serial jumper between the K2 and the USB to serial adapter. I also have not tried any PTT/CW keying with this adapter, so can't comment on that. Chip AE5KA On Fri, Feb 10, 2012 at 11:12 AM, Bob Nielsen n...@clearwire.net wrote: You will need to make a jumper cable between the K2 and your serial-to-USB cable. See Figure 7 on Page 13 of the KIO2 manual for the connections. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX1 has LED switching noise
Paul, There is a very small amount of that noise on any KX1, but it is not enough to raise the noise floor of the receiver. If the noise in your KX1 is large enough to interfere with weak signals, then it is excessive and should be fixed. Your guess about the capacitors is a good starting place - often electrolytics develop a higher ESR as they age. 73, Don W3FPR On 2/10/2012 1:48 PM, Paul Signorelli wrote: My old 2003 KX1 has low level LED/CPU switching noise. The switching noise frequency is lower on L1 and higher (and amplitude higher) on L6 (Brightest Level #6). L4 is about 80 Hz. Maybe the aluminum bypass (C10, C12) capacitors are opening up. i hear it on all bands (I have an 80, 40, 30, 20 meter KX1) and at any battery voltage. Anyone solve this issue? Paul w0rw __ 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] Normal KPA500 behavior?
Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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 SN 6226 KE4D
For the MH2, go to the main menu MIC SEL and select FPL BIAS by rotating the Main VFO and tapping 1 and 2 to toggle things. Keith On 2/10/2012 10:48 AM, k...@att.net wrote: Got it last evening and am on the with cw. I get tx err with my hM2 mike but I'm sure it's something simple. Haven't yet set band power for the KPA500 but that is next. Nice job Elecraft. Nothing missing and other than a cockpit error with the filter set up, no issues. John KE4D K3 SN 6226 KPA500 SN 636 John Veach 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 __ 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] Source for Type 31 Toroids
Nope! I can't find what you're talking about. There's something wrong when someone have to provide a tutorial on how to navigate their website. Somebody should be thinking maybe our website isn't that easy to use. Anyway, never mind. I'll try Digi-Key , Mouser, etc. Thanks Jim. Ken From: Jim Brown j...@audiosystemsgroup.com To: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 2:01:22 PM Subject: Re: [Elecraft] Source for Type 31 Toroids On 2/10/2012 10:23 AM, Ken Alexander wrote: However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. They are there -- you have to look under the EMC products, not inductive products. Same thing, but the inductive parts are tested for inductance at low frequencies while the EMC parts are tested for impedance at higher frequencies. See Appendix One of the RFI tutorial for Fair-Rite part numbers and a list of known good sources. Off the top of my head, Allied, Newark, Digikey, Kreiger, Lodestone Pacific come to mind. It pays to shop around, and to buy in quantity, combining quantities with your ham neighbors and clubs. 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] How much is enough?
On Fri, Feb 10, 2012 at 1:11 PM, Frank MacDonell kd8...@gmail.com wrote: ...basic test/calibration equipment one should have... Frank, you'll get plenty of opinions, but in addition to the obvious stuff I would highly recommend the LC meter kit at: http://www.aade.com/lcmeter.htm Since you like building, you'll like this kit. It gives much more accurate readings of L and C than the LC readings on my fancy digital VOM, and it's a great help when winding and/or debugging toroids and identifying capacitors with tiny cryptic markings or none at all. Of course, you need a VOM, maybe a nice signal generator like the XG-3, and an RF probe for your VOM. I love my scope but it's certainly not a necessity. I also have an audio generator I built from a Sparkfun kit that could sometimes be helpful. Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 __ 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] How much is enough?
Frank, Build your array of test equipment around your needs - and build it up as you have need. If you are building kit radios, then you may only need a DMM and a good dummy load. OTOH, if you are designing and testing your own experimental designs or building from a schematic you discovered, you may need more than that. An oscilloscope is really a handy tool, and a frequency counter is also good to have. A precision dummy load and an oscilloscope with a 10X probe will allow you to measure RF power - of course, the Elecraft DL1 qualifies and has a built-in detector diode. An RF Probe will work in many cases in place of the oscilloscope. Signal generators are also good to have - the Elecraft XG3 is quite a versatile generator You need a PC with a soundcard at the workbench - so you can run Spectrogram or SpectrumLab and have a mini-DB and mini-Ring-Core calculators available - there is a lot that you can do with a PC on the workbench. I would refer you to the Measurements chapter of Experimental Methods in RF Design (ARRL Publication) for a more complete list of test equipment. The degree of precision you need/want to achieve will dictate your selection of equipment. 73, Don W3FPR On 2/10/2012 2:11 PM, Frank MacDonell wrote: I like building QRP radios. What is the group's opinion on basic test/calibration equipment one should have in the shack? Thanks in advance! Frank KD8FIP __ 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 8 pole 700hz filter FYI
FYI about a 700hz CW filter for the K3 I originally posted here looking for a used 700hz filter for my K3. Since then plans have been made to have Inrad do a small run of these filters. If you think you may be interested in getting one of these filters, you can get details at www.unpcbs.com Disclaimer: I do not work for unpcbs! I have no monetary interest in the production of these filters for the K3. I am only trying to get the word out so all my Elecraft friends can have the opportunity to order one of these filters before it's too late. 73 Keith N8CEP __ 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] Normal KPA500 behavior?
1) With CW carrier; Temperature rises as I hold down the straight key. Temerature falls when releasing the key. While sending CW (dits and dahs) Temperature rises. When I release the keyer paddles the temp begins to fall within about 2 seconds. 2) Same as yours. Temerature behavior will be different according to you fan speed settings. I have mine set at the factory settings. The first stage comes on first and then escalates as the temperature rises. I've never heard the fan speed escalate above 3. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member Only the white eyes would believe they could cut the top off a blanket, sew it to the bottom and have a longer blanket. -- American Indian comment about Daylight Saving Time -- On Fri, 10 Feb 2012 11:28:10 -0800 (PST), Mike Walsh ke5...@yahoo.com wrote: Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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] Normal KPA500 behavior?
Hi and thanks for the replies. However, I think people are misunderstanding my question about the TEMP display. When I hit the key to send a 500 watt carrier the display instantly drops 5 degrees C and instantly goes back up to the real temperature when I release the key. It's that instant change in displayed temperature that I'm asking about, not the relatively slow increase or decrease associated with the real heating and cooling of the amp. Do others see that instant decrease on transmit?? 73 and Thanks, Mike - ke5akl From: n...@n5ge.com n...@n5ge.com To: Mike Walsh ke5...@yahoo.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:18 PM Subject: Re: [Elecraft] Normal KPA500 behavior? 1) With CW carrier; Temperature rises as I hold down the straight key. Temerature falls when releasing the key. While sending CW (dits and dahs) Temperature rises. When I release the keyer paddles the temp begins to fall within about 2 seconds. 73, Tom -- American Indian comment about Daylight Saving Time -- On Fri, 10 Feb 2012 11:28:10 -0800 (PST), Mike Walsh ke5...@yahoo.com wrote: Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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] Normal KPA500 behavior?
1. Key down [or RTTY TX], mine rises, fan steps up, temp stabilizes. When I unkey, temp begins to fall. Sending CW, temp may fall a deg or so when I first send, then it rises. It usually rises another deg or so after I stop sending before falling again. I figure it's thermal inertia for the PA heat to propagate to the sensor. 2. The 700 LED flashes once during the fan power-down cycle. 3. Tapping AUX QSY's the K3 to 10m. Don't know why, but I won't tap AUX again and it won't be a problem. 73, Fred K6DGW - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org On Fri, 10 Feb 2012 11:28:10 -0800 (PST), Mike Walshke5...@yahoo.com wrote: Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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 message. Checked by AVG - www.avg.com Version: 2012.0.1913 / Virus Database: 2112/4801 - Release Date: 02/10/12 __ 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] Source for Type 31 Toroids
Son of a gun! I was right there but I was fooled by the illustration of the bead. I left the page when I thought I was looking at beads and never did check the dimensions, but there they are! Thanks Craig! 73 - Ken From: Craig Smith cr...@powersmith.net To: Ken Alexander k.alexan...@rogers.com Cc: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:54:13 PM Subject: Re: [Elecraft] Source for Type 31 Toroids Hi Ken … Just checked the Fair-rite website, and the type 31 cores are indeed there. But they aren't easy to find. You need to go to Products then Cable components then EMI suppression beads. They have a wide variety of part numbers using type 31 material. I buy mine from Mouser which has no minimum order quantities, good stocking, reasonable prices and wonderful delivery and service. I can't speak to their service to Canada. I've bought many different PNs of type 31 from them. After you find the PNs you are interested in from the Fair-rite site, do a search on those PNs in the Mouser site. Have fun 73 … Craig AC0DS __ 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] Normal KPA500 behavior?
On Fri, Feb 10, 2012 at 11:28 AM, Mike Walsh ke5...@yahoo.com wrote: My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. This does NOT sound normal, and is something I think you should worry about right away. If the temp sensor is not functioning correctly, you could cause damage by not having the fans engage at the appropriate speeds, and over-temp protection mechanisms could fail to be invoked. Suggest contacting Elecraft support for guidance on this... ~iain / N6ML __ 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] [OT][MM]: Announcement of Test Bench Mini-Module Enclosures now available
I've been under the weather the last couple of days, so I decided that while I was laying around on the couch, I may as well do something productive like finally update my website ;-) So here is the formal announcement of my Test Bench line of mini-module enclosures. I've been making them for the last couple of years and selling them by word of mouth (keyboard). Here is a link to the Test Bench Enclosure page on my site: http://w8fgu.home.comcast.net/~w8fgu/tbencl.html These enclosures were designed through the suggestions of Don Wilhelm, W3FPR, who wanted the ability to stack the modules, in their enclosures, on top of each other when stowed away to save on bench top footprint and provide better organization for finding them again ;-) I made the dimensions of these enclosures all the same for that purpose. I dimensioned them for the module with the largest width (CP1) and longest length (BL2). The exception was the AT1 enclosure which is the same width, but slightly longer to accommodate PCB length (it serves as a nice base for the others). All connectors (BNC, power, RCA etc.) have been externalized for easy access and a sliding top provided to access any other controls on the PCB for each module. The top slides in a track at the top of the enclosure and is held in place by a magnetic strip. An optional power switch may also be provided for modules that have a power switch. This upgrade provides the switch, installed on the enclosure, with a pair of hookup wires pre-soldered to the switch for later attachment to the PCB power switch. The Test Bench line consists of enclosures for the following Elecraft mini-Modules:* *- 2T-gen 2-Tone Test Oscillator - AT1 41 dB HF/VHF Switched Attenuator - BL2 Wideband 1:1 4:1 (Switchable) 250W Balun - CP1 Directional Coupler - DL1 Wideband 20W Dummy Load - N-gen Wideband Noise Generator - XG2 Three Band Receiver Test Oscillator / S-Meter Calibrator I will continue to provide the initial design of enclosures for the BL2 and DL1 as they are more field use friendly. All of these enclosures are made from polycarbonate sheet which is quite strong and should hold up to the rigors of bouncing around and occasional dropping. Feel free to contact me off list for any other questions, comments or concerns. Thanks for the bandwidth! 73, Dave W8FGU __ 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] Normal KPA500 behavior?
Mike, that sounds like a voltage drop under load, i.e. lower voltage to the temp measurement sensor and thus a lower reading under load. Maybe time to contact Elecraft support? Possibly a fault in one of the low voltage generating components. Does not seem to be normal. 73 gl, Olli - DH8BQA http://www.dh8bqa.de/ - Original Message - From: Mike Walsh ke5...@yahoo.com To: n...@n5ge.com Cc: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 9:30 PM Subject: Re: [Elecraft] Normal KPA500 behavior? Hi and thanks for the replies. However, I think people are misunderstanding my question about the TEMP display. When I hit the key to send a 500 watt carrier the display instantly drops 5 degrees C and instantly goes back up to the real temperature when I release the key. It's that instant change in displayed temperature that I'm asking about, not the relatively slow increase or decrease associated with the real heating and cooling of the amp. Do others see that instant decrease on transmit?? 73 and Thanks, Mike - ke5akl From: n...@n5ge.com n...@n5ge.com To: Mike Walsh ke5...@yahoo.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:18 PM Subject: Re: [Elecraft] Normal KPA500 behavior? 1) With CW carrier; Temperature rises as I hold down the straight key. Temerature falls when releasing the key. While sending CW (dits and dahs) Temperature rises. When I release the keyer paddles the temp begins to fall within about 2 seconds. 73, Tom -- American Indian comment about Daylight Saving Time -- On Fri, 10 Feb 2012 11:28:10 -0800 (PST), Mike Walsh ke5...@yahoo.com wrote: Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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 - eMail ist virenfrei. Von AVG überprüft - www.avg.de Version: 2012.0.1913 / Virendatenbank: 2112/4801 - Ausgabedatum: 10.02.2012 __ 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] Source for Type 31 Toroids
Amidon also carries a wide range of beads made from 31 Material. Specifically, 13 round wire type beads and 12 snap-on beads, with prices ranging from 75 cents each to about $20 each, depending on size. You can order directly from www.amidon.com. Lew K6LMP On Feb 10, 2012, at 12:45 PM, Ken Alexander wrote: Son of a gun! I was right there but I was fooled by the illustration of the bead. I left the page when I thought I was looking at beads and never did check the dimensions, but there they are! Thanks Craig! 73 - Ken From: Craig Smith cr...@powersmith.net To: Ken Alexander k.alexan...@rogers.com Cc: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:54:13 PM Subject: Re: [Elecraft] Source for Type 31 Toroids Hi Ken … Just checked the Fair-rite website, and the type 31 cores are indeed there. But they aren't easy to find. You need to go to Products then Cable components then EMI suppression beads. They have a wide variety of part numbers using type 31 material. I buy mine from Mouser which has no minimum order quantities, good stocking, reasonable prices and wonderful delivery and service. I can't speak to their service to Canada. I've bought many different PNs of type 31 from them. After you find the PNs you are interested in from the Fair-rite site, do a search on those PNs in the Mouser site. Have fun 73 … Craig AC0DS __ 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] Source for Type 31 Toroids
Good Deal Ken. Also they have a selection of type 31 clamp-on cores listed under Snap-Its. 73 Craig AC0DS On 10, Feb2012, at 1:45 PM, Ken Alexander wrote: Son of a gun! I was right there but I was fooled by the illustration of the bead. I left the page when I thought I was looking at beads and never did check the dimensions, but there they are! __ 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] test gear...oscilloscopes
Frank... I grew up in the era of Tektronix 'scopes, etc. but now that I'm fully grown (for the moment) I would like to suggest the following: (a) If you really want an ancient boat anchor/piece of iron and aluminum, then look no further than the myriad ads in eBay's Ham Radio section, but (b) if you want something that is handy, look into the PicoScope family, e.g. the PicoScope 2104 / 2105. These are hand-held digital scopes the size of an old-style Tektronix PROBE, and work with the computer that Don Wilhelm has already suggested as being a necessity. I have one, and am very pleased with it. The cost is ~$150 for the low-end model. John Ragle -- W1ZI -- Sent from my lovely old Dell XPS 420 __ 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] KPA500 PWR ADJ Figures
Lets try this again. Out of the more than 600 + KPA500 owners I would think I could get some information from more than 1 guy in Elecraft land. Here is what I want to know. If you have a factory assembled KPA500, what is the PWR ADJ number per band as shown in the menu under PWR ADJ? Since Elecraft should have calibrated the watt meter at the factory and they don't the kits, this would give me a good reference point to calibrate a kit . If you built a kit and calibrated your watt meter with a known source, then what is the PWR ADJ number per band ? 73 David KC8IV __ 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] Source for Type 31 Toroids
Fair-rite On 10, Feb2012, at 2:10 PM, Dick Stein wrote: Hi Craig: Who is the vendor They when you say they have a selection? Dick, K2ZR/4 __ 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] Source for Type 31 Toroids
I have used Amidon products in the past. Good quality. 73 Gene K1NR On Fri, 10 Feb 2012 13:01:55 -0800 Lew Phelps K6LMP k6...@me.com wrote: Amidon also carries a wide range of beads made from 31 Material. Specifically, 13 round wire type beads and 12 snap-on beads, with prices ranging from 75 cents each to about $20 each, depending on size. You can order directly from www.amidon.com. Lew K6LMP On Feb 10, 2012, at 12:45 PM, Ken Alexander wrote: Son of a gun! I was right there but I was fooled by the illustration of the bead. I left the page when I thought I was looking at beads and never did check the dimensions, but there they are! Thanks Craig! 73 - Ken From: Craig Smith cr...@powersmith.net To: Ken Alexander k.alexan...@rogers.com Cc: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:54:13 PM Subject: Re: [Elecraft] Source for Type 31 Toroids Hi Ken … Just checked the Fair-rite website, and the type 31 cores are indeed there. But they aren't easy to find. You need to go to Products then Cable components then EMI suppression beads. They have a wide variety of part numbers using type 31 material. I buy mine from Mouser which has no minimum order quantities, good stocking, reasonable prices and wonderful delivery and service. I can't speak to their service to Canada. I've bought many different PNs of type 31 from them. After you find the PNs you are interested in from the Fair-rite site, do a search on those PNs in the Mouser site. Have fun 73 … Craig AC0DS __ 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 - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.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] Source for Type 31 Toroids
On 2/10/2012 1:01 PM, Lew Phelps K6LMP wrote: Amidon also carries a wide range of beads made from 31 Material. Specifically, 13 round wire type beads and 12 snap-on beads, with prices ranging from 75 cents each to about $20 each, depending on size. Amidon is probably the most expensive place to buy this stuff. All of those sources I mentioned, as well as Mouser, are MUCH cheaper. 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] Source for Type 31 Toroids
I have purchased boxes of type 31 from Kreiger. They are fast, and their web site was recently re-done to be much easier to navigate. 73, Byron N6NUL On Fri, Feb 10, 2012 at 11:01 AM, Jim Brown j...@audiosystemsgroup.com wrote: On 2/10/2012 10:23 AM, Ken Alexander wrote: However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. They are there -- you have to look under the EMC products, not inductive products. Same thing, but the inductive parts are tested for inductance at low frequencies while the EMC parts are tested for impedance at higher frequencies. See Appendix One of the RFI tutorial for Fair-Rite part numbers and a list of known good sources. Off the top of my head, Allied, Newark, Digikey, Kreiger, Lodestone Pacific come to mind. It pays to shop around, and to buy in quantity, combining quantities with your ham neighbors and clubs. 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 -- - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ 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] Source for Type 31 Toroids
I have always bought from Amidon before. It sounds like they're a major distributor though, and not the manufacturer, which is Fair-Rite, correct? 73 - Ken From: Eugene Balinski euge...@nni.com To: Lew Phelps K6LMP k6...@me.com; Elecraft@mailman.qth.net List elecraft@mailman.qth.net Sent: Friday, February 10, 2012 4:24:53 PM Subject: Re: [Elecraft] Source for Type 31 Toroids I have used Amidon products in the past. Good quality. 73 Gene K1NR On Fri, 10 Feb 2012 13:01:55 -0800 Lew Phelps K6LMP k6...@me.com wrote: Amidon also carries a wide range of beads made from 31 Material. Specifically, 13 round wire type beads and 12 snap-on beads, with prices ranging from 75 cents each to about $20 each, depending on size. You can order directly from www.amidon.com. Lew K6LMP On Feb 10, 2012, at 12:45 PM, Ken Alexander wrote: Son of a gun! I was right there but I was fooled by the illustration of the bead. I left the page when I thought I was looking at beads and never did check the dimensions, but there they are! Thanks Craig! 73 - Ken From: Craig Smith cr...@powersmith.net To: Ken Alexander k.alexan...@rogers.com Cc: elecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:54:13 PM Subject: Re: [Elecraft] Source for Type 31 Toroids Hi Ken … Just checked the Fair-rite website, and the type 31 cores are indeed there. But they aren't easy to find. You need to go to Products then Cable components then EMI suppression beads. They have a wide variety of part numbers using type 31 material. I buy mine from Mouser which has no minimum order quantities, good stocking, reasonable prices and wonderful delivery and service. I can't speak to their service to Canada. I've bought many different PNs of type 31 from them. After you find the PNs you are interested in from the Fair-rite site, do a search on those PNs in the Mouser site. Have fun 73 … Craig AC0DS __ 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 - Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.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] Source for Type 31 Toroids
On 2/10/2012 11:35 AM, Ken Alexander wrote: Somebody should be thinking maybe our website isn't that easy to use. It's designed for engineers who are looking for a wide variety of ferrite parts for a wide variety of uses. From where I sit, Fair-Rite has by far the best technical website I've ever seen, and nothing else I've seen in the last 30 years is close. Their published data is 100 times more detailed and informative than any of their competitors. A lot of what I know about ferrite materials I've learned by studying their published data. To get as much and as good data as theirs you've got to go back at least three decades to publications like the huge data books published by companies like National, Motorola, GE, Fairchild, and RCA for their semiconductors and tubes, and Electro-Voice for their microphones and loudspeakers. Historically, Fair-Rite has also very good about supplying engineering samples for those doing real design work. When I first began the studies that led to all of the work I've published, Fair-Rite provided me with hundreds of samples of several dozen parts I requested, never asking anything beyond the normal questions a regional rep would ask. It's paid off for them -- the #31 toroids EXIST because I asked for them, and thanks at least in part to the work I've published on using multi-turn chokes, the #31 material has replaced older materials for suppression at MF and HF. 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] Source for Type 31 Toroids
What is the URL for Kreiger? 73, Dick WO1I At 10:34 PM 2/10/2012, Byron Servies wrote: I have purchased boxes of type 31 from Kreiger. They are fast, and their web site was recently re-done to be much easier to navigate. 73, Byron N6NUL On Fri, Feb 10, 2012 at 11:01 AM, Jim Brown j...@audiosystemsgroup.com wrote: On 2/10/2012 10:23 AM, Ken Alexander wrote: However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. They are there -- you have to look under the EMC products, not inductive products. Same thing, but the inductive parts are tested for inductance at low frequencies while the EMC parts are tested for impedance at higher frequencies. See Appendix One of the RFI tutorial for Fair-Rite part numbers and a list of known good sources. Off the top of my head, Allied, Newark, Digikey, Kreiger, Lodestone Pacific come to mind. It pays to shop around, and to buy in quantity, combining quantities with your ham neighbors and clubs. 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 -- - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ 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] Source for Type 31 Toroids
I have used W8DIZ for my torroids. Check out his website and slide down to torroids, he carries a good inventory. I think his prices are pretty good too. http://www.partsandkits.com/ 73, Bob K6UJ On Feb 10, 2012, at 1:34 PM, Byron Servies wrote: I have purchased boxes of type 31 from Kreiger. They are fast, and their web site was recently re-done to be much easier to navigate. 73, Byron N6NUL On Fri, Feb 10, 2012 at 11:01 AM, Jim Brown j...@audiosystemsgroup.com wrote: On 2/10/2012 10:23 AM, Ken Alexander wrote: However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. They are there -- you have to look under the EMC products, not inductive products. Same thing, but the inductive parts are tested for inductance at low frequencies while the EMC parts are tested for impedance at higher frequencies. See Appendix One of the RFI tutorial for Fair-Rite part numbers and a list of known good sources. Off the top of my head, Allied, Newark, Digikey, Kreiger, Lodestone Pacific come to mind. It pays to shop around, and to buy in quantity, combining quantities with your ham neighbors and clubs. 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 -- - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ 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] Source for Type 31 Toroids
Sorry, I spelled their name wrong: http://www.kregercomponents.com/ are the folks I have used. Their site will now tell you how many are in a factory box, too, which as Jim K9YC recommends is a good way to limit breakage. They do a very good job packing smaller orders, too, though. 73, Byron N6NUL On Fri, Feb 10, 2012 at 1:42 PM, Dick Lindzen rlind...@mit.edu wrote: What is the URL for Kreiger? 73, Dick WO1I At 10:34 PM 2/10/2012, Byron Servies wrote: I have purchased boxes of type 31 from Kreiger. They are fast, and their web site was recently re-done to be much easier to navigate. 73, Byron N6NUL On Fri, Feb 10, 2012 at 11:01 AM, Jim Brown j...@audiosystemsgroup.com wrote: On 2/10/2012 10:23 AM, Ken Alexander wrote: However, Fair-Rite's online catalog does not list them in their toroid section, nor are they shown in their downloadable PDF catalog. They are there -- you have to look under the EMC products, not inductive products. Same thing, but the inductive parts are tested for inductance at low frequencies while the EMC parts are tested for impedance at higher frequencies. See Appendix One of the RFI tutorial for Fair-Rite part numbers and a list of known good sources. Off the top of my head, Allied, Newark, Digikey, Kreiger, Lodestone Pacific come to mind. It pays to shop around, and to buy in quantity, combining quantities with your ham neighbors and clubs. 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 -- - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ 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 -- - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ 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] Normal KPA500 behavior?
Sounds like RF is getting into the temperature meter circuit. Probably not a big deal, as 5C is only one fan speed step, but might as well clean it up. 73 de Bob, K6XX On 2/10/2012 12:30 PM, Mike Walsh wrote: Hi and thanks for the replies. However, I think people are misunderstanding my question about the TEMP display. When I hit the key to send a 500 watt carrier the display instantly drops 5 degrees C and instantly goes back up to the real temperature when I release the key. It's that instant change in displayed temperature that I'm asking about, not the relatively slow increase or decrease associated with the real heating and cooling of the amp. Do others see that instant decrease on transmit?? 73 and Thanks, Mike - ke5akl From: n...@n5ge.comn...@n5ge.com To: Mike Walshke5...@yahoo.com Cc: elecraft@mailman.qth.netelecraft@mailman.qth.net Sent: Friday, February 10, 2012 1:18 PM Subject: Re: [Elecraft] Normal KPA500 behavior? 1) With CW carrier; Temperature rises as I hold down the straight key. Temerature falls when releasing the key. While sending CW (dits and dahs) Temperature rises. When I release the keyer paddles the temp begins to fall within about 2 seconds. 73, Tom -- American Indian comment about Daylight Saving Time -- On Fri, 10 Feb 2012 11:28:10 -0800 (PST), Mike Walshke5...@yahoo.com wrote: Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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] Source for Type 31 Toroids
On 2/10/2012 1:39 PM, Ken Alexander wrote: I have always bought from Amidon before. It sounds like they're a major distributor though, and not the manufacturer, which is Fair-Rite, correct? Amidon does not make this stuff. They are a distributor of Fair-Rite and some other manufacturers, and NOT a good one. I'd bet there's no one there who has a clue about anything technical. There USED to be a ham there whose name was Amidon, but he's LONG LONG gone, and any technical data there is a leftover from his days. They are selling now whatever they sold then, for WILDLY high mark-ups as compared to most others. I recently bought some transistors and a few small kits from W8DIZ (preamps for use with Beverages and small voltage regulators). Fair prices for what I bought, good service, and the kits were nicely done. For toroids though I would go to the big guys -- it would be tough for him to buy in enough quantity to offer good prices except for the few coils used in his kits. 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] KPA500 PWR ADJ Figures
Start at 100 for every band. If you were to reset the memory, it will default to 100 on each band. That is where we start at the factory. Keith On 2/10/2012 1:20 PM, dpop...@comcast.net wrote: Lets try this again. Out of the more than 600 + KPA500 owners I would think I could get some information from more than 1 guy in Elecraft land. Here is what I want to know. If you have a factory assembled KPA500, what is the PWR ADJ number per band as shown in the menu under PWR ADJ? Since Elecraft should have calibrated the watt meter at the factory and they don't the kits, this would give me a good reference point to calibrate a kit . If you built a kit and calibrated your watt meter with a known source, then what is the PWR ADJ number per band ? 73 David KC8IV __ 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] Source for Type 31 Toroids
On 2/10/2012 2:05 PM, Jim Brown wrote: On 2/10/2012 1:39 PM, Ken Alexander wrote: Amidon does not make this stuff. They are a distributor of Fair-Rite and some other manufacturers, and NOT a good one. I'd bet there's no one there who has a clue about anything technical. There USED to be a ham there whose name was Amidon, but he's LONG LONG gone, and any technical data there is a leftover from his days. Many years ago [as in maybe 54], I needed a ferrite core for a 4:1 balun. DX Engineering hadn't been invented then. I drove over to Amidon [N. Hollywood/Burbank-ish] which turned out to be a suburban house. A fellow, who's name was Amidon opened the door, installed me in a living room filled to the brim with all sorts of boxes and stuff, rummaged around in a bedroom and finally came up with the toroid core. He wanted a lot for the core, in fact more than the 16 year old had. He finally asked me where I had come from, and when I told him S. Central LA, he gave me the core. The balun didn't work, probably because I wound it wrong. I'm really surprised they are still in business. 73, Fred K6DGW - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ 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] AT1 Step Attenuator Case?
Ha! I already bought one of your enclosures for the DL1 dummy load. Great to know there's one for the AT1, NGEN, XG2 in addition to what's listed on your site. I'll email you about price. -- View this message in context: http://elecraft.365791.n2.nabble.com/AT1-Step-Attenuator-Case-tp7268493p7274551.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] Source for Type 31 Toroids
Fred Jensen wrote: On 2/10/2012 2:05 PM, Jim Brown wrote: On 2/10/2012 1:39 PM, Ken Alexander wrote: Amidon does not make this stuff. They are a distributor of Fair-Rite and some other manufacturers, and NOT a good one. I'd bet there's no one there who has a clue about anything technical. There USED to be a ham there whose name was Amidon, but he's LONG LONG gone, and any technical data there is a leftover from his days. Many years ago [as in maybe 54], I needed a ferrite core for a 4:1 balun. DX Engineering hadn't been invented then. I drove over to Amidon [N. Hollywood/Burbank-ish] which turned out to be a suburban house. A fellow, who's name was Amidon opened the door, installed me in a living room filled to the brim with all sorts of boxes and stuff, rummaged around in a bedroom and finally came up with the toroid core. He wanted a lot for the core, in fact more than the 16 year old had. He finally asked me where I had come from, and when I told him S. Central LA, he gave me the core. The balun didn't work, probably because I wound it wrong. I'm really surprised they are still in business. Any company handling anonymous grey toroids needs to have perfect stock control... and Amidon still don't. I was sold a large number of #31 toroids which turned out to be #43 material. So if you do buy from Amidon, check the weight! 2631803802 = FT240-31: 112-114g [1] 2643803802 = FT240-43: 120-122g [1] 5961003801 = FT240-61: 104-106g Original data from G3TXQ, since verified from dependable suppliers. [1] The Fair-Rite data sheet says 118.000g for both of these cores, but in fact the weights of #31 and #43 are distinctly different. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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] How to turn off the KPA500?
That's a very legitimate question Fred. With modern gear containing processors (like the KPA500, K3, etc.), it's always a good idea to shut it down using the front-panel power switch. This ensures that the processor gets to do an orderly shut down, just as it's always good to shut down a pc using the keyboard instead of just pulling the plug. There is a very small current drain after it is shut down. That's the current required to keep the logic alive so it can detect when you press the POWER button to turn it on again. That's the same sort of drain your TV, cable box, etc., all have when supposedly off. Switching off the power on the back panel will stop that drain if it's of concern to you. 73, Ron AC7AC -Original Message- At the risk of embarassing myself I am curious as to how folks are tuning off their KPA500. That is, do you just use the front panal button or both the front panel botton and the rear panel rocker switch, once the fan stops? I understand the need for both, that the fan won't run and deplete the power supply without power from the rear rocker switch. But are people leaving the rear switch on when done for the night? Also, should we run the KPA500 through a surge protector? With the current draw, it would probably be a dedicated surge protector. At the moment I have it plugged directly into the wall. All my other equipment, except an Alpha that uses 230v, is surge protected. i unplug the Alpha when off air for a long time or when an electrical storm is brewing. Not a big issue. Just curious what is the best operating practice here. Fred, K3BHX __ 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] Normal KPA500 behavior?
Hi Mike: I'm sure that LED flash is quite normal. Mine has done that since day one. I do not experience the jumping temp readings though. A couple of speculations: 1 - Does it do that when the amp is connected to a dummy load? (Thinking maybe an RF feedback issue.) 2 - What's your line voltage and how much does it sag under full load? (Thinking that possibly a low line voltage is causing a voltage regulator in the sensor circuit to drop out and lose regulation.) Ron AC7AC -Original Message- Hi, My KPA500 does a couple of things that seem a bit odd. Other KPA owners - do your KPAs also do the following? 1) When I transmit a 500 watt carrier while displaying TEMP the displayed temperature drops 5 degrees C. When I release the key the temperature goes immediately back to the real value. Lower transmit power levels cause a correspondingly lower drop in displayed temp. This behavior causes the temp display to bounce around while transmitting CW. 2) When I power down my KPA the fan turns on (as it should) and then the right most POWER LED flashes on an off quickly. Is that LED flash normal? Thanks and 73, Mike - ke5akl __ 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] Monitor (OT)
I have received enough replies to report the trend. With one exception no problems were reported. The list of brands was most of the mid to major names such as Dell, LG, HP, Acer, ViewSonic, Planar, ASUS. The exceptions were Samsung. Not all Samsung monitors were reported as problematic. Many were OK. An older one had display problems when the user was on 80. This may or may not have been the result of RF in the shack. No way to tell. It seems the one to avoid is Samsung models with soft of virtual buttons. These could be activated during transmission. Units with real buttons seemed to be OK. There are some mystery brands out there that were not mentioned so no conclusion for them can be drawn. Bottom line: It appears that if you stick with recognized brands and avoid trick things like soft buttons you should be OK. However there are no guarantees. Thanks to all, David K0LUM __ 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] How much is enough?
A nice scope is sure fun to have around the old test bench. Perfectly good analogue scopes that cost many thousands 20 to 40 years ago are available for less than a penny on the dollar these days, and are more than enough for work on HF gear. Chip AE5KA __ 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] How much is enough?
I have an HP1740A analog scope (from the 1970's) that is my workhorse. After 40 years in service it still takes a lick'n' and keeps on tick'n'. Equally importantly, we 'understand' each other. If one doesn't learn to use a tool, understanding its idiosyncrasies and limitations, it's not worth buying it. That includes any piece of test equipment. Without that knowledge, the best gear will lead the user astray more often that help inform. So, being a touch lazy, I put making the jump to the latest and greatest until I see a specific need. 73, Ron AC7AC -Original Message- A nice scope is sure fun to have around the old test bench. Perfectly good analogue scopes that cost many thousands 20 to 40 years ago are available for less than a penny on the dollar these days, and are more than enough for work on HF gear. Chip AE5KA __ 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] How much is enough?
All, For those with sincere interest in obtaining a 'scope (Tektronics), I would suggest you contact Mr. Scope - Bob Garcia (esaro...@bellsouth.net) to see what he has available. Bob is a former Tek technician and offers Tek 'scopes at very reasonable prices. He is also quite the gentleman - one of the 'scopes I ordered from him, he sent and did not expect any payment until I was satisfied with the product. You just cannot get any better service than that. 73,, Don W3FPR On 2/10/2012 7:41 PM, Ron D'Eau Claire wrote: I have an HP1740A analog scope (from the 1970's) that is my workhorse. After 40 years in service it still takes a lick'n' and keeps on tick'n'. Equally importantly, we 'understand' each other. If one doesn't learn to use a tool, understanding its idiosyncrasies and limitations, it's not worth buying it. That includes any piece of test equipment. Without that knowledge, the best gear will lead the user astray more often that help inform. So, being a touch lazy, I put making the jump to the latest and greatest until I see a specific need. 73, Ron AC7AC -Original Message- A nice scope is sure fun to have around the old test bench. Perfectly good analogue scopes that cost many thousands 20 to 40 years ago are available for less than a penny on the dollar these days, and are more than enough for work on HF gear. Chip AE5KA __ 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] K3/0 and Remoterig
Wait for the posting and addition to the web page. I am here in Orlando for the Orlando Hamcatin ARRL hamfest. I ran out of time this week to get it on the web site as I had to prep for the show and catch an early Flight on Thursday. Next week, I hope! I apologize for the delay. 73, Eric 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
[Elecraft] Signalink USB Elecraft K3 cable
I am in need of a Tigertronics Signalink USB cable for the Elecraft K3. I can buy it or trade the Icom cable that I currently have for it. Please contact me offline. Thanks Bryon W7RIV __ 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] KPA500 Z Bracket Top Cover
Just finished a KPA500 build and all went smoothly. The only issue I see is that the Z-Bracket appears to be about 1mm taller at the front than at the rear. The result is that the top cover protrudes above the front panel in the center by a small amount, perhaps 1mm. At the rear the top cover is flush with the rear panel in the center...no protrusion at all. This is a cosmetic issue but does detract a bit for the fit and finish of the rest of the KPA500 and the K3. Has anyone else seen this issue? Thought I would ask before calling home. --- Chuck, AE4CW -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA500-Z-Bracket-Top-Cover-tp7275169p7275169.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] KPA500 Z Bracket Top Cover
It should be flat. Is anything caught between the Z-bracket and the bottom cover? Ron AC7AC -Original Message- Just finished a KPA500 build and all went smoothly. The only issue I see is that the Z-Bracket appears to be about 1mm taller at the front than at the rear. The result is that the top cover protrudes above the front panel in the center by a small amount, perhaps 1mm. At the rear the top cover is flush with the rear panel in the center...no protrusion at all. This is a cosmetic issue but does detract a bit for the fit and finish of the rest of the KPA500 and the K3. Has anyone else seen this issue? Thought I would ask before calling home. --- Chuck, AE4CW __ 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] KPA500 Z Bracket Top Cover
On Fri, Feb 10, 2012 at 6:54 PM, Chuck - AE4CW ae...@att.net wrote: Just finished a KPA500 build and all went smoothly. The only issue I see is that the Z-Bracket appears to be about 1mm taller at the front than at the rear. The result is that the top cover protrudes above the front panel in the center by a small amount, perhaps 1mm. At the rear the top cover is flush with the rear panel in the center...no protrusion at all. This is a cosmetic issue but does detract a bit for the fit and finish of the rest of the KPA500 and the K3. Has anyone else seen this issue? Thought I would ask before calling home. Yes, I have exactly the same issue, but I don't have a solution. It hasn't bothered me enough to pursue it with support, but I couldn't see any way that it could have been caused by incorrect assembly, so it must be a malformed Z-bracket. Let me know if you find a solution! ~iain / N6ML __ 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] New 472kHz LF band
This has been asked before and Wayne has indicated that K3 cannot be extended below 490-KHz. I am using my K3 on the 495-510 KHz experimental band as a driver for a 100w transmitter (4.15w ERP). You need the KXV3 transverter I/F and the KBPF3 general coverage filter for the K3 to operate on 500-KHz. Then you operate at 0 dBm output by entering the TEST mode. You need some linear amplification for useful transmit power. For the new band ERP=1w implies an amp with 25w output. To extend use of the K3 lower in frequency a transverter can be made. Look at: http://www.kl7uw.com/600m_XVTR.jpg But there is another solution: The KX3 will tune to 310-KHz if you have the internal ATU. Wayne wrote me that they have not determined if an external LP filters will be needed, so look at: http://w1vd.com/LPF.pdf Also they are not sure what the KX3 output power level will be (my guess 20mw -1w). For more info about the ARRL 500-KHz Experimental Group: http://www.500kc.com/ http://www.kl7uw.com/600m.htm 73, Ed - KL7UW Message: 29 Date: Fri, 10 Feb 2012 11:00:55 + From: David Pratt da...@g4dmp.fsnet.co.uk Subject: [Elecraft] [K3] New 472kHz LF band To: elecraft@mailman.qth.net Message-ID: jnqieqanjpnpf...@g4dmp.fsnet.co.uk Content-Type: text/plain;charset=us-ascii I see from the report of WRC-12 that a new band 472-479kHz is to be allocated on a world-wide basis with an eirp of 5W (1W in some countries). The K3 receiver currently goes down to 490kHz. Is there any likelihood that this could be extended down to cover the new band? 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep dubus...@gmail.com Kits made by KL7UW http://www.kl7uw.com/kits.htm == __ 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
