Re: [Elecraft] OT Hearing HRD Communicate w/K3
In the past (in other situation and not k3 vs HRD) using shielded cable for serial connection and connecting its shield to signal ground ONLY at one edge (leaving shield disconnected at the other edge) helped me to fix noise capture. Maybe this may help also in this case. 73 to everybody -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Hearing-HRD-Communicate-w-K3-tp6186303p6187080.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] Test message
KX1 Hawaii to Aruba with 20 foot high dipole. __ 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] K3/10 wanted UK
Hi all, I am looking to buy a K3/10 (or poss. K3/100) in the UK...please let me know if you have one for sale. 73 Paul G0WAT E-mail is brice-stevens=AT=virginmedia.com...substitute the =AT= with the appropiate __ 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] DVK + beeps
Those with DVK's should make sure the key beep option is turned off while recording. The key beeps can get into the recording. Not nice. 73 de Brian/K3KO - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1204 / Virus Database: 1498/3516 - Release Date: 03/19/11 __ 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] wanted k2/100
wanted k2/100 all hf bands noise blanker dsp ssb only from uk seller must be in good wrking order very good condition and set up correctly Steve Hathaway GW7FBV hstev...@aol.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 Lockup problem
Had a little scare this morning. Got up early and turned the K3 on (it was on 17 meters where I left it last night at shutdown). Rather than use the bandswitch, I just did a direct frequency entry for 1.808 MHz planning to call CQ on RTTY. The K3 did the QSY but was locked up at that point with 1.808.00 showing on the display and none of the buttons would work and neither the Main or Sub VFO's would tune. Tried to shut it off, but the power button was also locked - the Lock symbol wasn't showing. Had to cycle power by turning the power supply off. On re-powering the K3, everything worked normally. Anyone run into this before? I AM using the test version of firmware, (MCU 4.30, FPL 1.14 and 2.7 in DSP 1 and 2) that turns QRQ off when you enter Split mode and wondering if a minor bug may have crept in during the coding of this version or possibly have been there and not discovered before? I tried to duplicate it but was unable to do so. It may have just been a random glitch. Jim - W0EB __ 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] LED vs LCD PC Monitor: RFI?
I am using two HP 2311x monitors above both of my K3s nd they make no interference. Tom N5GE On Fri, 18 Mar 2011 08:22:25 -0700 (PDT), you wrote: I'm replacing the PC monitor in my shack and it appears today's current selection of reasonably-priced monitors are either LCD or LED flat screens in the 20 - 23 range. Since the monitor will share the same desk as my K2, I wanted to get one with the least amount of RFI. Is LCD vs LED significantly quieter than the other? Does anyone have specific recommendations (brand/model) for a RFI quiet monitor? Thanks!! 73 N5BCN - Brian - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT Hearing HRD Communicate w/K3
I use one of these, works great; http://www.coilcraft.com/rs232.cfm#table Adrian ... vk4tux __ 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] Don w3fpr
I want everybody to know how happy I am with the service and super fast turn around that Don did with my K2. Not only he did a very professional job, but he took the time to answer my very dumb questions. Thank You Don! 73 Ozzie, w6icm __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 Almost Finished - Then Disaster
I almost had my K2 finished having send and receive on all but 12,15 and 17 meters. Decided to redo the 15 and 17 meter low pass torroidal inductors and after I finished had no receive at all and no transmit. Started troubleshooting and the transceiver, which has randomly come up with 080 info warnings began to come up with them more frequently. Additionally, if you tried to change bands, it would display my power out information even though I am not transmitting. I attacked the 080 problem using one of the articles on the website and everything checked out ok. So I decided to reset the radio with the 456 method. After that, nothing made any sense on the displays. I started checking all the pinouts on the control board to the rf board and my hand slipped, killing the radio - no displays, no relays, etc. I tracked down the problem to a bad 5 volt regulator on the control board and replaced that. Got five volts back but the regulator (7805) heated up quickly and the voltage went down to 2 volts. The MCU also got red hot in a few seconds. I ordered the firmware kit from Elecraft which would give me a new MCU and IOC. With the MCU removed, the 5 volt regulator is fine - doesn't overheat and stays at 4.99 volts. I hace checked all resistors on the control board and front panel and everything else seems fine. I think the MCU and IOC replacements should solve my problem. Any suggestions?? Allan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft SSB Net Announcement
The weekly SSB net will be tomorrow (3/20/11) at 1800z on 14.314 MHz. I will be the net control station from western Oregon. If we have intentional QRM, can those of you with steerable antennas please try to get a bearing on the offending signal. Let's hope the problem doesn't continue. See you there. 73, Phil, NS7P __ 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] Connecting to Sub-Rx IF
I brought out a connection from the sub-Rx IF of my K3, today. Not too hard once I figured out a couple things. I am tapped into the IF at P86A (or W3). This is the input to the Noise Blanker on the KRX3. One caution is that +9vdc is present at this point so one must provide a .001 uF coupling capacitor to block the DC as this is subject to loading or shorting when you connect to the IF. I used a small disc ceramic cap. The cap feeds a run of RG-174 (100% shield Belden 7805) coaxial cable which I have placed two ferrite beads over the coax shield at the connection to the cap. I bring the coax out a large hole in the KRX-3 shield where I added two windings thru a .37 inch toroid core for more decoupling. The coax then runs to a panel-mount (UG-1094) BNC connector in the hole provided for the XV144 internal transverter (which I do not have). This provides equal signal level as the the main-Rx IF to my LP-Pan's. I will write up the installation with plenty of photos on my webpage for the Linrad Project: http://www.kl7uw.com/LINRAD.htm A big CAVEAT to anyone considering doing this: Use anti-static mat, wrist-strap, and ground your tools and solder iron to the radio case before touching any circuitry. This is best left to the experienced builder. 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.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] Installed K3EXREF
It took me about 1-1/2 hours to install the new EXREF for referencing the TCXO to external 10-MHz. I have not installed the new firmware or tested it yet...more news, later. 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.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] elecraf/K4TMC??
I'm sure by now everyone has seen the elecraf spam that got posted to the reflector. I've got a filter set up in my e-mail client to filter out k4...@aol.com Even after all of this, every time I connect to my server to retrieve mail another copy shows up in my spam filter. I'm up to 50+ today alone. Is anyone else seeing this? Do I need to do anything else to get rid of this or do I possibly have some malware lurking on my computer? And no, I didn't click on the link in the spam e-mail. Spammers should be hung by their genitals and slowly skinned with a rusty pocket knife. -- 73, Gary K9GS Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.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] elecraf/K4TMC??
Gary and all Elecraft users, I apologize for any spam that has been generated from my email account. I have taken measures to hopefully preclude this from happening again. Somehow, after over 10 years with the current account, my email account was compromised. Not sure how it happened, but I started getting hundreds of failed email notes in my spam filter. Since no one notified me of the issue, I was not aware of it until yesterday afternoon. 73, Henry Pollock - K4TMC -Original Message- From: Gary K9GS garyk...@wi.rr.com To: 'Elecraft' elecraft@mailman.qth.net Sent: Sat, Mar 19, 2011 5:28 pm Subject: [Elecraft] elecraf/K4TMC?? I'm sure by now everyone has seen the elecraf spam that got posted to the reflector. I've got a filter set up in my e-mail client to filter out k4...@aol.com Even after all of this, every time I connect to my server to retrieve mail another copy shows up in my spam filter. I'm up to 50+ today alone. Is anyone else seeing this? Do I need to do anything else to get rid of this or do I possibly have some malware lurking on my computer? And no, I didn't click on the link in the spam e-mail. Spammers should be hung by their genitals and slowly skinned with a rusty pocket knife. -- 73, Gary K9GS Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.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] K2 Almost Finished - Then Disaster
Allan, Sorry to hear about your misfortunes. It sounds like you had the MCU chip plugged in backwards! The info 080 message says that the MCU cannot communicate with one or more of the firmware chips on the options (and includes the KIOC chip on the RF Board). The no receive is a different problem - it is not related to the failure of the MCU nor the Info 080 messages. 73, Don W3FPR On 3/19/2011 4:50 PM, Al Gold wrote: I almost had my K2 finished having send and receive on all but 12,15 and 17 meters. Decided to redo the 15 and 17 meter low pass torroidal inductors and after I finished had no receive at all and no transmit. Started troubleshooting and the transceiver, which has randomly come up with 080 info warnings began to come up with them more frequently. Additionally, if you tried to change bands, it would display my power out information even though I am not transmitting. I attacked the 080 problem using one of the articles on the website and everything checked out ok. So I decided to reset the radio with the 456 method. After that, nothing made any sense on the displays. I started checking all the pinouts on the control board to the rf board and my hand slipped, killing the radio - no displays, no relays, etc. I tracked down the problem to a bad 5 volt regulator on the control board and replaced that. Got five volts back but the regulator (7805) heated up quickly and the voltage went down to 2 volts. The MCU also got red hot in a few seconds. I ordered the firmware kit from Elecraft which would give me a new MCU and IOC. With the MCU removed, the 5 volt regulator is fine - doesn't overheat and stays at 4.99 volts. I hace checked all resistors on the control board and front panel and everything else seems fine. I think the MCU and IOC replacements should solve my problem. Any suggestions?? Allan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT Hearing HRD Communicate w/K3
On 3/19/2011 1:42 AM, ik1bxn wrote: In the past (in other situation and not k3 vs HRD) using shielded cable for serial connection and connecting its shield to signal ground ONLY at one edge (leaving shield disconnected at the other edge) helped me to fix noise capture. Maybe this may help also in this case. 73 to everybody NEVER connect a cable shield to signal ground -- this MAKES a Pin One Problem. The only proper connection of a cable shield is the SHIELDING ENCLOSURE (like the chasssis). When you disconnect the shield at one end, you stop shield current. That CAN be an acceptable fix, but it can also CAUSE noise and RF problems because it shields noise from only one end of the 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
Re: [Elecraft] elecraf/K4TMC??
If you analyze the header from one of the e-mails, you may discover that it didn't really come from your e-mail account or your machine. It's common for malware to infect a computer and read the 'address book' in that machine. If the user of that machine had ever received or downloaded an e-mail from you, your address is in the list. The malware grabs an address at random as the sender. In this case it was your e-mail address. It's happened to me once in the past 15 years, but once was enough. Still, there's no sure solution. Ron AC7AC -Original Message- Gary and all Elecraft users, I apologize for any spam that has been generated from my email account. I have taken measures to hopefully preclude this from happening again. Somehow, after over 10 years with the current account, my email account was compromised. Not sure how it happened, but I started getting hundreds of failed email notes in my spam filter. Since no one notified me of the issue, I was not aware of it until yesterday afternoon. 73, Henry Pollock - K4TMC -Original Message- From: Gary K9GS garyk...@wi.rr.com To: 'Elecraft' elecraft@mailman.qth.net Sent: Sat, Mar 19, 2011 5:28 pm Subject: [Elecraft] elecraf/K4TMC?? I'm sure by now everyone has seen the elecraf spam that got posted to the reflector. I've got a filter set up in my e-mail client to filter out k4...@aol.com Even after all of this, every time I connect to my server to retrieve mail another copy shows up in my spam filter. I'm up to 50+ today alone. Is anyone else seeing this? Do I need to do anything else to get rid of this or do I possibly have some malware lurking on my computer? And no, I didn't click on the link in the spam e-mail. Spammers should be hung by their genitals and slowly skinned with a rusty pocket knife. -- 73, Gary K9GS Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.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
Re: [Elecraft] OT Hearing HRD Communicate w/K3
ooops please apologize me ! I did mistake during translation in my mind , I ment chassis ! sorry for the confusion I may have created. Thanks Jim for correction ! 73 to everybody e grazie -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Hearing-HRD-Communicate-w-K3-tp6186303p6188429.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] Installed K3EXREF
That seems quite a long time to install it, Ted. What's involved? I have looked for the manual on-line but it does seem to up there yet. Any more details would be appreciated; I'd like to order one. 73 de David G4DMP In a recent message, Edward R. Cole kl...@acsalaska.net writes It took me about 1-1/2 hours to install the new EXREF for referencing the TCXO to external 10-MHz. I have not installed the new firmware or tested it yet...more news, later. -- + - - - - - - - - - - - - - - - - + | 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] Installed K3EXREF
Installing the K3EXREF involves installing a connector/cable assembly in the REF. hole in the K3's rear panel and running the cable under the RF board to the front panel shield, then up behind the front panel shield. The other end plugs into the TMP connector on the KREF3 reference oscillator board that sticks through the hole in the shield. A small pony board plugs into the connector on the component side of the KREF3 board, held in place by a screw that passes through it and the KREF3 board and into the PEM nut in the shield. The biggest part of the project is taking the left side off of the K3 to install the cable. If you have the K144XV installed, it needs to be removed. If you have the KRX3 subreceiver, it can be left in place. You do *NOT* need to remove the KRX3 module with all its cables. Ed's time of 1.5 hrs sounds about right for someone working carefully and methodically, doing the job for the first time. There's no soldering, of course, but still a fair bit of mechanical disassembly/reassembly. After doing it several times, I can probably do it in 30 minutes or a bit less without rushing. Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Pratt Sent: Saturday, March 19, 2011 3:49 PM To: Edward R. Cole Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Installed K3EXREF That seems quite a long time to install it, Ted. What's involved? I have looked for the manual on-line but it does seem to up there yet. Any more details would be appreciated; I'd like to order one. 73 de David G4DMP In a recent message, Edward R. Cole kl...@acsalaska.net writes It took me about 1-1/2 hours to install the new EXREF for referencing the TCXO to external 10-MHz. I have not installed the new firmware or tested it yet...more news, later. -- + - - - - - - - - - - - - - - - - + | 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] elecraf/K4TMC??
Oh...I know how this happens. K4TMC is a good guy...I'm sure someone cracked his e-mail account. On 3/19/2011 5:28 PM, Ron D'Eau Claire wrote: If you analyze the header from one of the e-mails, you may discover that it didn't really come from your e-mail account or your machine. It's common for malware to infect a computer and read the 'address book' in that machine. If the user of that machine had ever received or downloaded an e-mail from you, your address is in the list. The malware grabs an address at random as the sender. In this case it was your e-mail address. It's happened to me once in the past 15 years, but once was enough. Still, there's no sure solution. Ron AC7AC -Original Message- Gary and all Elecraft users, I apologize for any spam that has been generated from my email account. I have taken measures to hopefully preclude this from happening again. Somehow, after over 10 years with the current account, my email account was compromised. Not sure how it happened, but I started getting hundreds of failed email notes in my spam filter. Since no one notified me of the issue, I was not aware of it until yesterday afternoon. 73, Henry Pollock - K4TMC -Original Message- From: Gary K9GSgaryk...@wi.rr.com To: 'Elecraft'elecraft@mailman.qth.net Sent: Sat, Mar 19, 2011 5:28 pm Subject: [Elecraft] elecraf/K4TMC?? I'm sure by now everyone has seen the elecraf spam that got posted to the reflector. I've got a filter set up in my e-mail client to filter out k4...@aol.com Even after all of this, every time I connect to my server to retrieve mail another copy shows up in my spam filter. I'm up to 50+ today alone. Is anyone else seeing this? Do I need to do anything else to get rid of this or do I possibly have some malware lurking on my computer? And no, I didn't click on the link in the spam e-mail. Spammers should be hung by their genitals and slowly skinned with a rusty pocket knife. -- 73, Gary K9GS Check out K9NS on the web: http://www.k9ns.com Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.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] Installed K3EXREF
Is the K3EXEREF production or still in test? I see no mention of it on the Elecraft WEB site, I have 10Mhz, just nowhere to plug it. Roger VK3ADA. On 20/03/2011 10:13, Ron D'Eau Claire wrote: Installing the K3EXREF involves installing a connector/cable assembly in the REF. hole in the K3's rear panel and running the cable under the RF board to the front panel shield, then up behind the front panel shield. The other end plugs into the TMP connector on the KREF3 reference oscillator board that sticks through the hole in the shield. -- Roger de Valle Genette Pty Ltd 03 5330 3081 0407 320 121 __ 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] K3/10 in Attic Looking for Six Meters
Maybe the cards are stacked against me, but I would like to go for the six meter band ssb. My problem is low power and attic location for antennas. Presently, I have a 66' piece of wire (center fed dipole) which works great (for PSK, CW and JT65-HF) using the ATU in the K3. I would like to get the group's opinion on antenna options or do I have to upgrade with the KPA100? 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
Re: [Elecraft] K3/10 in Attic Looking for Six Meters
Frank, Before you consider higher power, get the antenna outside. Even 100 watts to an attic antenna can be problematic in some cases. If you have no choice for the antenna, then go for the KPA100 but start out at lower power levels to see what happens, devices plugged into the house wiring often do not like the presence of RF and do crazy things, and you can bet that the house wiring will pick up RF from the antenna. 73, Don W3FPR On 3/19/2011 8:01 PM, Frank MacDonell wrote: Maybe the cards are stacked against me, but I would like to go for the six meter band ssb. My problem is low power and attic location for antennas. Presently, I have a 66' piece of wire (center fed dipole) which works great (for PSK, CW and JT65-HF) using the ATU in the K3. I would like to get the group's opinion on antenna options or do I have to upgrade with the KPA100? Thanks in advance. __ 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] Installed K3EXREF
Field Test. 73, Eric WA6HHQ _..._ On 3/19/2011 4:19 PM, Roger de Valle wrote: Is the K3EXEREF production or still in test? I see no mention of it on the Elecraft WEB site, I have 10Mhz, just nowhere to plug it. Roger VK3ADA. On 20/03/2011 10:13, Ron D'Eau Claire wrote: Installing the K3EXREF involves installing a connector/cable assembly in the REF. hole in the K3's rear panel and running the cable under the RF board to the front panel shield, then up behind the front panel shield. The other end plugs into the TMP connector on the KREF3 reference oscillator board that sticks through the hole in the shield. __ 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] K3/10 in Attic Looking for Six Meters
A lot depends upon the composition of your roof. Some are rather opaque to RF, and that goes up with frequency. Certain tile roofs are the worst, IMX. OTOH, as Don points out, look at ways to get the antenna outside, even just marginally outside. A full half wavelength is only 10 feet lone (well 9.36 for 50 MHz), so a decent radiator need be only 9.36 feet long and 10 feet or so above the earth. Even if it can be only inches from some surface, such as your roof, it'll likely be better than anything in side. And it can be very thin wire almost impossible to see from a few feet away. If you can do nothing, try the current antenna, assuming you have open wire feeders to minimize the losses. That will at least give you a starting point. Ron AC7AC -Original Message- Maybe the cards are stacked against me, but I would like to go for the six meter band ssb. My problem is low power and attic location for antennas. Presently, I have a 66' piece of wire (center fed dipole) which works great (for PSK, CW and JT65-HF) using the ATU in the K3. I would like to get the group's opinion on antenna options or do I have to upgrade with the KPA100? 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 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] Installed K3EXREF
I installed it on Friday in about 30 minutes, but I'm comfortable with my way around the K3. I would think that most users could install it in about an hour or less. Installation is actually very simple with very few parts involved. K3EXREF came with an SMA connector and SMA to BNC between-series adapter. Performance is exactly as promised by Elecraft. Although K3EXREF will not phase lock the K3 to the external frequency source, I'm finding that it stays within 1 Hz on 20m when locked to CHU at 14.670 MHz. I'm also finding that testing for zero-beat to WWV at 10 MHz is not a good idea in my shack, and perhaps yours too. There are many 10 MHz signals being emitted by nearby appliances, LAN routers, security system, Ethernet boards, etc. That common, even frequency is everywhere in a household these days. In much of North America, CHU is an excellent source for testing since it keeps cesium accuracy like WWV but the odd frequency of CHU is a real benefit since the chance for beating against extraneous signals is much smaller than at 10 MHz. Testing at a higher frequency rather than say the MW broadcast band also provides for a reasonably good account of how the K3EXREF performs. After installation, I would also suggest not trying to test zero beat K3EXREF against commercial MW or SW BC stations since their carriers are allowed to deviate much more than the cesium-based time and frequency standards of CHU and WWV. Commercial AM broadcast station frequencies are typically only accurate to about +/- 20 Hz although most are better than that. The K3's 49 MHz oscillator is only adjusted at intervals between 4 and 8 seconds by K3EXREF in order to minimize jitter. The K3 retains its original phase noise performance since the external reference is not used internal to the K3's frequency generating scheme. Think of it this way -- K3EXREF is like lightly touching the 49 MHz oscillator with a feather every few seconds if necessary to keep it within 1 Hz or so. Also, the K3 frequency stays accurate even at the moment of powering up the K3. Kinda' fun to watch the 49 MHz oscillator display change during warm-up as it's being corrected and compared against the external reference. External references: There are three primary types, and all can be purchased for less than USD $150 on the used market. Cesium standards (a fourth type) are also available but are generally much more expensive, complicated, and won't offer any benefit to K3 users since K3EXREF limits resolution and accuracy to about 1 Hz. The first type is the GPS Disciplined Oscillator (GPS-DO). This type of standard locks itself onto the visible GPS satellites orbiting the sky. Requires a GPS antenna and is self-calibrating to the GPS satellites. The GPS-DO's time and frequency averages from the visible satellites, each satellite having it's own on-board cesium-based oscillator. Long-term accuracy is usually good to at least 1 x 10^-11. Extreme accuracy and only a magnitude or two behind cesium. Look for Hewlett-Packard Z3801A, Z3816A, Trimble Thunderbolt, Brandywine, Symmetricon, and Datum models. Short list, but many others available. Rubidium is the next type. No GPS tracking needed. Accuracy commensurate with GPS-DO. No antenna required. Long-term performance is highly dependent on the quality of the optical beam from the rubidium pump lamp. Look for EF Efratom, Datum, Third, is a high quality oven-controlled crystal oscillator (OCXO). Requires periodic calibration. Accuracy good to at least +/- 0.05 ppm and offer the best phase noise performance among the three types of oscillators, but as noted earlier, the excellent phase noise attributes of the OCXO will not be carried over to the K3. A shack reference oscillator is good for use with other equipment too (e.g., frequency counter). Although a bit lossy, I currectly use a Mini-Circuits passive three-way splitter, but one can purchase a distribution amp to feed many pieces of equipment from a single oscillator. Unlike the splitter, a DA offers unity gain and very high port isolation. Finally, be mindful that most GPS-DO and rubidium units use internal switch-mode DC-DC converters. Switching noise was bad enough on two of my units that I decided to gut the converters and used an outboard triple-output linear supply. The Trimble Thunderbolts that have been retired from the cellular industry require an external triple-output supply. If choosing this model, get a linear type and avoid the headaches. Paul, W9AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT elecraf/K4TMC??
Henry, It is likely that your computer is or was infected with some malware that allows it to be used as a spam relay. Get a friend (who has an un-infected PC) to download and burn the AVG Rescue CD from avg dot com (it's free). Boot and scan from the CD and see what it finds. (I am an AVG customer, but have no other connection with them.) 73 Paul ZL3IN On 20/03/2011 11:11 a.m., k4...@aol.com wrote: Gary and all Elecraft users, I apologize for any spam that has been generated from my email account. I have taken measures to hopefully preclude this from happening again. Somehow, after over 10 years with the current account, my email account was compromised. Not sure how it happened, but I started getting hundreds of failed email notes in my spam filter. Since no one notified me of the issue, I was not aware of it until yesterday afternoon. 73, Henry Pollock - K4TMC __ 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] 4a4a
I'd like to thank Elecraft for the K3 enabling myself to pickup Oceania No1 spot for 4a4a contacts; http://www.revillagigedo2011.com/search.html?query=VK4TUX All on the same ocf dipole too. It was a great activation with great ops. 73 Adrian VK4TUX __ 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
