[Elecraft] KPA500 single input and output
I suspect that many of us have separate antennas for different bands, most likely for HF and 6m. The two antenna inputs on the K3 work very well for that purpose and switch automatically when I switch bands. That is why I am curious why the KPA500 does not at least have two switched outputs with band memory like the K3. This is one feature I am going to loose when I start to use the KPA500, which I have ordered. Raj, N2RD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KXV3A need RXA mod?
I have been updating my K3 #170 with the past mods to bring it uptodate. I replaced the KXV3 option with newer KXV3A. In my update packet, I also received RXA mod kit. Am I correct in assuming that I do NOT need this mod kit? Raj -- -- Rajiv Dewan, N2RD FN13fc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KXV3A need RXA mod?
It does make sense to leave it out. I tried looking at the schematic to see if the KXV3A had the RXA mod but I could not find the appropriate schematic. Thanks, Raj, N2RD On 8/24/2010 12:23 AM, Don Wilhelm wrote: Raj, I don't know why the RXA mod kit is being shipped with the KXV3A. The website says this mod has been incorporated in all K3s since January 2008. Yes, I would assume that it is already included with your KXV3A. You might want to wait for a more authoritative answer, I am only going by the information on the website. In the absence of explicit instructions to add it, I would leave it out. 73, Don W3FPR Rajiv Dewan, N2RD wrote: I have been updating my K3 #170 with the past mods to bring it uptodate. I replaced the KXV3 option with newer KXV3A. In my update packet, I also received RXA mod kit. Am I correct in assuming that I do NOT need this mod kit? Raj -- -- Rajiv Dewan, N2RD FN13fc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K144XV 2M Module and W2 Wattmeter on Web Order Form
I asked this very question at Dayton. The K144XV will cover 4Mhz of the 2m band while the XV144 only covers 2MHz. What I do not know is if K144XV allows 2m reception on the subreceiver. Raj, N2RD On May 27, 2009, at 3:55 AM, Svend Spanget wrote: OK, the new K144XV-F costs 349.95. Also needed is KXV3A_UPGR (39.95). A total of 396.90. This is 26.95 more than XV144 and you don't have the inconvenience/pleasure of building it yourself. The noise figure is worse and the output power less than the half. Are there any benefits at all with K144XV-F (besides not having an extra box on the desk)? 73 de Svend, OZ7UV TDC Bredbånd for 0 kr. - Spar 695 kr. Se http://tdc.dk/freemailtilbud/ Denne mail er sendt via Mail på TDC Online - Læs mere om TDC's mailtjeneste på http://mail.tdconline.dk/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Elecraft's website down? I keep getting network timeout
This is probably 8 days too late, but the site may be down because of a whole lot of new products being announced. Apple takes it's site down while updating for new products. Elecraft is following he same strategy. Look for a spectrum display that beats the one built into ICOM7800 in responsiveness and sensitivity, the new amplifiers 800 and 1500W, gps disciplined oscillators, and more. Just wait a bit... Raj, N2RD On Apr 9, 2009, at 12:52 PM, Chris Wagner wrote: Hope this is temporary. what's the cause? -- Kind Regards / Mit freundlichen Gruessen Chris Wagner KF6VCI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 with 1000 Hz filter
I am using the 1Khz filter. It is my most used filter for CW, my primary mode of operation on HF. My whole filter complement is 2.8KHz, 1Khz, 400Hz and 250Hz. So for all width settings between 1Khz and 400Hz, I use this filter. Regarding efficacy, I only recently got the 1KHz filter. Before getting this filter, I would be using the 2.8Khz filter when I set the width to 500Hz. There was a larger difference in noise level between 400 and 500Hz, more that just the change in bandwidth would indicate. I attributed this to having a wide roofing filter. Now that is much less the case. This is purely subjective, with no electrical measurements. YMMV. Raj, N2RD On Aug 10, 2008, at 9:25 AM, Tony - KM0O wrote: Hello everyone, I've just been informed by Elecraft that my KRX3 will be ready to ship in a couple of weeks, and I need to decide on filters for it. I'm wondering about the 1000Hz filter. Who out there is using it, and for what purposes, and what can you tell me about its performance? 73, Tony / KM0O -- View this message in context: http://n2.nabble.com/K3-with-1000-Hz-filter-tp684023p684023.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KRX3 Installed and Working
FYI, KRX3 ordered along with K3 on 5/2 (K3 #170) Received Friday 7/25, installed and running today 7/29 (was out of town :( ) Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] re: [K3] Poor performance on 6M
My experience agrees with Roger: poor 6m receive performance on hearing weak signals. I am going to measure the MDS to see if it is all OK. Raj, N2RD K3 #170 [EMAIL PROTECTED] wrote: My experience was just the opposite. I had the K3 and TS-2000 side by side and the K3, without any external preamp, heard signals that the TS-2000 could not pull out. That was a strange opening. I have an ARR 6 meter preamp that I can plug into the back of the K3, but that is in the basement. There is one advantage with the TS-2000, in that I knew if I was within 30 KHz of K8EB, who is 11 miles away with a monster signal! I purposely would get within 5 kHz of him on the K3, and never heard him. I was jumping between my home rig, and my remote base, which is also a TS-2000, which is a very easy rig to remote control. But I found my local K3 better than either 2000. I ordered my 2nd K3 a while ago, to replace the TS-2000 at the six meter remote base. tom, K8TB Roger K8RS said, K3 Group, I was looking forward to the ARRL June QSO Party this weekend to see how the K3 did on 6M. Result: Not very well! When a fellow ham called to correct a Grid Square report that I had missed, I knew I'd have to switch over to my Kenwood 2000 where I could hear much better, The change was so dramatic that I was floored. Obviously, we need a lift on 6M receive! Transmit seemed fine with solid reports, but the weak audio on receive was a severe handicap. More later! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] [K3] Poor performance on 6M
Connected up my signal generator to the antenna input. I can discern a CW signal at -137dBm. This is with the 250Hz filter. I used an uncalibrated HP8640B sig gen. This seems to match the ARRL reports. Another 5dB would be nice. Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Jun 18, 2008, at 8:36 PM, Ken Kopp wrote: FWIW, mine seems fine on 6M and I live in a quiet country area. I can hear band noise when I connect the 1/4 wave GP antenna. 73! Ken Kopp - K0PP [EMAIL PROTECTED] ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] [K3] Disable 5mHz
And its not just Australians. I have no use for a ssb only band either. We'll just wait for that feature update. Raj, N2RD On Mar 22, 2008, at 11:23 PM, Greg wrote: Not as of yet but we do have a feature planned for band mapping that will allow you to choose which bands are available when using the Band UP/ DN switch. All bands will still be available via your memories, direct freq entry and CAT commands. 73 Greg AB7R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Douglass Sent: Saturday, March 22, 2008 5:54 PM To: elecraft@mailman.qth.net Subject: [Elecraft] [K3] Disable 5mHz Hi All, Still trying to figure out all out all the 'ins and outs' of my K3. Quick question, can I turn off the 5mHz band, so when I scroll through the bands using the up and down band buttons, it doesn't show up?? We don't have access to this in Australia, and I don't have any real interest in listening in!! thanks David, VK2NU ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] RTTY and K3
Hi Lee, Here is my set up for RTTY with just the sound card and vox. 1. Connect speaker out from sound card to line in on the rear panel of K3. 2. Connect line in on sound card to line out on the rear panel of K3. 3. Go to main menu, use vfo b to select mic select and vfo a to select Line In 4. Turn on Vox by holding the Vox button. 5. Go to Main menu, select Vox using VFOB and pick a value for Vox gain. I have it set at 15 or so. 6. Use Mic to set line gain appropriately. Mine is at 15 or so. 7. With mode Data, press DATA MD and select AFSK A And you are all set. To turn on text decode, press TEXT DEC and turn it on using vfo A. Easy as pie. Raj, N2RD Lee Buller wrote: I am reading the book here and trying to understand how to set up RTTY or PSK with the K3. What gets in my way is the RTTY reading and generation algorithm. I am not all that excited about that right now, but I am just trying to get my sound card hooked up to the Input and Output with PTT as well. Three simple cables and I am sure where all that goes. What is confusing is how to set up the radio. AFSK-A is selected by the B Vfo when you use Data MD. So supposedly, the line out audio which goes in the sound card will work, but more importantly, the line in of the K3 will accept the audio generated by the soundcard. I don't have to turn on the TEXT DEC unless I want to see the RTTY message on the K3's screen. Once I get FSK set up and I would them change VFO B to FSK D. I think that is right...or have I taken a wrong turn... Lee In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Update failed
Hi Al, Are you using the latest drivers from the Prolific site? I had a similar problem that I fixed with a driver refresh. Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Feb 18, 2008, at 7:59 PM, AD9P wrote: I was able to update to MCU 1.68, but the DSP update failed. I am using Vista and the usb to serial adapter. Any thoughts? Thanks Al AD9P -- View this message in context: http://www.nabble.com/Update-failed-tp15550818p15550818.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KUSB Update
I was having difficulty updating my K3 with the latest version of the DSP code. On Greg's recommendation I updated the KUSB driver and that solved my problem. I could not find the link to KUSB driver on the Elecraft site, but found them on www.prolific.com.tw. The device is PL-2303. I updated the driver from 2.0.0.18 to 2.0.2.8 (on WinXP SP2) and it solved the DSP update problem via KUSB. Raj, N2RD K3 #170 K2 #5613 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Fwd: [Elecraft] ERR TXG Message es tnx
Seems like you got the TX GAIN error while doing the initial power calibration. That is what I had. Here is what did it for me. (Greg's suggestion on checking REF CAL). Turn the rig on and wait at least 15 minutes for he reference oscillator to stabilize. Waiting is important. My reference oscillator moved by 19KHz in the first 15 minutes. I have the optional TCXO installed. Perhaps, you do too. After that, first do the REF CAL with WWV. Then re-do the VCO Cal. Followed by TX calibration. Hope this works for you, Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Jan 1, 2008, at 6:17 PM, Greg wrote: Carey. You still need to do the TX Gain calibration. That's what is causing your error. Page 46/47 of the manual. Set power to 5W and hold TUNE for a couple seconds on ALL BANDS. Then, if you have the KPA3 installed, you need to do the same for ALL BANDS at 50W. Let me know how it goes. 73 Greg AB7R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of H. Cary III Sent: Tuesday, January 01, 2008 2:56 PM To: elecraft@mailman.qth.net Cc: Richard AD7FZ Subject: [Elecraft] ERR TXG Message es tnx The reference oscillator is now aligned with WWV - thanks to N0SS, W3FPR, DJ7MGQ, and AD7FZ for responding so quickly - Tom talked me through it thankfully. I just did the Transmitter Gain calibration and get an error message - ERR TXG - on all bands 160-6. So after passing all the tests/checks during the build, I seem to be alignment challenged Even more frustrating is the detail on the error message in the book says it could affect one or two bands (how about ALL?) and indicates a problem with band pass filter alignment or one of the low pass filters. Could one of the J-pin connectors be the first place to look? BTW, the good news is the receiver in my K3 is absolutely fantastic! One day, it'll all come together... HNY 73, Cary, K4TM K2-100 #5266 K3-100 #0178 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 #170 CW Filter oddity
I have 250Hz, 400Hz and 2.8KHz roofing filters installed. After update to the latest firm ware I am noticing that the radio goes really deaf when the 250Hz or the 400Hz filters are used. I have set the appropriate gain of 4db and 2db, respectively for the 250Hz and 400Hz filters. The FLX FRQ is 0.0 for all. But the deafness is much more profound than a few dB. I noticed that the peak in my signal is not where CWT indicates perfect tune While I am tuned to a CW signal at 7.02706KHz, I turned on CONFIG:DDS FRQ and noticed that this frequency changes from 3.581367 MHz to 3.581579 MHz and the radio goes deaf. No change in tuned frequency. I checked that the FL FREQ for these filters is 0.0. What gives? Does any of you have the same behavior? Regards, Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 #170 CW Filter oddity
Added note: the change in the DDS frequency occurs by just changing the filter width or selecting the narrower filters. Raj Rajiv Dewan, N2RD wrote: I have 250Hz, 400Hz and 2.8KHz roofing filters installed. After update to the latest firm ware I am noticing that the radio goes really deaf when the 250Hz or the 400Hz filters are used. I have set the appropriate gain of 4db and 2db, respectively for the 250Hz and 400Hz filters. The FLX FRQ is 0.0 for all. But the deafness is much more profound than a few dB. I noticed that the peak in my signal is not where CWT indicates perfect tune While I am tuned to a CW signal at 7.02706KHz, I turned on CONFIG:DDS FRQ and noticed that this frequency changes from 3.581367 MHz to 3.581579 MHz and the radio goes deaf. No change in tuned frequency. I checked that the FL FREQ for these filters is 0.0. What gives? Does any of you have the same behavior? Regards, Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] REF OSC Frequency
Great suggestion Greg. I did not have an appropriate cable to hook into J1 on KEF3. So I unhooked it from KSYN3 and used the cable to J2 and some clips I had. I have an HP5343A counter slaved to an HP3801Z GPA stabilized 10MHz reference. Using this setup, I measured the frequency of the KREF3 (with KTCXO option) at 30 second intervals from cold start. Here is what I got: Time min:sec - Frequency 49.xxx.xxx MHz, only the KHz part is noted below: 0:00 - 361.250 0:30 - 361.261 1:00 - 361.306 1:30 - 365:350 big jump!! 2:00 - 377.346 another big jump!! 2:30 - 377.380 3:00 - 377.419 3:30 - 377.471 4:00 - 377.464 4:30 - 377.457 5:00 - 377.507 5:30 - 377.504 6:00 - 377.500 6:30 - 377.490 Turned off and on right away 377.405 Is this normal? Thanks for the suggestion to check this. I am now going to turn it on, wait for ten minutes, set the REF CAL and then do the VCO calibration. PS: I am also forwarding it to the elecraft list as the frequency drift seems interesting. Raj, N2RD Greg wrote: Raj. You need to do the REF CAL procedure. If you do not have an accurate frequency counter for method 1, use method two using USB/LSB to zero beat WWV. Set the radio to 10.000 MHz or 15.000 MHz. Alternate between USB and LSB while listening. Adjust the ref oscillator frequency so that there's no change in the tones. What's probably happening is the RO is off by enough that when you use the narrow filters you are loosing the signal as its outside the passband. Let me know how it goes. I'll be up for awhile longer. Greg -Original Message- From: Rajiv Dewan, N2RD [mailto:[EMAIL PROTECTED] Sent: Monday, December 31, 2007 6:37 PM To: Greg Subject: Re: [Elecraft] K3 #170 CW Filter oddity It is the default 49.380Mhz. Raj Greg wrote: Raj. What freq is your reference oscillator set to? Greg -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rajiv Dewan, N2RD Sent: Monday, December 31, 2007 4:49 PM To: [EMAIL PROTECTED]; Elecraft List Subject: Re: [Elecraft] K3 #170 CW Filter oddity Added note: the change in the DDS frequency occurs by just changing the filter width or selecting the narrower filters. Raj Rajiv Dewan, N2RD wrote: I have 250Hz, 400Hz and 2.8KHz roofing filters installed. After update to the latest firm ware I am noticing that the radio goes really deaf when the 250Hz or the 400Hz filters are used. I have set the appropriate gain of 4db and 2db, respectively for the 250Hz and 400Hz filters. The FLX FRQ is 0.0 for all. But the deafness is much more profound than a few dB. I noticed that the peak in my signal is not where CWT indicates perfect tune While I am tuned to a CW signal at 7.02706KHz, I turned on CONFIG:DDS FRQ and noticed that this frequency changes from 3.581367 MHz to 3.581579 MHz and the radio goes deaf. No change in tuned frequency. I checked that the FL FREQ for these filters is 0.0. What gives? Does any of you have the same behavior? Regards, Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: REF OSC Frequency
Greg, You are right about the bold faced caution on Page 47 and indeed I waited long before doing the REF CAL, which I did using Method 2 with the cover closed. However, I am still surprised by the frequency excursion measured on start up. I did wait a lot longer and calibrated it using method 2, zero beating it with WWV. This was at ref cal value of 49,379,611, which is a lot closer to the frequency noted on the sheet that came with the TCXO - 49,379,964. With the ref cal set, I have re done VCO CAL and other calibrations. For now all seems to be as it should be. I have my fingers crossed. Thanks for your help, Raj Greg wrote: Raj, You have to read the manual when doing thisPlease note this BOLD FACED caution on page 47. Before attempting reference calibration, allow the transceiver to warm up at room temperature for about 15 minutes (cover on). Greg -Original Message- From: Rajiv Dewan, N2RD [mailto:[EMAIL PROTECTED] Sent: Monday, December 31, 2007 7:38 PM To: Greg; [EMAIL PROTECTED] Cc: Elecraft List Subject: REF OSC Frequency Great suggestion Greg. I did not have an appropriate cable to hook into J1 on KEF3. So I unhooked it from KSYN3 and used the cable to J2 and some clips I had. I have an HP5343A counter slaved to an HP3801Z GPA stabilized 10MHz reference. Using this setup, I measured the frequency of the KREF3 (with KTCXO option) at 30 second intervals from cold start. Here is what I got: Time min:sec - Frequency 49.xxx.xxx MHz, only the KHz part is noted below: 0:00 - 361.250 0:30 - 361.261 1:00 - 361.306 1:30 - 365:350 big jump!! 2:00 - 377.346 another big jump!! 2:30 - 377.380 3:00 - 377.419 3:30 - 377.471 4:00 - 377.464 4:30 - 377.457 5:00 - 377.507 5:30 - 377.504 6:00 - 377.500 6:30 - 377.490 Turned off and on right away 377.405 Is this normal? Thanks for the suggestion to check this. I am now going to turn it on, wait for ten minutes, set the REF CAL and then do the VCO calibration. PS: I am also forwarding it to the elecraft list as the frequency drift seems interesting. Raj, N2RD Greg wrote: Raj. You need to do the REF CAL procedure. If you do not have an accurate frequency counter for method 1, use method two using USB/LSB to zero beat WWV. Set the radio to 10.000 MHz or 15.000 MHz. Alternate between USB and LSB while listening. Adjust the ref oscillator frequency so that there's no change in the tones. What's probably happening is the RO is off by enough that when you use the narrow filters you are loosing the signal as its outside the passband. Let me know how it goes. I'll be up for awhile longer. Greg -Original Message- From: Rajiv Dewan, N2RD [mailto:[EMAIL PROTECTED] Sent: Monday, December 31, 2007 6:37 PM To: Greg Subject: Re: [Elecraft] K3 #170 CW Filter oddity It is the default 49.380Mhz. Raj Greg wrote: Raj. What freq is your reference oscillator set to? Greg -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rajiv Dewan, N2RD Sent: Monday, December 31, 2007 4:49 PM To: [EMAIL PROTECTED]; Elecraft List Subject: Re: [Elecraft] K3 #170 CW Filter oddity Added note: the change in the DDS frequency occurs by just changing the filter width or selecting the narrower filters. Raj Rajiv Dewan, N2RD wrote: I have 250Hz, 400Hz and 2.8KHz roofing filters installed. After update to the latest firm ware I am noticing that the radio goes really deaf when the 250Hz or the 400Hz filters are used. I have set the appropriate gain of 4db and 2db, respectively for the 250Hz and 400Hz filters. The FLX FRQ is 0.0 for all. But the deafness is much more profound than a few dB. I noticed that the peak in my signal is not where CWT indicates perfect tune While I am tuned to a CW signal at 7.02706KHz, I turned on CONFIG:DDS FRQ and noticed that this frequency changes from 3.581367 MHz to 3.581579 MHz and the radio goes deaf. No change in tuned frequency. I checked that the FL FREQ for these filters is 0.0. What gives? Does any of you have the same behavior? Regards, Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber
Re: [Elecraft] Shipping status page has been updated
Don't feel so bad Don. I put down 50% on May 2 and I am yet to see the shipping invoice. I am leaving next week for Xmas and probably will not see the rig until next year. Raj, N2RD Don Rasmussen wrote: New K3 orders received after Dec. 10th are targeted March delivery. Alrighty then, if you were wanting to believe that what has been a 6 month wait up until now will turn into a 3 month wait for orders placed today - I guess this news is good for you! ;-) For someone that expected his May 11 order in August, November, and December - it means standby while we get the rest of the May 4 kits out, then we're gonna make some built units, then we'll get right back to you. My guess about 7 months of wait total. No whining, complaining, or unhappiness here - just the facts m'aam! (notice - a recycled apostrophe from the Apostrophe Bank is contained in an informal contraction within this message.) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3
A significant portion of the functionality of K3 is software defined. Elecraft has already indicated this will be 'one-click' updateable using WinXP. These kinds of modern radios can really be modified significantly by software alone. Consider the improvements in Ten-Tec's Orion and Flex-Radio's SDR-100o over their 2/3 three year lifespan. Both of them are significantly better than when they were introduced. Now throw in the super customer responsive culture of Elecraft and we can safely predict that the K3 will be steadily and significantly upgraded on a continual basis. Regards, Raj, N2RD K2 #5613 and K3 on order. On May 31, 2007, at 9:34 AM, Roy Morris wrote: Although the K3 has not hit the market yet, the question of whether this radio will be updatable has surfaced. I am sure Wayne and Eric have their plans regarding this, and perhaps these are premature questions. I will ask anyway. Will the manual have a comprehensive troubleshooting section that will isolate problems to specific boards? Will there be an exchange program for boards that need to be repaired or upgraded? Will new upgrade (redesigned) boards be made available for purchase? Will the K3 be as upgradable (beyond options) as the K2 has been? Thanks. Roy Morris W4WFB ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Reuse Inrad 8.215Mhz Yaesu Filter?
I will be replacing my Yaesu 1KMP with the K3. My Yaesu rig has some Inrad and Yaesu optional Tfilters for the 8.215Mhz IF. Will I be able to use them in the K3? Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Reuse Inrad 8.215Mhz Yaesu Filter?
So a little ham-ingenuity may be needed, easy enough... Raj, N2RD On May 14, 2007, at 10:51 AM, [EMAIL PROTECTED] wrote: N2RD: I will be replacing my Yaesu 1KMP with the K3. My Yaesu rig has some Inrad and Yaesu optional filters for the 8.215Mhz IF. Will I be able to use them in the K3? It's my understanding the filters are identical electrically, but use a different mechanical configuration. Therefore, the answer to your question is NO. At least not as drop in and plug and play. With a bit of extra wiring or a DIY adapter they ought to be useable, afaik... ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Yaesu FT-2000 v K-3?
There is a basic difference in the choice of IF frequencies. The Y2K main receiver has first IF at 69.45MHz, second at 450khz, and last at 30Khz for the DSP. The Elecraft has the first IF at 8.215Mhz and the second at 15Khz for DSP. This choice reveals a lot. There are many more choices (bandwidth, skirt, etc) for crystal filters at reasonable cost for a MF frequency such as 8.215 than for a VHF frequency of 69.45Mhz. Not surprising that Y offers only 15, 6, and 3Khz bandwidth filters for the first filter (roofing filter) at 69.45Mhz. Elecraft already has many more choices and still more to come. My guess is that with so many options available for the first filter in the rig, Elecraft will handily beat the Y2K in most receiver measurement numbers. Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On May 10, 2007, at 9:48 AM, Lee Buller wrote: Arthur The FT2000 looks like a fine radio and if its like the FT1000MP...well...it will be a winner. But, the K3 looks like a fine radio too. But it boils down to this You can order at FT2000 right nowand get it in a week or so. You can order a K3 right nowbut you are going to wait away. How long? Very hard to say, but I think that E has been deluged with orders. So, the backlog is going to be rather hugh. I don't think they are shipping until the middle of the summer. There are a lot of offerings out there now with the new OMNI and the FT2000 and FT450 and now the K3. Knowing what my K2 does...and how well it works...and how much I love the radio...I am waiting for the K3. The k3 has features on ti the I,Y,K and the T have not provided. I think the RX numbers will be fantastic... well very competitive. The K3 has been engineered for Hams by Hams. That is a plus. Knowing the guys at E and understanding what they've done over the years, I think that my money is on the guys from Aptos, CA. So I would pick E over I, Y, K and T at this point.,,,but you going to have to WAIT! Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense devine? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] In the Federal Register
The changes to Part 97 have appeared in the 11/15/2006 edition of the Federal Register. So they will go into effect on 12/15. Does this imply that the amps (KPA 800 and KPA1500) will be available on 12/15? Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Another odd behavior
I suspect the regulation in the Astron. Can you put a DVM on that, preferably one with an real meter, to detect a voltage change? Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Nov 6, 2006, at 3:31 PM, Stephen W. Kercel wrote: Fellow Elecrafters I've discussed this phenomenon with the technical support people at Elecraft, and so far they have no explanation for the following. I have a K2 powered by an Astron 35 amp power supply. All power connections and all leads coming out of the K2 are heavily shielded for RF, and I have a good RF ground. I recently added a RigRunner DC power strip between the Power Supply and the K2. The RigRunner has three LEDs, Red for overvoltage, Green for normal voltage, Yellow for undervoltage. Since I'm well within nominal voltage, the green light always shows. The problem is that when I'm in QRP mode running CW, the green led gets BRIGHTER in key down than key up. It does not do this in QRO mode. It does it on various bands and at various VFO frequencies with a given band, and it does it for both real antennas and a dummy load. Any thoughts on this would be appreciated. 73, Steve Kercel AA4AK ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KAT100: Strange K2/100 Behavior During Tune
Here is another simple explanation. Perhaps it is voltage drop on your power supply. You probably have the best match and most power output on the 40m band, Is your power supply up to it? A simple way to test this is to turn the power out down by 30W or so. Not enough db wise to make a difference if it is an rf interefence issue but will considerably reduce the demand on your power supply. Raj, N2RD On Sep 16, 2006, at 5:20 PM, Jonathan Taylor, K1RFD wrote: In this case the antenna is a simple coax-fed 40M dipole with a balun at the feedpoint. Without the KAT100 in line the SWR is approx 1.2 to 1 at 7100 where the problem occurs. A quick check shows that yes, the problem seems to occur only on 40m. I also noticed that other accessories on the same power supply re-set themselves when it happens, supporting the foldback limiting theory and the work-around that Tom posted and Mark pointed out. However, it happens only when the KAT100 is in line; I cannot reproduce it at any frequency or power level when the KAT100 is disabled. - Original Message - From: Don Wilhelm [EMAIL PROTECTED] To: Jonathan Taylor, K1RFD [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Saturday, September 16, 2006 4:47 PM Subject: RE: [Elecraft] KAT100: Strange K2/100 Behavior During Tune If it is RF feedback, the proper way to deal with it is at the source - in your antenna system. An easy way to check it is to cut a quarterwave wire for each band that is troublesome - attach one end of the wires to the ground terminal on your tuner and the other end just stretches out and attaches to nothing excpet an insulator. There will be high RF Voltage on the open end of the wires, so keep them clear of human and pet contact and keep them far enough away from objects to prevent arc-overs (treat the far ends sort-of-like the end af an antenna). If these wires correct the problem, then you do have work to do on the antenna system. If they do not help, then you can look further for a K2/100 or KAT100 problem. From your description, I would think something is causing a very high current draw (even for a very short time) - your power supply may be going into foldback limiting and the K2 powers off momentarily. The other possibility is that the resettable fuse in th ebase K2 is tripping and causing the power off condition (yes - it is powering off since you see the ELECrAFt on the display). Is this by any chance happening most frequently on 40 meters? 73, Don W3FPR -Original Message- I have a K2/100 with a KAT100. For the most part, all works well as expected. Intermittently, though, when I press the TUNE button, the KAT100 will chatter briefly as if finding a match, and then it suddenly stops and the K2 acts as if its CPU has been re-set; the bargraph and the LCD go blank briefly, then the ELECrAFt sign-on message appears briefly and finally the frequency is re-displayed. During this time, however, the power supply indications are normal and the LCD backlight remains on. This problem seems to be frequency-dependent and seems to happen more often at high power, which leads me to think it is an RF feedback issue. However, I've noticed that turning the power down to bottom end of the high-power range (approx 12 W) usually doesn't help, yet turning it slightly lower than that, to get into the low-power range (approx 10 W), does. Any advice on how to solve it? Thanks ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: Powerpole compatibilty
15A, 30A, and 45A will all mate together. The only difference is in the ferrule that accepts the wire. The higher amp ones accept larger wires. 15A accepts wire #20 to #16 wires. 30A accepts #16 to #12 wires. 45A accepts #14 to #10 wires. The housing is the same across these three and they will mate with each other. Regards, Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] DMM Recommendation
One of the characteristics I look for is response time / refresh time / time to read. It is much easier to make adjustments that depend on measured voltage or resistance if the meter quicks refreshes the readings. Some multimeters, especially some of the Flukes, are excellent in this regard. For example Fluke 170 series will detect open and short conditions as short as 250 micro seconds. It also has a loud beeper and I find it to be a great continuity checker. Regards, Raj, N2RD K2 #5613 John Young wrote: Paul I think meters are like shirts - one size does NOT fit all. I have my 20 year old Fluke 73, several $2.99 Harbor Freight DMMs and some in between. Each fills a need. In the case of the Harbor Freight it is almost cheaper to buy a new meter than replace the 9v battery. When you blow up a cheap meter you can just pull out a spare and get back to work. 73 John WA8KNE Paul Neuman wrote: I looking to purchase a decent DMM and would appreciate any recommendations of specific models. I've had two crappy Radio Shack DMMs blow up on me. Each time I bought one, I promised myself it was only until I could get something good ordered and then promptly put it off. Well now I'm DMM-less again and I'm in the middle of installing my 3080 option. I'm looking through the Mouser catalog and there are so many choices. I guess I can't go wrong with a Fluke. Would like something for $100 but I don't want to be buying one again in two months. No HV or special requirements. Thanks in advance. Paul ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] For Sale: N2PK single detector VNA +extra pcb
Dear All: I just built my second N2PK VNA using VE3IVM's board. So my first one is now for sale. Specs: As described in http://users.adelphia.net/~n2pk/ Built and tested by me in Fall 2005. Built on Greg Ordy's board kit The Valpey Fisher Oscillator is installed on the board Single Fast (LTC2440) detector and corresponding N2PK mods Four board mounted SMA connectors (LO out, LO in, RF out, Det in) Second PCB included so that you can build and add a second detector (no parts, only PCB) PCB for bridge included (no parts, just plain PCB) To use the single detector VNA, you will need to add a SMA jumper for LO, and a power supply (12v 25mA, 5v 250mA, as described in N2PK's documents.) And of course, your PC, a case, any othe connectors, etc. You will also have to build your own calibration standard and reflection bridge. Price: $300 which is just my part cost (no shipping, just parts) ($80 for Greg's mini kit, $25 for extra PCB, $40 for VF Oscillator, $156 for parts not in the minikit, some of these parts are hard to obtain and require multiple shipments. I have not included any shipping cost I incured in acquiring these parts ). I will ship in US using USPS for free. It was working when tested a week ago. But I have not tested it extensively and so it is on an as-is basis. DOA guarantee for a week. Best regards, Rajiv ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] QSK revisited
After my last email on comparing QSK implementations in the K2 and the Yaesu FT-1000MP and the comments from knowledgeable people on this forum, I decided to measure carefully and to make more careful notes on what I heard. I setup a K2 and an MP to transmit at the same frequency into dummy loads. To test the K2, I transmitted continuously on the MP at a level where the K2 showed a steady S9 signal. While this was being received by the K2, I set up my keyer to transmit the letter v at different speeds on the K2. I listened to the K2 and analyzed the sound using Spectrogram. I then did the whole thing with the MP as the device under test. The details of the test, the results, and images of the Spectrogram screenshots can be found at http://rajiv.dewan.info/qsk/ My subjective opinion is that the K2 is great if all one is interested in is inter-character or inter-word reception. In fact, the hang time is so well calibrated that it is very silent and easy on the ears. This is especially important for long contests. Inter-element reception is very demanding. For this purpose, I prefer the Elecraft K2 while transmitting up to 20wpm. At 25wpm or greater, the K2 essentially does not receive between elements. At 30 wpm Yaesu still has a usable QSK implementation but the extra noise is tiring. I do not think I could stand the noise from 30wpm or faster for long during a long contest. Hang time can be increased (Menu item 7-4 increased from 5 to 7 or 10ms) to where the QSK would be essentially be useless between elements but would serve some purpose to detect signals between words. With the increased hang time, where inter-element QSK is essentially disabled, I prefer the K2 as the Yaesu remains noisier. I will have to try even larger hang times and compare the sound. Hope you find this interesting, Raj, N2RD K2#5613 -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 Vs FT1000MP QSK
I will have to redo my tests. As I think about it, it may have been between letters that I was hearing rather than between elements. The thumping on the Yaesu with the delay setting of 0 certainly put me off the Yaesu as it got really tiring really fast. I will try to optimize the timing for the Yaes and use Spectrogram to hear instead of my ears and see what I come up with. Thanks for all the input. I have gone back and checked out the past discussion on improving K2 QSK by modifying R17. Regards, Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Jul 20, 2006, at 10:49 AM, [EMAIL PROTECTED] wrote: You created your own problems with the FT1000MP. The QSK setting does not actually change the speed of anything but the reenabling of the audio. When you set the QSK to 0 the audio comes back on before the radio even unkeys, hence all thumping. Neither the MP nor the K2 have fast QSK. Both can no longer hear between elements after about 22 wpm at best, though you can hear between leters. But you must set the MP QSK timing slower, which will not slow down the QSK, only disappear the audio clicks and thumps. How slow? Well... a dit or an element space at 60 wpm is 20 ms long. Certainly no need to set it any shorter than that! Experiment, but I know you will be surprised and pleased how nice the Mp sounds when set to 20 ms, and the reality of the QSK is that it will not be slowed by increasing the audio delay so that you don't hear the actual switching of stages. Have fun! 73 Fred - kt5x K2 # 700 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] QSK
Did an A/B comparison of QSK between the K2 and my Yaesu 1KMP that I have owned for many years. To give Yaesu all the advantage I could, I set the delays to zero, no linear, set the linear switch to off (it affects the timing), and turned on the DSP. The received audio on the Yaesu was horrible compared to the K2. While the K2 was smooth, almost as if I did not have breakin turned on, the Yaesu audio was full of low frequency thumps and distortion so much so that it made it hard to copy well between morse elements. I was transmitting at around 35wpm. I was using cascaded 500Hz filters on the Yaesu and the K2 filter was at the 400Hz setting. I also have the INRAD roofing filter installed on the Yaesu. Yaesu: fully loaded with all crystal filers and the roofing filter K2: Stock with KDSP2 But, I guess that the people on this list already know this! I bought the K2 to use primarily as an IF rig for VHF and up. I was planning to use the Yaesu for all HF contesting. I am now changing my mind. I just ordered the KPA100/KAT100 combo. I mostly do LP, CW contesting. The K2 seems ideal. Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Antenna Nut: It can't be this hard
I had exactly the same problem. I tried for a long time and gave up. I got a nut from another BNC connector in the junk box and it went on right away. Something is not right with those nuts. A recommendation for all new builders: try it before you install the antenna jack. It is probably not a bad idea to try out all the nuts for connectors / jacks before installing them. Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Jul 18, 2006, at 11:19 AM, Michael Cook wrote: Hi all. I've been assembling my K2 since thursday and having a ton of fun. Last night I just finished the last assembly steps and I'm about to move on to the third set of testing (and aligning) of the transmitter. There is just one thing that has got me stuck: the nut that goes on the antenna jack. This can't POSSIBLY be this hard. I've tried. I've had someone else try. I just can NOT get the thing on. It seems impossible to get the thing on straight. If I do get it to catch it quickly seems to end up crooked and then falling off. Is there some kind of special secret here? I've even tried screwing it on backwards (CCW instead of CW) but that didn't work (no surprise). Tips? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2/XV with Writelog
I tried to use my K2/KIO2/XV combination with Writelog for last weekend's CQWW VHF competition and failed. I hooked up the K2 to a serial port and set it up on Writelog. While Writelog recognized the rig and could set the frequency, it went crazy while polling the rig for frequency. It would keep cycling through all the bands and show random frequency that seemed to change with each poll. (BTW, the combination worked just fine with N1MM logger.) Has any one else noticed this? Any fix? Thanks, Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: [WriteLog] K2/XV with Writelog
Symptom: Freq polling shows wrong frequency and cycles through the bands Rig: K2 with the KIO2 and 4 transvertes XV50 thru XV432 Serial port: 4 port PCI card RocketPort Following Hank's suggetion, I tried the single COM1 that I have on the motherboard. On this the K2 and Writelog work. There is no problem. I have not had a problem with any other rig on the Rocketport. Indeed, my Yaesu 1KMP has no problem on the very port where K2 does not work. I also do not have a problem with N1MM logger and any COM port. Very odd. It is only the combination of Writelog and the PCI Serial Ports that have the problem. With our without the XVs I still have the problem. Essentially K2 - Writelog - PCI Serial Port are a no-go combination. Very odd. Could something in my KIO2 be busted? Or is it a design issue? Why shouldn't K2 work with all logging programs if hooked up correctly? Thanks, Raj, N2RD k8dd wrote: I have not had that happen on a real COM port, but I had that happen with one USB - Serial cable. I tried all the settings in the Ports section in WriteLog and could not get it to quit going through the bands. When I switched to another USB - Serial cable the problem went away. Not sure why! 73HankK8DD On 7/17/06, Rajiv Dewan, N2RD [EMAIL PROTECTED] wrote: I tried to use my K2/KIO2/XV combination with Writelog for last weekend's CQWW VHF competition and failed. I hooked up the K2 to a serial port and set it up on Writelog. While Writelog recognized the rig and could set the frequency, it went crazy while polling the rig for frequency. It would keep cycling through all the bands and show random frequency that seemed to change with each poll. (BTW, the combination worked just fine with N1MM logger.) Has any one else noticed this? Any fix? Thanks, Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ WriteLog mailing list [EMAIL PROTECTED] http://lists.contesting.com/mailman/listinfo/writelog WriteLog on the web: http://www.writelog.com/ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: K2 KSB2 de K9DMV
I used a Heil Proset. I already owned one and used it with my Kenwood. When I built the K2, I realized that it was easiest if I followed the Heil Proset scheme as it is the easierst to jumper on the board. I then opened up the adapter cord and wired it accordingly. It works well and is highly recommended. Regards, Raj, N2RD JOSEPH SZCZUBELEK wrote: Raj, I am in the process of building a K2 with the KSB2 SSB option. What kind of microphone were you using when you got that good audio report. I am trying to find out what are the good microphones to use with the K2. Best, Joe Szczubelek - K9DMV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 with XV144: TX offset without RIT/XIT
Problem was: SSB transmit offset by 540Hz. In reply to Steve's question: No, I did not have the RIT or XIT engaged. Easy enough mistake to make despite the flashing indicator. :( Just to dot the i's and cross the t's, I recalled that I had not set not set BF2-4 in CAL-FIL for SSB when I installed the unit. I re-did the CAL FIL calibration yesterday after diagnosing the problem. I transmitted into a dummy load and listened on a nearby receiver and found that now I seem to be on frequency, at least on the HF bands. I dunno if this makes any sense. Perhaps I was on Fil2 with the factory BFO setting for the filter. In any case, listening on HF I now seem to be spot on. I noticed the problem yesterday while having a 2m qso using the XV144. I will try some on the air tests with the XV144 tonight. Hope to get it all squared away before the CQWW VHF this weekend. Thanks for your note, Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] LO Power for XV transverters
I have a full stack of XVs and just migrated to a K2 for IF. Each of the XVs has a crystal oven. I notice in the stock config for K2, the LO power jumper at JP9 is 1-2. (All other jumpers are set as recommended for K2 IF with 0dBm drive and split paths.) Following the schematic it seems to imply that the LO and oven will be on only when the band is selected on the K2. I would prefer to have all the LO and Ovens be on when K2 is on. It seems that I can achieve this by switching the JP9 jumper to 2-3. Is this correct? Any downside to this change? I am running this in my shack to the incremental current draw is not an issue. Any thoughts appreciated, Raj, N2RD K2 #5613 -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Signal Generator manual
Hola Eduardo: You can download it from http://cp.literature.agilent.com/litweb/pdf/08657-90157.pdf Raj, N2RD Eduardo Jacob wrote: Hi I have got a 2nd hand HP 8657B RF generator that needs some fixing. I am searching the service manual which in HP's numbering is 08657-90007. Does anybody have a PDF copy of it? Regards Eduardo/EA2BAJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 5613 Lives
Just wanted to report that K2 #5613 lives. I just made a couple of q's, one in MN (from NY) and another to YO. Time to start working on the options. All the best, Raj, N2RD Rajiv Dewan, N2RD K2 # 5613 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 #5613 BFO low freq problem
As suggested in the note, I added 2pf NP0 from my junkbox from X3 / X4 junction (where it connects to L33) to ground. This fixed the problem. With this mod: BFO High 4917.00 BFO Low 4912.48 Range 4.52 They all seem fine. Thanks for you help, Raj, N2RD Leigh L. Klotz, Jr. wrote: Rajiv, You might want to send mail to [EMAIL PROTECTED] for your case, but here's the advice I got. Note that mine was #3121 your advice from Elecraft may be different: http://www.ac6rm.net/mailarchive/html/elecraft-list/2005-08/msg00562.html 73, Leigh/WA5ZNU Rajiv Dewan, N2RD wrote: I am building K2 #5613 and having a great time. I am doing Alignment and Test Part II. My problem is the following: BFO High Freq 4,916.98 KHz and it is greater than 4916.3 as it should be. BFO Low Freq 4,912.92 KHz, this is higher than what it should be (4,912.7). Although the range is OK (4.06Khz is the range I get, which is greater than the minimum 3.6KHz) , the lower freq seems a little off. As background, I calibrated the frequency (C22) quite accurately using my HP5342 counter slaved to a HP GPS 10Mhz reference. All other prior tests were just fine. What should I do about BFO Low Freq being higher than it should be? Suggestions welcome. Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 #5613 BFO low freq problem
I am building K2 #5613 and having a great time. I am doing Alignment and Test Part II. My problem is the following: BFO High Freq 4,916.98 KHz and it is greater than 4916.3 as it should be. BFO Low Freq 4,912.92 KHz, this is higher than what it should be (4,912.7). Although the range is OK (4.06Khz is the range I get, which is greater than the minimum 3.6KHz) , the lower freq seems a little off. As background, I calibrated the frequency (C22) quite accurately using my HP5342 counter slaved to a HP GPS 10Mhz reference. All other prior tests were just fine. What should I do about BFO Low Freq being higher than it should be? Suggestions welcome. Raj, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] (no subject)
Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I have already built. Since I plan to put these options in, is there an optimal option build schedule? Will I have to undo work to put in these options? I don't like de-soldering! Any suggestions, ideas are welcome. BTW, I am an avid kit builder / home brew enthusiast. My most recently completed project is the N2PK VNA. Other than the XVs, I have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and Binaural receiver combination, and many other projects. Regards, Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] (no subject)
Great suggestions Don. I will do as you suggest: read the options' literature and prepare myself for them while still preserving the incremental approach as far as possible. Headers and push on jumpers instead of wire jumpers are a sure bet. Thanks for the other suggestions. I am sure I will need the group's wisdom to tackle some problem before long. Thanks, Raj Don Wilhelm wrote: Raj, Since you appear to be relatively skilled based on your list of successful projects, you could decipher the installation instructions for each of the options and as a minimum, install the headers and use jumpers pushed into the header pins instead of soldering the jumpers onto the K2 boards. I do it that way most of the time during construction. The KNB2 requires changing resistors on the RF board, but the K2 will work just fine if you install the resistor and jumper as instructed in the KNB2 manual (just don't do IP3 measurements without the 6dB pad in the KNB2 installed). C167 can be inserted into the KSB2 header, and C6 can be inserted into the K60XV 3 pin header. I recommend that you not install D19 and D20 nor change C71 to the 120 pf value until after you have completed the K2 without the K60XV option - that will leave you with one capacitor (C71) to desolder. One caveat - if you do not understand completely what to do and how to do this, then build it step by step as instructed in the manual. There is not really a lot of desoldering to be done when installing these options. Your other possible path is to buy the 'Rework Eliminators' and follow their instructions. 73, Don W3FPR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Rajiv Dewan, N2RD Sent: Monday, June 26, 2006 4:17 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] (no subject) Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I have already built. Since I plan to put these options in, is there an optimal option build schedule? Will I have to undo work to put in these options? I don't like de-soldering! Any suggestions, ideas are welcome. BTW, I am an avid kit builder / home brew enthusiast. My most recently completed project is the N2PK VNA. Other than the XVs, I have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and Binaural receiver combination, and many other projects. Regards, Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.4/375 - Release Date: 6/25/2006 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] (no subject)
Great note Mark. I am looking forward to the project. I will check out the rework eliminators. I think that an incremental approach is the best and will follow your advice about building the basic K2 and testing it first. The XVs are all Elecraft ones. I ordered the XV432 right after coming back from Dayton. They had them in Dayton but I saw no reason to contribute to the OH treasury. When I got that built, I decided to go the K2 route. I like the idea of automating the whole thing right from the K2 front panel and so I opted for and bullt the XV50 even though I have a very nice SSB tranverter for that band. So now I have a stack of 4 XVs, just waiting for the K2 to be ready! The KK7B binaural receiver is neat. I had built that a while ago but never really played with it much. Last year I built the IQ-PRO DDS symthesizer that puts out two RF signals in quadrature. Used that to feed the binaural receiver. I put that near my bed so that I listen to the HF bands as I fall asleep. The binaural receiver is neat. Definitely recommeded. Thanks again for your note, All the best, Raj, N2RD Mark Schreiner wrote: Hi Raj, Sounds like you have a fun project coming up. I built my K2 with all those options as well as the KAT2 about just over one year ago. We used it for Field Day both last year and this year and worked great, as well as some amazing DXing on the lowbands during last winter. As far as the options go I'm not sure if you also got the rework eliminators, which some folk have been using to more easily do the upgrades later (as well as unplugging the options without having to solder/resolder/unsolder a few caps and resistors). You might consider those. I recall that there was some disassembly of the main RF board to install the K160RX and/or K60XV, while all other options were fairly painless to install otherwise. I would recommend getting the basic K2 built and tested first before going forward too far with the other options. Test it out on the air to make sure things all seem okay before proceeding further. Then, install one option at a time and test it out again to make sure that both the rig and the option works as it should. The testing period should slow down the building process because once they are all built that is it until you build something else, so enjoy it while you can! I loved building mine, along with all the options, but now that it is done (and I'm out of dollars for a while) all I can do is operate, which is fine as well. Did you get the Elecraft XVs or do you have Down East Microwave or some other XVs? All of my DEM XVs have been in storage for over 5 to 6 years now since I moved but I'm starting to get the itch to pull them out to interface them with the K2 for a portable/rover VHF/UHF setup. I just built the 4-bay 432 MHz loop as shown in July QST and plan to build a 2-bay loop for 220 MHz and another for 2m, all with male threads on the top of the 5' section of 3/4 pipe and female threads on the bottom so that they can be screwed into each other depending on if I want to use all, one or only two select antennas (and to make them shorter for transporting). I still have to build the 4-way splitter/combiner yet for 432 as well. I know of another ham that uses the DEM XVTRs with a K2 and he said it has been working well for him. I hope to find out in time for the August UHF contest! Oh, I have questions for you also about the IQ-VFO and the Binaural Rx. I have the IQ-VFO built and working but still need to finish it off into a nice project box. I had planned to use it with an R2/T2 combination, but am also interested in trying it with a binaural Rx. How do you like the Binaural Rx? BTW, KK7B, Rick Campbell, was my favorite professor when I was studying for my BSEE at Michigan Technological University back in the late '80s. 73, Mark, NK8Q K2 4786 Allentown, PA (FN20) Rajiv Dewan, N2RD wrote: Just arrived: K2 #5613 with KSB2, K160RX, K60XV, KNB2, KIO2, and KDSP2 for use as IF rig for the four XVs (50, 144, 222, 432) that I have already built. Since I plan to put these options in, is there an optimal option build schedule? Will I have to undo work to put in these options? I don't like de-soldering! Any suggestions, ideas are welcome. BTW, I am an avid kit builder / home brew enthusiast. My most recently completed project is the N2PK VNA. Other than the XVs, I have also built the DSP-10 2m rig, KA7EXP Power meter, IQ-VFO and Binaural receiver combination, and many other projects. Regards, Raj, N2RD -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http
Re: [Elecraft] Re: SMD-based kits and retirement [not!]
I built a couple of Elecraft transverters which use a mix of SMD and conventional parts. They came with the SMD components soldered in. For higher frequencies, some parts like chip capacitors are in fact better because they has less stray/component inductance. Yes, SMD are daunting but they can be done at home. There are plenty of advantages: - newer ics, and other devices, better designs - much much smaller finished products, a real plus for portable QRP gear The other are ways of mitigating the problems with size: 1. Throw in a few extra capacitors/resistors. This will only increase the cost by a buck or two and take the anxiety away. 2. Solder in the really fine pitch parts. 3. Change/reeducate the homebrewers to install parts by variety/type/value rather than component number. I have built a number of SMD / part SMD based projects (dsp10, iq-vfo, AA908) and actually find installing some parts, like 1206 resistors easier and faster with SMD rather than the leaded parts. Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Apr 20, 2005, at 9:45 AM, Mike Morrow wrote: Wayne wrote: We'll pre-install SMD replacements in future kits should that become necessary. If SMDs start to dominate, we'll up-level the kits so that the builder is still working with small units: individual modules that are small PCBs with some or all SMDs. That's the ideal solution, IMHO. I'd love to see a K1 or KX1 type rig with nearly all SMD componets...as long as *all* of these SMD components were completely pre-installed on the PCB. Kit parts inventory would be easier, opportunity for builder error would be greatly reduced, most importantly the kit could be completed much more quickly, etc. The builder would still get familiar with the circuit design and get to align the unit (i.e., all the higher-level skills part of the kit-building experience would still be present). The use on pre-mounted SMD components is the one outstanding design feature of MFJ's otherwise unremarkable Cub series of QRP rigs. It would be great to see something similar in an Elecraft rig, even before the scarcity of through-hole components forces it. I'd buy one, whether I needed it or not. 73, Mike / KK5F ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Missing 12v for oscillator on XV222
I am having a problem with a recently built XV222. When I initially buit it, it was working and went thru the calibration testing with flying colors. After initial testing it sat on the shelf for a while. I tried to use it for a recent VHF contest. The symptom: No 12V on JP9 Pin 1 and so there is no 12V for the oscillator. There is 12 V on Pin 5 and Pin 3 of JP9. The 5V regulator U4 also has 12V input. Any suggestions? As an aside, the XV144 that I built is working fine. Raj Rajiv Dewan, N2RD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Transverters
The transverters are excellent. Easy to build and awesome performance. I ordered my first Elecraft product, a XV144 - the 2m transverter, a week ago. Took just a few hours to assemble it, and it was easy to align and setup. I have done a fair bit of kit building and home brewing (DSP10, Tandem Match, KK7B R1 and R2, and others). This is smoothest kit yet. And in Elecraft tradition, the outcome is world class. Just see the review of the transverter in October's QST Product Review. It beats the Down East Transverter hands down and measures up to the gold standard - the SSB LT2S which cost $900 (and is not available any more.) The closest commercial competitor today is DB6NT's TR144H that costs a $1,000 Euro - about $1,200 and its still incomplete (needs special options/parts to work with low power transverter outputs like that from Yaesu 1KMP, provide IF swithcing, etc). I am so impressed with Elecraft's transverter that just after building the XV144, I ordered the XV222. Can't wait for the XV432. If only I could rig up a pan adapter for the K2, I'd use that as an IF rig instead of the Kenwood 850. I guess I've joined the family of Elecraft fans. Regards, Raj -- Rajiv Dewan, N2RD [EMAIL PROTECTED] FN13fc -- On Sep 1, 2004, at 10:28 AM, Paul wrote: Reflector members, Just a note about the Elecraft Transverters... So very little has been written or posted on the reflector about these units. These deserve a much higher profile in the product line. I urge every Elecrafter to try out one of these kits. It compliments the K2 line so nicely and the rigs perform so well! I put together two of them and they do liven up the activity in the shack. I will complete the third one this fall. I cannot speak more highly of the units. Performance, as expected is right up there with the entire K2 line. If you have given any of transverters a consideration and then hesitated or not made the purchase - please - reconsider and do make the purchase!! You will have a blast working with them. They are high performance - and they look so good with the K2. Thank you Paul K8QT #3479 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
