[Elecraft] kat2 question
Hello all, I have completed the assembly of my kat2 and am at the testing phase. The question is: I hear relay clicking when going thru the display settings for L0-L8, C0-C8, N1 N2, but NOT for CALn,CALP, CALS, AUTO, ALT and POUT. Is this normal? Thanks in advance 73 Dan Daniel Grizzard Extra Class af4lb __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] kat2 question
Dan, That is quite normal. 73, Don W3FPR On 1/9/2011 2:58 PM, Dan Grizzard wrote: Hello all, I have completed the assembly of my kat2 and am at the testing phase. The question is: I hear relay clicking when going thru the display settings for L0-L8, C0-C8, N1 N2, but NOT for CALn,CALP, CALS, AUTO, ALT and POUT. Is this normal? Thanks in advance 73 Dan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KAT2 question abt voltage at U4, pin7
After a recent calamity while attempting PSK31, where I introduced 13.5v into microphone jack pin 6 (a 5v line), repairs have been made, and I have made contacts in both cw and ssb modes. However, I seem to be getting more HI CURRENT warnings on bands and at power levels where previously, I did not. I re-initialized the KAT2, and, as I cycle through L0-L8 and C0-C8, all relays provide a nice click. I performed the dc voltage checks at the bottom of KAT2 manual, page 22. Everything was fine, except for U4, pin 7 where I got a reading of 4.74v instead of the 0v or nearly 0v that the manual implies I should see. Could this be the cause of the HI CURRENT warnings? Thanks for your consideration. 73, Jef Fox kc9gbx **Great Deals on Dell Laptops. Starting at $499. (http://pr.atwola.com/promoclk/10075x1217883258x1201191827/aol?redir=http://ad.doubleclick. net/clk;211531132;33070124;e) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KAT2 question abt voltage at U4, pin7
Check the actual power with an external wattmeter - set the power control to 5 watts and transmit, then tell us if the actual power is near 5 watts or near the maximum power (12 watts or over). It is possible that U4 is faulty. Pin 7 is not used - there are 2 op amps in the LM358 package, so if the one having its output at pin 1 is OK, power will be controlled and it does not matter what pin 7 does because it is connected to nothing. The power output check above will tell if the output at U4 pin 1 is working. 73, Don W3FPR kc9...@aol.com wrote: After a recent calamity while attempting PSK31, where I introduced 13.5v into microphone jack pin 6 (a 5v line), repairs have been made, and I have made contacts in both cw and ssb modes. However, I seem to be getting more HI CURRENT warnings on bands and at power levels where previously, I did not. I re-initialized the KAT2, and, as I cycle through L0-L8 and C0-C8, all relays provide a nice click. I performed the dc voltage checks at the bottom of KAT2 manual, page 22. Everything was fine, except for U4, pin 7 where I got a reading of 4.74v instead of the 0v or nearly 0v that the manual implies I should see. Could this be the cause of the HI CURRENT warnings? Thanks for your consideration.73, Jef Fox kc9gbx Great Deals on Dell Laptops. Starting at $499. http://pr.atwola.com/promoclk/10075x1217883258x1201191827/aol?redir=http://ad.doubleclick.net/clk;211531132;33070124;e __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.233 / Virus Database: 270.10.16/1930 - Release Date: 02/02/09 07:51:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KAT2 question
Hello Geoff, I have a quick question, as I have been using an MFJ tuner to a balanced feedline on a doublet, and have not built a balun for the K2/KAT2 yet. Is there a bypass mode for the KAT2 such that I can use an external tuner? ATU AUTO, of course, causes the KAT2 to go thru a tune cycle when pressing the TUNE button on the K2. Yes, its possible. If you use the KAT2 as SWR/wattmeter only, the matching network is disabled/bypassed. Switch your KAT2 via the menu to CALS (for SWR display) or CALP (for power meter). -- 72/73 de Ingo, DK3RED - Don't forget: the fun is the power! [EMAIL PROTECTED] - www.qrp4fun.de DL-QRP-AG #824 - www.dl-qrp-ag.de QRP ARCI #11295 - www.qrparci.org DARC #2360404 - www.darc.de ___ 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] KAT2 question
Thanks to all who replied! 10 minutes after emailing, I found the answer in the manual! A bit fuzzy with the flu here - maybe I should get some rest before I toast something in my K2!!! geoff - W1OH Ingo Meyer (DK3RED) wrote: Hello Geoff, I have a quick question, as I have been using an MFJ tuner to a balanced feedline on a doublet, and have not built a balun for the K2/KAT2 yet. Is there a bypass mode for the KAT2 such that I can use an external tuner? ATU AUTO, of course, causes the KAT2 to go thru a tune cycle when pressing the TUNE button on the K2. Yes, its possible. If you use the KAT2 as SWR/wattmeter only, the matching network is disabled/bypassed. Switch your KAT2 via the menu to CALS (for SWR display) or CALP (for power meter). -- * Geoff Allsup, W1OH [EMAIL PROTECTED] or [EMAIL PROTECTED] Research Engineer Upper Ocean Processes Group Woods Hole Oceanographic Institution Woods Hole, MA, USA * ___ 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] KAT2 question
In a recent message, geoff allsup [EMAIL PROTECTED] wrote ... Is there a bypass mode for the KAT2 such that I can use an external tuner? ATU AUTO, of course, causes the KAT2 to go thru a tune cycle when pressing the TUNE button on the K2. Yes, Geoff, you will have met that while building your K2. If you want to bypass the ATU, in the menu set ATU Pout. 73 -- David G4DMP Leeds, England, UK -- ___ 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: Re: [Elecraft] KAT2 Question
Don Wilhelm wrote: R6 is not to be installed until some initial checks are made. The manual will tell you when to add it. I got caught out by this and had to unsolder one end later. The manual needs to explicitly state that R6 is not installed with the other resistors. If you can't find the spot in the manual, download the .pdf version and an Adobe Reader search for R6 will find it for you. -- David Woolley Emails are not formal business letters, whatever businesses may want. RFC1855 says there should be an address here, but, in a world of spam, that is no longer good advice, as archive address hiding may not work. ___ 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: Re: [Elecraft] KAT2 Question
G'day, | R6 is not to be installed until some initial checks are made. The | manual will tell you when to add it. | | I got caught out by this and had to unsolder one end later. The | manual needs to explicitly state that R6 is not installed with the | other resistors. I guess most of us installed it when the manual told us to, not when we fancied doing it. In that context the manual does explicitly state when to install it. Regards, Mike VP8NO ___ 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] KAT2 Question
At Don and others, when reading the manual it instructs you to install R3, R4 and R5 but not to confuse R5 with R6, is R6 supposed to be installed in this step as well, browsing through the manual i cannoth find any other direction to install R6. Thanks, Matt KD8DAO ___ 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] KAT2 Question....is mine working?
Chuck, Did you ever hear the relays click once? Like the first time you attempted a TUNE with that antenna. The KAT2 remembers the tuning settings for each band (on each of ANT1 and ANT2), and when that band is selected there are some clicks from the KAT2 when the bandchange is made along with the bandswitching relay clicks from the K2, so it is hard to tell them apart. If the SWR is already at 1, then further presses of TUNE will only result in an occasional relay click if any at all - becuase it is already tuned. You may have no problem at all - just the nice operation of the stored settings for the KAT2. If the wattmeter in your KAT2 is properly set for reflected power, all is working OK. 73, Don W3FPR -Original Message- I just finished my KAT2, everything cal'd and aligned according to the manual using my DL1 dummy load. When I hook the tuner up to my (10 - 40M) attic dipole and use the tune, I am expecting to hear some relay sounds, but nothing? Within a few second the tuner turns off and give me a (allways) SWR of 1.0 : 1 across all bands. The same is true, even 80M. I really expected to hear some kind of clicking from the relays using 80M, given what it is feeding into. ___ 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] KAT2 Question....is mine working?
No, that is why I posted. Perhaps I should be pleased, but instead I am bothered. Last night in testing/playing, have gone to the low and high end of every band and tuned. Always with the same result. I hear the start/stop beep (but no relay clatter), then 1.0 -1 as the setting. I have changed the display mode to SWR and swept portions of the band in TUNE (at 1 watt) with the same result 1.0 - 1 everywhere? One other else thing I noticed (last night), Right now Ant 2 is not connected, my plan is to have that connected to the DL1, but when I was working last night it was not. I was listening to 40M, the band seemed good and was on a pretty stong signal. Then while playing with the controls, I decided to switch over to Ant 2, expecting to hear silence (the K2 is quiet), to my surprise I heard the strong signal breaking in, then being squelched. I thought the isolation between Ant 1 and Ant 2 should have been high enough to avoid this. Then 1 went up in freq. abit around 7060 kHz and found that even noise would break through occasionally, this again surprised me, I could perhaps understand a strong signal, but just noise...? So my concern is that on transmit I am getting some spill-over/leakage into the other Antenna channel. Thanks, again. -Original Message- From: Don Wilhelm [mailto:[EMAIL PROTECTED] Sent: Saturday, November 04, 2006 7:47 AM To: Chuck; elecraft@mailman.qth.net Subject: RE: [Elecraft] KAT2 Questionis mine working? Chuck, Did you ever hear the relays click once? Like the first time you attempted a TUNE with that antenna. The KAT2 remembers the tuning settings for each band (on each of ANT1 and ANT2), and when that band is selected there are some clicks from the KAT2 when the bandchange is made along with the bandswitching relay clicks from the K2, so it is hard to tell them apart. If the SWR is already at 1, then further presses of TUNE will only result in an occasional relay click if any at all - becuase it is already tuned. You may have no problem at all - just the nice operation of the stored settings for the KAT2. If the wattmeter in your KAT2 is properly set for reflected power, all is working OK. 73, Don W3FPR -Original Message- I just finished my KAT2, everything cal'd and aligned according to the manual using my DL1 dummy load. When I hook the tuner up to my (10 - 40M) attic dipole and use the tune, I am expecting to hear some relay sounds, but nothing? Within a few second the tuner turns off and give me a (allways) SWR of 1.0 : 1 across all bands. The same is true, even 80M. I really expected to hear some kind of clicking from the relays using 80M, given what it is feeding into. ___ 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] KAT2 Question....is mine working?
I just finished my KAT2, everything cal'd and aligned according to the manual using my DL1 dummy load. When I hook the tuner up to my (10 - 40M) attic dipole and use the tune, I am expecting to hear some relay sounds, but nothing? Within a few second the tuner turns off and give me a (allways) SWR of 1.0 : 1 across all bands. The same is true, even 80M. I really expected to hear some kind of clicking from the relays using 80M, given what it is feeding into. When in the cal mode I can get each one to click when using ht ATU parameters L0 to L8, C0 to 8 and N1,N2 I was able to get C55 down to 004 and R1 and R2 are aligned with what power the DL1 chart reads for voltage vs. output. Thanks, Chuck - K3TNT ___ 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] KAT2 question
Hi! Plaese help me with the KAF2-module in my K2. How I can adjusting null in CALn for best result? Can I use analog multimeter for best result? How? Thanks! 73! Alex de UR5LAM We have the perfect Group for you. Check out the handy changes to Yahoo! Groups (http://groups.yahoo.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] KAT2 question
Alex, Use your DVM to measure the voltage at the wiper of the reflected potentiometer - adjust for a minimum. If the minimum is high, then check your work - the diode orientation, the winding of the bifilar transformer, and other components in the circuit (look at the schematic to identify the related components). 73, Don W3FPR -Original Message- Hi! Plaese help me with the KAF2-module in my K2. How I can adjusting null in CALn for best result? Can I use analog multimeter for best result? How? Thanks! 73! Alex de UR5LAM ___ 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] KAT2 question
Good people: After all these years I have decided that I may add the KAT2 to my K2 lid. Although I have the KPA100, I use the K2 barefoot when travelling and feel the KAT2 would be of use. A quick perusal of the KAT2 manual suggests that, once the modifications to the K2 have been made for the KPA100, no further mods to the K2 boards are needed for the KAT2. I just thought, however, I would double check with those who know to verify this. Am I correct? many thanks, dave belsley, w1euy ___ 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] KAT2 question
David, Good choice - but next you will be needing an EC2 enclosure to mount the KPA100 so you can have a 'pick up and go' station. The changes you have already made for the KPA100 will work fine with the KAT2. Actually, fewer changes need to be made on the base K2 to install the KAT2 (I am speaking of the electrical changes rather than the insallation of the AUX RF jack on the RF Board. 73, Don W3FPR -Original Message- Good people: After all these years I have decided that I may add the KAT2 to my K2 lid. Although I have the KPA100, I use the K2 barefoot when travelling and feel the KAT2 would be of use. A quick perusal of the KAT2 manual suggests that, once the modifications to the K2 have been made for the KPA100, no further mods to the K2 boards are needed for the KAT2. I just thought, however, I would double check with those who know to verify this. Am I correct? many thanks, dave belsley, w1euy ___ 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
