[Elecraft] K2 to sell !
Before putting this transceiver on ebay, I will try direct! I want to sell my K2/100 to make money for a K3! It is composed of the following add-on : K2, by itself KSB2 KAT2 KIO2 K160 KAF2 KPA100 KAT100 The KAT100 is in the large box (identical to the K2) I include Power cable with Anderson connectors, the K2 cover with the KAT2 and KIO2 module. You will have also all tech books for all material (K2, KPA100, KAT2 and KAT100, KAF2, KIO2, K160. I just tested the transceiver and all bands give more than 100 watts I will also put the connection cable between K2/100 and KAT100. I do not have the liason with a PC, but having tested it with flying wires, it is working as expected (controled by MixW, HRD, WSPR). I ask $1.800 via PayPal exclusively. For USA expect around $80 for insured package. Bob F5UL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2/KSB2 problem
Hello all the team, particularly DON! Since some week I had a KSB2 problem. The K2 is working perfectly in CW, alone, or with the KPA100, with the KSB2 position jumpered. If I put KSB2 in place, the K2 Smeter display go to S9 + 40 block the receiver and too, does not switch in Tx when I close either the key or the mike PTT. I did this morning voltages test on KSB2, and the following list is the values not normal, as indicated page23 of KSB2Assembly instruction : U1-12 = 5.02 (TXC) U1-14 = 5.21 U1-16 = 0.00 U1-17 = 5.23 U1-21 = 0.00 (RXS) U1-22 = 4.27 (RXC) U1-28 = 4.92 U2-5 = 5.36 U3 OK U4-3 = 5.24 All these values where obtained in Rx. I did not check them in Tx as it was impossible to switch in Tx mode! All values not noted where per the book! If I remember well, the U1 is a new one! Best regards to Elecraft F5UL Bob __ 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] Antenna static charge precautions - any tips?
Hi, all! 10 years ago (in 2001) YL and myself changed our home location and our place of choice is very thunderstorm addictive!!! So, after burning an Drake TR7, I installed, on the antenna line a box with a big relay, turning on with whatecer 12 V PS I turned on swithching between a chock (2.5 mH National) when the PS is off, and a 1.5 Meg resistor with the PS on. The build up of static was resolved and I did not had any discharge with whatever TRX I am using (K2, Juma TRX2 and KX3). At this time I was running 600 W so the relay was able to support that power level (TR7 and L7A PA). Best 73 to all and GL with statics and thunderstorms!!! Bob F5UL __ 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] Xmas
Hello All, A Merry Xmas and also an Happy New Year 2008 for all the team in Aptos, with many many thanks for the super work done along 2007, specialy your accessibility for help other topics than the K3 distribution. Just go along in 2008 and further! F5UL, Robert Drogoul K2 #4498 - KPA100/KAT100 ARRL - Ref-Union ___ 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: Elecraft Digest, Vol 44, Issue 32
Hello Dave, It's normal, what you hear ! The direct connection to the d-sub connector is not recomended as it can damage either the computer or the transceiver. You will have to build the interface shown in the N3FJP software, either with transistors or with optical coupling ( prefered, no groud loop!). The result should be very nice with either interface. GL Dave! 73 from F5UL/Bob ___ 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 and serials ports (was KUSB vs K2)
Hi Toby I too run around troubles with USB to serial converters. The only one I had to use was a Prolific one and using it with XP Pro it was in place as it shoulld, but impossible to make any use with MixW. As I had to change my mother bord the one I got sitll had one Comm port and I had to make an adaptation to use it for CAT control and keying of my K2. I did that wit one female and two male DB9 plugs, and I got full control of the K2 with either MixW or HRD software. I can send the wiring I did to anybody interrested! 73 Bob/F5UL ___ 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] What is this stuff??
That is : Tin 62% Lead 36% Silver 2% Si it's safe for radio! F5UL - Robert DROGOUL Ref-Union - ARRL - EPC # 1952 K2 4498 - SSB - KPA100 - KAT100 Jerry wrorte : Hey gang: A friend drop off some solder he didn't need. I'm having trouble identifying it so figured I would ask you. Made by Kester ! Date of Man. is July 02 Part # 14-7150 SN62PB36AG02 Diameter is.015 I can't find anything on the internet.Is this stuff safe to use for radio ?? Just curious Thanks and 73 JerryN0JRN ___ 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 keyer missfinction
Hello the gang! A friend of mine (F8BDX) just finished his K2 and he is very eager user! He just have a small problem in CW. Using a bencher keyer thatr he was using with his TS450, he get some bad dot or dash at moderate high speed. From time to time asking for a dot he get a dash or wanting a dash he get a dot . We tried every way to correct that, and even with the dummy load directly at the K2 ant out, we have the same result. Does anybody had this malfunction, and eventually what solution is possible? I do not think it's a microcontroler bug. F5UL/Bob or direct to Jose/F8BDX [EMAIL PROTECTED] Thank's to all! ___ 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 Resistor Question...
Hi David I do not see any problem, at least for R6, 7 and 8. You have an M 10 db attenuator and mesuring R6 or R8 you have 100 ohmswith 168 ohms in parallel. So the result should be 62.68 ohms on you DMM! R7 is 68 ohms with 200 ohms in parallel so you should have 50.74 ohms! So as the series of resistors are 5% tolerance what you got on your DMM is largely within this parameter! 73 regards F5UL/Bob ___ 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 Power control
Hi the gang, Att Gary! I was going to test the new KAT100. A moment before, it was all right with all checks, the bridge balanced nicely. I was doing this test without the KPA100, directly at the K2 output without KAT2. No reactions from KAT100 (no led on, no detection bye ATU menu). Wth 5 w on power level, the output is more than 20 w, with I4.50 A. Tx off, power to 0, tune on output 20w for a few second then down to 0. tx off power max, tune on, output 20w, but no control with power level. Back to basic K2, withpout KAT100 or KAT2, same results. In this conditions, VREFDET around 1.3 v. If power =0 then VREFDET = 0. Well I,m lost once more. The KPA100 is running OK. The KPA100 look OK with resistances check. ___ 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 power control ...
In the lasr email ,I forgot to say that evec with more than 20w output on the power meter, the indicated power on the display was only 0.4 w!!! Rectification : about VREFDET it is 0.8 v , not 1.3v! VALC (Q8 emeteur) power set to 0 v=0.8, powet set to max v=2.6 v Puting back the KAT2 I have the same reaction power out ~20w with VREFDET 3.8 v whatever power asked for. With the KAT2 the display is giving the real power as I have on the external wattmeter (more or less 20/22w) Regards F5UL/Bob ___ 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 ordering!
Hi Brian, What you are trying to do for your GB Montessori School is exactly what I was going to do for a youg association here near Geneva. But I failes because I did not get any allocation for this project, as it was termed unnecessary!!! Well You did right with the K2, because when you finish the kit, by the book, you know and understand the transceiver as much as their conceptors. As you intend, take the SSB module, beside fone you will be able to run digital mode too. I waited two years before ordering the KPA100 and it is not yet in service! About a year after the K2 and SSB, I instaled the KAT2 antenna tuner. So you can do lot of things whith QRP level and I will not change anything but for another K!!! Good work Brian, best regards F5UL/Bob ___ 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
Subject: [Elecraft] K2 PA Heatsink
Hi Colin Absolutly normpal , I would say, I have to do that about two three time a year... Robert F5ul ___ 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, why change?
Hi Doug, I justalso finished the CWWPX Contest. Asou said the condx where weird et in surplus I had almost 24 hours of thunderstorms... Due to that conditions I lost a 2sc1969 in the PA and yesterday morning was passed to change the beast in order to continue!!! But as you tell all, the K2 is marvelous in a contest. I used mine barefoot and in spite of all disturbance I did 178 with 82000 points. It's far from last year where I finish 3d place monoband 7 Mhz QRP but I will do better next year!!! As you did, with mine, I used only 300 Hz filter, and only one antenna so I did not had the ATU use you had to do. I too did not use full QSK but a 0.2s delay. But in all other respect it was more agreable to use than any other TRx I had in all my life (and it was long, I'm 73 old, and 54 ham!!!) I ,wait for the K3. I will see next year if I can do something about that new beast!!! In the mean time 73 and GL! de F5UL Bob ___ 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: Elecraft Digest, Vol 37, Issue 46
Hi Tom The absebce of 90/150 and the -25V should indicate a disfunction of the Xtal oscilator driving the diodes string Check around Q6 (2N3904) you may not have any oscilation! 73 F5UL ___ 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] KPA100 - Super problem
Hi, Don and all the list Lasr Sunday, I was page 53 of the KPA100 manual, with every steps OK all the way up to securing the shield and closing the box! I had a very nice output, the KPA100 being direct with the K2 or with the remote EC2 case, Once the shield in place and verified for bad contact and so on, the next power up was a disaster. I did not switch to transmit!!! The resistors R21, R33 where burned out, RFC also, and after excanges with Don WFPR, diode D12 and D14 where also found in short. R22 and R13 where very hot, and the curent on the K2 display was about 1.6 A. So all off and after replacement and checking i'm at the following stage : with only the KIO2 connection or direct connection the curent flow from 12CTRL is around 1 A on the K2. Without PA power, only the KIO2 connection I do not get the NO PA PS information when turning on the K2. R13 is still very hot and R21 is hoter than normal. Pin #13 of U shold be at +4.9 V and insteed is at 0.1 V, as PIN #14. The 125 V is OK on R11. If I plug on the PA PS, I can not turn off the K2, his supply being done via 12CTRL line, either through the KIO2 or direct connection to J4. If I try to transmit even at 11 w level, I get a black cloud of smoke with R21 and R13 going blam I'm lost, Don , I changed the cap for .22µF and it's OK. Hoping for help from anybody Regards F5UL Bob ___ 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] KPA100 - K2 #4498
Hello all! The cKPA100 arrived Wenesday and was finished and going through full test yesterday. It was perfect and I stoped just before instaling the shield (it was tested first direct with the K2 and after was mounted in the separate EC2 with trhe same good results, from 115w on 3.5 to 82 watts on 28, CW and SSB). This morning I mount the shield with all verifications, install the KPA definitly in the EC2 and last verification with dumy load. Work fine under 11 watts, and at 20 watts dialed, the 25 amp (normal not switched!) supply goes down to 0.7 volt, and sure the 20 amp fuse blow! So I check the supply itself, all correct (it was working before withe a home made 200 watts PA), the K2 by itself is OK. I reopen the EC2 dismentling the K2, remove the shield, and redo the resistance check : Q1 Q2 collectors 18 k, bases 11.2 ohms J3 +lead 15 k J2, Q9 and D13 all OK too. I dismount the PC from the sink and do the resistance check again after visual check to see if anything has gone bad, Same results for ressistance, so what can I do? To resume, the fuse blow when I turn on the K2 (sure, with the amp in service) power dialed over 11 watts (whatever, it blow with 11.2 or 100 watts!). Another constatation is R21 going very hot, even starting to smoke! Help please... F5UL/Bob ___ 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: Elecraft Digest, Vol 36, Issue 29
Hi, all Elecrafters Quite a nice and agreable surprise this morning after learning the birth of K3!! I will just have to get one, but it will not be before the end of the year, so I will wait! Felicitation to all the Elecraft team, Wayne, Eric and all other Robert, F5UL ___ 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 no receive . . . where to start
Hi Mike Don,W3FPR just gave you very good tips to look at your problem. Another one may be the BFO frequency not in place in respect of the filter bandpass. Look in the technical part of the filter alignment and see if your BFO frequency follow (at some 10th of Hz) the values given in the book. If you are in CW (normal) and if the BFO is on the other side of the bandpass you will not hear anything !!! Good luck Mike in your hunting! 73 Bob, F5UL ___ 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 vs. the world.
Reading all the comments, it's difficult to resist and here is my contribution ! Since 1954 : 1 tube (6AQ5!) transmiter with BC312 Rx 807 CW/AM trans with same Rx Eico 720 CW Trx Home made SSB Trx with SP400 hammarlund Rx Heath HW-32 Vicking Ranger II Heath HW-101 Collins KWM-2 Drake TR-4 Drake TR-7 + L7 Yaesu FT-757 Kenwood TS-50 Kenwood TS-130 Icom IC-703 and finally Elecraft K2!!! It's not easy to tell which were the best, I think each one were what was best for me at the time!!! GL, 73/72 F5UL/Bob ___ 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] 2N4124/2N3904
Hello Rick I think that for HF use both transistors are equivalent Here are the main caracteristics : 2N4124 Max Dissip 310 mW BVCBO 30 V BVCEO 25 V BVEBO 5 V IC Max 200 mA hfe 120 Mhz 2N3904 Max Dissip 310 mW BVCBO 60 V BVCEO 40 V BVEBO 6 V IC Max 200 mA hfe 100 Mhz Data extracted from D.A.T.A. Inc Reference Standards for Industriy Hope this will help your choice ! Regards F5UL/Bob ___ 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] K2 4498
. snip .. We have had several people report that 2SC1969s obtained in EU did not work well. I don't know why. We use only Mitsubishi brand 2SC1969 transistors, obtained from RF Parts. . snip .. Well Gary I did not have any idea about this 2SC1969 european problem. It's curious because the one I triyed to use where also Mitsubishi brand but they where really not working. The drive was the same but the output was max 1.5 w on 80 m and less and less going up in frequency - So I endes up with 6 2sc1969 dead and not output till I received the package from Wayne place !!! Thank again Gary for your help. BCNU 72 F5UL/Bob ___ 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 Elecraft Net Report for April 24-25, 2005
Hi Kevin ! Just for information and if u want to QSP Tom, I heard him 549 on 7045.3 at 0200 z this morning. I called till 0227 z bnut to no results ??!! - I will try next time on 10107.2 and 14050 may be I may get throught !! Best 72 from Bob/F5UL By the way it's K2 4498 ! ___ 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 4498 PA
Hi all the list Thank's a lot to Gary, Jim, Toby, Luc, Don ... for your replies ! Up to now, I did statics tests resistances to ground and voltage, with power to minimum. So, here are the results : 12V = 11.37 (I'm using a very small PS (12 v/0.5 A) to minimise the curent problem) Input curent rx = 0.221 A Input curent tx = start at 0.470 A and go up to more than 1 A when the supply fold down to zero! 8A = 7.98 V rx, 7.98 tx 8R = 410 ohms to ground, 7.89 rx, 0.250 tx 8T = 300 ohms to ground, 0.002 rx, 7.89 tx Q5c = 650 ohms, 11.33 rx, 11.17 going down to zeo in tx Q5b = 110 ohms, 0 rx, 1.23 tx Q5e = 23 ohms,0 rx, 0.29 tx Q6c = 660 ohms, 11.33 rx, 11.15 going down in tx Q6b = 65 ohms, 0 rx, 1.09 tx Q6e = 1.5 ohms,0 rx, 0.38 tx Q7c = 680 ohmd, 11.32 rx, 11.27 going down in tx Q7b = 55 ohms, 0.005 rx, 0.643 tx Q7e = 0 ohm, 0 rx, 0 tx Q8c = 680 ohms, 11.32 rx, 11.27 going down in tx Q8b = 55 ohms, 0.005 rx, 0.643 tx Q8e = 0 ohm, 0 rx, 0 tx I stoped the test whenever the 12V reached 9.0 v in tx !!! Well, Gary told me that I had to watch 8R going down in tx at least 0 .3 volts. The 250 mV was not far from this limit so I pushed the point and changed the 2N3906. The only result where 7.91 in rx and 0.248 in tx so...??? I do not think this switch circuit is involved! Nothing else for now. I will try the signal tracing this afternoon and we will see what come out ! Once more thank you for your intervention and I will keep u informed of the results... F5UL/Bob ___ 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 4498
Hello the list, I posted,a few days ago an inquiry about a PA problem with my K2 Till now no return! But I have a lot of changes since this post. The two PA Xstors finished with junction B/E open. After changing both of them with two new ones, the same reactions happend, that is very low output on 1.8, 3.5, 7.0, nothing on 10.1 and up. Whenever I try to key the Tx during some seconds, with power set at 2 watts, the curent start at 0.7 Amp for a few seconds, then go up to limit with High Cur indication. The power out goe down during this time ! I still had another pair of 2SC1969 to change, but the resultswhere the same...!!! So I am lost. This K2 was working nicely and that incident happen suddunly just after turn on in the morning with a brutal howlin the speaker, and after turn of followed by turn on the apparition of this no fonctioning ! Who can help me pse? F5UL/Bob ___ 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 #4498 - Big problem
Hello the list, Sorry for the misunderstanding and the pass band used without necessities ! It was not about the bouncing back but the msg concerned my K2 Up to this morning, this K2 was a nice and good worker, with during the last six month about a thousand QSO under his belt ! But this morning turning it on, I just got a vigorous howl ( very low freq nois !). I turn it off, and on after a few second. The Rx start normaly and the noise start again after a few second. Re-turn off and tunr on and no howl and Rx is working correctly! The set was in CW mode so I turn down power (to abt 2/3 watts) and close the key... The result is correct on 1.8, 3.5, 7.0 but nil on the rest of the bands. Closing the key a little longer on 7.0 the rig goes to curent overange in abt 10/12 second and power fall down to zero. So power off, open the rig, remove the bottom cover and before removing the heat sink just check the resistance of driver and PA. On Q6 (driver) E to Gnd 1.3 ohm, B to Gnd 76/80 ohms, and C to Gnd 500 ohms. On Pa C to Gnd 600 ohms, B to Gnd 120/130 ohm E to Gnd 0 (it's normal!). They seems to be normals but any time I close the key I get High Cur after 5/6 seconds and power out ZERO !! I do not know what to do, so I will wait till tomorow and hope to get some indications from the list ! Thanks in advance guy, BCNU 72 Bob/F5UL ___ 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] Spam bounce?
May be out of order on this reflector, but yesterday I had a mssage to post concerning a big trouble with my K2 SN 4498 and the following was all what I got in return...!!! So what can I do to post an e-mail from Europe? Thank you very much for the pass band ! F5UL -- Reporting-MTA: dns; wanadoo.fr X-SMTP-Server-Queue-ID: 8B4D31C00152 X-SMTP-Server-Sender: rfc822; [EMAIL PROTECTED] Arrival-Date: Fri, 8 Apr 2005 22:47:17 +0200 (CEST) Final-Recipient: rfc822; elecraft@mailman.qth.net Action: failed Status: 5.0.0 Diagnostic-Code: X-SMTP-Server; host - Hello the list, Up to this morning, this K2 was a nice and good worker, with during the last six month about a thousand QSO under his belt ! But this morning turning it on, I just got a vigorous howl ( very low freq nois !). I turn it off, and on after a few second. The Rx start normaly and the noise start again after a few second. Re-turn off and tunr on and no howl and Rx is working correctly! The set was in CW mode so I turn down power (to abt 2/3 watts) and close the key... The result is correct on 1.8, 3.5, 7.0 but nil on the rest of the bands. Closing the key a little longer on 7.0 the rig goes to curent overange in abt 10/12 second and power fall down to zero. So power off, open the rig, remove the bottom cover and before removing the heat sink just check the resistance of driver and PAOn Q6 (driver) E to Gnd 1.3 ohm, B to Gnd 76/80 ohms, and C to Gnd 500 ohms. On Pa C to Gnd 600 ohms, B to Gnd 120/130 ohm E to Gnd 0 (it's normal!)They seems to be normals but any time I close the key I get High Cur and power out ZERO !! I do n,ot know what to do so I will wait till tomorow and hope to get some indications from the list ! Thanks in advance guy, BCNU 72 Bob/F5UL ___ 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 # 4498 - Electrostatic protection
I'm in a very stormy country (Northern Alps) and we have at least once per month a thunderstorm that already cost me one pair of power Xstors (in my TS-130 - $380!!!) so even with $5 each TO220 part, I did not want to loose them, or at least reduce the chance to loose them. So I instaled on the KAT2 control board an RF Chock (1 mH) and an NE2 neon bulb wired between K18-pin 3/8 and ground just to establish a direct lway to ground for static electricity (via the chock) and in case of a virulent one turn on the NE2 and establish a full short to ground. Up to now I did not constat any loss of performance, either in transmission or reception and not changes in the KAT2 function. So... 73 to all and also a very heavy thank to all on the list, even if I do not use the information, it is a nice place to wander (hi!) F5UL/Robert ___ 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 : resistance vs impedence
Hello Ken, in your exemple despite the SWR staying the same the curent is not the same : at r=6+j16 the curent will much ùuch higher than with r=48+j146 ! Result : you will have more loss with the hight curent and the result will be less field intensity in the fist situation than in the second ! F5UL/Bob ___ 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] Xmas and New Year
Hello All : A merry Xmas and a very Happy New Year for all people participating actively in this forum. I just hope to see 2005 as good and happy than 2004 ! F5UL /Robert Drogoul K2 # 4498 ___ 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 (#4498) and KSB2 performance
The KSB2 option was installed last saturday and tested during all this time. It was working OK by the book (!) and the only objection was the gain that was too just, very limit, the max output in SSB (upper or mower SB) was only 6 to 8 watts pep (as seen on the scope inh two tone test). I found on the web the paper from John KI6WX (July 18, 2002)relative to diverses modifications and improving the KSB2 performances. I did not do the filter bandwith modif (as I was very happy with what I got !)but I did the increased gain and reduced intermod modif. it was finished this morning and the results are as John said in his paper. Around 5/6 db increased output and also as a bonus an intermod distortion lower than I got before !I still did not make the ALC time constant change. I will may be do that when I used the K2 for PSK transmit. Thank to John, wayne Eric and the gang for their help ! 73 F5UL/Robert ___ 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 results
I'm so strongly glad with the K 2 results during the CQWWCW Contest that I can not resit the pleasure to let the list know what I did, continents by continents ! I run QRP CW Mono Band and only Oceania was absent of the setup ! Why ??? Continent Statistics F5UL CQ WORLD WIDE DX CONTESTSingle Operator 29 Nov 2004 1544z 160 80 40 20 15 10 ALL percent CW North AmericaCW0 0 320 00 3212.4 South America CW0 06 0 006 2.3 Europe CW0 0 197 0 00 19776.4 Asia CW0 0 160 00 16 6.2 AfricaCW0 0 70 007 2.7 OceaniaCW0 0 00 000 0.0 Well anyway it was a real pleasure ! F5UL/Bob ___ 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 / F5UL
K2 # 4498 running perfect and in the CQWWCW Contest F5UL ___ 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 - No problems !
Hello the list ! Thank you a lot for all interventions and all where at least on a point justified ! The problem was two bad solders one on D4 - K and the second on the base of Q7 ; I can not explain but the Xtor was destroyed (collector/base junction in short) and I just had another pair of 2sc1969 so now it's running super (one ZL station on 10 mhz yesterday morning and w8cw yesterday evening on 7 !!!) I will keep in touch with the list for the progress ! Super kit this K2, and the next will be the SSB option in order to run PSK mode !!! maybe also the ATU 73 to all F5UL/Robert ___ 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 super kit, but new problem !
Hello the list ! I just finished K2 #4498. it was running all test in good condx and Rx and Tx where in the specs. I let it in stand by this morning on 7 Mhz and sudenly I read HiCur on and off. I put down the power level and I still got HiCur any time I close the keyer or put it in Tune. Power level = 0 in display I = 2.45 A. with curent limit set @ 2.5 A, whenever I key it in tune or with the keyer. First suspects the two 2SC1969. removed and changed for 2 others. No change ! And I forget the principal : reception is gone !!! So please help !!! I will accept any informations ! F5UL/Robert ___ 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
