[Elecraft] KPA100 D1-D8 voltages
I've completed construction of my KPA100 and am doing final voltage checks listed in the manual on p.46. My KPA100 as bought was a rev. C kit, but prior to construction I purchased parts to build it as a rev. D. Apparently I was not thorough enough in annotating my manual, as I was looking for the high voltage from the bias supply at the cathode of D13, but in the rev. D manual, the test point is changed to the junction of C77 and R11. Before realizing this, I had the heat sink removed and was testing voltage on D1-D8. Although the voltage at junction of C77 and R11 was within spec, many of the voltages at D1-D8 are significantly different from the tables in the manual. I don't know if I should be concerned about this or not since the final high voltage is within spec (now that I'm measuring at the right test point), as is the negative supply for the RS-232. Here's a list of my measurements at D1-D8. Spec Mine Diode Anode Cathode Anode Cathode D132130 21.1 138 D28432 89.0 20.9 D32184 18.1 88.7 D43621 38.2 17.1 D52436 15.9 38.2 D613.7 24 13.5 16.0 D7-22 -8.8-24.1 -1.1 D8-8.8 0 -1.1 0 Any insight would be appreciated. -Ben K1NT ___ 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] KPA100 D1-D8 voltages
Ben, THose voltages are not 'spec', but they are guidelines for troubleshooting. The oscillator activity will vary a lot from one unit to another, and a 10% variation either way from the values stated is usually OK - The important voltages are at the D1 cathode and the D7 anode. Two points - 1) there is a new Diode voltage chart in the current level errata sheet - download it and use that chart. 2) is the R4 value on your KPA100 board 100k? If not change it to 100k and that will drop your D1-D8 voltages down a bit if your current R4 value is 39k. 73, Don W3FPR > -Original Message- > I don't know if I should be concerned about this or > not since the final high voltage is within spec (now > that I'm measuring at the right test point), as is the > negative supply for the RS-232. Here's a list of my > measurements at D1-D8. > >Spec Mine > Diode Anode Cathode Anode Cathode > D132130 21.1 138 > D28432 89.0 20.9 > D32184 18.1 88.7 > D43621 38.2 17.1 > D52436 15.9 38.2 > D613.7 24 13.5 16.0 > D7-22 -8.8-24.1 -1.1 > D8-8.8 0 -1.1 0 > > Any insight would be appreciated. > > -Ben K1NT > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.8/621 - Release Date: 1/9/2007 1:37 PM ___ 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 noise
Hans, That effect can happen if your IF filter alignment is way off. I suggest aligning the filters using Spectrogram. See the information for doing that on the Builders Resouce section of the Elecraft website or look at the K2 Dial Calibration article on my website http://w3fpr.qrpradio.com . When you are finished aligning the filters, you can observe the AF content of an actual received signal with Spectrogram and determine if you still have a problem. 73, Don W3FPR > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Hans Johansson > Sent: Wednesday, January 10, 2007 4:34 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K2 noise > > > I have a problem with my K2. When I am listening to CW-signals > at my beatnote 700 Hz everything is OK. But when I tune to higher > or lower pitch it comes noise on the signal.It is more noticeable on > strong signals than on weak ones. I wonder if anyone have had this > problem and have any suggestions of solution or is it a shortcoming > of the K2 ? (Perhaps VCO noise). I have no transformer in the > neighborhood of the K2. > > 73 de Hans SM6BGA > ___ > 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: 7.5.432 / Virus Database: 268.16.8/621 - Release Date: > 1/9/2007 1:37 PM > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.8/621 - Release Date: 1/9/2007 1:37 PM ___ 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] 160m alignment
Gents, I'm having difficulty getting decent power output across the whole of the 160m band, I can tune up the bandpass filter to get 15 watts at any point on the band but the level drops very quickly as I tune either side of the peaked frequency.As an example If I peak up at 1900Khz I have under 2 watts output at the band edges and a corresponding loss of receive sensitivity.The performance on 80m is up to spec. so I am guessing that this excludes a problem with L3 or L4. Yes I've checked the component values & soldering to no avail so am looking to the list for inspiration. Thanks, Graham G4cpd ___ 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 D13 Cathode High Voltage
All, I performed the voltage checks at the KPA100 Test Points as stated on page 43 of the KPA100 manual (rev. C, Feb. 11, 2004). The D13 cathode should have a voltage between 90 and 150 volts; the measured voltage is 175 volts, which seems a little high. Also, the voltage measured at U4 pin is -30 volts, but the manual indicates the voltage range should be between -5 and -25 volts. Consulted the schematic and it appears as if the voltage from pin 8 of U4 supplies the High Voltage Bias Supply circuit. Mesaured the voltage at C44 as 45 volts, but schematic indicates it should be 30 volts. Is 175 volts too high a voltage at the D13 cathode? R4 is 39K. Any suggestions or help would be greatly appreciated! Michael KI5E _ Get live scores and news about your team: Add the Live.com Football Page www.live.com/?addtemplate=football&icid=T001MSN30A0701 ___ 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] KPA100 D13 Cathode High Voltage
Michael, change R4 to 100K. That change is necessary to keep from applying excessive voltage to some components in the KPA100. Your amplifier may work for indefinitely with the higher voltage (or not), but you are over-stressing some parts. Ron AC7AC -Original Message- All, I performed the voltage checks at the KPA100 Test Points as stated on page 43 of the KPA100 manual (rev. C, Feb. 11, 2004). The D13 cathode should have a voltage between 90 and 150 volts; the measured voltage is 175 volts, which seems a little high. Also, the voltage measured at U4 pin is -30 volts, but the manual indicates the voltage range should be between -5 and -25 volts. Consulted the schematic and it appears as if the voltage from pin 8 of U4 supplies the High Voltage Bias Supply circuit. Mesaured the voltage at C44 as 45 volts, but schematic indicates it should be 30 volts. Is 175 volts too high a voltage at the D13 cathode? R4 is 39K. Any suggestions or help would be greatly appreciated! Michael KI5E ___ 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 Frequency Stability and Invitation to DC Area K2 Owners
I've posted two series of frequency stability measurements for my K2 (SN 5689) that might be of interest to the group. The data can be seen at http://www.cliftonlaboratories.com/Updates.htm under the 11 January 2007 entry. I also wonder if there are any Washington DC area K2 owners that would be interested in seeing how their K2 measures in my basement lab. I'm in Fairfax County Virginia and would be interested in looking at receiver sensitivity and transmitted emissions, although we can measure other things as well. (Power measurements included, although accurately measuring RF output power is a non-trivial task.) If you are interested, contact me via E-mail. 73 de Jack K8ZOA www.cliftonlaboratories.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] KPA100 D13 Cathode High Voltage
Michael, Increase R4 to 100K and the voltages will drop. If you read the KPA100UPKT instructions carefully you will find the instruction to check R4 and change it to 100k if necessary in 'PART IV:Other Changes' 73, Don W3FPR > -Original Message- > > I performed the voltage checks at the KPA100 Test Points as > stated on page > 43 of the KPA100 manual (rev. C, Feb. 11, 2004). The D13 cathode should > have a voltage between 90 and 150 volts; the measured voltage is > 175 volts, > which seems a little high. Also, the voltage measured at U4 pin is -30 > volts, but the manual indicates the voltage range should be > between -5 and > -25 volts. > > Consulted the schematic and it appears as if the voltage from pin 8 of U4 > supplies the High Voltage Bias Supply circuit. Mesaured the > voltage at C44 > as 45 volts, but schematic indicates it should be 30 volts. > > Is 175 volts too high a voltage at the D13 cathode? R4 is 39K. > > Any suggestions or help would be greatly appreciated! > > Michael > KI5E > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.9/622 - Release Date: 1/10/2007 2:52 PM ___ 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] KDSP2 question
The digital filters are very effective and all-in-all the unit works great. The menu is, as most of you know, quite involved but functional. HOWEVER: The real time clock and calendar will not advance. I have checked and checked the soldering and for bridges and the like. I think U3 is toasted/defective. But how I tell? Dohn N8EWY ___ 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] Another newbie question, Control Board checks
So I just finished the control board, and went through the resistance checks. My measurements for U6 pins 29 and 30 both read infinite (or very, very large resistance, basically my VOM is in out of range). They're supposed to be 70-90k. I've been extremely careful with U6, always have my static wrist strap on, etc. All the other resistance checks are ok. I know there's not much connected to 29 and 30. I've also reversed my VOM leads, same difference. Should I worry about this one, or is that somewhat normal? Reading the backissues of the reflector I see others that have gotten values in range, so it makes me think something's bogus. Ideas? Where to start looking? Thanks for any ideas... -J ___ 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: Another newbie question, Control Board checks
Sorry, I should have noted, this is a K2, #5945. On 1/11/07, Jeff Kinzli <[EMAIL PROTECTED]> wrote: So I just finished the control board, and went through the resistance checks. My measurements for U6 pins 29 and 30 both read infinite (or very, very large resistance, basically my VOM is in out of range). They're supposed to be 70-90k. I've been extremely careful with U6, always have my static wrist strap on, etc. All the other resistance checks are ok. I know there's not much connected to 29 and 30. I've also reversed my VOM leads, same difference. Should I worry about this one, or is that somewhat normal? Reading the backissues of the reflector I see others that have gotten values in range, so it makes me think something's bogus. Ideas? Where to start looking? Thanks for any ideas... -J ___ 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] KDSP2 question
Whoops .. the calendar/clock advances when in that mode. It does not keep time/date after you leave the mode. It does not increment. Is it possible to just get the U3 IC re[laced if it is defective? Dohn N8EWY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dohn Sent: Thursday, January 11, 2007 5:48 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KDSP2 question The digital filters are very effective and all-in-all the unit works great. The menu is, as most of you know, quite involved but functional. HOWEVER: The real time clock and calendar will not advance. I have checked and checked the soldering and for bridges and the like. I think U3 is toasted/defective. But how I tell? Dohn N8EWY ___ 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: 7.1.410 / Virus Database: 268.16.9/622 - Release Date: 1/10/2007 ___ 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: Another newbie question, Control Board checks
Jeff, First thing to check is your DMM. If it is in Auto-range, it may produce 'strange' readings for you under some conditions - switch it to manual ranging and set the range for something above 100k, then try again. If you still have extremely high resistance at those pins, check the soldering at RP4 and the U6 pins. 73, Don W3FPR > -Original Message- > On 1/11/07, Jeff Kinzli <[EMAIL PROTECTED]> wrote: > > So I just finished the control board, and went through the > resistance checks. > > > > My measurements for U6 pins 29 and 30 both read infinite (or very, > > very large resistance, basically my VOM is in out of range). They're > > supposed to be 70-90k. > > > > I've been extremely careful with U6, always have my static wrist strap > > on, etc. All the other resistance checks are ok. I know there's not > > much connected to 29 and 30. I've also reversed my VOM leads, same > > difference. > > > > Should I worry about this one, or is that somewhat normal? Reading the > > backissues of the reflector I see others that have gotten values in > > range, so it makes me think something's bogus. > > > > Ideas? Where to start looking? > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.9/622 - Release Date: 1/10/2007 2:52 PM ___ 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] FS: Elecraft K2, Nicely Equipped; Exceptional Build
I have an Elecraft K2 that I would like to sell. It has one QSO of wear from EPA to South Cook on CW. It has all options except RS232 and DSP. Battery included. I will ship only to USA and to a callbook address. Paypal OK. $750 plus Insured shipping to your door. I hate to sell it and should this be a hassle or take too long, I won't. 73, Byron ___ 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] toroid's
i have a complaint, no toroids to wind in the xv 432 transverter. ron, kc0tdj ps. to wayne , your crew does an excellent job supporting the products the sell ___ 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] XV50 problem is worst ! Need help.
Hi to all, Last week, my transverter XV50 was unable to receive properly... Only a small voice in the background... no S unit... the guy normally give me 10 or 20 over S9... After a new alignment procedure, I was unable to peak R13 to the desired level. I was unable to get more than 0.043 V. So my conclusion was that Q3 is dead. I received a new Q3 transistor. Now it is installed. I did another alignement. Now with Q3, I can peak R13 very easy to the target of 250mV. Note that before and now, my TX is still perfect. So no trouble with TX. But even after Q3 changed it is worst. I do not receive anything at all... not even a small voice in the background. If I listen to the background noise with or without antenna, it is the same. On the receiver input aligment, my noise generator did not make any difference ON or OFF. So I really don't know where to start now. I don't have very much experience in finding trouble. If someone could coach me where to start, I will really appreciate... :-(( Thanks for your times. === Jean-François Ménard / VA2VYZ Elecraft K2 #4130 KX1 #999 FISTS #11896 SKCC #2245 Web: http://web.mac.com/jf.menard __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.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] XV50 problem is worst ! Need help.
Hi Jean, First of all, I have to admit that I am not an expert and would suggest you contact Gary of Elecraft. From what you describe, you are ok on tx. Then you should concentrate yourself on RX route. Check all the soldering points around U1and K2 areas first and then followed by later stages in the RX route e.g. ADEX-10H etc If you have a good attentuator such as AT1, input a weak weak 50Mhz signal (or noise generator) at the antenna port J1 via the RF attentuator. Use another 50mhz receiver with a RF probe to trace the signal along the RX path to see whether there is a break in the signal path. Remember, use an RF attentuator in front of the antenna port 73 Johnny VR2XMC From: Jean-Fran�ois M�nard <[EMAIL PROTECTED]> To: elecraft@mailman.qth.net Subject: [Elecraft] XV50 problem is worst ! Need help. Date: Thu, 11 Jan 2007 20:45:14 -0500 Hi to all, Last week, my transverter XV50 was unable to receive properly... Only a small voice in the background... no S unit... the guy normally give me 10 or 20 over S9... After a new alignment procedure, I was unable to peak R13 to the desired level. I was unable to get more than 0.043 V. So my conclusion was that Q3 is dead. I received a new Q3 transistor. Now it is installed. I did another alignement. Now with Q3, I can peak R13 very easy to the target of 250mV. Note that before and now, my TX is still perfect. So no trouble with TX. But even after Q3 changed it is worst. I do not receive anything at all... not even a small voice in the background. If I listen to the background noise with or without antenna, it is the same. On the receiver input aligment, my noise generator did not make any difference ON or OFF. So I really don't know where to start now. I don't have very much experience in finding trouble. If someone could coach me where to start, I will really appreciate... :-(( Thanks for your times. === Jean-Fran�ois M�nard / VA2VYZ Elecraft K2 #4130 KX1 #999 FISTS #11896 SKCC #2245 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 _ 与联机的朋友进行交流，请使用 Live Messenger; http://get.live.com/messenger/overview ___ 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 newbie question, Control Board checks
Thanks guys, it was an operator error :) -J On 1/11/07, Charles Pitts <[EMAIL PROTECTED]> wrote: Jeff, 1. Double check and make sure that no pins on CNTL-U6 are bent under or are outside of the socket. 2. Check to see if CNTL-RP4 is installed correctly and all pins soldered. 73, Charles N3EJS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jeff Kinzli Sent: Thursday, January 11, 2007 7:03 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Another newbie question, Control Board checks So I just finished the control board, and went through the resistance checks. My measurements for U6 pins 29 and 30 both read infinite (or very, very large resistance, basically my VOM is in out of range). They're supposed to be 70-90k. I've been extremely careful with U6, always have my static wrist strap on, etc. All the other resistance checks are ok. I know there's not much connected to 29 and 30. I've also reversed my VOM leads, same difference. Should I worry about this one, or is that somewhat normal? Reading the backissues of the reflector I see others that have gotten values in range, so it makes me think something's bogus. Ideas? Where to start looking? Thanks for any ideas... -J ___ 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] XV50 problem is worst ! Need help.
Could someone give me the voltage that should be read of each legs of Q3, U1 and Z1 on RX please ?!?!? Le 07-01-11 à 21:25, Siu Johnny a écrit : Hi Jean, First of all, I have to admit that I am not an expert and would suggest you contact Gary of Elecraft. From what you describe, you are ok on tx. Then you should concentrate yourself on RX route. Check all the soldering points around U1and K2 areas first and then followed by later stages in the RX route e.g. ADEX-10H etc If you have a good attentuator such as AT1, input a weak weak 50Mhz signal (or noise generator) at the antenna port J1 via the RF attentuator. Use another 50mhz receiver with a RF probe to trace the signal along the RX path to see whether there is a break in the signal path. Remember, use an RF attentuator in front of the antenna port 73 Johnny VR2XMC From: Jean-Fran鏾is M閚ard <[EMAIL PROTECTED]> To: elecraft@mailman.qth.net Subject: [Elecraft] XV50 problem is worst ! Need help. Date: Thu, 11 Jan 2007 20:45:14 -0500 Hi to all, Last week, my transverter XV50 was unable to receive properly... Only a small voice in the background... no S unit... the guy normally give me 10 or 20 over S9... After a new alignment procedure, I was unable to peak R13 to the desired level. I was unable to get more than 0.043 V. So my conclusion was that Q3 is dead. I received a new Q3 transistor. Now it is installed. I did another alignement. Now with Q3, I can peak R13 very easy to the target of 250mV. Note that before and now, my TX is still perfect. So no trouble with TX. But even after Q3 changed it is worst. I do not receive anything at all... not even a small voice in the background. If I listen to the background noise with or without antenna, it is the same. On the receiver input aligment, my noise generator did not make any difference ON or OFF. So I really don't know where to start now. I don't have very much experience in finding trouble. If someone could coach me where to start, I will really appreciate... :-(( Thanks for your times. === Jean-Fran鏾is M閚ard / VA2VYZ Elecraft K2 #4130 KX1 #999 FISTS #11896 SKCC #2245 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 _ 与联机的朋友进行交流，请使用 Live Messenger; http:// get.live.com/messenger/overview === Jean-François Ménard / VA2VYZ Elecraft K2 #4130 KX1 #999 FISTS #11896 SKCC #2245 Web: http://web.mac.com/jf.menard === Jean-François Ménard / VA2VYZ Elecraft K2 #4130 KX1 #999 FISTS #11896 SKCC #2245 Web: http://web.mac.com/jf.menard __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.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
[Elecraft] N2CQ QRP Contest Calendar: Jan 13 - Feb 14, 2007
~ N2CQ QRP CALENDAR Jan 13 - Feb 14, 2007 ~ 80 METER FOXHUNT - EACH Wenesday 0200z to 0329z (Tue 9 PM to 10:29 PM EST) Info: http://www.qrpfoxhunt.org/ ~ 40 METER FOXHUNT - Each Friday 0200z to 0329z (Thurs 9 PM to 10:29 PM EST) Info: http://www.qrpfoxhunt.org/ ~ 070 Club PSKFEST Contest ... QRP Category Jan 13, z to 2400z Rules: http://www.podxs.com/html/pskfest.html ~ Michigan QRP Club Contest (CW) ... QRP Contest! Jan 13, 1200z to Jan 14, 2359z Rules: http://www.qsl.net/miqrpclub/contest.html ~ North American QSO Party (CW) (100w max. QRP Entries Noted) Jan 13, 1800z to Jan 14, 0600z Rules: http://www.ncjweb.com/naqprules.php ~ NAQCC Straight Key/Bug Sprint *** QRP CONTEST! *** EST: Jan 17, 8:30 PM to 10:30 PM UTC: Jan 18, 0130z to 0330z Rules: http://www.arm-tek.net/~yoel/contests.html ~ LZ OPEN CONTEST (CW 80M/40M) ...QRP Category Jan 20, 0400z to 1200z Rules: http://www.linkove.com/lz-open-contest/ ~ North American QSO Party (SSB) (100w max. QRP Entries Noted) Jan 20, 1800z to Jan 21, 0600z Rules: http://www.ncjweb.com/naqprules.php ~ ARRL January VHF Sweepstakes ... Low Power Category Jan 20, 1900z to Jan 22, 0400z Rules: http://www.arrl.org/contests/calendar.html?year=2007 ~ Run For The Bacon (CW) *** QRP Contest *** EST: Jan 21, 9:00 PM to 11:00 PM UTC: Jan 22, 0200z to 0400z Rules: http://fpqrp.com ~ NAQCC 160M Straight Key/Bug Sprint *** QRP CONTEST *** EST: Jan 24, 8:30 PM to 10:30 PM UTC: Jan 25, 0130z to 0330z Rules: http://www.arm-tek.net/~yoel/contests.html ~ CQ WW 160-Meter DX Contest (CW) ... QRP Category Jan 27, z to Jan 28, 2359z Rules: http://www.cq-amateur-radio.com/awards.html ~ REF (French) CW Contest ... QRP Category Jan 27, 0600z to Jan 28, 1800z Rules: http://www.arrl.org/contests/months/jan.html ~ BARTG RTTY Sprint Contest Jan 27, 1200z to Jan 28, 1200z Rules: http://www.bartg.demon.co.uk/Contests/07_sprint_rules.htm ~ UBA DX Contest (Belgian) (SSB) ... QRP Category Jan 27, 1300z to Jan 28, 1300z Rules: http://www.uba.be/hf_contests/pdf/ubatest_dx.pdf ~ QRP BARBERSHOP QUARTET CONTEST (CW QRP)... QRP Contest! Jan 31, 9 PM to 11 PM EST Rules: http://www.io.com/~n5fc/barbershop_contest.htm ~ Vermont QSO Party (CW/Ph) Feb 3, z to Feb 4, 2400z Rules: http://www.qsl.net/w1bd/qso_party.htm ~ 10-10 Int. Winter Phone QSO Party ... QRP Category Feb 3, 0001z to Feb 4, 2359z Rules: http://www.ten-ten.org/rules.html ~ Minnesota QSO Party (All) ... QRP Category Feb 3, 1400z to 2359z Rules: http://www.w0aa.org/ ~ FYBO Winter QRP Field Day (CW/SSB) ... QRP Contest! Feb 3, 1400z to 2400z Rules: http://www.azscqrpions.org/ScQRPion_OPERATING_EVENTS.htm ~ AGCW Straight Key QSO Party (CW 80M) ... QRP Category Feb 3, 1600z to 1900z Rules: http://www.agcw.org/agcw-con/2006/Englisch/htp_e.htm ~ Delaware QSO Party (All) ... QRP Category Feb 3, 1700z to Feb 4, 0500z Feb 4, 1300z to Feb 5, 0100z Rules: http://www.fsarc.org ~ North American Sprint (SSB) ... QRP Category Feb 4, z to 0400z Rules: http://www.ncjweb.com/sprintrules.php ~ QRP ARCI Fireside Sprint (SSB) ...QRP Contest! Feb 4, 2000z to 2359z Rules: http://www.qrparci.org/ ~ Adventure Radio Spartan Sprint (CW) ... QRP Contest! EST: Feb 5, 9 PM to 11 PM (First Monday each month) UTC: Feb 6, 0200z to 0400z Rules: http://www.arsqrp.com/ ~ CQ WW RTTY WPX Contest ... Low Power Category Feb 10, z to Feb 11, 2400z Rules: http://www
Re: [Elecraft] XV50 problem is worst ! Need help.
Please refer to Appendix B- trouble shooting of the XV owners manual. 73 Johnny VR2XMC From: Jean-Fran�ois M�nard <[EMAIL PROTECTED]> To: elecraft@mailman.qth.net Subject: Re: [Elecraft] XV50 problem is worst ! Need help. Date: Thu, 11 Jan 2007 22:44:17 -0500 Could someone give me the voltage that should be read of each legs of Q3, U1 and Z1 on RX please ?!?!? Le 07-01-11 �� 21:25, Siu Johnny a 茅crit : Hi Jean, First of all, I have to admit that I am not an expert and would suggest you contact Gary of Elecraft. From what you describe, you are ok on tx. Then you should concentrate yourself on RX route. Check all the soldering points around U1and K2 areas first and then followed by later stages in the RX route e.g. ADEX-10H etc If you have a good attentuator such as AT1, input a weak weak 50Mhz signal (or noise generator) at the antenna port J1 via the RF attentuator. Use another 50mhz receiver with a RF probe to trace the signal along the RX path to see whether there is a break in the signal path. Remember, use an RF attentuator in front of the antenna port 73 Johnny VR2XMC _ 与联机的朋友进行交流，请使用 Live Messenger; http://get.live.com/messenger/overview ___ 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 #05386 has developed a problem
Hi, My K2, recently completed, has developed a 'howl' on the 14MHz band. I had finished the rig and got it tweaked and performing very well, even making a contact with K6STA on 20 meters (He gave me 579) I then constructed the KIO2 and got it working with my logging program (tlf). The KIO2 began to malfunction, so I took it out and re-did the wiring on the aux board. I replaced it and it seemed to be fine except for a brief glitch. Then I noticed that there was a 'howl' all across the 14MHz band, but not on any other band. I removed the KIO2 and set up the rig. The howl was still there, exactly as before. What could have happened? I noticed that touching the leads of R24 or R25 modified the noise, but that's about what I know. The noise covers the whole band as far as I tuned. Anybody got a suggestion for how I should start troubleshooting? Thanks -- David Dawson People of privilege will always risk their complete destruction rather than surrender any material part of their advantage. -- John Kenneth Galbraith ___ 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
