Re: [Elecraft] K2 Speaker Replacement
Hi James, I would order one from Elecraft, it is the one you `must have', it has an output spl of 95 db which is very good efficiency, if you were to replace it with anything else you have to match that number or better or the audio out will be at a lower level for the same volume setting. 73 Kevin WA6FWF - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Tuesday, July 26, 2005 9:22 PM Subject: [Elecraft] K2 Speaker Replacement Well I did it. By accident at field day I overloaded the K2's speaker with too strong a signal and with the volume accidentally turned up and I think I blew it out. It sounds like crap now.. yet plugging in an external speaker sounds just fine. Should I contact Elecraft for a replacement or is there some speaker that is a 'must have' to replace the internal one? Thanks, James KB2FCV ___ 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 Speaker Replacement
Well I did it. By accident at field day I overloaded the K2's speaker with too strong a signal and with the volume accidentally turned up and I think I blew it out. It sounds like crap now.. yet plugging in an external speaker sounds just fine. Should I contact Elecraft for a replacement or is there some speaker that is a 'must have' to replace the internal one? Thanks, James KB2FCV ___ 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 with another radio
This one is very easy to accomplish. You just open the case to the Icom, remove everything inside, then install a K2 in the now empty case. Seriously, the KAT100 uses information provided directly by the K2 as communicated through the Elecraft K2 Auxbus. Thus the KAT100 will only work with the K2. But, The Elecraft T1 tuner should do the trick for you. Check it out at www.elecraft.com. On Jul 26, 2005, at 7:50 PM, Doug Shields wrote: Hello all, I know I have seen this information before but I can't find where it is located. I would like to use a KAT100 tuner with an Icom IC-735 transceiver. What do I have to do to accomplish this? Any help would be greatly appreciated. - Jack Brindle, W6FB - ___ 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] hex key
My Elecraft Hex Key (ser #0203) arrived today and what a beauty it is. I am looking forward to many hours of using it. Thanks Elecraft & Bencher RC kc5wa -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.5/58 - Release Date: 7/25/2005 ___ 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] KAT100 with another radio
Hello all, I know I have seen this information before but I can't find where it is located. I would like to use a KAT100 tuner with an Icom IC-735 transceiver. What do I have to do to accomplish this? Any help would be greatly appreciated. Doug W4DAS ___ 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] KRC2 F/W Upgrade - problems
> NOW MY KRC2 IS COMPLETELY DEAD. Upon power-on the LED comes up in DIM Problem solved. In a series of e-mails Jack helped me getting my KRC2 back to life. Again Elecraft proved to not only have the best rigs, they also have the best (and fastest) support! Thank You, guys! VY 73 de Marcus, DL1EKC ___ 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] Amateur Electronics History
I received an inquiry from a reporter on the east coast who is looking for information on the history of not just amateur radio, but amatuer electronics. He is sure that someone must have written a book or article on the history of amatuer electronics, but has been unable to find any information. If anyone knows of a resource you may email me directly and I will forward it on to him. Please email [EMAIL PROTECTED] Thanks for any help you can provide. Lisa Jones ___ 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] 15 meters high vco voltage
Roland, Bands from 14 mHz and up typically have plenty of excess range - you certainly have something wrong. If things seem to change on you, you can be certain you have a bad solder connection somewhare in the VCO area. Concentrate on C73 - that is the only capacitor added for 15 meters, and relay K13 which controls whether it is in or out of the circuit. While you are checking things, take a look at D23 through D26 - they should be MV209 type - that is the larger of the 2 varactor types and if you look down on the top of them they will look like a full semicircle - the 1SV149 type is the smaller body and looks like a flattened semicircle when viewed from the top. If the varactors are not correct, the fixed capacitors will not provide the proper tuning range. 73, Don W3FPR > -Original Message- > > I was doing the VCO voltage readings. I got one voltage out of > range and it won't tune down with L30. On 15 meters it reads > 8.49 at 25000. It goes out of range at 22.159. > I checked C71-C74 and D21-D26. Manual said to also check C70 > through C74. > Is there a C70? Thanks. > Roland in Stockton > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.5/58 - Release Date: 7/25/2005 ___ 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] 15 meters high vco voltage
I was doing the VCO voltage readings. I got one voltage out of range and it won't tune down with L30. On 15 meters it reads 8.49 at 25000. It goes out of range at 22.159. I checked C71-C74 and D21-D26. Manual said to also check C70 through C74. Is there a C70? Thanks. Roland in Stockton ___ 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] KRC2 F/W Upgrade - problems
Hi Elecrafters, just decided to upgrade my KRC2 firmware from V1.0 to V1.3. I installed the KRC2 Download Utility V1.1, connected my KRC2 to the PC, set the switch to download. Then I made the following: - Press button "Get F/W Rev." - KRC2 responds "V1.0" - selected the HEX file - press "Download KRC2", KRC2 LED starts flashing - program says "KRC2 failed to reply" (well, it did before ?) After trying this several times I decided to switch off Options/Ack Req'd and started again. Now no error message comes up, but ... NOW MY KRC2 IS COMPLETELY DEAD. Upon power-on the LED comes up in DIM mode, but nothing more happens. It doesn't set any outputs nor does it reply on button presses. Well, I think, my KRC2 lost its brain. I have a programmer available. So no difficult task to flash the MCU directly, but the HEX-file supplied seems to be a somehow modified INTEL HEX file. What do I have to do in order to put life back into the MCU ? Your help is very welcome. VY 73 de Marcus, DL1EKC ___ 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: reciever now tuning, speaker wrks FB!
Ok, it is all working now! I'm can't believe how I tried to be careful and still made so many mistakes. C73 was the problem. I should have known because I ran short of 820 caps and had an extra 470. Changed out C73 and everything came to life. 40,30,15 meters all tune now. Oh the sweet sweet sound of CW. And the SSB sounds good too. Here's the really funny one. Where did P5 on the rf board come from? And who put it there? I've been messing with the control board all this time! %!!*!!! hi hi Once I found the correct P5 it worked FB... the speaker that is. Gosh, I found other things too. D39 wasn't installed. X5 & X6 crystals not grounded. I'm sure there is other stuff. I need to do all the alignments and VCO checks again. I'll do both Phase II and Phase III. I've done it several times now so no sweat. Anyways, A very big THANK YOU to you Don Wilhelm W3FPR and the group. I'm very novice on this stuff but with you folks there, it's what made this rig work. Without the group, this would have been a waste of money. Now it's an awesome rig. I still got a couple of minor glitches but I'm going to see if the re alignments take care of it. (still flutters when I tune). Thanks again! I'll be back to let you all know how it goes. I'm starting a 7 day stretch at work for swing shift so won't have much radio time for a while. 73's de N5VWN/6 Roland in Stockton flying pig#1100 K2 #3090 - Original Message - From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]> To: "Roland" <[EMAIL PROTECTED]>; "elecraft" ; <[EMAIL PROTECTED]> Sent: Tuesday, July 26, 2005 2:34 AM Subject: RE: [Elecraft] 40 meter reciever not tuning > Roland, > > The speaker plugs into P5 on the RF Board - P5 on the Control Board is for > use with an external probe to the internal voltmeter in the K2 (only active > if the P3 jumper is set for EXT). > > If I misunderstood your intent and you were actually referring to P5 on the > RF Board, then your headphone jack likely will not work either. You should > have continuity between the junction of RF Board R35 and R36 and RF Board P5 > with the headphone plug removed. If you have continuity there AND the > headphone jack has audio, the speaker should work - unless you swapped > conductors at either the speaker plug or the external speaker jack. > > 73, > Don W3FPR > > > -Original Message- > > > > I can tell now that there is continuity from the speaker jack to > > the control > > board. I don't get continuity from P3 to P5 on the control board. The > > schematic makes it look like a clean shot. When I tried to trace > > it on the > > board point to point, I get lost. Seems like it's going through a lot of > > coponents. If it is a straight shot, perhaps there is a break in the path > > on the board. Could I rig a separate jumper wire to P5 from P3? > > Roland in Stockton > > #3090 > > - Original Message - > > From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]> > > To: "Roland" <[EMAIL PROTECTED]>; "elecraft" > > Sent: Monday, July 25, 2005 8:35 PM > > Subject: RE: [Elecraft] 40 meter reciever not tuning > > > > > > > Roland, > > > > > > I suggest you start by re-checking the VCO voltage readings as specified > > on > > > page 61 of the manual. At the time they were done, you ahould have had > > all > > > voltages within range. Ask yourself what has changed in the VCO area > > since > > > that time - the answer would normally be 'nothing'. You may > > want to tell > > us > > > what the VCO Voltage readings actually are. > > > > > > For your speaker problem, if you know the speaker and external jack are > > OK, > > > the only thing left is the contacts in the headphone jack. Make certain > > the > > > headphone jack is properly soldered at all pins - they are more > > difficult > > > than most to solder since the pins do not project through the board. It > > is > > > possible that you can have a bad headphone jack, but check the soldering > > > first. > > > > > > 73, > > > Don W3FPR > > > > > > > -Original Message- > > > > > > > > I was told to report back. Ok, I told you-all before that 40 > > > > meters wasn't tuning except on the display. Well I thought all > > > > the other bands were tuning. Looks like 30 meters isn't tuning > > > > around either. > > > > I was told by Don to check left on R30. I checked and while > > > > tuning noticed that the voltage DID NOT vary. > > > > I don't have a capacitor checker so I don't know about C71 other > > > > than replacing it. It has a little monolithic cap marked "820" > > > > on it. All I have around is a disk NPO "82" that I could swap it > > > > out with, is this ok? > > > > I put the rig on 7000 and the freq. probe to TP1 and then CAL > > > > FACTR. You said it should read 11915. It reads 11341. It DOES > > > > NOT change when moving the dial. > > > > On the speaker, No AC detected. I also jumpered it directly to > > > > the speaker just to check it out. Nothing. I jumpered the K2 > > > >
[Elecraft] K2 for sale or trade
The K2 is serial number 315 with version 2.01 firmware. It is in excellent condition and works great. It has the following options KAF2 - audio Filter KSB2 - ssb option K160RX - 160meter and rec ant KAT2 - internal antenna tuner KB2T - internal battery KNB2 - noise blanker All manuals $695 + shipping or would consider trades involving a Yaesu FT-857, IC-706MKIIG or TS-480HX Please email with any questions. Thanks Tim NZ8J ___ 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] 40 meter reciever not tuning
Roland, Are the other bands still the same as they used to be? The high voltage indicates that the PLL is attempting to reduce the capacity of the varactors - which means that there is too much capacity in the VFO circuit somewhere for those bands. Check the value of C73 - it should be marked '470'. The only thing that is common for 30m and 15m is C73 (also common for 40 meters if the K60XV option is installed). Go to the secondary menu and be certain the D19 parameter is set to OFF. You might check for solder splashes in the vicinity of Relay K13. 73, Don W3FPR > -Original Message- > > Wow, You know I've done that test 4 times now and this time it was really > different on 3 bands on 30,40,15 meters I get 8.4v. That is very > different > from before. They were always within range. > Before I did Phase III, my voltages were > 40m hi=1.7 / lo=3.2 > 30m hi=3.5 / lo=4.1 > 15m hi=2.6 / lo=5.3 now for all three of those bands only it's > hi-8.4 / lo=8.4 so what did I do to throw all that off? Just > phase III. > I don't get it. You know, I'm so close now I can taste it! I have to > break off for family for a while then I'm going to look in on that speaker > advice you gave me. It can only be so many things, right? Then > we'll nail > it down. > > Thanks, > Roland in Stockton > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005 ___ 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] 40 meter reciever not tuning
Roland, The speaker plugs into P5 on the RF Board - P5 on the Control Board is for use with an external probe to the internal voltmeter in the K2 (only active if the P3 jumper is set for EXT). If I misunderstood your intent and you were actually referring to P5 on the RF Board, then your headphone jack likely will not work either. You should have continuity between the junction of RF Board R35 and R36 and RF Board P5 with the headphone plug removed. If you have continuity there AND the headphone jack has audio, the speaker should work - unless you swapped conductors at either the speaker plug or the external speaker jack. 73, Don W3FPR > -Original Message- > > I can tell now that there is continuity from the speaker jack to > the control > board. I don't get continuity from P3 to P5 on the control board. The > schematic makes it look like a clean shot. When I tried to trace > it on the > board point to point, I get lost. Seems like it's going through a lot of > coponents. If it is a straight shot, perhaps there is a break in the path > on the board. Could I rig a separate jumper wire to P5 from P3? > Roland in Stockton > #3090 > - Original Message - > From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]> > To: "Roland" <[EMAIL PROTECTED]>; "elecraft" > Sent: Monday, July 25, 2005 8:35 PM > Subject: RE: [Elecraft] 40 meter reciever not tuning > > > > Roland, > > > > I suggest you start by re-checking the VCO voltage readings as specified > on > > page 61 of the manual. At the time they were done, you ahould have had > all > > voltages within range. Ask yourself what has changed in the VCO area > since > > that time - the answer would normally be 'nothing'. You may > want to tell > us > > what the VCO Voltage readings actually are. > > > > For your speaker problem, if you know the speaker and external jack are > OK, > > the only thing left is the contacts in the headphone jack. Make certain > the > > headphone jack is properly soldered at all pins - they are more > difficult > > than most to solder since the pins do not project through the board. It > is > > possible that you can have a bad headphone jack, but check the soldering > > first. > > > > 73, > > Don W3FPR > > > > > -Original Message- > > > > > > I was told to report back. Ok, I told you-all before that 40 > > > meters wasn't tuning except on the display. Well I thought all > > > the other bands were tuning. Looks like 30 meters isn't tuning > > > around either. > > > I was told by Don to check left on R30. I checked and while > > > tuning noticed that the voltage DID NOT vary. > > > I don't have a capacitor checker so I don't know about C71 other > > > than replacing it. It has a little monolithic cap marked "820" > > > on it. All I have around is a disk NPO "82" that I could swap it > > > out with, is this ok? > > > I put the rig on 7000 and the freq. probe to TP1 and then CAL > > > FACTR. You said it should read 11915. It reads 11341. It DOES > > > NOT change when moving the dial. > > > On the speaker, No AC detected. I also jumpered it directly to > > > the speaker just to check it out. Nothing. I jumpered the K2 > > > speaker to my small wonders lab SW+ QRP rig and it works FB. > > > Thanks, > > > de Roland in Stockton > > > #3090 N5VWN > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Anti-Virus. > > Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005 > > > > > > > ___ > 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 Anti-Virus. > Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005 > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005 ___ 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] 40 meter reciever not tuning
I can tell now that there is continuity from the speaker jack to the control board. I don't get continuity from P3 to P5 on the control board. The schematic makes it look like a clean shot. When I tried to trace it on the board point to point, I get lost. Seems like it's going through a lot of coponents. If it is a straight shot, perhaps there is a break in the path on the board. Could I rig a separate jumper wire to P5 from P3? Roland in Stockton #3090 - Original Message - From: "W3FPR - Don Wilhelm" <[EMAIL PROTECTED]> To: "Roland" <[EMAIL PROTECTED]>; "elecraft" Sent: Monday, July 25, 2005 8:35 PM Subject: RE: [Elecraft] 40 meter reciever not tuning > Roland, > > I suggest you start by re-checking the VCO voltage readings as specified on > page 61 of the manual. At the time they were done, you ahould have had all > voltages within range. Ask yourself what has changed in the VCO area since > that time - the answer would normally be 'nothing'. You may want to tell us > what the VCO Voltage readings actually are. > > For your speaker problem, if you know the speaker and external jack are OK, > the only thing left is the contacts in the headphone jack. Make certain the > headphone jack is properly soldered at all pins - they are more difficult > than most to solder since the pins do not project through the board. It is > possible that you can have a bad headphone jack, but check the soldering > first. > > 73, > Don W3FPR > > > -Original Message- > > > > I was told to report back. Ok, I told you-all before that 40 > > meters wasn't tuning except on the display. Well I thought all > > the other bands were tuning. Looks like 30 meters isn't tuning > > around either. > > I was told by Don to check left on R30. I checked and while > > tuning noticed that the voltage DID NOT vary. > > I don't have a capacitor checker so I don't know about C71 other > > than replacing it. It has a little monolithic cap marked "820" > > on it. All I have around is a disk NPO "82" that I could swap it > > out with, is this ok? > > I put the rig on 7000 and the freq. probe to TP1 and then CAL > > FACTR. You said it should read 11915. It reads 11341. It DOES > > NOT change when moving the dial. > > On the speaker, No AC detected. I also jumpered it directly to > > the speaker just to check it out. Nothing. I jumpered the K2 > > speaker to my small wonders lab SW+ QRP rig and it works FB. > > Thanks, > > de Roland in Stockton > > #3090 N5VWN > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.338 / Virus Database: 267.9.4/57 - Release Date: 7/22/2005 > > ___ 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
