[Elecraft] Z match versus KAT100
I'd appreciate thoughts about what I *think* I hear! I normally use K2/100, KAT100, BL1 (4:1 balun), open wire feeder and 84' dipole - works fine. 80m is noisy but I get a good match on all bands. I recently connected a Z-match tuner (old KW Easi Match - like the Johnson Matchbox) to the output of the KPA100 (bypassing the tuner and balun) and fed the same open wire feeder and antenna. The contrast between QSOs and the noise on 80 increased (copy much easier). S meter peaks the same and match is as good. Am I imagining this, or is there a reason? Thanks. David G4CWB ___ 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] Power supply for K1
Does anyone on the list have any suggestions for a compact power supply for the K1? Thanks for any input. 73 Tim/K2TF __ Discover Yahoo! Have fun online with music videos, cool games, IM and more. Check it out! http://discover.yahoo.com/online.html ___ 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] Z match versus KAT100
David, There is a good chance that you are not imagining things. Your tuner is likely a link coupled design which isolates the transceiver side from any circulating currents on the antenna side. A balun does not provide the same isolation. Antenna currents can be induced from BC stations, wind static, rain static, etc. as well as the desired signals. 73, Don W3FPR > -Original Message- > > I'd appreciate thoughts about what I *think* I hear! I normally > use K2/100, > KAT100, BL1 (4:1 balun), open wire feeder and 84' dipole - works fine. 80m > is noisy but I get a good match on all bands. I recently > connected a Z-match > tuner (old KW Easi Match - like the Johnson Matchbox) to the output of the > KPA100 (bypassing the tuner and balun) and fed the same open wire > feeder and > antenna. The contrast between QSOs and the noise on 80 increased > (copy much > easier). S meter peaks the same and match is as good. > > Am I imagining this, or is there a reason? Thanks. > > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.4.0 - Release Date: 6/1/2005 ___ 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] Z match versus KAT100
David, >From what you say I get the feeling that the BL1 is not providing the antenna plus open wire feeder with a true balanced load, with the result that the feeder is also acting as an antenna, picking up noise from 'local' sources which is not cancelled out. Although the KAT100 could provide the KPA100 with a 50 ohm load, the feeder imbalance remains. A good rule states that baluns of the BL1 type, current baluns, should not be used with reactive loads where the load VSWR exceeds 3:1 worst case, not only for imbalance reasons but also for reasons of stress under power. These are related. This rule is strictly observed in very high power SW Broadcast antenna system design, more often 2:1 worst case from what I have heard from the 'Horse's mouth'. I suspect that when you connect the KW Easi Match, which I believe is a proper balanced tuner, the feeder would be presented with a balanced load. All other things being right (e.g. routing of feeder), the local noise picked up by the feeder should be cancelled out. The antenna itself would be affected to some degree as far as noise contribution is concerned, but I would think that the feeder would be the major contributor. No doubt the same situation exists on other bands, not just 80m, but that the external noise strength there is less and not noticeable. 73, Geoff GM4ESD - Original Message - From: "David Andrews" <[EMAIL PROTECTED]> To: Sent: Wednesday, June 01, 2005 9:29 AM Subject: [Elecraft] Z match versus KAT100 > I'd appreciate thoughts about what I *think* I hear! I normally use K2/100, > KAT100, BL1 (4:1 balun), open wire feeder and 84' dipole - works fine. 80m > is noisy but I get a good match on all bands. I recently connected a Z-match > tuner (old KW Easi Match - like the Johnson Matchbox) to the output of the > KPA100 (bypassing the tuner and balun) and fed the same open wire feeder and > antenna. The contrast between QSOs and the noise on 80 increased (copy much > easier). S meter peaks the same and match is as good. > > Am I imagining this, or is there a reason? Thanks. > > David G4CWB > ___ 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] Yet "Another KX1 lives" report - will the fun never end?
I am really impressed with this little rig. I made the usual errors but fixed them straight away. I also took two items of advice from the list: 1) the Pelican 1060 case and 2) a small tripod to support the rig. These are both well worth considering. I admit I was skeptical about threading a 1/4-20 hole in the case but there is enough thickness there to support the thread and the tripod makes a nice display stand too (for the thousands of visitors who see my shack). I see this as a hotel/traveling rig since I am a road warrior these days and travel internationally. It looks like time to unload the Sierra and the 817. Cheers, Grover K7TP ___ 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 Alignment Problems
Hi all: I am performing the alignment step that involves peaking the voltage at TP5 by adjusting L12, L13 ... L17. I find that the voltage starts to decline a few seconds after I first key my K2. After I allow a few seconds of "cool down", the voltage recovers, but this behavior makes it almost impossible to tell if I have peaked the inductors properly. I also have found that I cannot get more than 15 watts output from the XV50 when driven by 5 watts from the K2. Any suggestions for how to proceed would be greatly appreciated. 73 de Brian W3BW ___ 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 #4948 snag
On page 26 right coluum last instruction reads "Place two 3/4" (19mm) spacers over the leads of each back light LED as shown in Figure 5-9" - Now to the best of my knowledge NO SPACERS such as those described fig 5-9 were in the parts list. Unless it is the two 8mm x 8mm square black pads. and these need two be split in half and stacked to get the required 1/8 spacing on the diffuser. Thanks for any help... de "rc" kc5wa -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.4.0 - Release Date: 6/1/2005 ___ 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] K2 #4948 snag
"RC" KC5WA wrote on 06/01/05 09:50 ET: > On page 26 right coluum last instruction reads > "Place two 3/4" (19mm) spacers over the leads > of each back light LED as shown in Figure 5-9" > - > Now to the best of my knowledge NO SPACERS > such as those described fig 5-9 were in the parts list. > Unless it is the two 8mm x 8mm square black pads. > and these need two be split in half and stacked to get > the required 1/8 spacing on the diffuser. Thanks for > any help... RC, The spacers are the little pieces you previously will have snapped off of the switch spacing tool. 73, Mike AB3AP ___ 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] WAS: K1 Problem with Power Out on 30/40m
Hello all, my problem(s) are solved. Due to circumstances I don't know two things at once happened and made it hard to find the problem: - first I had a cold solder joint on the filter board in the 30/40 section of the premix bandpass filter which was hard to find and then - second I have a bad trimmer capacitor which may need to be replaced in the 15/20 section of the same bandpass. Bad luck. 73 Gerhard ___ Gesendet von Yahoo! Mail - Jetzt mit 1GB Speicher kostenlos - Hier anmelden: http://mail.yahoo.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
[Elecraft] re snag
Aaah Duh, Bingo! thanks Don and Mike: I guess that never sank in correctly. Now i don't get to gripe about having to manufacture spacers. [g] Thanks again for the point in the correct direction. de "rc" kc5wa -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.4.0 - Release Date: 6/1/2005 ___ 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] Order soon for Field Day needs
Just a reminder for those of you planning to get a K1, K2, KX1 or accessories for use on Field Day this year. Get you orders in soon as we always get a rush in orders and can temporarily run out of some products as Field Day approaches. We're in good shape right now (only T1-As are about a week out), so order soon, and order often! ;-) 73, Eric WA6HHQ (Yes, I have a commercial relationship with this vendor...) -- _..._ ___ 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] High-tech sound enhancement for K2
Dear People, I've much enjoyed building and using my K2 etc. As big a delight is this mailing list, with its tremendous expertise and good humour. It's time I gave something back, so here's my one dollar's worth. It might seem mad, but it works. My hearing of upper frequencies is not too good and the K2's upward (and slightly back) facing speaker doesn't help. It's surprising how the upper frequencies are needed for intelligibility in difficult conditions. Yes, I could use an external speaker, but ... in English WC cisterns there is a ballcock assembly, part of which is a hollow spherical float about 12cm in diameter. I bought mine made of plastic from a hardware store for $1. Cut it in half, then in half again. The quarter that remains is kind of parabolic in shape, and when placed over the speaker beams the sound out forwards. And ... you've got three quarters left for the next three K2's you build! Now my American brethren are going to say their lavatories/toilets use an entirely different system, in which case I can send as many ballcock floats over as I'm asked for! David G4CWB ___ 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] High-tech sound enhancement for K2
David Andrews wrote: Now my American brethren are going to say their lavatories/toilets use an entirely different system, in which case I can send as many ballcock floats over as I'm asked for! No, we have them too. The problem will be in finding a nice metal one as opposed to plastic! -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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] T1 ATU CUSTOMER NOTICE: Removing protective film from the label
The label supplied with the T1 ATU has a very thin protective film layer that should be removed after the label is installed. If the film is left on, the label will have a dull appearance, may have small bubbles trapped beneath it, and will be susceptible to scratching. The underlying label has a much nicer appearance and is highly scratch-resistant. IF YOU HAVE THE KIT VERSION: The label supplied with the kit version of the T1 has the protective film in place. You must removed it as described below. IF YOU HAVE THE FACTORY-ASSEMBLED VERSION: Factory-assembled T1s are now being shipped with the film removed. However, the first 50 or so assembled T1s shipped still had the film. If you ordered an assembled T1, examine the label carefully to see if the film is present. The film is actually there if you can take your fingernail and gently leave a scratch on the surface. REMOVING THE FILM: You can use a fingernail or a fine-tipped tool such as a small jeweler's screwdriver or plastic tuning tool. Don't use a knife or razor blade, since you might nick the label itself. Place your fingernail or the tip of the tool on the surface of the label at one corner, then rub gently until the film starts to peel off. You can then use tweezers or long-nose pliers to pull the film back far enough to grasp with your fingers. Pull with a steady pressure to remove it. 73, Wayne N6KR --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] T1 Tuner
I just finished building and installing the T1 tuner I picked up at the Hamvention. It was a lot of fun to build and works beautifully. I have it connected through an Elecraft 1:1 balun to a center-fed doublet about 60 feet long. It tuned everything from 10 to 80 meters with no problem. I hooked up a remote switch for it so I can locate the tuner next to where the feedline enters the shack and activate it from my operating position a few feet away. Works great. Parker WD8JOL K2 #2636 ___ 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] Those pesky 14 crystals
Hi all, This has got to be a stupid question, but hey, it happens sometimes. Part of the reason is that I haven't had to open up the case of my K2 in 6 years and now I sort of forgot how the thing works. Anyway, I am faithfully upgrading my K2 #402, and have gotten to the part where it is suggested to shorten the ground leads to the 5 crystals in the cohn filter. I figure this is a good time to replace the crystals since I bought the 14 crystal replacement pack. However, I counted nine 4.091 mHz crystals in the K2 and 7 crystals on the ssb board. This makes 16 crystals if my math is correct. I assume x7 thru x11 are replaced, but don't know which two of the x3 thru x6 are replaced on the main board. I also assume all 7 of the crystals on the ssb board are replaced. I fiqured this must all be explained somewhere, but haven't found it yet. Advice is appreciated. Thanks, Steve, W2MY ___ 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 # 4864 Mission Complete!
Gang: Got my K2 finished, including all the options I bought for it at the time. About the only other option I will pick up in the near future is the 60M option. Aside from an "operator headspace" issue regarding how I wound transformer T1 on the KAT2 board and how Elecraft WANTED me to wind ithmmall went very well indeed. Once I rewound T1 and reinstalled it (actually it was SOo obvious when you look at the way the manual says to wind and install T1, it is rediculous to do it wrong), the KAT2 came up and aligned fine. The DSP option is unbelievable. Larry Wolfgang, WR1B, was right...if you are in the DSP mode and there is no signal present in the passband, you have to look to see if the antenna is still connected! Man, that receiver gets quiet!!! The one thing I forgot to do is pin out the pin out the mic connector, but that is not a biggie since I don't have a good hand mic at this present time to uses with it anyway. Something for me to do inthe future. Eric & Wayne: thanks for a great rig!! vy 73 Rich K7SZ ___ 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] Those pesky 14 crystals
Hi Jim, Are you sure about replacing X3 & X4 in a BFO mod kit? The BFO temp stability kit does not include replacing the crystals. Perhaps I missed one of the modes but I thought I ordered them all. Or perhaps you needed a special upgrade because your SN is low. Wondering in Texas, Steve k4zm wrote: Steve; You replace all seven on the KSB2 and X5-X11 on the K2 RF Board. X3&X4 are special BFO Crystals and are replaced in the BFO upgrade kit. 73 Jim Younce K4ZM K2 SN: 18 . ___ 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] Testing the compressor on K2 #4913
Is the design of the K2's compressor so that even at 4:1, it's not too harsh? I've been using 2:1 for normal ops and 4:1 for difficult contacts. My mic is an old CB "Cobra" hand mic (600 ohm). I also have a headset mic salvaged from a cell phone (2.2k). I don't use that one much. I talked to KB0OMQ (2 miles away) on 40m today and had him rate the compressor for quality at 1:1 and 4:1. He said there was no difference in quality - just in strength. That was on the CB mic. That had me scratching my head. Surely, 4:1 compression would sound terrible so close in? I'm used to my FT-857D where at 65 of 100 it sounded good but at 100 it was only good for busting pileups. I would get complaints of my audio if I forgot to turn it down for a ragchew. I'm pretty sure my compressor is working - I get much more power for a given sound with it set to 4:1. Is the K2's compressor just THAT clean? Ken -- Just my 2¢ worth... 73's es gd dx de Ken KGØWX Grid EM17ip, Flying Pigs #-1055, Digital On Six #350, Proud builder & owner of Elecraft K2 #4913 -- Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.4.0 - Release Date: 6/1/2005 ___ 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] PLL Reference Oscillator out of spec
I have completed Allignment and Test, Part II I need help with the PLL Reference Oscillator Range Test: Ref High Freq 12098.1 Ref Low Freq 12092.56 Range (kHz) 6.35 Which is out of spec. The Rev E and Rev F books say minimum of 9.8 khz I am using a single XTAL at X1/X2 (ECS V 12.09-S KOREA G0) I am using a shielded 10mh at L31) Rev B boards. Rev E manual The rig works on receive on 40 meters FB I dont have the K2 Temperature-Compensated PLL Reference Upgrade. How much does that Upgrade cost? Mike KL7R Was Ser #1938 (unbuilt - then upgraded to rev b boards) Now Ser #3373 "Courage is being scared to death - but saddling up anyway." - John Wayne. __ Yahoo! Mail Stay connected, organized, and protected. Take the tour: http://tour.mail.yahoo.com/mailtour.html ___ 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 #4948
progress update on K2 #4948 Front Panel Completed Next up RF Board "rc" kc5wa -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.322 / Virus Database: 267.4.0 - Release Date: 6/1/2005 ___ 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] CQ WW contest last weekend
I was at a cabin at Deep Creek Lake in Western Maryland over the past weekend; no way to get on the Internet until today. I ran my KX1, at first on internal batteries, then from my car battery. Antenna was a 42-foot wire thrown up in a pine tree, with a 16-foot counterpoise. Included in 35 contacts were six contacts at one watt with stations in the US, Canada, Portugal, and Germany. When the batteries started to fade (they had about five hours on them prior to the weekend session), I plugged into the car's battery, and, at approximately 3.8 watts, had 29 contacts with the following: Slovenia, Spain, Slovak Republic, Serbia & Montenegro, England, Italy, Cape Verde Africa, Croatia, Cyprus, France, Antigua/Barbuda, Canada, and the US. I've never had so much fun working QRP. I was amazed at the number of stations that came back to me. The only three stations that didn't were one in the Ukraine, one in Slovenia, and one in Italy. I'll have to figure it out for sure when I get home to Indy, but I believe that at least a dozen of the contacts were at over 1,000 miles per watt. Russ, N9IV KX1 #742 P.S. I listened for the net Sunday night, but didn't hear it on either frequency. ___ 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] T1 ATU CUSTOMER NOTICE: Removing protective film from the label
In a message dated 6/1/2005 11:05:49 AM US Mountain Standard Time, [EMAIL PROTECTED] writes: IF YOU HAVE THE KIT VERSION: The label supplied with the kit version of the T1 has the protective film in place. You must removed it as described below. Done! Didn't even know it was there. Dave W7AQK ___ 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 #4931
Hello to the Group: After debating for quite some time, and briefly owning a K2 built by someone else, I finally jumped in and ordered/built #4931. Only option ordered was the Dimple. Took advantage of the holiday weekend and some vacation time, and got it going in a little over two weeks. Build went fairly well; spent about 60 hours overall. Made a couple of major boo-boos, but was able to track them down and fix them. Thanks to Gary for some good, quick advice. Finished up touch-up alignments tonight. Performance so far as expected. 10-15 watts out, and receive sounds as good if not better than the Omni-VI and Corsair that also grace the shack. Looking forward to putting the K2 through its paces during FD. Hope to be 1B from TN. Then, will look at adding some other options to get ready for the next contest season. Thanks to Eric, Wayne and the rest of the Elecraft gang for an excellent product. This thing is both an electrical and mechanical marvel that cannot be fully appreciated until you put one together! 72/73 Luther N4UW ___ 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 4914 Status
Well 4914 is well under way! I have completed step 1 and all functions checked out 100%. I have completed the 3 paragraphs of resistors and now moving onto the resistor packs. Just about ready to start the construction of the new stabilizer circuit board. 72 Jim W7RY K2 #4914 ___ 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] PLL Reference Oscillator out of spec
Mike; That is way out of spec. Make sure you all of the components installed in the correct location. Double check that you go the varactor diodes in the right location; this circuit uses two different types. Also check the DC voltage on the varactor diodes to make sure it varies from 0 to 8 volts. If everything checks out okay, ask Gary to send you a new crystal and check that one out. -John KI6WX - Original Message - From: "Mike KL7R" <[EMAIL PROTECTED]> I have completed Allignment and Test, Part II I need help with the PLL Reference Oscillator Range Test: Ref High Freq 12098.1 Ref Low Freq 12092.56 Range (kHz) 6.35 Which is out of spec. The Rev E and Rev F books say minimum of 9.8 khz I am using a single XTAL at X1/X2 (ECS V 12.09-S KOREA G0) I am using a shielded 10mh at L31) Rev B boards. Rev E manual The rig works on receive on 40 meters FB I dont have the K2 Temperature-Compensated PLL Reference Upgrade. How much does that Upgrade cost? Mike KL7R Was Ser #1938 (unbuilt - then upgraded to rev b boards) Now Ser #3373 ___ 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] Testing the compressor on K2 #4913
Ken; The compressor uses a power detector to measure the power level and it then uses that to set the audio gain. This results in no distortion of the audio signal. It is possible to run digital modes such as PSK31 through the compressor without adding any significant distortion to them. It is also possible to increase the compression level up to 16:1 by changing a resistor value. I'm not sure I would recommend that because every background noise in your shack could be transmitted at full output power. -John KI6WX - Original Message - From: "Ken Bessler" <[EMAIL PROTECTED]> Is the design of the K2's compressor so that even at 4:1, it's not too harsh? I've been using 2:1 for normal ops and 4:1 for difficult contacts. My mic is an old CB "Cobra" hand mic (600 ohm). I also have a headset mic salvaged from a cell phone (2.2k). I don't use that one much. I talked to KB0OMQ (2 miles away) on 40m today and had him rate the compressor for quality at 1:1 and 4:1. He said there was no difference in quality - just in strength. That was on the CB mic. That had me scratching my head. Surely, 4:1 compression would sound terrible so close in? I'm used to my FT-857D where at 65 of 100 it sounded good but at 100 it was only good for busting pileups. I would get complaints of my audio if I forgot to turn it down for a ragchew. I'm pretty sure my compressor is working - I get much more power for a given sound with it set to 4:1. Is the K2's compressor just THAT clean? ___ 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
