> On May 22, 2016, at 17:46, elecraft-requ...@mailman.qth.net wrote: > > Send Elecraft mailing list submissions to > elecraft@mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.qth.net/mailman/listinfo/elecraft > or, via email, send a message with subject or body 'help' to > elecraft-requ...@mailman.qth.net > > You can reach the person managing the list at > elecraft-ow...@mailman.qth.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elecraft digest..." > > > Today's Topics: > > 1. Re: Powering a k-pad from a K3S (j...@kk9a.com) > 2. Re: To new KX2 owners (KD6QZX) > 3. Re: [KX3] To new KX2 owners (Wayne Burdick) > 4. Re: K3S receive antenna (Don Wilhelm) > 5. K3 and KX3 questions for Wayne (N6MQL) > 6. Re: K3 and KX3 questions for Wayne (Ken G Kopp) > 7. K2 PA Failures and Remote Antenna Switch (Dauer, Edward) > 8. Re: K3 Equalizer comment (Richard Fjeld) > 9. Re: K2 PA Failures and Remote Antenna Switch (Josh Fiden) > 10. Elecraft Weekly SSB Net (John W Webster) > 11. For sale P3-SVGA-Monitor (George Rebong) > 12. SP-3 Speakers SOLD (Steve Ellington) > 13. Re: K3 and KX3 questions for Wayne (David Orman) > 14. Re: K3 and KX3 questions for Wayne (Nr4c) > 15. Re: K3 and KX3 questions for Wayne (Bob N3MNT) > 16. [KX2] To new KX2 owners (a...@juno.com) > 17. Re: K3 and KX3 questions for Wayne (Art Nienhouse) > 18. Re: K3 and KX3 questions for Wayne (Ken G Kopp) > 19. Re: K3 and KX3 questions for Wayne (Walter Underwood) > 20. Tuneup, Rescue, build your K2, K1, KX1, others (Alan D. Wilcox) > 21. sub files (Ed Hoeck) > 22. Elecraft CW Net Announcement (kev...@coho.net) > 23. Re: K3 and KX3 questions for Wayne (N6MQL) > 24. Re: K3 Equalizer comment (Fred Jensen) > 25. Re: K3 and KX3 questions for Wayne (Ron D'Eau Claire) > 26. Re: K3 and KX3 questions for Wayne (Kevin Stover) > 27. Re: K3 and KX3 questions for Wayne (Jim Brown) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 21 May 2016 22:15:44 -0400 > From: <j...@kk9a.com> > To: <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] Powering a k-pad from a K3S > Message-ID: <000001d1b3cf$d93311e0$8b9935a0$@com> > Content-Type: text/plain; charset="us-ascii" > > Yes you have to modify the K3S. Check the archives, this was answered last > month by Wayne. I reposted a portion of his answer below: > > John KK9A > > > You need to solder one end of an 1/8th-watt resistor to an SMD, and the > other > end to a via nearby. Or you could send it to us to do the work. > > Wayne > N6KR > > > > From:Bob Novas > Sat May 21 14:35:16 EDT 2016 > > Say, just for the sake of the argument, that I were to purchase a K-pad. If > I want to power it from the K3S over the cable connected to the plug on the > bottom of the K3S, do I have to modify the K3S to get power to the K-pad? > If so, how much do I have to take apart? Would it make any sense to > purchase any other stuff at this juncture because the K3S is going to be > apart, like the KDV3? Thanks, Bob - W3DK > > > > ------------------------------ > > Message: 2 > Date: Sat, 21 May 2016 19:42:29 -0700 (MST) > From: KD6QZX <kd6...@sbcglobal.net> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] To new KX2 owners > Message-ID: <a929c4ca-4278-4ee4-ade7-a018ca5df...@sbcglobal.net> > Content-Type: text/plain; charset=us-ascii > > Campbell hill is closed SOTA thanks for the cool little HF rig. Scott AK6Q > > > >> On May 21, 2016, at 10:07 PM, wayne burdick [via Elecraft] >> <ml-node+s365791n7617734...@n2.nabble.com> wrote: >> >> Hi all, >> >> If you were among those who scooped up (in record time) the KX2s we brought >> to Dayton: thanks for your enthusiastic response! (Wish we'd brought more :) >> >> I know many of you have already unboxes the radios and are putting them on >> the air. If you have early questions or comments, feel free to send them to >> me directly, and/or post here. There are many knowledgable KX2 field testers >> lurking on our lists, including some top-flight SOTA operators. >> >> Trivia question: what's the closest SOTA peak to Hara Arena? >> >> 73, >> Wayne >> N6KR >> >> ---- >> http://www.elecraft.com >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [hidden email] >> >> >> If you reply to this email, your message will be added to the discussion >> below: >> http://elecraft.365791.n2.nabble.com/To-new-KX2-owners-tp7617734.html >> To unsubscribe from Elecraft, click here. >> NAML > > > > > ----- > K3 #348 KX3 #2499 > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/To-new-KX2-owners-tp7617734p7617736.html > Sent from the Elecraft mailing list archive at Nabble.com. > > > ------------------------------ > > Message: 3 > Date: Sat, 21 May 2016 22:43:16 -0400 > From: Wayne Burdick <n...@elecraft.com> > To: "ya...@dupuie.com" <ya...@dupuie.com> > Cc: Elecraft Mailer <elecraft@mailman.qth.net>, "k...@yahoogroups.com" > <k...@yahoogroups.com> > Subject: Re: [Elecraft] [KX3] To new KX2 owners > Message-ID: <22d00880-886b-42fa-9562-07929eff9...@elecraft.com> > Content-Type: text/plain; charset=utf-8 > > > > ---- > http://www.elecraft.com > >> On May 21, 2016, at 10:28 PM, "Scott Dupuie ya...@dupuie.com [KX3]" >> <kx3-nore...@yahoogroups.com> wrote: >> >> W8O/SW-012 - Hamilton County HP >> >> >> Closest by one mile. Next is W8O/CT-001. >> >> Do I win a new KX2? >> >> Scott >> AK5SD > > No, sorry. I was hoping to sneak out to activate it ;) > > Wayne > > >> >>> On May 21, 2016, at 9:05 PM, Wayne Burdick n...@elecraft.com [KX3] >>> <kx3-nore...@yahoogroups.com> wrote: >>> >>> Hi all, >>> >>> If you were among those who scooped up (in record time) the KX2s we brought >>> to Dayton: thanks for your enthusiastic response! (Wish we'd brought more :) >>> >>> I know many of you have already unboxes the radios and are putting them on >>> the air. If you have early questions or comments, feel free to send them to >>> me directly, and/or post here. There are many knowledgable KX2 field >>> testers lurking on our lists, including some top-flight SOTA operators. >>> >>> Trivia question: what's the closest SOTA peak to Hara Arena? >>> >>> 73, >>> Wayne >>> N6KR >>> >>> ---- >>> http://www.elecraft.com >>> >> >> __._,_.___ >> Posted by: Scott Dupuie <sc...@dupuie.com> >> Reply via web post ? Reply to sender ? Reply to group >> ? Start a New Topic ? Messages in this topic (2) >> >> Upgrade your account with the latest Yahoo Mail app >> Get organized with the fast and easy-to-use Yahoo Mail app. Upgrade today! >> >> VISIT YOUR GROUP New Members 11 New Photos 1 >> ? Privacy ? Unsubscribe ? Terms of Use >> . >> >> >> __,_._,___ > > > ------------------------------ > > Message: 4 > Date: Sat, 21 May 2016 22:45:22 -0400 > From: Don Wilhelm <donw...@embarqmail.com> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3S receive antenna > Message-ID: <57411d42.7010...@embarqmail.com> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Leroy, > > The answer is "yes", but how to do it depends on your K3S physical > configuration. > > If you only have the main receiver (no subRX), you can transmit on ANT1 > or ANT2, and connect a receive only antenna to the ANT IN BNC connector > in the rear (set of 5 BNC jacks). > Select RX ANT. > > If you have the SubRX installed, things get a bit more complicated, and > it depends partly on how you have the subRX AUX input connected and > whether the subRX is set to share the antenna with the main or whether > it is set to use its AUX input. > > If the subRX AUX input TMP cable is connected to the TMP jack on the > KAT3, then the AUX input for the subRX will be from the non-transmit > antenna - in other words, if the main is set to transmit on ANT1, the > SubRX will listen to ANT2 (assuming the subRX is set to use its AUX input). > OTOH, if the AUX input for the SubRX is connected to the BNC AUX input, > then a receive antenna can be connected to the BNC AUX jack and the > subRX will listen to that RX antenna when the subRX is set to use its > AUX input. > > 73, > Don W3FPR > > > On 5/21/2016 5:17 PM, lmarion wrote: >> Can the K3S with antenna tuner installed receive on one antenna and transmit >> on another? >> >> > > > > ------------------------------ > > Message: 5 > Date: Sat, 21 May 2016 19:58:11 -0700 > From: N6MQL <n6...@arrl.net> > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <4aad7a8d-1ffd-4625-a8de-cae515b32...@arrl.net> > Content-Type: text/plain; charset=us-ascii > > Wayne, > > 2 things... First I mentioned to David S in the service department that the > K3 is no longer transmitting more than 94 watts out on 17 meters regardless > of the SWR/ impedance. David said that this was a known issue due to software > and that it was being worked on. However I haven't seen anything about this > issue so I'm wondering if this is true and if so has there been any updates > to fix it. > Secondly, I'm noticing that my KXPA100 can not produce more that 80 watts on > most bands and 60 on others when I don't supply it with as much as 15v DC on > a 30 amp supply. This after I did the KX3 / KPXA calibration procedure. Why > is it that a "mobile" amp that would normally be powered with 12v DC from a > car battery not be able to provide the power output that it is sold as (100 > watts)?. Has there been some kind of revisions to the first run boards that I > should be exchanging them with? > > Thank you for your answers 73 > > Mike > N6MQL > > ------------------------------ > > Message: 6 > Date: Sat, 21 May 2016 21:11:30 -0600 > From: Ken G Kopp <kengk...@gmail.com> > To: N6MQL <n6...@arrl.net>, elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: > <CAD4CdTP=T2KahAa6rq3_nqqDdu5rtGNV2bj9fex6DVwKtJg=c...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Mike, > > A normal "12V" battery in a vehicle is almost never at 12V. About 14.4 > when the engine is running, and about 13.8 after when not under charge. A > battery measuring "12V" is suspect. > > Read the specified input voltage AT THE POWER INPUT connector ... I'll > wager it's lower than what's called for in the manual. > > > ------------------------------ > > Message: 7 > Date: Sun, 22 May 2016 04:05:40 +0000 > From: "Dauer, Edward" <eda...@law.du.edu> > To: "elecraft@mailman.qth.net" <elecraft@mailman.qth.net>, > "j...@voodoolab.com" <j...@voodoolab.com> > Subject: [Elecraft] K2 PA Failures and Remote Antenna Switch > Message-ID: <a747746e-90c4-4974-b7ac-b70c37d1e...@law.du.edu> > Content-Type: text/plain; charset="utf-8" > > > Josh ? > > Thanks for looking further into it. I looked pretty carefully before the > RCS-4 went into the trash - no electrolytics in the relay box that I could > see. Maybe a manufacturing defect rather than a design defect? But it?s > in a landfill somewhere now so I can?t confirm that. In my profession a > skeptic might call that spoliation of the evidence. But the traces on the > ?scope as I switched through the selector with no transmitter attached > were unmistakable - very large very fast transient spikes. Not a good > thing, whatever the cause. > > I wonder if the diodes that are in the RCS-4 system are actually being > used as flyback or suppressor diodes. The RCS-4 power supply is low > voltage AC, not DC. The diodes in the control box separate the positive > half cycle from the negative half cycle; as I read it the diodes that are > in the relay box select for each relay the half cycle they like, telling > the relays to do what the control switch says it asked them to do given > that there is but one relay voltage conductor - the center lead of the RF > coax. Would they work double-duty as flybacks in that configuration? > Pardon the anthropomorphisms - I have already confessed my intellectual > limitations in the field. > > Hot switching is a theoretical possibility but if that means an > operator-induced lack of synchrony between keying the TX and switching the > antennas, I choose to believe it unlikely. And failures three times and > every time and only when on that antenna system but not on any other? > Improbable, I would think. > > In any case, the system that used the RF coax for the antenna relay > voltages is no longer here. When it was here, I had repeated and rather > expensive PA blowups. As soon as it left everything worked just right. > Reverting to my other profession?s argot, that?s a correlation that > implies causation. Lots of human behavior has been built on less. > > Anyway, life is good again. My K2 is happy. The people who sold me the > new remote switch probably are too. > > Ted, KN1CBR > > >> >> ------------------------------ >> >> Message: 17 >> Date: Sat, 21 May 2016 13:59:50 -0700 >> From: Josh Fiden <j...@voodoolab.com> >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] K2 PA Failures and Remote Antenna Switch >> System >> Message-ID: <5740cc46.3070...@voodoolab.com> >> Content-Type: text/plain; charset=utf-8; format=flowed >> >> Reviewing the schematic on Ameritron.com for RCS-4 there is a 220uF >> electrolytic across each relay coil. There are also a pair of diodes >> which will clamp the coil voltage, although it might not be immediately >> apparent since they're not directly across the coils. Unlikely that >> these parts are missing since they're not just clamps, but necessary for >> the selector to function. >> >> This does not look like any design flaw of the RCS-4. If I had to guess >> without seeing the hardware, it seems more likely that a failure >> occurred to cause hot switching of the antenna... if that was happening >> repeatedly, the finals wouldn't be happy! >> >> 73, >> Josh W6XU >> >>> Inside the relay box I found no diodes and no capacitors across the >>> relays that might have been used in the design to avoid this kind of >>> problem. >> > > ------------------------------ > > Message: 8 > Date: Sat, 21 May 2016 23:33:46 -0500 > From: Richard Fjeld <rpfj...@outlook.com> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 Equalizer comment > Message-ID: <blu436-smtp17451493849ea08af8f2f3abf...@phx.gbl> > Content-Type: text/plain; charset="windows-1252"; format=flowed > > By looking at how his signal filled out the voice band in the waterfall, > and also the pattern of it on the display. It is a crude test using a > person's voice. Audio reports were the final test. He wasn't able to > adjust it by monitoring his own voice. > > It would be better if the transmitting station had something like an AF > generator audibly coupled to the microphone to do a freq run within the > voice band at a constant audio level. > > Dick, n0ce > > > On 5/21/2016 9:01 PM, Jim Brown wrote: >> On Sat,5/21/2016 7:54 AM, Richard Fjeld wrote: >>> I was asked to help a ham get the transmit audio on his new import >>> equalized. What an experience! >> >> How did you use the P3 to do this? >> >> 73, Jim K9YC >> >> ______________________________________________________________ >> 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 >> Message delivered to rpfj...@outlook.com > > > > ------------------------------ > > Message: 9 > Date: Sat, 21 May 2016 23:33:59 -0700 > From: Josh Fiden <j...@voodoolab.com> > To: "Dauer, Edward" <eda...@law.du.edu>, "elecraft@mailman.qth.net" > <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] K2 PA Failures and Remote Antenna Switch > Message-ID: <574152d7.9050...@voodoolab.com> > Content-Type: text/plain; charset=utf-8; format=flowed > > Hi Ted, > > I see that you're right about no big caps on two of the relays. I was > looking at the current version schematic, but there's an older one > posted on W8JI's site with a completely different arrangement which must > be what you had. That older circuit design is less than clever (IMHO). > > When a relay is deenergized, the steering diodes & part of the bridge > are all forward biased forming a clamp of sorts. Not as effective as if > a diode were directly across the coil with short leads. > > I did not mean to imply operator error as the cause of failure. I was > guessing hot switching the antenna related to some intermittent hardware > problem. > > Glad you found the source of the problem. Sounds like you put that old > RCS-4 right where it belongs! > > 73, > Josh W6XU > > On 5/21/2016 9:05 PM, Dauer, Edward wrote: >> Josh ? >> >> Thanks for looking further into it. I looked pretty carefully before the >> RCS-4 went into the trash - no electrolytics in the relay box that I could >> see. Maybe a manufacturing defect rather than a design defect? But it?s >> in a landfill somewhere now so I can?t confirm that. In my profession a >> skeptic might call that spoliation of the evidence. But the traces on the >> ?scope as I switched through the selector with no transmitter attached >> were unmistakable - very large very fast transient spikes. Not a good >> thing, whatever the cause. >> >> I wonder if the diodes that are in the RCS-4 system are actually being >> used as flyback or suppressor diodes. The RCS-4 power supply is low >> voltage AC, not DC. The diodes in the control box separate the positive >> half cycle from the negative half cycle; as I read it the diodes that are >> in the relay box select for each relay the half cycle they like, telling >> the relays to do what the control switch says it asked them to do given >> that there is but one relay voltage conductor - the center lead of the RF >> coax. Would they work double-duty as flybacks in that configuration? >> Pardon the anthropomorphisms - I have already confessed my intellectual >> limitations in the field. >> >> Hot switching is a theoretical possibility but if that means an >> operator-induced lack of synchrony between keying the TX and switching the >> antennas, I choose to believe it unlikely. And failures three times and >> every time and only when on that antenna system but not on any other? >> Improbable, I would think. >> >> In any case, the system that used the RF coax for the antenna relay >> voltages is no longer here. When it was here, I had repeated and rather >> expensive PA blowups. As soon as it left everything worked just right. >> Reverting to my other profession?s argot, that?s a correlation that >> implies causation. Lots of human behavior has been built on less. >> >> Anyway, life is good again. My K2 is happy. The people who sold me the >> new remote switch probably are too. >> >> Ted, KN1CBR >> > > > > ------------------------------ > > Message: 10 > Date: Sun, 22 May 2016 00:01:39 -0700 > From: John W Webster <jwebster...@gmail.com> > To: elecraft@mailman.qth.net > Subject: [Elecraft] Elecraft Weekly SSB Net > Message-ID: <2613b6b1-937d-419e-bb85-c7be17169...@gmail.com> > Content-Type: text/plain; charset=us-ascii > > Please consider joining us for the weekly Sunday Elecraft SSB net on 20m. > > Time: 18:00z (UTC) 11am Pacific; 2pm Eastern > Frequency: 14.303.5 > > We would love to have the first KX2 checkin from wherever you are (Dayton > even!) > > Current net control, Eric WB9JNZ sent the following list of check-ins over > the last > two weeks with particularly difficult propagation. > > 73 > > John, N6JW > > Elecraft Net 5-15-16 > > WB9JNZ Eric IL K3 4017 Net Control NSRC CLUB MEMBER > > W4RKS Jim TX K3 3618 > > KG5ABW Ed MI Yaesu ft 1200 1st time check in > > W8OV Dave TX K3 3139 > > N9TF Gene IL K3S 10057 > > N6JW John CA K3 936 > > K5ZCJ Larry OK K3S 10032 > > NC0JW Jim CO K3 1356 > > K1NW Brian RI K3 4974 > > KC9USC Robert IL KX3 4460 NSRC CLUB MEMBER > > KK6DA David CA K3S 10125 > > W4DML Doug TN K3 6433 > > NS7P Phil OR K3 1826 > > K6WDE Dave CA KX3 4599 > > W0CZ Ken ND K3S 10329 > > W7QHD Kurt AZ K2 1538 > > N9DC/M Maurice IN IC 7000 > > WM6P Steve GA K3 8133 > > KE7HGE Ken WA KX3 4540 QRP > > N4NRW Roger SC K3 1318 > > K7BRR Bill AZ K3 5545 > > VA7ZOO Bill BC KX3 3035 QRP > > K6VDN John NV KX3 8046 > > > > Elecraft Net 5-8-16 > > WB9JNZ Eric IL K3 4017 Net Control > > NM7J Steve NV K3 2105 > > K5ZCJ Larry OK K3S 10032 > > NC0JW Jim CO K3 1356 > > WB5JJA Ray OK K3 7877 > > W7SNR Bob AZ K3 343 > > W2RWA Dick NY K3 2603 > > KK6DA David CA K3S 10125 > > W4RKS Jim TX K3 3618 > > N6JW John CA K3 936 > > KD6SBK Bruce AZ FT 857 > > W7QHD Kurt AZ K2 1538 > > AE7MX August AZ unknown radio > > N9SRA Steve IL K3S 10563 NSRC CLUB MEMBER > > K6WDE Dave CA KX3 4599 > > K7BRR Bill AZ K3 5545 > > ------------------------------ > > Message: 11 > Date: Sun, 22 May 2016 06:08:00 -0700 > From: George Rebong <ke6t...@gmail.com> > To: elecraft@mailman.qth.net > Subject: [Elecraft] For sale P3-SVGA-Monitor > Message-ID: <e3a41bb3-1ded-4e45-8e29-8ca2ab273...@gmail.com> > Content-Type: text/plain; charset=us-ascii > > Selling my Elecraft P3 High performance Panadaptor with P3SVGA Video Adapter > and P3TXMON TX Monitor Power and Waveform Display Adapter with > DCHF-2000 1.8-54 MHz, 1- 2000W HF 2000W Max directional coupler. > $950 includes shipping to CONUS. Non Smoker. Paypal or USPS money order. > George KE6TE Call 916-600-2717. > > Sent from my iPad > > ------------------------------ > > Message: 12 > Date: Sun, 22 May 2016 09:27:57 -0400 > From: Steve Ellington <steven...@gmail.com> > To: elecraft@mailman.qth.net > Subject: [Elecraft] SP-3 Speakers SOLD > Message-ID: > <cahbt4rvhqxtczm8wgnh0e8bfrljwi2_qfkgu_cwbq9jgod_...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > They're gone. > Thanks to the multitude who replied! > N4LQ > > > ------------------------------ > > Message: 13 > Date: Sun, 22 May 2016 09:52:14 -0500 > From: David Orman <orma...@corenode.com> > To: N6MQL <n6...@arrl.net> > Cc: Elecraft Reflector <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: > <cagxz45pv6u_x0jeahez3px95yqvg0jn+_vhdac2h8jnf2sn...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Another question - how long/what gauge is the wire running to your KXPA100? > I wouldn't expect enough drop to pull your voltage down to a point at which > it cuts back power, but you never know. Check your KX3 for the source > voltage when transmitting, that'll tell you if you're dropping below the > threshold for power reduction. For example, 16 gauge copper will drop about > 1.2 volts on a 10 foot run @ 15A current draw. > > On Sat, May 21, 2016 at 9:58 PM, N6MQL <n6...@arrl.net> wrote: > >> Wayne, >> >> 2 things... First I mentioned to David S in the service department that >> the K3 is no longer transmitting more than 94 watts out on 17 meters >> regardless of the SWR/ impedance. David said that this was a known issue >> due to software and that it was being worked on. However I haven't seen >> anything about this issue so I'm wondering if this is true and if so has >> there been any updates to fix it. >> Secondly, I'm noticing that my KXPA100 can not produce more that 80 watts >> on most bands and 60 on others when I don't supply it with as much as 15v >> DC on a 30 amp supply. This after I did the KX3 / KPXA calibration >> procedure. Why is it that a "mobile" amp that would normally be powered >> with 12v DC from a car battery not be able to provide the power output that >> it is sold as (100 watts)?. Has there been some kind of revisions to the >> first run boards that I should be exchanging them with? >> >> Thank you for your answers 73 >> >> Mike >> N6MQL >> ______________________________________________________________ >> 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 >> Message delivered to orma...@corenode.com >> > > > ------------------------------ > > Message: 14 > Date: Sun, 22 May 2016 11:40:43 -0400 > From: Nr4c <n...@widomaker.com> > To: David Orman <orma...@corenode.com> > Cc: N6MQL <n6...@arrl.net>, Elecraft Reflector > <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <f6378513-b4d3-4d58-8766-377e33184...@widomaker.com> > Content-Type: text/plain; charset=us-ascii > > Or just use the Voltage reading displayed on the K3/KX3 front panel. It's > quite accurate. > > Sent from my iPhone > ...nr4c. bill > > >> On May 22, 2016, at 10:52 AM, David Orman <orma...@corenode.com> wrote: >> >> Another question - how long/what gauge is the wire running to your KXPA100? >> I wouldn't expect enough drop to pull your voltage down to a point at which >> it cuts back power, but you never know. Check your KX3 for the source >> voltage when transmitting, that'll tell you if you're dropping below the >> threshold for power reduction. For example, 16 gauge copper will drop about >> 1.2 volts on a 10 foot run @ 15A current draw. >> >>> On Sat, May 21, 2016 at 9:58 PM, N6MQL <n6...@arrl.net> wrote: >>> >>> Wayne, >>> >>> 2 things... First I mentioned to David S in the service department that >>> the K3 is no longer transmitting more than 94 watts out on 17 meters >>> regardless of the SWR/ impedance. David said that this was a known issue >>> due to software and that it was being worked on. However I haven't seen >>> anything about this issue so I'm wondering if this is true and if so has >>> there been any updates to fix it. >>> Secondly, I'm noticing that my KXPA100 can not produce more that 80 watts >>> on most bands and 60 on others when I don't supply it with as much as 15v >>> DC on a 30 amp supply. This after I did the KX3 / KPXA calibration >>> procedure. Why is it that a "mobile" amp that would normally be powered >>> with 12v DC from a car battery not be able to provide the power output that >>> it is sold as (100 watts)?. Has there been some kind of revisions to the >>> first run boards that I should be exchanging them with? >>> >>> Thank you for your answers 73 >>> >>> Mike >>> N6MQL >>> ______________________________________________________________ >>> 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 >>> Message delivered to orma...@corenode.com >>> >> ______________________________________________________________ >> 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 >> Message delivered to n...@widomaker.com > > > > ------------------------------ > > Message: 15 > Date: Sun, 22 May 2016 08:58:12 -0700 (MST) > From: Bob N3MNT <b...@hogbytes.com> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <1463932692247-7617749.p...@n2.nabble.com> > Content-Type: text/plain; charset=us-ascii > > I noticed that my KXPA100 output was a little low so I checked the output of > my 30A supply. It was a little low. I adjusted it up from 13.6V to 14.0 > and all is well. > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-and-KX3-questions-for-Wayne-tp7617739p7617749.html > Sent from the Elecraft mailing list archive at Nabble.com. > > > ------------------------------ > > Message: 16 > Date: Sun, 22 May 2016 16:05:24 GMT > From: "a...@juno.com" <a...@juno.com> > To: elecraft@mailman.qth.net > Subject: [Elecraft] [KX2] To new KX2 owners > Message-ID: <20160522.110524.831...@webmail51.vgs.untd.com> > Content-Type: text/plain; charset=windows-1252 > > I'm glad you left some back in Aptos so that us stay-at-homes had stock from > which to order :-) > > John AE5X > http://ae5x.blogspot.com/ > > > _________________________________________ > >> If you were among those who scooped up (in record time) the KX2s we brought >> to Dayton: thanks for your enthusiastic response! (Wish we'd brought more :) > ____________________________________________________________ > The New York Times > Finding Love Again, This Time With A Man > http://thirdpartyoffers.juno.com/TGL3131/5741d8ef922e758ef57a0st03vuc > > > ------------------------------ > > Message: 17 > Date: Sun, 22 May 2016 12:19:22 -0500 > From: Art Nienhouse <ka9...@gmail.com> > To: Harry Yingst via Elecraft <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <5741ea1a.1070...@gmail.com> > Content-Type: text/plain; charset=iso-8859-15; format=flowed > > */My experience with my KXPA-100 that the power output would not ever > get to the advertised 100 watts on 40 meters using the supplied power > cable that came with my kit was worse. > > Even after setting the 45 amp power supply to the highest out put it > would do, the radio reported 13.8 volts on receive, on key down it would > drop well below ( on some bands ) to 12 volts. > > After replacing the pwr cable with a 10 gauge wire the supply reported > at the radio is 14.5 rx, tx is 13.8 the power output is at 100 watts > most bands 110 on one band and the only band I really care about is 40 > where it always has been below the other bands is now at 99 to 100 watts. > > I believe that there was a firmware update that made this issue worse as > it was at one time doing around 80 to 85 watts on 40 meters which I was > living with, most other bands 100 to 110 watts, using the supplied > power cable that came with my kit. > > If its sold as a mobile amp then it should be capable of doing the > advertised 100 watts ....at 12 volts.... ......( I know the advertizing > stated at 13.8 volts ) ......to achieve the 100 watts. > > To be completely truthful it should be stated what can be expected for > power out at 12 v connected to a car deep cycle battery with the > supplied power cable...mine did 60 watts on 40 meters with the latest > bata firmware. > > At the very least a ( quality 10 gauge power cable ) should be supplied > with the amp, and all 100 watt output radios. > I took the advice of this group to purchase Powerwerx Red/Black power > cable not the cheapest however quality is very good. > With my power supply set to 14.4 volts I get the advertized 100 watts now. > > Regards > Art > ka9zap > /* > On 5/21/2016 9:58 PM, N6MQL wrote: >> Wayne, >> >> 2 things... First I mentioned to David S in the service department that the >> K3 is no longer transmitting more than 94 watts out on 17 meters regardless >> of the SWR/ impedance. David said that this was a known issue due to >> software and that it was being worked on. However I haven't seen anything >> about this issue so I'm wondering if this is true and if so has there been >> any updates to fix it. >> Secondly, I'm noticing that my KXPA100 can not produce more that 80 watts on >> most bands and 60 on others when I don't supply it with as much as 15v DC on >> a 30 amp supply. This after I did the KX3 / KPXA calibration procedure. Why >> is it that a "mobile" amp that would normally be powered with 12v DC from a >> car battery not be able to provide the power output that it is sold as (100 >> watts)?. Has there been some kind of revisions to the first run boards that >> I should be exchanging them with? >> >> Thank you for your answers 73 >> >> Mike >> N6MQL >> ______________________________________________________________ >> 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 >> Message delivered to ka9...@gmail.com > > > > ------------------------------ > > Message: 18 > Date: Sun, 22 May 2016 11:52:32 -0600 > From: Ken G Kopp <kengk...@gmail.com> > To: Nr4c <n...@widomaker.com>, elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: > <CAD4CdTPPGyxTmc2Orj=g5khdkgrkpmoqqdzn9k9bwez7br7...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > Bill, > > The front panel voltage display on a KX3 will -not- be accurate > for the voltage at the input- power connector of the KXPA100. > This voltage must be measured AT THE CONNECTOR on the > rear of the KXPA100 to know what's being delivered to the PA. > > 73! > > K0PP > > On Sun, May 22, 2016 at 9:40 AM, Nr4c <n...@widomaker.com> wrote: > >> Or just use the Voltage reading displayed on the K3/KX3 front panel. It's >> quite accurate. >> >> Sent from my iPhone >> ...nr4c. bill >> >> >>> On May 22, 2016, at 10:52 AM, David Orman <orma...@corenode.com> wrote: >>> >>> Another question - how long/what gauge is the wire running to your >> KXPA100? >>> I wouldn't expect enough drop to pull your voltage down to a point at >> which >>> it cuts back power, but you never know. Check your KX3 for the source >>> voltage when transmitting, that'll tell you if you're dropping below the >>> threshold for power reduction. For example, 16 gauge copper will drop >> about >>> 1.2 volts on a 10 foot run @ 15A current draw. >>> >>>> On Sat, May 21, 2016 at 9:58 PM, N6MQL <n6...@arrl.net> wrote: >>>> >>>> Wayne, >>>> >>>> 2 things... First I mentioned to David S in the service department that >>>> the K3 is no longer transmitting more than 94 watts out on 17 meters >>>> regardless of the SWR/ impedance. David said that this was a known issue >>>> due to software and that it was being worked on. However I haven't seen >>>> anything about this issue so I'm wondering if this is true and if so has >>>> there been any updates to fix it. >>>> Secondly, I'm noticing that my KXPA100 can not produce more that 80 >> watts >>>> on most bands and 60 on others when I don't supply it with as much as >> 15v >>>> DC on a 30 amp supply. This after I did the KX3 / KPXA calibration >>>> procedure. Why is it that a "mobile" amp that would normally be powered >>>> with 12v DC from a car battery not be able to provide the power output >> that >>>> it is sold as (100 watts)?. Has there been some kind of revisions to the >>>> first run boards that I should be exchanging them with? >>>> >>>> Thank you for your answers 73 >>>> >>>> Mike >>>> N6MQL >>>> ______________________________________________________________ >>>> 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 >>>> Message delivered to orma...@corenode.com >>>> >>> ______________________________________________________________ >>> 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 >>> Message delivered to n...@widomaker.com >> >> ______________________________________________________________ >> 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 >> Message delivered to kengk...@gmail.com >> > > > ------------------------------ > > Message: 19 > Date: Sun, 22 May 2016 11:13:26 -0700 > From: Walter Underwood <wun...@wunderwood.org> > To: Elecraft List <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <c4a14c47-c9de-4d18-a8cf-32e6a456c...@wunderwood.org> > Content-Type: text/plain; charset=us-ascii > > According to the manual, you can use the KXPA Utility to read the voltmeter > inside the KXPA100. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On May 22, 2016, at 10:52 AM, Ken G Kopp <kengk...@gmail.com> wrote: >> >> Bill, >> >> The front panel voltage display on a KX3 will -not- be accurate >> for the voltage at the input- power connector of the KXPA100. >> This voltage must be measured AT THE CONNECTOR on the >> rear of the KXPA100 to know what's being delivered to the PA. >> >> 73! >> >> K0PP >> >> On Sun, May 22, 2016 at 9:40 AM, Nr4c <n...@widomaker.com> wrote: >> >>> Or just use the Voltage reading displayed on the K3/KX3 front panel. It's >>> quite accurate. >>> >>> Sent from my iPhone >>> ...nr4c. bill >>> >>> >>>> On May 22, 2016, at 10:52 AM, David Orman <orma...@corenode.com> wrote: >>>> >>>> Another question - how long/what gauge is the wire running to your >>> KXPA100? >>>> I wouldn't expect enough drop to pull your voltage down to a point at >>> which >>>> it cuts back power, but you never know. Check your KX3 for the source >>>> voltage when transmitting, that'll tell you if you're dropping below the >>>> threshold for power reduction. For example, 16 gauge copper will drop >>> about >>>> 1.2 volts on a 10 foot run @ 15A current draw. >>>> >>>>> On Sat, May 21, 2016 at 9:58 PM, N6MQL <n6...@arrl.net> wrote: >>>>> >>>>> Wayne, >>>>> >>>>> 2 things... First I mentioned to David S in the service department that >>>>> the K3 is no longer transmitting more than 94 watts out on 17 meters >>>>> regardless of the SWR/ impedance. David said that this was a known issue >>>>> due to software and that it was being worked on. However I haven't seen >>>>> anything about this issue so I'm wondering if this is true and if so has >>>>> there been any updates to fix it. >>>>> Secondly, I'm noticing that my KXPA100 can not produce more that 80 >>> watts >>>>> on most bands and 60 on others when I don't supply it with as much as >>> 15v >>>>> DC on a 30 amp supply. This after I did the KX3 / KPXA calibration >>>>> procedure. Why is it that a "mobile" amp that would normally be powered >>>>> with 12v DC from a car battery not be able to provide the power output >>> that >>>>> it is sold as (100 watts)?. Has there been some kind of revisions to the >>>>> first run boards that I should be exchanging them with? >>>>> >>>>> Thank you for your answers 73 >>>>> >>>>> Mike >>>>> N6MQL >>>>> ______________________________________________________________ >>>>> 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 >>>>> Message delivered to orma...@corenode.com >>>>> >>>> ______________________________________________________________ >>>> 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 >>>> Message delivered to n...@widomaker.com >>> >>> ______________________________________________________________ >>> 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 >>> Message delivered to kengk...@gmail.com >>> >> ______________________________________________________________ >> 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 >> Message delivered to wun...@wunderwood.org > > > > ------------------------------ > > Message: 20 > Date: Sun, 22 May 2016 14:15:05 -0400 > From: "Alan D. Wilcox" <a...@wilcoxengineering.com> > To: elecraft@mailman.qth.net > Subject: [Elecraft] Tuneup, Rescue, build your K2, K1, KX1, others > Message-ID: > <db50aeff-b1df-4c2f-af92-426def55c...@wilcoxengineering.com> > Content-Type: text/plain; charset=us-ascii > > Hello, > > Have you always wanted an Elecraft? A KX1, K1, K2, K3, whatever? > Does your K2 need a tuneup? > I build and service them all! > > See what my clients have said about my construction and service work at > http://www.eham.net/reviews/detail/6768 > <http://www.eham.net/reviews/detail/6768> > > Photos of the popular "Twins" -- the KPA100 and KAT100 in EC2 enclosure -- > are at > http://wilcoxengineering.com/kpa100-in-ec2/ > <http://wilcoxengineering.com/kpa100-in-ec2/> > > In addition to tuning your rig, I can also rescue a building project you > might have started some time ago. > > Cheers, > Alan > > Alan D. Wilcox, W3DVX (K2-5373, K3-40) > 570-478-0736 (cell, text) > http://amazon.com/author/alandwilcox > Williamsport, PA 17701 > > > > ------------------------------ > > Message: 21 > Date: Sun, 22 May 2016 14:27:29 -0400 > From: Ed Hoeck <edk...@gmail.com> > To: Elecraft@mailman.qth.net > Subject: [Elecraft] sub files > Message-ID: > <CAArGK3ShvR7-4tBq9GY+G3UcCrqVMM++RA9W0_m+tbR8WB=-a...@mail.gmail.com> > Content-Type: text/plain; charset=UTF-8 > > I keep getting the error message from Spot Collector that the file > BandModes.txt does not exist how do I correct this problem. > > > ------------------------------ > > Message: 22 > Date: Sun, 22 May 2016 11:40:03 -0700 > From: "kev...@coho.net" <kev...@coho.net> > To: elecraft@mailman.qth.net > Subject: [Elecraft] Elecraft CW Net Announcement > Message-ID: <9c2ef4f1-614b-2123-700b-aac46098d...@coho.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > After a cold, wet week at least the propagation has marginally > improved. A new Elecraft rig was announced on Wednesday. It looks like > a good fit for those of us who work a little radio into our hiking, > canoeing, or XC skiing sojourns. I was reading history (which I am > wont to do) and found a QRP rig circa 1965. It was interesting to > compare Elecraft's new rig with this design : > http://www.militaryradio.com/spyradio/delco5300.html. How things have > changed! > > Please join us on: > 14050 kHz at 2200z Sunday (3 PM PDT Sunday) > 7045 kHz at 0100z Monday (6 PM PDT Sunday) > > 73, > Kevin. KD5ONS > > > > ------------------------------ > > Message: 23 > Date: Sun, 22 May 2016 11:46:13 -0700 > From: N6MQL <pncengineer...@gmail.com> > To: Elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <5741fe75.9040...@gmail.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Although I appreciate all of your answers I specifically asked these > questions of Wayne because I was making a point to let him know of my > disapproval of the fact that the KXPA100 amp is incapable of running a > full 100 watts on a standard 12v battery. Furthermore I was trying to > get an explanation from the head designer as to why my amp that has a > 30amp power supply at 15v (read on the KX3) or 15.4v at the input is > unable to transmit at a full 100 watts on all bands. Yes, I have the > supplied cable with fuses attached, it's only 3 feet long, and the > transmit vs' receive voltage is less than a volt difference. So all of > those bases have been covered. As noted I have also completed the KX3 > power configuration, and the KX3 to KPA matching alignment procedure... > I was alluded to the idea that there were a second revision of boards > that came out for the KXPA100 after the early models were shipped. I > have also heard that those boards help increase the output power. > Therefore I was asking WAYNE if this were the case, and perhaps having > them would help this situation. As for the 12v not running the amp, this > IS an issue because at field day we have 150 Ah batteries that run 12 > volts, and it would be nice to have my 100 watt amp run a full 100 > watts. Again, this was designed as a portable amp. I would expect that > at 12v we should be able to get the full rating out of it. > > On another note, what may have also gotten lost due to all those trying > to be helpful, but cluttering my original post. I have a K3 that no > longer puts out 100 watts on 17 meters but does on all other bands. I > was told this was a software issue by Tech Support. I would like > confirmation FROM WAYNE that this is the case, and when he may have time > to address it. If not, I would like to know why I was told this. > > So again, as much as I appreciate all of you trying to help with these > questions, I would much prefer that Wayne address them personally. > Thank you, > > -- > Michael > N6MQL > > > > ------------------------------ > > Message: 24 > Date: Sun, 22 May 2016 12:32:46 -0700 > From: Fred Jensen <k6...@foothill.net> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 Equalizer comment > Message-ID: <ae9b8758-9fad-4f62-aaa3-79f21a506...@foothill.net> > Content-Type: text/plain; charset=windows-1252; format=flowed > > One of the first things I noticed after getting the P3 and poking around > the phone bands was how frequently a station's audio was concentrated > right next to the suppressed carrier. > > K9YC helped me set my TX EQ, and the goal was to cut the lows [next to > the carrier frequency] which consume a lot of the RF power and > contribute little if anything to intelligibility. With a 5 or 6 KHz > span, the display is very striking and signals with a desirable spectrum > seem to be a bit rare. > > I don't frequent SSB very often, but when I do, usually in an NAQP or > Sweepstakes, I regularly get unsolicited "Great audio" comments with > Jim's settings. > > 73, > > Fred K6DGW > - Northern California Contest Club > - CU in the Cal QSO Party 1-2 Oct 2016 > - www.cqp.org > > On 5/21/2016 9:33 PM, Richard Fjeld wrote: >> By looking at how his signal filled out the voice band in the waterfall, >> and also the pattern of it on the display. It is a crude test using a >> person's voice. Audio reports were the final test. He wasn't able to >> adjust it by monitoring his own voice. >> >> It would be better if the transmitting station had something like an AF >> generator audibly coupled to the microphone to do a freq run within the >> voice band at a constant audio level. >> >> Dick, n0ce >> >> On 5/21/2016 9:01 PM, Jim Brown wrote: >>> On Sat,5/21/2016 7:54 AM, Richard Fjeld wrote: >>>> I was asked to help a ham get the transmit audio on his new import >>>> equalized. What an experience! >>> >>> How did you use the P3 to do this? >>> >>> 73, Jim K9YC > > > > ------------------------------ > > Message: 25 > Date: Sun, 22 May 2016 13:04:13 -0700 > From: "Ron D'Eau Claire" <r...@cobi.biz> > To: "'Ken G Kopp'" <kengk...@gmail.com>, "'Nr4c'" > <n...@widomaker.com>, <elecraft@mailman.qth.net> > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <005101d1b465$1d25ad00$57710700$@biz> > Content-Type: text/plain; charset="us-ascii" > > Actually it is a good measurement when the KXPA100 and KX3 are set up > 'normally' with power to the KX3 supplied via the KXPA100. > > What the KX3 will display is the voltage present at the input to the KXPA100 > (because that's where the KX3 is getting its power) less any voltage drop in > the cable from the KXPA100 to the KX3. > > So if the voltage reads good at the KX3 with that setup, it's good at the > KXPA100. > > 73, Ron AC7AC > > -----Original Message----- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken G > Kopp > Sent: Sunday, May 22, 2016 10:53 AM > To: Nr4c; elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > > Bill, > > The front panel voltage display on a KX3 will -not- be accurate for the > voltage at the input- power connector of the KXPA100. > This voltage must be measured AT THE CONNECTOR on the rear of the KXPA100 to > know what's being delivered to the PA. > > 73! > > K0PP > > On Sun, May 22, 2016 at 9:40 AM, Nr4c <n...@widomaker.com> wrote: > >> Or just use the Voltage reading displayed on the K3/KX3 front panel. >> It's quite accurate. >> >> Sent from my iPhone >> ...nr4c. bill >> >> >>> On May 22, 2016, at 10:52 AM, David Orman <orma...@corenode.com> wrote: >>> >>> Another question - how long/what gauge is the wire running to your >> KXPA100? >>> I wouldn't expect enough drop to pull your voltage down to a point >>> at >> which >>> it cuts back power, but you never know. Check your KX3 for the >>> source voltage when transmitting, that'll tell you if you're >>> dropping below the threshold for power reduction. For example, 16 >>> gauge copper will drop >> about >>> 1.2 volts on a 10 foot run @ 15A current draw. >>> >>>> On Sat, May 21, 2016 at 9:58 PM, N6MQL <n6...@arrl.net> wrote: >>>> >>>> Wayne, >>>> >>>> 2 things... First I mentioned to David S in the service department >>>> that the K3 is no longer transmitting more than 94 watts out on 17 >>>> meters regardless of the SWR/ impedance. David said that this was a >>>> known issue due to software and that it was being worked on. >>>> However I haven't seen anything about this issue so I'm wondering >>>> if this is true and if so has there been any updates to fix it. >>>> Secondly, I'm noticing that my KXPA100 can not produce more that 80 >> watts >>>> on most bands and 60 on others when I don't supply it with as much >>>> as >> 15v >>>> DC on a 30 amp supply. This after I did the KX3 / KPXA calibration >>>> procedure. Why is it that a "mobile" amp that would normally be >>>> powered with 12v DC from a car battery not be able to provide the >>>> power output >> that >>>> it is sold as (100 watts)?. Has there been some kind of revisions >>>> to the first run boards that I should be exchanging them with? >>>> >>>> Thank you for your answers 73 >>>> >>>> Mike >>>> N6MQL >>>> ______________________________________________________________ >>>> 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 Message delivered to >>>> orma...@corenode.com >>>> >>> ______________________________________________________________ >>> 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 Message delivered to >>> n...@widomaker.com >> >> ______________________________________________________________ >> 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 Message delivered to >> kengk...@gmail.com >> > ______________________________________________________________ > 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 Message > delivered to r...@elecraft.com > > > > ------------------------------ > > Message: 26 > Date: Sun, 22 May 2016 16:09:07 -0500 > From: Kevin Stover <kevin.sto...@mediacombb.net> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <2fae177f-8241-9645-3897-525be74ae...@mediacombb.net> > Content-Type: text/plain; charset=windows-1252; format=flowed > > You do know what's going on this weekend right? > I'm sure once he is back from Dayton he will give your questions all of > they attention they deserve. > What sort of watt meter are we measuring the output with? > > On 5/22/2016 1:46 PM, N6MQL wrote: >> Although I appreciate all of your answers I specifically asked these >> questions of Wayne because I was making a point to let him know of my >> disapproval of the fact that the KXPA100 amp is incapable of running a >> full 100 watts on a standard 12v battery. Furthermore I was trying to >> get an explanation from the head designer as to why my amp that has a >> 30amp power supply at 15v (read on the KX3) or 15.4v at the input is >> unable to transmit at a full 100 watts on all bands. Yes, I have the >> supplied cable with fuses attached, it's only 3 feet long, and the >> transmit vs' receive voltage is less than a volt difference. So all >> of those bases have been covered. As noted I have also completed the >> KX3 power configuration, and the KX3 to KPA matching alignment >> procedure... >> I was alluded to the idea that there were a second revision of boards >> that came out for the KXPA100 after the early models were shipped. I >> have also heard that those boards help increase the output power. >> Therefore I was asking WAYNE if this were the case, and perhaps having >> them would help this situation. As for the 12v not running the amp, >> this IS an issue because at field day we have 150 Ah batteries that >> run 12 volts, and it would be nice to have my 100 watt amp run a full >> 100 watts. Again, this was designed as a portable amp. I would expect >> that at 12v we should be able to get the full rating out of it. >> >> On another note, what may have also gotten lost due to all those >> trying to be helpful, but cluttering my original post. I have a K3 >> that no longer puts out 100 watts on 17 meters but does on all other >> bands. I was told this was a software issue by Tech Support. I would >> like confirmation FROM WAYNE that this is the case, and when he may >> have time to address it. If not, I would like to know why I was told >> this. >> >> So again, as much as I appreciate all of you trying to help with these >> questions, I would much prefer that Wayne address them personally. >> Thank you, >> > > > -- > R. Kevin Stover > AC0H > ARRL > FISTS #11993 > SKCC #215 > NAQCC #3441 > > > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > ------------------------------ > > Message: 27 > Date: Sun, 22 May 2016 14:46:00 -0700 > From: Jim Brown <j...@audiosystemsgroup.com> > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 and KX3 questions for Wayne > Message-ID: <57422898.9050...@audiosystemsgroup.com> > Content-Type: text/plain; charset=windows-1252; format=flowed > > On Sun,5/22/2016 11:46 AM, N6MQL wrote: >> Although I appreciate all of your answers I specifically asked these >> questions of Wayne because I was making a point to let him know of my >> disapproval of the fact that the KXPA100 amp is incapable of running a >> full 100 watts on a standard 12v battery. > > Michael, > > A careful reading of the online data sheet for the KXPA100 is > instructive here. > > http://www.elecraft.com/KXPA100/kxpa100.htm > > The first line says "100 watts at 13.8 V, 1.8 to 29.7 MHz and 80 watts > 50-54 MHz PEP CW/SSB/DATA; ? 1 dB" > > Two points: First, the amplifier is rated for 13.8V, NOT 12V. Second, > the rating is +/1 dB, which is +/- 20% power. Thus, 80W on the HF bands > is within spec for 13.8V at the amplifier terminals. > > The second line says "13.8 VDC powered; 20 A typical current drain (11 V > with lower output. 15 V max)" > > This clearly means that the unit is designed and rated for 13.8VDC, can > be operated from 11V to 15VDC, and will have reduced output at lower > supply voltages. > > Obviously, Ohm's Law dictates that resistance of the DC supply > conductors will reduce power supply voltage at the amplifier terminals, > so while we may have 12V or 13.8V at our battery terminals, the voltage > at the end of 6-12 ft of cable will be a bit lower with a 20A load. For > example, the drop in 6 ft of #10 is 0.24v; for #12, it's 0.38V, and for > #14, it's 0.6V. > > As others have noted, the operating voltage in so-called 12V DC power > systems using lead-acid batteries is not 12V, but rather 13.8V. If you > buy an AC power supply for ham gear, it will likely leave the factory > with its voltage regulator set for 13.8V. Open the manual or the spec > sheet for nearly all ham gear and you will find the supply voltage > specified as 13.8VDC. > > 73, Jim K9YC > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/elecraft > You must be a subscriber to post. > Elecraft web page: http://www.elecraft.com > > ------------------------------ > > End of Elecraft Digest, Vol 145, Issue 27 > *****************************************
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