[Elecraft] SOLD: FS; Elecraft T1
Subject says it all. Thanks for allowing me to post to the group. Jack - KD4IZ From: kd...@frawg.org Sent: Tuesday, August 22, 2023 14:58 To: 'elecraft@mailman.qth.net' Subject: FS; Elecraft T1 All, I have moved away from using my T1 and now use more "direct" antenna solutions. I am asking $250 delivered. I will accept PayPal or Zelle only if shipped. $240 cash if you live in the Baltimore - York, PA corridor and we can meet. PLEASE contact me direct at KD4IZfrawg,org. PLEASE DO NOT reply on the list. Jack - KD4IZ __ 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 arch...@mail-archive.com
[Elecraft] FS; Elecraft T1
All, I have moved away from using my T1 and now use more "direct" antenna solutions. I am asking $250 delivered. I will accept PayPal or Zelle only if shipped. $240 cash if you live in the Baltimore - York, PA corridor and we can meet. PLEASE contact me direct at KD4IZfrawg,org. PLEASE DO NOT reply on the list. Jack - KD4IZ __ 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 arch...@mail-archive.com
Re: [Elecraft] Something different, a KX3 on Scotland's highest, Ben Nevis
As a NASOTA follower and occasional activator, that was a fun story. Steven King film, forsooth, sounds to me like a balmy late summer day in Scotland. Glad there were no Boggarts in the cairn and some good brews afterward. Thanks for sharing! Jack Spitznagel - KD4IZ Associate Editor - AMSAT News Service AMSAT Ambassador kd...@arrl.net -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Paul GACEK via Elecraft Sent: Monday, September 5, 2022 02:02 To: Scott McDonald via Elecraft Subject: [Elecraft] Something different, a KX3 on Scotland's highest, Ben Nevis If interested in a few snaps and narrative of an adventure up Ben Nevis last week with my KX3 click on at https://nomadic.blog/2022/09/05/uks-highest-ben-nevis/ <https://nomadic.blog/2022/09/05/uks-highest-ben-nevis/> Paul M0SNA/W6PNG __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] DX Clusters reccomendation
Paul, You will probably find what you want to know here: https://www.dxcluster.info/ Your first choice to try are some of the more "open" clusters: VE7CC-1 W3LPL Part 2 is interpreting what you see. Since many DX Clusters report everything they are sent worldwide, Log4OM is probably like other loggers in that there is a way to limit what you see to a distance range circle around your locator. You should consult the Log4OM docs for setting that parameter. Jack Spitznagel -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Paul Huff Sent: Thursday, July 28, 2022 10:23 To: Elecraft Email List Subject: [Elecraft] DX Clusters reccomendation I'm starting to setup Log4OM on my new computer and it is "talking" great to my KX3. The software has more bells and whistles than I could ever imagine using. One of it's features is the ability to connect to various DX clusters for spotting. This is something that I have never done in the past but it looks like a very nice tool to use. Log4OM has a long list of clusters. Does anyone have a recommendation for one or two of the more popular and reliable ones to try out? Thanks and 73, Paul - N8XMS 100% QRP/CW __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] KPA500 Issue
Jim, All, James Bennett Wrote: > However, what I?m seeing is that when the amp is in OPER mode, my receive > signal strength drops way, way off to the point I have to go full AF volume > to hear signals. If I put the amp in STBY, signal levels go back to normal. I > also notice that the amp fan doesn?t take too long to crank up to high speed, > and the PA temp is sitting around 67 C. I occasionally use an IC-705 to drive either a KXPA100, a KPA500/KAT500 pair, or both in cascade. I have a keyline splitter (the one for the KX3 to the KXPA) that allows me to cascade the KXPA100 to the KPA500. After I accidentally popped ~100W into the input of the KPA500 while experimenting with the switching arrangement, my system suddenly had the identical problem Jim describes, a much attenuated signal on receive and normal transmit. It was R9. Taking the amp apart was much more involved than replacing the resistor. I found R9 split in two and the two halves standing (yes, really) on the solder pads. (photo available on request). The very kind folk at the mothership sent me a replacement for R9, a surface mount 50 ohm resistor, and it was an easy repair. I have everything set up with switching so I don't do it again. Now, when I put the IC-705 into the "cascade" mix, I set the rig output power to 5% which results in a 25-30W output from the KXPA100. 30W will drive the KPA500 to full power. I also use a sequential check list every time I bring the IC-705 into the shack to avoid the uncomfortable "oops" moment again. Note: make sure that the keyline that goes to the IC-705 has a 480 ohm resistor in series with the keyline jack tip when using a KXPA100... without it you can't use the IC-705 voice memories or the "DV TX Message" data in DR/DV mode without having the rig lock up in a transmit key up loop. The series resistor seems to have no effect on the ability of the 705 to key the KPA500. Please ask me offline if you have any additional questions about this setup. It has been stable and predictable ever since the repair was done 2 years back. Jack Spitznagel – KD4IZ kd...@arrl.net __ 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 arch...@mail-archive.com
Re: [Elecraft] RPN Calc App For Android
Fred, Byron, All, Fun OT thread! I am looking at my K Cooke Radio (Modified Polyphase Duplex Decitrig) and it's manuals... bought at the K store in NYC in 1972 while I was at USCG ET "A" School at Governors Island, NY. It still works! Next to it is my old Bowmar "Brain" calculator that I acquired a little later... also still works, but only with its power supply. Somewhere along the way there were a half dozen others - none really worth keeping since cell phone apps do the same basic calculations. I still prefer the slide rule approach because I don't need to judge what number of insignificant digits to discard/round off. LOL Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Fred Jensen Sent: Saturday, February 5, 2022 22:09 To: Reflector Elecraft Subject: Re: [Elecraft] RPN Calc App For Android I still have and use my K Log log Duplex Vector ... after all this time, I still remember the motions although I don't remember the formulae. There's something visual about it 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County Byron Servies wrote on 2/5/2022 2:49 PM: > On Mon, Jan 31, 2022 at 9:11 AM Clark Macaulay > wrote: >> Oh, I still have my K Log Log Duplex Decitrig slide rule with mahogany >> rails. YupI'm old. > For those of us who are younger but find slide rules fascinating, here > is a great reference: > > http://www.oughtred.org/ > > Yes, there is a society dedicated to slide rules. > > 73, Byron N6NUL -- This email has been checked for viruses by AVG. https://www.avg.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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] Power supply for KX3
Paul, The Astron is a real workhorse and a keeper if in good shape. If you must go light/small and are just powering the KX3, I would point you to Howie’s (ProAudio Engineering Kx33) power brick. It is nominally a 4A supply in same form as the laptop power supplies. Mine is quiet and a solid performer. That being said, I have the Powerwerx unit as well, not bad, but mine does create some low level RFI and fan noise both of which can be dealt with. If you are hooking up more than one piece of gear like the PX3 and other “stuff”, keep the Astron. Jack - KD4IZ Sent from my iPhone > On Oct 8, 2021, at 09:57, Paul Huff wrote: > > My beautiful bride of 44 years is encouraging me to upgrade my shack to an > Elecraft KX3. (Seriously, she is the one who brought it up!) At the same > time I will be reducing the footprint of all of my accumulated gear including > my ancient, but still working, Astron RS-35A power supply. Elecraft offers a > little switcher made by Powerwerx for $119, and for convince I might just go > ahead and add that to my KX3 order, but I thought that I would first ask if > any of you have other (better? less expensive?) suggestions for a switching > power supply to run the KX3 on? BTW, I’m strictly a QRP/CW op so there will > be no future plans for an amplifier. > > Thanks ahead of time for any thoughts and suggestions. > > 73, > > Paul - N8XMS > 100% QRP CW > > > > __ > 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] KPA100/KAT100 EC2 Combo to ICOM 705
Robin, I second Don's comments. To add, have been using my KXPA100AT with the 705 and have found it simple and trouble free. I know of quite a few other who do the same. Good discussions of that on ic-...@groups.io list. Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Don Wilhelm Sent: Wednesday, September 29, 2021 11:48 To: Robin Tew ; elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA100/KAT100 EC2 Combo to ICOM 705 Robin, That will not work. The KPA100 depends on internal signals from the base K2 such as AUXBUS and several other signals to operate and control power output. In other words, it is an amplifier dedicated to the K2 and not a general purpose amplifier. The KXPA100 and KXAT100 would serve you better than cobbling up an interface that would be quite complex. he signals needed are those in the 9 pin AUX IO connector. AUXBUS allows the base K2 firmware to 'talk' to the KPA100 firmware IC as well as the KAT100 firmware. 73, Don W3FPR On 9/29/2021 10:59 AM, Robin Tew wrote: > Hi All > Just thinking about using the KPA100/KAT100 EC2 Combo with the Icom 705. > > Any pointers,ideas,tips etc. To achieve this?. > Many thanks > Robin G4JDO > > __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] Off-topic: Musical composition
Oh My... I always thought it was a Viola and a Volkswagen... Jack Spitznagel – KD4IZ Science River LLC Biomedical Consulting Services -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Dan Presley Sent: Saturday, July 24, 2021 18:56 To: Terry Schieler Cc: K2 Subject: Re: [Elecraft] Off-topic: Musical composition Don’t get started on drummer jokes…or trombone or accordion or banjo . Seriously off topic! I will share my favorite at the risk of starting a thread…what’s the difference between an oboe and a Volkswagen? If you have to,really really have to…you can tune a Volkswagen 浪 Dan Presley 503-701-3871 danpresley@me. com n7...@arrl.net __ 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 arch...@mail-archive.com
Re: [Elecraft] KAT500 ANT1 problem
Don, Already gone and replaced... Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Don Wilhelm Sent: Sunday, July 11, 2021 17:07 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 ANT1 problem And discard those "Amazon Special" PL-259s. Use only quality connectors. It is not worth it to use off-spec connectors - you are witness to the pain and heartache they can cause. 73, Don W3FPR On 7/11/2021 4:52 PM, Dave wrote: > If it were me, I'd replace the SO-239 on the tuner... That way, you > know the issue won't come back to haunt you later. > > 73, and thanks, > Dave (NK7Z) > https://www.nk7z.net > ARRL Volunteer Examiner > ARRL Technical Specialist, RFI > ARRL Asst. Director, NW Division, Technical Resources > > On 7/11/21 1:48 PM, kd...@frawg.org wrote: >> Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your >> quick answers and for providing the schematic information. >> I pulled the unit and did some poke and prod testing with a DVM here >> on the anti-static mat. My fear was that K18 had a bad contact in the >> ANT1 position. -Not!- What had apparently happened was that I had a >> batch of the offshore made "Amazon Special" PL-259s that appear to >> have a slightly oversize center pin. >> The patch cable used until recently had one of them on one end. It >> had spread the leaves on the ANT1 SO259 just enough that a good >> connector, when perfectly centered and seated, did not make contact! >> Gentle recentering of the leaves with a miniature flat blade screw >> drive yielded relief and a self-administered head smack. >> Jack Spitznagel - KD4IZ >> Science River LLC >> Biomedical Consulting Services >> >> >> >> -Original Message- >> From: kirk.hard...@k6kar.com >> Sent: Sunday, July 11, 2021 14:07 >> To: kd...@frawg.org >> Subject: RE: [Elecraft] KAT500 ANT1 problem >> >> Jack, >> >> The KAT500 schematic is on line (partial) >> https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png >> https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png >> https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png >> Although all schematics aren't available, this may be enough to get >> you going. >> >> 73, >> >> Kirk, K6KAR >> >> -Original Message- >> From: elecraft-boun...@mailman.qth.net >> On Behalf Of kd...@frawg.org >> Sent: Sunday, July 11, 2021 12:38 PM >> To: Elecraft@mailman.qth.net >> Cc: 'Elecraft Support' >> Subject: [Elecraft] KAT500 ANT1 problem >> >> All, >> >> >> This is likely something very straight forward, but I do not have a >> schematic to follow and troubleshoot. >> >> Symptom: ANT 1 circuit seems to be dead. No match and fault on switch >> from >> ANT2 to ANT1. No receive signal. >> >> Tests: >> >> Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and >> will match normally with rig's internal ATU. >> >> With KAT500 back in line, selected each tuning position (AUTO, MAN, >> BYP) no >> difference >> >> With KAT500 still in line, ANT2 and ANT3 work nominally. >> >> Checks: >> >> Reset to factory defaults, restored last working Configuration, no >> change in above behavior. >> >> >> If I was a betting guy, I'd guess a relay or switching diode was open, >> however - no schematic, don't really know. >> >> Did I miss something >> >> >> >> Does this little beastie need to go back to the mothership? >> >> >> Thanks, >> >> Jack Spitznagel - KD4IZ >> >> Science River LLC >> >> Biomedical Consulting Services >> >> >> >> __ >> 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 kirk.hard...@k6kar.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.n
Re: [Elecraft] KAT500 ANT1 problem
Many thanks to Ken (K6MR), Joe (4X1RV), and Kirk (K6KAR) for your quick answers and for providing the schematic information. I pulled the unit and did some poke and prod testing with a DVM here on the anti-static mat. My fear was that K18 had a bad contact in the ANT1 position. -Not!- What had apparently happened was that I had a batch of the offshore made "Amazon Special" PL-259s that appear to have a slightly oversize center pin. The patch cable used until recently had one of them on one end. It had spread the leaves on the ANT1 SO259 just enough that a good connector, when perfectly centered and seated, did not make contact! Gentle recentering of the leaves with a miniature flat blade screw drive yielded relief and a self-administered head smack. Jack Spitznagel - KD4IZ Science River LLC Biomedical Consulting Services -Original Message- From: kirk.hard...@k6kar.com Sent: Sunday, July 11, 2021 14:07 To: kd...@frawg.org Subject: RE: [Elecraft] KAT500 ANT1 problem Jack, The KAT500 schematic is on line (partial) https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page1.png https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page2.png https://www.qsl.net/wb4kdi/Elecraft/KAT500/KAT500_RevA_page5.png Although all schematics aren't available, this may be enough to get you going. 73, Kirk, K6KAR -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of kd...@frawg.org Sent: Sunday, July 11, 2021 12:38 PM To: Elecraft@mailman.qth.net Cc: 'Elecraft Support' Subject: [Elecraft] KAT500 ANT1 problem All, This is likely something very straight forward, but I do not have a schematic to follow and troubleshoot. Symptom: ANT 1 circuit seems to be dead. No match and fault on switch from ANT2 to ANT1. No receive signal. Tests: Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will match normally with rig's internal ATU. With KAT500 back in line, selected each tuning position (AUTO, MAN, BYP) no difference With KAT500 still in line, ANT2 and ANT3 work nominally. Checks: Reset to factory defaults, restored last working Configuration, no change in above behavior. If I was a betting guy, I'd guess a relay or switching diode was open, however - no schematic, don't really know. Did I miss something Does this little beastie need to go back to the mothership? Thanks, Jack Spitznagel - KD4IZ Science River LLC Biomedical Consulting Services __ 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 kirk.hard...@k6kar.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 arch...@mail-archive.com
[Elecraft] KAT500 ANT1 problem
All, This is likely something very straight forward, but I do not have a schematic to follow and troubleshoot. Symptom: ANT 1 circuit seems to be dead. No match and fault on switch from ANT2 to ANT1. No receive signal. Tests: Took KAT500 out of line to by-pass tuner, antenna on ANT1 is OK and will match normally with rig's internal ATU. With KAT500 back in line, selected each tuning position (AUTO, MAN, BYP) no difference With KAT500 still in line, ANT2 and ANT3 work nominally. Checks: Reset to factory defaults, restored last working Configuration, no change in above behavior. If I was a betting guy, I'd guess a relay or switching diode was open, however - no schematic, don't really know. Did I miss something Does this little beastie need to go back to the mothership? Thanks, Jack Spitznagel - KD4IZ Science River LLC Biomedical Consulting Services __ 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 arch...@mail-archive.com
Re: [Elecraft] Controlling KAT500/KPA500 with Icom 7610
Buck, I have a similar setup with an IC-7300 and my KAT500/KPA500 combo. It does not auto band change before key up. It does change on a quick, low power tune however. IIRC I made a not so recent inquiry to Elecraft yielded the explanation that my experience was correct. If I can find the message I will post the text. As Ken WA2LBI indicated in his message, what I did subsequently was to jettison the "ICOM AH4 cable" set up (KAT500 Owners Manual, pg 8 to 10) and just used a generic Analog radio configuration. The frequency sensing capabilities of the ATU and amp do the job fast and efficiently. Currently I use a 4-way RCA audio switch to select the keyline sig from one of the HF radios I use and a remote antenna/rig selector (MFJ 4724) to route the selected rig to the amp. The KAT500 remembers my preferred HF antenna for the band I have chosen to use so the antenna side of the MFJ is used to switch other coaxial feeds. Jack Spitznagel - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Buck Sent: Monday, April 19, 2021 14:04 To: l...@lnainc.com; elecraft@mailman.qth.net Subject: Re: [Elecraft] Controlling KAT500/KPA500 with Icom 7610 I made up the cable from the Molex to the TUNE on the KAT500 as described and have checked continuity from end to end. All OK. I have the SEND from the 7610 connected to the PTT RLY on the KAT500. When I change bands, nothing happens. Is there another setting I need to change in the 7610? Buck, k4ia Honor Roll 8BDXCC EasyWayHamBooks.com On 4/19/2021 10:35 AM, Lyn Norstad wrote: > Buck - > > The KAT500 Rev D1 Manual, pages 13, 14 and 15 cover the Icom connections. > > The "AH4" cable (the one you're describing) powers the KAT500 and > controls the "Tune" function. If yours isn't doing anything, the > cable is probably defective. > > What else do you have connected? > > 73 > Lyn, W0LEN > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Buck > Sent: Monday, April 19, 2021 7:42 AM > To: elecraft@mailman.qth.net > Subject: [Elecraft] Controlling KAT500/KPA500 with Icom 7610 > > Anyone who has succeeded, I could use some help. The connection from > the 7610 molex antenna tuner jack to the "Icom in" jack on the KSAT500 > doesn't do anything. > __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
[Elecraft] KXPA100AT with non-Elecraft transceiver weird issue
To the group amplifier gurus: I have been (happily) using an IC-705 to drive my KXPA100AT or my KPA500 with virtually no problems for about 2 months now. Set up is an IC-705 driving either a KXPA100AT or a KPA500. The keyline to the amplifiers is a 1/8" stereo plug cable from the send/alc jack of the rig to an RCA plug on either amp. Mostly use other radio combinations, but occasionally I use the 705 plus amplifier combinations for simplex D-Star over HF (DV mode). The sole issue that has popped up is when using IC-705 for HF D-Star with the KXPA100AT (regardless of rig frequency). In DV mode and only when I have a transmit message set, on the initial key up the rig goes into continuous repeated transmit. This can only be interrupted by pulling the key line to the amplifier or shutting the rig off. When I disable the TX message, the rig and the amplifier behave normally in DV mode. The KPA500 does not exhibit this behavior. I would love to know what is going on here. Is it something which transmitting more data than the normal ID data packet that goes with D-Star voice data causes? It would seem so, but why does the combo continue to cycle into TX when the data is already sent? Truly odd, but fortunately I can avoid the problem by remembering to turn off the TX message. When the TX message is off, the amplifier behaves like a gem. The KXPA100 switching circuit is likely pin diode based as no relay sounds can be detected. This is not made clear in the Theory of Operation section of the user's manual and since there are no circuit diagrams provided, that can't be verified. I am forwarding this to Elecraft Customer Service as I understand that I will not be the first to make the observations. Thanks for the bandwidth! Jack Spitznagel - KD4IZ Science River LLC Biomedical Consulting Services __ 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 arch...@mail-archive.com
Re: [Elecraft] KPA500+KAT500 interfacing
Andy and Ken, Wonder if this could be adapted? https://www.youtube.com/watch?v=9_xMEbW8z28 KD4IZ Jack Spitznagel FM19oo -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Andy Durbin Sent: Thursday, November 19, 2020 13:49 To: Ken Winterling ; elecraft@mailman.qth.net Subject: [Elecraft] KPA500+KAT500 interfacing "I would like to see an IcomCI-V interface for the KPA500/KAT500 combination. " It probably wouldn't be too difficult to implement. I have seen code for a CI-V decoder and, once the required TX or RX frequency has been extracted, it would be easy to compute and send band to KPA500 and frequency to KAT500. No motivation here though and I don't know if anyone has published a suitable interface. 73, Andy, k3wyc __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] T1 Question
Jim, This is an interesting question. Eric and Wayne were authors of the design and updated the schematic (at least according to mine dated 2017). One of them may be able to tell us. The MCU type is listed in the schematic, but without knowing how big the memory block is, it is hard to tell what of the memory could be written to in the EEPROM area. Hopefully one or other will chime in and let us know. Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net <mailto:elecraft-boun...@mailman.qth.net> mailto:elecraft-boun...@mailman.qth.net> > On Behalf Of James Bennett via Elecraft Sent: Monday, November 2, 2020 12:15 To: Elecraft Reflector Reflector mailto:elecraft@mailman.qth.net> > Subject: [Elecraft] T1 Question The specs for the T1 QRP antenna tuner indicate "Tuning times (typical): 2 to 8 seconds for initial tuning; 1 to 2 seconds to re-tune from memory" and "Many tune-ups are saved for fast re-tuning" However, I can't find any documentation as to how many memories this thing actually has. Does anyone know? Jim / W6JHB __ 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 kd...@frawg.org <mailto:kd...@frawg.org> __ 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 arch...@mail-archive.com
[Elecraft] KPA500 low RX sig when amp is in OPER
All, My KPA500 amp, (#2208 kit built), was acquired used but well cared for. It has operated perfectly for several years until today. I was in QSO on 40M when the amp threw a fault and the signal strength of received signals dropped markedly. When I put the amp in standby, the signal strength of the received signals returned to expected levels. I do get a TX power indication appropriate to the drive level on keying up. This issue does not clear when the power is cycled. I have done a cursory RTFM and find there is not a circuit diagram in the manual nor a description of how to interpret the fault (beyond the plain text listings). I have not yet had the time to dig into the archives at Elecraft or look through the files on the website. If this "symptom set" sounds familiar and/or you can point me to where and how I could troubleshoot, I will be quite thankful. Best regards, KD4IZ Jack Spitznagel FM19oo __ 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 arch...@mail-archive.com
Re: [Elecraft] Seeking comments on Ham Expo from participants
Ham Expo is an "OK" idea for the "time of COVID", but not a replacement for the live convention or hamfest. I quickly found that the design of the virtual event does fit not my way of learning or operating. I will not specifically address the Elecraft presentations except to say they were much better than most. 1. A few "venues"/talks were great, too many were purely canned promo that I neither needed nor wanted hear again. Other talks were presentations rehashed. Overall there was a startling lack of really new content. 2. It was not possible to "walk around and discover" - the essential small businesses, the idea creators, hobby/business makers, and boneyard folks were not there. 3. Meeting people (particularly new people) in yet another virtual room is not the way to spend a weekend after weeks of Zoom and GoToMeeting teleconferences. Nothing meets the organized or chance in-person encounter. 4. "Influencer" style YouTuber blather really turns me off. I need something to think through and evaluate... unfortunately that has become a norm to some presenters. Many thanks to those who presented material designed to stimulate thought. 5. Commercial venues were "OK". The front end presentation was too "cartoony". Some MFG did better than others in their "in booth" presentations. The cartoony booths were inevitable result of low end virtual technology trying to look like real life... but virtual booths have been there in professional conference and trade show apps for years - it felt stale to me. 6. Agree with the many other comments about the "contest" style promotionals. Organizers need to "go back" to the registration lottery. Forced competition to participate is a symptom of the illness in "radio-sport" - when everything becomes centered on "bragging rights" the braggarts take over. 7. Person hardest issue to deal with was being asked sitting in front of a yet another computer screen for an additional 12 to 18 hours at the end of a rough online week. I have picked a few venues I heard were good and spent time listening to those. My Bottom Line: I won't bother next year without hearing of some significant improvements, particularly an added opportunity for interaction with presenters. Unfortunately mine is a generally negative assessment. The Real Bottom Lines: -How many of the participants actually stayed through during most of the active online event (or spent the 12-18 hours afterwards reviewing it). My guess is a small fraction of those who registered. -Did the sponsors see any significant ROI or did most of it go to the committee that put the Expo together and the virtual convention company that produced it. That last "real bottom line" will tell the tale and probably dictate the future of this event. Jack - KD4IZ __ 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 arch...@mail-archive.com
Re: [Elecraft] KXPA100 for sale
Sent you a personal email about this. Definitely interested. Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of John Zaruba Jr Sent: Thursday, May 7, 2020 23:50 To: Elecraft@mailman.qth.net Subject: [Elecraft] KXPA100 for sale Factory assembled KXPA100 with internal antenna tuner, includes KXPACBL (KX3 interface cable). Purchased new 9/2019. Just don’t use it very much and would rather have a new mountain bike to transport my KX3 to Parks On The Air (POTA) when things open back up. $1100 plus shipping to your QTH, PayPal and Zelle only for funds transfer. 73, John K2ZA __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] Headphones
Clay, Have to agree about OTE headphones. I am hearing impaired and have not found a "truly compatible" over the hearing aid solution. The best one for me so far is the Sennheiser S1 avionic headset (no longer available). I happened to have one from my flying days. It has the best TX and RX noise cancelling function I have found. It is a shame that Sennheiser did not continue them. I have not played with the Bose or LightSpeed sets since my early experience with both being too tight. I have used the Sennheiser PXC 550 II set with the Kenwood D74A BT feature and gotten good voice reports. They are also OTE and good for those of us with larger hat sizes, but did not work acceptably without taking off the hearing aids. They do work without a lot of BT lag so might be acceptable for CW. I never used either with my KX3. Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Clay Autery Sent: Friday, May 8, 2020 10:11 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Headphones My Sennheiser HD6XX are neither bulky or heavy, but over-the-ear from larger drivers generally produces better results all around. I have A/B tested over-the-ear, on-ear, and in-ear... On-ear, for me is the worst of all worlds. I use my in-ear wireless BLE stereo set when I am in a noisy environment or in the field. But there is simply no substitute for a proper set of OTE phones when you need to dig an audio signal out of a pack or out of the mud. My 2/100ths of a paper debt instrument posing as "money" 73, __ Clay Autery, KY5G (318) 518-1389 On 05/08/20 07:35, Barry wrote: > IUnless you're in a multi-op or noisy environment, why go with bulky, > heavy, over the ear models? > > I've used a Sony MDR-W08 for years. Appears that model is > discontinued, but there are similar ones. It weighs 1 oz(!) and cost > about $20 when I got them. Do a search and you'll find similar ones. > > Barry W2UP > > > > -- > Sent from: http://elecraft.365791.n2.nabble.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 > k...@montac.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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] Somewhat Shredded Memory
It means you are keying up. KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Richard Sent: Thursday, December 26, 2019 06:00 To: Elecraft Reflector Subject: [Elecraft] Somewhat Shredded Memory I mean the one in my head. I recently put my KPA500 back into service. Seems to work perfectly. However, I’m puzzled by what looks like a giant asterisk that appears in the little alphanumeric readout; I think it was when reading SWR, but I’m not sure. Can’t find a reference to this anywhere, not in the manual, not on the website, and not in the depths of Google. What am I seeing? What is it trying to tell me? Cheers for 2020! Richard Kunc ~ W4KBX __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] Applause for KPA-1500
And I will second Bob's comment about the KPA500/KAT500. In line with the "plays well with others" marketing theme about all of the Elecraft amps, it is a seamless and stellar performer with some of the ICOM radios. I use it with both the 7300 and 7100 here. ICOM's use of a "different" ATU interface language is not a help, but is also not a hinderance if you understand those differences. My antenna system has similar capabilities to what he describes. In my dreams... would be great to own a K4, but that will not happen unless I win the lottery... So I couldn't be more pleased with my used KPA500/KAT500 combo as I have been using them. KD4IZ Jack Spitznagel FM19oo -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Bob McGraw K4TAX Sent: Thursday, December 19, 2019 10:40 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Applause for KPA-1500 Bravo to that.Although I do not have a KPA1500, I do have a KPA500, KAT500, P3, and K3S. With three antennas connected to the KAT500 I easily work 160M through 6M as though I have a 500 watt transceiver and a broadband antenna system. Yes, it is a trouble free system and one that is a delight to own and operate. Thank you Wayne, Eric and the Elecraft staff. 73 Bob, K4TAX __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] The Future of Our Hobby
This discussion reminds me of how the parable, The Blind Men and an Elephant, fits our sacred hobby to a "T": https://en.wikipedia.org/wiki/Blind_men_and_an_elephant We are all "right" in a narrow sense but we are all "wrong" because our view points are so skewed by our perception of truth. We are each just "bloviating" when we hold forth on the subject. Have any of us ever tried to poll younger non-related and non-ham persons in a structured way? Probably not. Do we really understand: What "they" know/don't know about technical hobbies? What "they" know about amateur radio? Why it might be interesting or uninteresting to "them"? I don't think so. I have tried (unscientifically) to ask these questions of younger folk I interact with professionally without identifying myself as being "an older geek". I can't begin to categorize the answers because they are so varied. Introspectively, what I do see is one generation of an old civic (mostly men's) club in a panic because we perceive we are all dying off and there will be no one to "carry on". Our cohort is blind (well, maybe just really myopic) and are incapable of clearly seeing the whole truth... amateur radio is a very diverse but extremely niche hobby, it does not belong to a single interest group - not techies, talkies, first responders, contesters, physicists, space frontiersmen, or preppers. An awfully large group of people look at "us" as odd or funny old dudes... The media has never helped us much... Herman Munster? Come on. Mike Baxter? Really??? Ham radio is just a TV prop and usually used to poke fun at certain attitudes. OTOH the actual high value stuff we occasionally do is all too often relegated to 11pm local news as "filler" if it is reported at all. Who failed? Not even worth pointing fingers... we did. Embrace it, have fun with the hobby, chill, let the marketing departments at "IKY" and "China-Inc" figure out the sales pitch. We geeks will still be here in the future and some will be hams... and we'll line up for the latest widgets. Let's move on. 73 All, "Weird Uncle Jack" KD4IZ Jack Spitznagel FM19oo __ 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 arch...@mail-archive.com
Re: [Elecraft] KAT500 auto trainer
Bob, My experience has been the same as yours. Extremely easy to do manually and stable. Jack - kd4iz -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Bob McGraw K4TAX Sent: Saturday, December 14, 2019 19:40 To: Andy Durbin Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT500 auto trainer I didn’t find it a challenge at all. I started on 160M and finished on 6M all in about an hour. Those values are still good some 1 year later. It is really nice to operate 160M - 6M at 500W (except 60M & 30M) and only change the frequency on my K3S. Nothing tedious about that. Bob, K4TAX Sent from my iPhone > On Dec 14, 2019, at 5:40 PM, Andy Durbin wrote: > > Back on Dec 7th I posted "Popular wisdom is that KAT500 should be trained > for all frequencies in a band and then operated in manual mode. This is what > I do at my station but I find the training process to be a bit tedious and > I'm considering automating the training process." > > I now have a test version working. It currently has 2 functions: > > > 1. Sweep and Autotune - Set TX frequency and KAT frequency to center of > first bin of current band. When frequencies are verified then initiate > autotune and TX with autotune power. When tune complete advance to next bin > center frequency and repeat. > 2. Sweep and check SWR - Set TX frequency and KAT frequency to center of > first bin of current band. When frequencies are verified then TX with 5 W > for 2 seconds to allow a check of LP-100A indicated SWR or complex load. > Then advance to next bin center frequency and repeat. > > The tuning solution for first autotune pass seems to be rather poor > for some bins but it improves with a second or third pass. (I > understand the result depends on the power setting but there seems to > be more to it than that. Auto fine tune is enabled. ) > > My last autotune sweep of the entire 160 m band took 1 minute 10 seconds. > The check sweep took 1 minute 20 seconds. Check sweep time should be > constant but the time for the autotune sweep will be quite variable. > > A future refinement of the check sweep may be to set an SWR threshold and log > all frequencies that don't indicate better than that value. These would then > be presented in sequence for manual adjustment. > > So, still a work in progress, but appears to have potential. And yes, there > will be an option to CW ident after tuning each bin although my preference is > to minimize time on frequency. > > Andy, k3wyc > > > > __ > 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 > rmcg...@blomand.net > __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] DZOTA: Dead Zones On The Air
Love this idea Wayne! Thanks for the [poke]... This "event" fills a fun nee. It is not just for those "flat landers" who are close enough to get to the large DZs, but also to those of us living back east who live in those little pockets of territory that is not served by cell service. 5G??? Who are they trying to fool? Would be happy with 3G some days. Jack - KD4IZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Wayne Burdick Sent: Tuesday, December 10, 2019 09:46 To: Elecraft Reflector Cc: elecraft...@groups.io Subject: [Elecraft] DZOTA: Dead Zones On The Air Have you seen those cell-phone company maps showing how much of the country they cover? Inevitably, they reveal a patchwork of Dead Zones (DZs): places where coverage is not just bad...it's non-existent. In such inhospitable realms, your choices are smoke signals, sat phone, or ham radio. This smacks of an opportunity. Hence DZOTA. DZOTA places are often DeZerted. In fact, they are often in dezerts, in contrast to many of the conspicuous high places typical of SOTA. This may be a benefit to outdoor radio enthusiasts who, when hiking, prefer level ground or even a gentle downward slope. And in an emergency, those hikers might be the only ones around with comms. Where are the most notorious DZs? I have a few tiny cell network black holes in my urban neighborhood, thanks to AT But the truly inspiring DZs are far from civilization, covering tens or hundreds of square miles. Typically, they're also far from sources of noise. I have no illusions that DZOTA sites will be officially tracked and chased anytime soon. Still, the "NO SIGNAL" icon on my phone now has new meaning. It's a bug you, too, can change to a feature just by keeping a radio in your vehicle at all times. In my case, it's the spare KX2 and AX1 under the driver's seat. 73, Wayne N6KR __ 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 kd...@frawg.org __ 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 arch...@mail-archive.com
[Elecraft] KPA500/KAT500 remote utility apps
Wayne and Eric, Is there a possibility of creating/enabling a window position and size save function in a future revision of these two remote control apps. They works very well, but pop up in dead center of my "Screen 1" display on any fresh start. I use "Screen 2" for radio apps have not been able to figure a way to make them stay or return to where I want them. That small addition would be a big plus and should be a straight forward mod. Thanks for adding it to a "for consideration" list! KD4IZ Jack Spitznagel FM19oo One very happy KPA500/KAT500/T1 owner... -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Eric Swartz - WA6HHQ, Elecraft Sent: Tuesday, November 19, 2019 11:46 To: DAVID INGEBRIGHT ; elecraft@mailman.qth.net Subject: Re: [Elecraft] Disparity between KPA500 remote utility downloads Hi Dave, These are two different programs. The first one you show in the jpg, with less color, is the KPA500 utility, which is primarily designed for downloading code to the 1500 and reading back status etc in real time. It also has very basic remote control. The KPA500 Utility is downloaded from https://elecraft.com/pages/firmware-software under the 'Amplifier Firmware and Software' tab. The second 'more colorful' program you show on your webpage is the KPA500 Remote . It is the full featured remote control program for the KP500. The KPA500 Remote Software is downloaded from the same https://elecraft.com/pages/firmware-software page under the 'Logging and Control Software for the K-Line and KX-Line' tab. Eric /elecraft.com/ On 11/19/2019 7:28 AM, DAVID INGEBRIGHT wrote: > Attaching a couple of screenshots of two different KPA500 remote operating > screens, a plain one and a great one. I want to download the great one into > my l#2 win7 PC and cannot seem to get the one I want. Are there two KPA500 > remote utilities? > This is what I get upon downloading the KPA500 utility today..., a stripped > down gray and white panel showing the essentials of the amplifier parameters: > http://www.valhallatreefarm.com/WB7ELY/kpa500/kpa500A.jpg > A month ago I downloaded (what I thought was the same utility) and I got > this nice color, animated, easy to use remote screen. > http://www.valhallatreefarm.com/WB7ELY/kpa500/kpa500.htm > These were downloaded from the Electraft K line utility and firmware download > page. Could someone shed some light on this? > Thanks > //Dave WB7ELY > __ > 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 > eric.swa...@elecraft.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 kd...@frawg.org __ 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 arch...@mail-archive.com
Re: [Elecraft] Question
Eric, If you see some momentum for this, don't exclude the "other modes"... The rate of growth in DMR has been matched by the new activity on the other DV modes, so it might be better to go for an open solution. My suggestion is that you reach out to Jeff VE6DV and the folks at https://www.openquad.net/ who are very welcoming, and net friendly. They can provide you with a net time slot that is "multi-mode", ie. reflector, room, and TG, supporting the 3 major DV modes plus EchoLink, etc. Investigate at D-Star XRF757A, DMR BM TG 31012, and YSF US QuadNet Array, number 37099, Echolink WWARG Conference. Best and good luck. KD4IZ Jack Spitznagel FM19oo -Original Message- From: Eric Lanzl Sent: Thursday, March 28, 2019 20:35 To: Elecraft List Subject: [Elecraft] Question Hello members of the Elecraft forum. I was wondering if there might be an interest in requesting a DMR (digital mobile radio) talk group for Elecraft users. It might be nice to have a place to mee in a digital room. One can request a tg on the relatively new TGIF system. Anyway let me know what people think? If there is interest I will make a request for the tg.Maybe comments can be made here on the forum about the talk group. . Thanks, Eric WB(JNZ (also net control for the Elecraft sideband net) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] ICOM to KAT/KPA500 key issue resolved
To make a long story short: I found that some pins in the E100416 13 pin DIN connector to RCA cable were not making a solid connection. The pins and the metal ring-shield in the DIN are thinner than the ICOM supplied connectors. The DIN connector did not seat properly and would wiggle, breaking contact as placed. Apparently the HSEND line pin would not make contact at all in the IC-7100, but would make a tenuous contact in the 7000 and 7300. Replaced the adapter with a homebrew cable using an ICOM 13 pin pigtail and an RCA video cable I had lying around, the DIN seat is solid and the amp and tuner work fine on all three radios now. All things are now harmonious. Thanks to Cody at Elecraft for his quick response to my query! Hope my observations help another poor soul who mixes and matches his /her gear. KD4IZ Jack Spitznagel FM19oo __ 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
Re: [Elecraft] KPA/KAT500 Mystery Fail - solved
Thanks to some (kind advice and well deserved goading) from Mike, K6MKF and
Ken, WA2LBI – I worked out the issue – unfortunately the fix appears to be a
visit to ICOM repair if access to components is as bad as I fear.
For the general edification of other ICOM 7XXX owners:
Two KEY control lines go from the ICOM 7100 and 7300 rigs to the KPA/KAT500
combo.
1. The ICOM Molex connector KEY line is part of the TUNE/operate trigger
function to the KAT500 along with the START line.
2. Pin #3 (HSEND) of the 13 pin DIN connector is the KEY function used by
the KPA500 KEY line input. It is a bi-directional line.
Normally, HSEND appears to float at about 6 volts. If this line is pulled low
by external equipment, the transceiver is keyed. When the transceiver is keyed,
the line is pulled low, keying external equipment. Maximum line current 200ma.
This is what the 7300 was doing… so all was OK there but... My 7100 showed an
HSEND float voltage of 2.3V and did not drop to ground when the rig was keyed –
apparently the keying circuit is smoked. Looks like there is a diode in between
the circuitry and the connector (hope-hope). Not sure why this blew because
these puppies have been in use with the KPA500 and relatively trouble free for
a while from what I understand… probably operator error/shuffle static damage
on my part. Glad it wasn’t a KAT/KPA500 issue.
Thanks for your patience,
KD4IZ
Jack Spitznagel
FM19oo
From: Ken Winterling
Sent: Sunday, March 10, 2019 11:33
To: kd...@frawg.org
Cc: Elecraft Reflector
Subject: Re: [Elecraft] KPA/KAT500 Mystery Fail
Jack,
I assume the two cables you use are the RF coax cable and the PTT keying line,
correct? The keying line should connect from the rig, then to the KAT500, and
finally the KPA500. This allows the KAT500 to disable the keying for the
KPA500 during tuning or high SWR conditions.
It is possible that with moving the cables between the two rigs the keying line
cable has been damaged. I have seen this before where a cable works fine in
one jack but not in another. It is a matter of the cable being in just the
right position. If you rotate it slightly it goes OC (Open Circuit).
To simplify troubleshooting I would eliminate the KAT500 and plug the keying
line directly from the IC-7100 into the KPA500. Put the amp on a dummy load.
You said the '7100 doesn't key the KPA500. You can check the KPA500 display
for an asterisk (*) on the left side indicating that the amp is receiving a
keying signal (contact closure to ground) from the rig ('7100). If you do not
see that asterisk (*) then the amp is not being keyed by the rig. Try a
different cable to the rig.
If that doesn't work then try leaving the keying cable plugged into the amp and
unplugging the cable from the rig. Touch to ground the center conductor of the
end of the cable you removed from the rig. It should key the amp and show the
asterisk (*) in the display. If the amp keys with the cable grounded then it
it time to look at the keying jack/circuit of the IC-7100.
Let us know what you find.
Ken
WA2LBI
On Sun, Mar 10, 2019 at 10:28 AM mailto:kd...@frawg.org> >
wrote:
All,
I have been using the KPA500/KAT500 combo with an IC-7300 and an IC-7100 for
around a year now. They are cabled and configured as per the Elecraft device
manuals. The cabling is identical for the two transmitters (actually, I use
the same 2 cables for both). All has been working properly with both radios
until very recently. The amp and the tuner continue to behave properly with
the 7300.
The KAT500 continues to work perfectly with the 7100, however the
KPA500 no longer band switches when I change bands on the 7100 and key up.
In addition, the amplifier will not key. The 7100 still can put out full
power with the KAT500 in line. I have not changed any setting in any of the
3 devices to my knowledge. It is like the KPA500 has become deaf to the
IC-7100.
After switching back and forth and looking at all device settings, I am
baffled at this point! Is there anything in the way of rig to amplifier line
signals that could inhibit band switching by the amplifier but not by the
antenna tuner?
Thanks for your thoughts.
KD4IZ
Jack Spitznagel
FM19oo
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Re: [Elecraft] KPA/KAT500 Mystery Fail
Hi Ken, All,
Mike, N6MKF, sent me a direct email recommending that I try cleaning the
connectors. I followed his recommendations again. No joy.
The 7100 does not behave as a “generic” rig. Remember that the more recent
ICOM’s all use a 4 pin Molex for their ATU connection and have a 13 pin DIN
connector that has all the other coding data and audio on it. Please see the
cabling instructions on pages 8-10 in the KAT500 manual to see the wiring I use.
I checked the RF run: The coax cable is connected through an antenna switch to
the KPA500 which in turn runs to the ATU. If I by pass the switch, the behavior
is the same. AFAICT that path is fine.
The * (asterisk) does not show when the 7100 is keyed, so it appears that
either the 7100’s HSEND line in the 13 pin DIN or the KEY line in the Molex is
the issue. Basically the KEY line is the not the only key line signal… and
HSEND is “bi-directional” so that complicates things. I am not sure which one
is routed to the KPA (or if they interact somehow).
I know the KPA/KAT side is behaving as it should because they work with the
7300, so I will check both lines in both rigs and compare what they do when
keyed. Probably the only way to tell if something needs repair or a connector
is not making contact in the 7100.
Thanks for thinking this through with me.
KD4IZ
Jack Spitznagel
FM19oo
From: Ken Winterling
Sent: Sunday, March 10, 2019 11:33
To: kd...@frawg.org
Cc: Elecraft Reflector
Subject: Re: [Elecraft] KPA/KAT500 Mystery Fail
Jack,
I assume the two cables you use are the RF coax cable and the PTT keying line,
correct? The keying line should connect from the rig, then to the KAT500, and
finally the KPA500. This allows the KAT500 to disable the keying for the
KPA500 during tuning or high SWR conditions.
It is possible that with moving the cables between the two rigs the keying line
cable has been damaged. I have seen this before where a cable works fine in
one jack but not in another. It is a matter of the cable being in just the
right position. If you rotate it slightly it goes OC (Open Circuit).
To simplify troubleshooting I would eliminate the KAT500 and plug the keying
line directly from the IC-7100 into the KPA500. Put the amp on a dummy load.
You said the '7100 doesn't key the KPA500. You can check the KPA500 display
for an asterisk (*) on the left side indicating that the amp is receiving a
keying signal (contact closure to ground) from the rig ('7100). If you do not
see that asterisk (*) then the amp is not being keyed by the rig. Try a
different cable to the rig.
If that doesn't work then try leaving the keying cable plugged into the amp and
unplugging the cable from the rig. Touch to ground the center conductor of the
end of the cable you removed from the rig. It should key the amp and show the
asterisk (*) in the display. If the amp keys with the cable grounded then it
it time to look at the keying jack/circuit of the IC-7100.
Let us know what you find.
Ken
WA2LBI
On Sun, Mar 10, 2019 at 10:28 AM < > wrote:
All,
I have been using the KPA500/KAT500 combo with an IC-7300 and an IC-7100 for
around a year now. They are cabled and configured as per the Elecraft device
manuals. The cabling is identical for the two transmitters (actually, I use
the same 2 cables for both). All has been working properly with both radios
until very recently. The amp and the tuner continue to behave properly with
the 7300.
The KAT500 continues to work perfectly with the 7100, however the
KPA500 no longer band switches when I change bands on the 7100 and key up.
In addition, the amplifier will not key. The 7100 still can put out full
power with the KAT500 in line. I have not changed any setting in any of the
3 devices to my knowledge. It is like the KPA500 has become deaf to the
IC-7100.
After switching back and forth and looking at all device settings, I am
baffled at this point! Is there anything in the way of rig to amplifier line
signals that could inhibit band switching by the amplifier but not by the
antenna tuner?
Thanks for your thoughts.
KD4IZ
Jack Spitznagel
FM19oo
__
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[Elecraft] KPA/KAT500 Mystery Fail
All, I have been using the KPA500/KAT500 combo with an IC-7300 and an IC-7100 for around a year now. They are cabled and configured as per the Elecraft device manuals. The cabling is identical for the two transmitters (actually, I use the same 2 cables for both). All has been working properly with both radios until very recently. The amp and the tuner continue to behave properly with the 7300. The KAT500 continues to work perfectly with the 7100, however the KPA500 no longer band switches when I change bands on the 7100 and key up. In addition, the amplifier will not key. The 7100 still can put out full power with the KAT500 in line. I have not changed any setting in any of the 3 devices to my knowledge. It is like the KPA500 has become deaf to the IC-7100. After switching back and forth and looking at all device settings, I am baffled at this point! Is there anything in the way of rig to amplifier line signals that could inhibit band switching by the amplifier but not by the antenna tuner? Thanks for your thoughts. KD4IZ Jack Spitznagel FM19oo __ 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
Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna?
I love the AB7E concept... Looks an awful lot like birth of a new character for cosplay and a Comicon run to me: "EtherMan" - the RF belching steampunk simulacrum of an Isaac Asimov automaton! A little work with the 3D printer, an RPi with a 7" display, and some burnished 10 gauge wire coil gauntlets, chest shield flip down mount for the KX2. Ah the possibilities! KA6LMS doesn't stand a chance. Anyone want to give it a go? Seriously now, has anyone looked at the rf field issues - ie the effect created by the position of the person (a 70% water, protein gel matrix) with the backpack on? KD4IZ Jack Spitznagel FM19oo -Original Message- From: David Gilbert Sent: Wednesday, January 23, 2019 00:04 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Urban stealth HF: Inside-the-backpack loop antenna? Here's another idea. Run a wire inside your shirt from one cuff across your back and down to the other cuff. Wrap loading coils around each arm just above the elbow. Feed the "dipole" in the center at the back of your neck. I did a quick model (assuming your arms are held straight out) with 5.5 feet total length and 2200 inductive ohms for each coil, with each coil 30% from their respective ends of the wire. It "resonates" at around 14.15 MHz, but with only about 0.4 ohms real feedpoint impedance. I assume it would take some sort of extra matching network to bring that up enough that a KX2 with the internal tuner could drive it. Ignoring the effect of a person's arm, another quick calculation says that the arm coils would need to be roughly 11 turns of 10 gauge wire 3.5 inches in diameter ... unless I made a mistake, which is quite possible. It would bring new meaning to the term "compromise antenna", but I bet it would be more effective than a super small loop the size of backpack frame. 73, Dave AB7E > > > On 1/22/19 12:57 PM, Wayne Burdick wrote: >> I’ve engaged in plenty of ultralight HF pack operation, with a KX2, >> AX1 antenna and a dragged counterpoise. In wide open spaces it’s a >> blast. But urban settings with dogs, wire-eating cacti and >> overzealous Neighborhood Watchers can distract from one’s radio >> experience. >> >> So, just for grins, I’d like to try something completely incognerdo: >> no visible antenna. A small remotely tuned loop (say 12” diameter) >> would seem to be the best choice, as it would fit entirely inside a >> small backpack. It could have modest efficiency while not requiring >> a counterpoise wire. Rigid 1” copper pipe formed in a square would be >> convenient to deploy. >> >> The loop would be only 6 to 8” from soft tissue, so you’d want to run >> QRP, of course. OTOH, we’re talking about HF. A cellphone by your >> ear is probably worse. >> >> Any other antenna suggestions? >> >> Wayne >> N6KR __ 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 arch...@mail-archive.com
Re: [Elecraft] KX3 and RPi DRAWS hat?
Jeff and Joe, I am one of the DRAWS hat "early adopters". Yes, it will take some harness wiring but it was easy. The miniDIN6 cable wiring is pin to pin "IKYA standard". All that was needed was adapting the audio I/O wiring and either configuring flrig to key the radio model of choice or use the keying signal available on the miniDIN6 (they are wired to specific RPi GPIO pins). The flip side of the coin is that the implementation of the OS (Compass/Raspbian Stretch) and adapted software (including FT8 and JS8) is still being cobbled together and tested. I have Direwolf/Xastir APRS @1200 baud working reliably on all platforms (IC-7000, FT-817, and E KX3 with 2M card). 9600 baud APRS would be nigh on impossible with the KX3 (discriminator access). Digimodes with fldigi work fine with some tuning. Still working out some details for wsjt-x (but it does work). I am not a JS8 fan so you are on your own there. It is a true "swiss army knife" device - and like a swiss army knife, you can pretty much only use one blade at a time. I mounted the Pi and DRAWS in a SmartiPi Touch frame and adapted the case back with an 12V barrel connector, ON/OFF switch, and access port to the DIN and GPS SMA connector. Here are some photos of my "holiday project": https://www.dropbox.com/sh/4ayvgn1atzaihot/AAC8ElL148w9VjgfkyeODlAUa?dl=0 The keyboard you see is a wireless micro keyboard that came with my first RPi. The whole station using the KX3 or FT-817 fits in a Rigid "briefcase toolbox" or a medium sized Osprey daypack. By the way, the GPS is fast, accurate, and provides a PPS source for the RPi clock which is notoriously bad. Now the Pi tracks the Meinberg provided time on my main workstation here in the office. NW Digital wants to have their consumer ready unit - the OS Image, a custom metal case, and the second run of boards ready this month. It’s a fun project. KD4IZ Jack Spitznagel FM19oo -Original Message- From: Joe Lynch Sent: Wednesday, January 2, 2019 19:51 To: Thorpe, Jeffrey ; Subject: Re: [Elecraft] KX3 and RPi DRAWS hat? Me too, Jeff. I think it holds lots of promise for FT8. I have a steep learning curve, however. 73, Joe Lynch, N6CL On Wednesday, January 2, 2019 07:46:18 PM EST, Thorpe, Jeffrey wrote: I’ve been looking at one of Northwest Digital Radio’s DRAWS hats with my KX3. However, it uses 2 DIN-6 connectors. Has anybody tried one of these? Looks like it would require cobbling. Jeff - KG7HDZ __ 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...@sbcglobal.net __ 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 arch...@mail-archive.com
[Elecraft] Stupidity vs Absentmindedness - Was: Killed the KPA500 :)
Thanks Michael, Andy, and all for the original thread. It made me focus on proper use of my KPA500 which has really done a great job for me since I acquired it and a KAT500 over the summer. Retitled this message because I do not want to hijack/derail the original conversation. What I want to know... is there no repair for absent minded button pushing and thoughtless antenna positioning? So that I don't forget again... A hopefully instructional "mea culpa" follows: I have been using the IC-7000 for 2M APRS ops with a Diamond VX2000 vertical. Also have been experimenting with HF simplex D-Star and Free DV digital voice recently. The KPA500 has been instrumental for DV ops because of recent squirrely propagation... Mistake 1: Over the summer, I forgot to shut down the packet ops and ground 6/2/440 tri-band antenna while using a "nearby" halo with 350 watts 6M DV. That blew the 2M front end of the IC-7000. Matt at SARTS/ICOM in Michigan repaired it and I put together a protection relay circuit to ground the vertical if I forgot again. That should have solved the issue... Mistake 2: A relay contact was faulty (and I did not test it properly) and a month later, an adventure on 6M DV mode took the 7000 front end again! Matt was kind about fixing it ...again... Here I claim total stupidity along with absent mindedness - I rebuilt the protection circuit, tested it, it "seemed" to work fine... but it failed again a month later! Mistake 3: Failed, because I had removed the dummy load and *forgotten* to replace it along with a key ground strap, which again left the receiver 2M front end exposed. Kindly, Matt agreed to fix the 7000 a 3rd time... The 7000 will not go back into service until I have completely re-arranged the station set up because, to top off this comedy of errors... I totally ignored one basic issue: Original Mistake: the vertical and halo antennas were mounted on the same mast because "I never planned" to use them at the same time. This is where stupidity/laziness compounded with my absent minded operating practices to create the "perfect storm". Until I started using the KPA500, the halo antenna field strength was not such that the 7000's 2M receiver section was stressed by the signal strength from vertical, so I got complacent. Add in the KPA500 and smoke is let out of Q551 in the IC-7000. I am *sure* that no one on this group does this sort of sloppy engineering, but let it serve as a not-so-subtle reminder that a station layout should not be organically grown, but should be planned carefully with this sort of damaging interaction in mind. Enjoy the laugh at my expense. KD4IZ Jack Spitznagel FM19oo -Original Message- From: Michael Walker Sent: Monday, November 19, 2018 19:52 To: ANDY DURBIN Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Killed the KPA500 :) Knowing what I did while transmitting at 100 watts of msk144, I’m surprised the damage isn’t worse. The protection circuits did the best they could of. If you own any amp, you always need to be aware of the risk. I would never rely on the automation to 100% protected any amp. If you are worried about your amplifier and anyway I highly recommend you have checklist handy every time you turn it on and change Bands. Never depend on the protection circuits. I know I’m preaching to the choir too many people, however it is imperative you understand exactly how your amp works, how it’s wired, and how it interfaces with any HF radio. Mike va3mw Sent from my iPad > On Nov 19, 2018, at 6:45 PM, ANDY DURBIN wrote: > > "The support team at Elecraft got back to me and the required parts to repair > the board are on the way. Nice job guys." > > > But the question remains - Why didn't the designed-in protections work? This > new KPA500 owner would appreciate an answer from Elecraft. > > > Andy, k3wyc > > > __ > 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 > va...@portcredit.net __ 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 arch...@mail-archive.com
[Elecraft] KAT-500 interface cable question
Clint, I looked at that as a possibility, did a cursory look at an MFJ auto-tuner schematic, then decided that it was too easy to make one with spare parts and heat shrink. I would hate to spend $20 plus shipping - only to have to cut off the heat shrink on the MFJ cable, disassemble, do surgery to replace the Molex, and put on new heat shrink if I chose poorly. Using the home brew cable, my 7300 and 7100 both work well with the KAT500 which I use with a KPA500. Next projects will be to make a patching switch to pop between the two for when I do simplex DV on HF. I have not tried to use my KX3 with the KPA/KAT500 combo, but assume it would be easy. KD4IZ Jack Spitznagel FM19oo -Original Message- From: Don Wilhelm Sent: Friday, November 2, 2018 11:11 To: Clint Talmadge ; elecraft@mailman.qth.net Subject: Re: [Elecraft] KAT-500 interface cable question The wiring for the Icom AH4 Interface is detailed on page 8 of the KAT500 manual. Pin 4 of the Molex connector is connected to the shield (shell) of the T-R-S plug. I don't know how the MFJ cable is wired. BTW - there are no hyphens in Elecraft product designations, so it is the "KAT500" and not the "KAT-500". 73, Don W3FPR On 11/2/2018 10:45 AM, Clint Talmadge wrote: > New guy here with a question. I am about to get a KAT-500 to mate to > my IC-7300. In searching for the Molex connector I need to make an > interface cable for the radio to the tuner, I came across the > MFJ-5124I cable which MFJ sells to mate their 99* series auto-tuners > to Icom radios. The connectors on the tuner end are the same as used > on the KAT-500. The wiring is the same with one addition. Where there > is no ground connection from the sleeve of the 3.5MM stereo plug > specified in the KAT-500 manual, the MFJ cable has the sleeve connected to > the ground pin of the Icom connector. > Seeing the that the sleeve of the 3.5mm stereo connector on the > KAT-500 is chassis grounded anyway I think I can use the MFJ cable to > interface my > KAT-500 to my IC-7300. Does anyone see the flaw in my thinking? > (about the cable, not the radio) de W5CPT __ 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 arch...@mail-archive.com
