Nope, the Tim Conway reflector. Jack Spitznagel, DDS, PhD and KD4IZ... ;@) see: https://youtu.be/bfTyEtVIe84
Sent from my iPhone > On Nov 20, 2018, at 22:42, Brian Denley <b.den...@comcast.net> wrote: > > Is this the Tim Allen reflector? :o) > > Brian Denley > KB1VBF > Sent from my iPad > >> On Nov 20, 2018, at 7:45 PM, Fred VE3FAL <flesn...@tbaytel.net> wrote: >> >> In my years in the radio and electronics hobby I have learnt that the magic >> smoke wants out as well >> >> Fred >> VE3FAL >> >> Sent from my iPhone >> Fred VE3FAL/CIW649 >> >> >>> On Nov 20, 2018, at 19:40, John Simmons <jasimm...@pinewooddata.com> wrote: >>> >>> Ha! I would venture to say that anyone that says they haven't done this >>> kind of thing would be fibbing. I've blown up lots of stuff: >>> >>> * When I was in high school electronics class, I wired an AC power >>> switch in some long-forgotten transmitter in PARALLEL with the power >>> line instead of SERIES. Fuse? Nah. >>> * I built a Heathkit SW receiver. I swapped the germanium diodes for >>> the RF detector with the silicon diodes for the power supply >>> rectifier. This time there was a fuse. >>> * I've put many transistors in backwards. The transistors protect the >>> fuse. >>> * Many times I've tried to work the local repeater without remembering >>> to connect the antenna to the radio. I've done this both in mobile >>> and home stations. I've never blown a final, though. >>> * Another Heathkit was a vacuum tube voltmeter. I wired all of the >>> resistors on the 10 position range switch EXACTLY one switch >>> position off. >>> * I blew up a $200 LDMOS transistor for an HF amp. I recorded the >>> whole thing on video and posted it to YouTube. I STILL don't know >>> how or why the transistor blew. RF Parts was happy to sell me >>> another one though. >>> * I had an old pickup truck that I used only for snow plowing. Both >>> battery cables were black (don't ask why). Every fall I would put >>> the battery in to prepare for the season. EVERY fall I would hook >>> the battery cables up backwards. BZZZT! >>> * I built my own house while working 60 hour weeks at a two-way radio >>> shop. I did all the electric wiring in the house. The first circuit >>> I hooked up was for basement outlets. By mistake I used the cable >>> for the water heater for the outlet string. BANG! GFI outlets don't >>> like 240V. >>> >>> That's just the electronic stuff I can remember right now. We had the >>> kitchen floor replaced THREE TIMES because the pipe for the self-installed >>> dishwasher leaked. >>> >>> Don't feel bad. >>> >>> -John NI0K >>> >>> P.S. Many, many years ago there was an article in 73 Magazine written by a >>> ham claiming that being a klutz was his specialty. He gave lots of >>> examples, but the crowning one described how he put out a fire in his car >>> (which was in the driveway) with the liquid from his septic tank that he >>> happened to be pumping at the same time. I saved the article. Every time I >>> read it I get the giggles. >>> >>> kd...@frawg.org wrote: >>>> 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<va...@portcredit.net> >>>> Sent: Monday, November 19, 2018 19:52 >>>> To: ANDY DURBIN<a.dur...@msn.com> >>>> 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<a.dur...@msn.com> 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 jasimm...@pinewooddata.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 flesn...@tbaytel.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 b.den...@comcast.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
