Re: [Elecraft] HI SIG Error on K3
Ah yes, q8 and it's good friend Q9 motto of the french revolution (Liberté, égalité, fraternité) is inherently an oxymoron. > On Jan 17, 2017, at 6:56 PM, K4MWB wrote: > > Returned K3 to Elecraft and they fixed the "HI SIG" problem by replacing Q8 > and Q9 on the RF Board. > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/HI-SIG-Error-on-K3-tp7624479p7625858.html > Sent from the Elecraft mailing list archive at 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 phi...@mac.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
Re: [Elecraft] OT - Neumann vs. Heil Michrophone
The Neuman's may well pass on all the details of audio in your shack BUT they will also pass on one of the most beautiful vocals as well. I say try it and see how good it can be. Don't forget to EQ! Phil K5SSR What me worry? > On Dec 20, 2016, at 11:15 PM, Gary Smith wrote: > > David, > > I have two TLM 103 and they are a decent > albeit not fantastic studio microphone. > There is no way I would ever see it > sensible to use them on Ham Radio as the > off axis response they bring to the table > will pick up every sound in your shack and > that will pass right along into your > transmission. > > If you ever had a fan running in your > shack or an irate significant other > anywhere in the house, everybody would > know it. > > A poor choice for a communications rig. > > 73, > > Gary > KA1J > >> I have my ESSB and AM higher fidelity hat on. Seeking opinions on the >> Heil PR 40 vs. the Neumann TLM 103. >> >> David Ahrendts, KK6DA, Los Angeles >> >> >> >> David Ahrendts davidahren...@me.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 g...@ka1j.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 phi...@mac.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] Magnetic Loop question
Are mag loop antennas very directional? Are mag loop antennas a little directional? Are mag loops kinda directional? So which one? Phil K5SSR What me worry? > On Oct 19, 2016, at 9:42 AM, Richard Fjeld wrote: > > This is a follow up to recent post from someone in California who > noticed less output when operating in below freezing temps. > > In the thread that followed, I mentioned the relationship of cold to > gain and biasing to prevent > thermal runaway. My last ARRL Handbook is a 2009 edition and 'Thermal > Runaway' can be found > in the index. You may find it interesting. > > Dick, n0ce > > -- > > > __ > 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 phi...@mac.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
Re: [Elecraft] Speakers - Optimal Frequency Range?
Love the the Ety's in the ear with the custom ear molds. They are very comfortable too. And block out EVERY THING! What me worry? > On Oct 17, 2016, at 9:15 PM, Jim Brown wrote: > >> On Mon,10/17/2016 7:56 PM, Ron D'Eau Claire wrote: >> Of course the room in which the speaker is used has a huge effect too. > > When you're sitting right in front of a loudspeaker you're in its near field. > That causes what you hear to be dominated by direct sound from the > loudspeaker. The loudspeaker(s) excites the room, but you're so close to the > loudspeaker that you don't hear the room response. Most recording studios > have a pair of high quality loudspeakers mounted on top of the console for > exactly that purpose. They also have a larger pair that DOES excite the room. > >> I dread to think we'd require anechoic chambers for Hamshacks! > > Anechoic chambers are TEST environments, they are lousy listening > environments. > >> On Mon,10/17/2016 7:26 PM, Doug Person wrote: >> A good audio setup will amaze you when you talk to another properly adjusted >> radio with a good microphone. > > All it takes for excellent receive sound quality is a decent pair of > headphones. The CM500, Sony MDR7506, and Etymotic Research ER4 are excellent > choices. There are other good choices, but these are well established, widely > available, and not expensive. All are VERY comfortable for LOOONG contest > weekends (although comfort in the ER4 depends on matching the ear piece to > your ear). > > 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 phi...@mac.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] Fwd: [New post] Ebike charging for long Battery life
What me worry? Begin forwarded message: > From: ElectricBike.com > Date: September 14, 2016 at 7:33:55 PM MDT > To: phi...@mac.com > Subject: [New post] Ebike charging for long Battery life > > > New post on ElectricBike.com > > > Ebike charging for long Battery life > by Eric Hicks > ] > Ebike charging for long Battery life > > > So you want your battery to last a long time….remember that most people will > not ride their ebike 500 times in their lifetime….500 charges is the typical > lifespan of a 18650 ebike battery…. And 500 charges will take nearly anyone a > long time to get through….. So our first advice is not to worry about it and > ride it like you stole it. By the time your ebike battery is used up, there > will probably be some amazing technology around and you will want to replace > your old clunky battery anyway. Also most people will damage their ebike > battery from abuse (dropping etc) way before they use it up from natural wear > and tear. > > However it has been theorized that you can get up to double the life of your > batteries expected life, by taking care when charging. > > Simple Rule To Remember > > > Lithium batteries like to stay cool. If you want to make your battery last a > long time do not let it get hot, either in discharge or when charging. How to > tell if you battery is getting hot? just use the finger test and just put > your finger on it. Warm is ok…. Hot to the touch is bad and you are > shortening the life of your battery when you get it hot. > > Always Charge Slow When You Can > > > Ebike batteries prefer to be charged slowly…. The smaller the pack in amp > hours the slower they like to be charged. If you are concerned with battery > life don't buy the highest amperage charger you can find….just stick with a > low amperage (2-3 amps) charger, or go with an advanced smart charger which > can charge slow or fast with the turn of a knob. It's always good to charge > slow unless you are in a rush. (read more on the benefits of slow charging > here) > > When to charge? > > > You do not have to charge your battery after every ride…. These are not old > school lead acid packs that if you forget to charge you will shorten the life > of your pack…. Lithium batteries only need to be charged when needed. > > Where to charge? > > > All large lithium batteries are a potential fire risk and should be charged > in a safe place, preferably outside or in the middle of a garage floor Other > safe ways to charge an ebike lithium battery are in a fireproof bag, oven or > barbecue grill. (read this article on safe charging) Do not attempt > charging a battery you think is damaged. > > Never charge a lithium battery unsupervised inside a house or building. > > 80 90 100 percent Advanced Chargers > > > Consider buying a smart charger that will automatically automatically charge > your battery at 80, 90 or 100 percent, and only charge to 100 percent when > you are planning long ride. > > Chargers that do this include the Satiator and the Luna Advanced Charger. > > We know from research done by the auto industry that batteries live longer > lives when not charged to 100 percent every time ….but at the same time you > should charge your battery to 100 percent at least once in a while to ensure > its balance charged. > > Watch our video on the Luna charging station pictured above. > > Balance Charging an Ebike Pack > Balance charging is a function that is controlled by more advanced bms (read > article on bms) . What it does is when the battery has reached its peak > charge, the cells will slowly be balanced so each line of cells are at the > same voltage….this not only extends the range of your pack, it also extends > the life expectancy. Modern name brand 18650 cells are very good at staying > in balance, but should be charged to 100 percent once in a while to ensure > proper balance is kept. > > Know your high voltage cut off limit > Always use a charger that is designed for you pack. If you use the wrong > charger you not only risk the long life of your pack it can also become a > fire hazard. Make sure the charger’s maximum voltage matches the maximum > voltage of your pack. Here is an example of maximum charge voltage for > 18650 battery packs. If you do not know what your batteries maximum voltage > is find out...and write it on a label on the battery so you never forget. > > Here is an example of maximum voltages for popular luna cycle 18650 packs > > 10s (36v) - 42v max voltage > > 13s (48v pack) - 54.4v max voltage > > 14s (52v pack) - 58.8v max voltage > > Know your low voltage cut off limit > Knowing what your high voltage cut off and knowing what your low voltage cut > off is the clear way that you will start to understand your pack and how to > maximize its life, and also how to maximize your range when you need it. > > High voltage cut off > > Here is typical low voltage cut off of s
