Re: [Elecraft] Fire in the house li-ion

Lithium ion batteries which are in a completely controlled charging and discharging environment, like in a phone or laptop, are generally safe. Well, except for the Samsung Galaxy Note S7. The best guess I’ve heard about that problem is that the various functions were so complicated and

Re: [Elecraft] Fire in the house li-ion

As Kevin, K4VD wrote: “Maybe I missed this in the thread but can someone cite an authoritative and maybe trustworthy source for Lithium battery safety? So many old spouse tales seem to have grown up around this technology.” And my answer is: Yes, I agree. The only things I have picked up on,

Re: [Elecraft] HF Antennas for KX3 Hand-Held/Hiking/Portable?

I haven't tried this with the MFJ whips. I used to have a 20 meter ham stick and by removing the metal whip the antenna resonated near 11 meters. By installing separate metal whips for 17 and 15 I had a 3 band whip antenna. So someone with a MFJ wjip may want to try this idea. Dr. Don W4BWS On

Re: [Elecraft] OT -- Ham radio operators contribute to protecting the Earth

Very interesting Phil thanks, but I believe there were far more VLF and MF transmissions back in the time period from 1900 to 1940 than there are today. For a long time it was believed that longer wavelengths (lower frequencies) were essential for long-range communications. That is why shipboard

Re: [Elecraft] OT -- Ham radio operators contribute to protecting the Earth

That's true...VLF! Those of us who served on ballistic missile submarines were part of the motivation for those megawatt-output coast stations around 15 kHz. But let's not forget all the localized radiation on VLF coming from hundreds of millions of TVs with horizontal sweep tubes and power

Re: [Elecraft] HF Antennas for KX3 Hand-Held/Hiking/Portable?

The 18xxt series whips have BNC connectors and can go right on the radio. They’re also smaller (13” collapsed) and easier to pack for hiking. > On May 18, 2017, at 10:10 PM, Jan Timmers wrote: > > Some people have suggested this item from MFJ will do the trick. > >

Re: [Elecraft] More data on my K2 problem

Woodie, In addition to your 15 and 17 meter problem (see my prior email), I have the following questions. Is that the maximum or minimum frequency? A few K2s need additional range for the capacitors around the crystal. If the frequency is too high, it is easy to lower it with a parallel low

Re: [Elecraft] HF Antennas for KX3 Hand-Held/Hiking/Portable?

Some people have suggested this item from MFJ will do the trick. http://www.mfjenterprises.com/Product.php?productid=MFJ-1620T is for 20m. They also have another for 17m. On Thu, May 18, 2017 at 3:41 PM, Chas H <2mysys...@gmail.com> wrote: > I am looking for HF antenna options (primarily 17m +

Re: [Elecraft] OT -- Ham radio operators contribute to protecting the Earth

No confusion — I just thought it was interesting and thought others would be interested. > On May 18, 2017, at 5:44 PM, John Marvin wrote: > > Perhaps you are confusing VLF with VHF? The article talks about VLF > transmissions. VLF is 3-30 Khz. There are no ham bands in

Re: [Elecraft] K2 Trouble - Help?

Woodie, You have apparently dialed the VFO from one band to another on 17m and 15m. The K2 VFO will not follow that much outside the ham bands (even thought the VFO display will change). The fix is easy - do a Direct Frequency Entry to a frequency within the ham band for both bands. Then

Re: [Elecraft] OT -- Ham radio operators contribute to protecting the Earth

Perhaps you are confusing VLF with VHF? The article talks about VLF transmissions. VLF is 3-30 Khz. There are no ham bands in that range. 73, John AC0ZG On 5/18/2017 6:23 PM, Phil Hystad wrote: I thought some other ham operators might like to read how they are helping to build a protective

[Elecraft] More data on my K2 problem

Took more measurements, Ref the K2 manual (Rev C) Pg 57, 58... - _4 MHz Osc Cal_: Setting C22 with well calibrated outboard counter, the counter at TP3 indicated 12,096.62. As close as C22 would adjust was a K2 display of

[Elecraft] OT -- Ham radio operators contribute to protecting the Earth

I thought some other ham operators might like to read how they are helping to build a protective bubble around the Earth. https://www.theatlantic.com/science/archive/2017/05/wow-guys/527193/ 73, phil, K7PEH __ Elecraft mailing list

Re: [Elecraft] dBV reading on Kx3

To expand on Lyle’s correct answer, the dBV reading is designed to be used as a relative measure. Read the description on page 22 of the KX3 manual. http://www.elecraft.com/manual/E740163%20KX3%20Owner's%20man%20Rev%20C5.pdf

Re: [Elecraft] dBV reading on Kx3

Nothing meaningful. First, read AFV and for a couple of readings to set the reference. Then go to dBV. dBV will then show you the difference in dB between the current signal and the reference. On a dummy load it'll bobble around a low value since it is just thermal noise and not a signal

[Elecraft] HF Antennas for KX3 Hand-Held/Hiking/Portable?

I am looking for HF antenna options (primarily 17m + 20m) that will work for hand-held portable while hiking with my KX3. Preferable something that will connect directly to the BNC jack on the side of the radio. I'll be hiking for 6 days in Glacier National Park and looking for practical

[Elecraft] dBV reading on Kx3

What should the dBV reading on the kx3 when it is connected to a dummy load, the agc is off, and no preamp? Mine shows +68.4 dBV John W7JJL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Fire in the house li-ion

Grant Youngman-2 wrote > Maybe … there are a lot of YouTube videos that show this type of bag being > totally destroyed by the contained batteries, flames shooting out in > spectacular fashion, etc. > > One guy in a video went so far as to build a “containment vessel” of > concrete blocks and

Re: [Elecraft] Fire in the house li-ion

Ouch, Fred! One of the standard airline emergency procedures for a smoking/burning/fizzing phone or other personal electronics is to submerge it in water or wrap wet towels around it to reduce the temperature and keep it from igniting nearby flammable materials. It's my understanding that

Re: [Elecraft] Fire in the house li-ion

Maybe … there are a lot of YouTube videos that show this type of bag being totally destroyed by the contained batteries, flames shooting out in spectacular fashion, etc. One guy in a video went so far as to build a “containment vessel” of concrete blocks and cement board for a lid. IMHO, if

[Elecraft] K3 NEW BETA FIRMWARE AVAILABLE !

I just downloaded from ftp://ftp.elecraft.com/K3/firmware/beta the new beta firmware 5.60 and installed it on my K3S.As usually all worked very well immediately.Great Elecraft, thanks Wayne Eric!Ian IK4EWX __ Elecraft mailing list

Re: [Elecraft] Fire in the house li-ion

N0CE wrote: /"I’d like to know more about the bag someone mentioned"/ 744 hits for "fireproof charging bag lipo":

[Elecraft] K2 Trouble - Help?

I sent the note below to support, but thought I would also post here. It has been working fine for years. Opened the case to do an alignment and developed a problem. Anyone on the reflector have a suggestion? I have an elderly K2 (S/N 02600) that had been

Re: [Elecraft] Fire in the house li-ion

I was using a tiny Li-Poly pack about the size of a small matchbox that I got from the local RC model store with my KX1 when it began to smoke. Fortunately,I had it on a pigtail, was out on the deck in a Spartan Sprint, and could unplug it and fling it over the railing to the gravel driveway.

Re: [Elecraft] Fire in the house li-ion

I'm not sure how much I would trust the temperature strap. Certainly not enough to leave it charging unattended. These things, from what I see on Youtube, start their reaction on the inside and violently explode. I am not sure reading case temperatures would give warning soon enough. Maybe I

Re: [Elecraft] Fire in the house li-ion

I crashed an r/c helicopter in one of the gyms at the school district where I work. The battery pack did burst in to flames as Jessie KB7PSG can attest. It was kind of scary. __ Elecraft mailing list Home:

Re: [Elecraft] Fire in the house li-ion

I took an old LiIon battery pack out into the back yard, and from a safe distanc shot it with a pellet gun. In short order it began violently venting gases and gray smoke, no doubt at a very high temperature. I didn't see flame, but it was daylight and maybe too bright. It made a big impression

Re: [Elecraft] Fire in the house li-ion

Was the fire a result of the lithium battery or leaving a charger unattended while charging? I am not sure, but the charger I have has a temp probe that gets strapped on the LiFePo4 battery pack, and monitors it during the charging (in addition to balanced charging). It is a sad event, that is

Re: [Elecraft] [KX3] New KX2 feature: Internal logging of outgoing CW/data text

Nice feature, count me in too, Wayne! Tnx es 72, Peter Op 2017-05-18 om 16:43 schreef rich hurd WC3T: Hi Wayne, You may add me to the "KX3 interest" pileup (or pile-on depending on your perspective. Hi hi.) __ Elecraft mailing

Re: [Elecraft] Fire in the house li-ion

Thank you very much for this advice. I have often heard of fires due to Li-on batteries, but I have no idea of the nature of the ‘fire’. In other words, do they burn, or do they explode scattering ignited fragments. Knowing this would help in finding a safe container for charging them. It

Re: [Elecraft] Charging the KX2 battery with solar

> On 18 May 2017, at 17:19, Christopher Hoover wrote: > > No reason you can't interface an external solar charge controller to the > battery. The specific charger that was linked to is for a different battery chemistry though (LiFePo4), which has a different voltage

Re: [Elecraft] [KX3] New KX2 feature: Internal logging of outgoing CW/data text

Hi Wayne, You may add me to the "KX3 interest" pileup (or pile-on depending on your perspective. Hi hi.) On Wed, May 17, 2017 at 4:03 PM, Wayne Burdick n...@elecraft.com [KX3] < kx3-nore...@yahoogroups.com> wrote: > > > Logging of casual QSOs can be inconvenient when you're using the KX2

[Elecraft] Charging the KX2 battery with solar

>From Bioenno's own website on this particular charge controller: "This solar controller is intended for 12V LiFePO4 Batteries Only" https://www.bioennopower.com/products/12v-24v-20a-solar-charge-controller-mppt-for-lifepo4-batteries LiFePO4 batteries are not Li-Ion batteries. 73, John AE5X

Re: [Elecraft] New KX2 feature: Internal logging of outgoing CW/data text

Hi Wayne, fantastic information! I think last Year during HAM Radio in Germany I was discussing this with Eric and there You go :)I'm also interested in having this on KX3 even if since I have KX2 the KX3 is more station transceiver it would really simplify logging process for occasional