[SCCC] Portable Laptop for Field Use with KX3

[Dennis Vernacchia]

Be care with voltage converters...if they use switching power supply
circuits, they can put out RFI and thrash your receiver

73 Dennis N6KI


On Sun, Nov 1, 2020, 5:34 PM Bruce Horn <bhorn at hornucopia.com> wrote:

> Hi,
>
> Looks like there are 12V to 19V DC-DC converters available for powering
> laptops. Here's a recent review of one:
>
>
> https://diycamperconversion.com/12v-laptop-car-charger-powering-laptop-without-inverter/
>
> 73 de Bruce, WA7BNM   (bhorn at hornucopia.com)
>
> ----- Original Message -----
> From: "Paul Gordon N6LL" <n6ll at pacbell.net>
> To: "SCCC Reflector" <sccc at contesting.com>
> Sent: Sunday, November 1, 2020 5:26:12 PM
> Subject: Re: [SCCC] Portable Laptop for Field Use with KX3
>
> Hi David,
>
> I'll be interested in what you learn about laptops. I've heard that some
> will work on "12 V" even though their wall wart makes 18 to charge the
> internal battery.
>
> "Ruggedized" laptops may have brighter screens for use in police cars,
> or in the field. I think a Kindle-type screen would be interesting,
> though too slow for most uses. Maybe as an external display?
>
> Get a USB to Elecraft cable from Elecraft. (I have a spare you could
> try.) It carries the frequency data.
>
> I use a K1EL keyer to key the transmitter. It translates USB 8-bit
> alphanumeric to open collector cw code. Theoretically, fast modern
> computers don't need the K1EL, but then you'd need a USB to RS-232
> converter. See N6TV.
>
> 73
> Paul N6LL
>
>
> On 11/1/2020 4:46 PM, David Hodge wrote:
> > Hello, All.
> >
> > Does anyone have experience with DC externally powered laptops or
> tablets for field use?
> > I would like to get something that can be powered from a car battery or
> LiFePo battery, 12 to 14 Volt range.
> >
> > The corollary question is how to interface it with a KX3.
> >
> > Transcribing paper logs is getting old.
> >
> > Thanks in advance for any ideas/leads.
> > David N6AN
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>
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