[aprssig] battery portable HF APRS?

[Ron VE8RT]

Hi Lynn,

   a few months ago I ran JS8Call on a Raspberry Pi 3, I was very happy
with how well it worked.  And I had thought about using it as an
alternative to APRS.  I will take a look at the latest version, the
earlier version I thought that it would allow beaconing for a set
amount of time before going into receive only mode.

   Ron VE8RT

On Mon, 25 Nov 2019 13:59:28 -0500
"Lynn W Deffenbaugh (Mr)" <KJ4ERJ at arrl.net> wrote:

> 
> JS8Call has support for GRID (up to 12 character) transmissions and 
> every suitably configured JS8Call receiver can convert these reports 
> into APRS packets to the ARPS-IS.  I haven't seen any "portable" (read: 
> micro-controller) encoding code for JS8Call, but I suspect it would be 
> just as possible as the WSPR encoder code was.
> 
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
> 
> On 11/24/2019 9:53 AM, Ron VE8RT wrote:
> > GM Matthew,
> >
> >     I have a BITx40 I built, and was considering it, but either I messed
> > up and can no longer find them online (haven't tried the auction sites
> > though) or they're no longer available new.  As the QRP Labs monoband
> > QCX line of very affordable and highly rated CW transceiver kits will
> > also do WSPR I would have been very happy to have the (proprietary)
> > code include APRS transmit and then add an external board for the
> > decode transmitter control (or logic).  It has been suggested, maybe
> > I'm too impatient, that I wait for the QSX SSB capable model and use an
> > off the shelf TNC for HF.
> >
> >       Ron VE8RT
> >
> > On Sun, 24 Nov 2019 00:49:13 -0600
> > Matthew Chambers <mchambers at mchambersradio.com> wrote:
> >
> >> Have you looked at any of the ubitx kits? Those come in multi and mono band
> >> versions, and you can turn off the display to save some battery. Also they
> >> don't come with a case so you can mount the board in whatever case you want
> >> and even mount the TNC board along with the radio.
> >>
> >>> On Sun, Nov 24, 2019, 12:22 AM Ron VE8RT <ve8rt at yknwt.ca> wrote:
> >>>
> >>>> The FT817 or FT818 has been recommended, and I could see it working out
> >>>> OK for some situations.  If the station were a bicycle mobile on the
> >>>> annual Yellowknife to Hay River event the proposed FT817, and its
> >>>> batteries would take up valuable space and add significant weight. (no
> >>>> place to charge batteries, there is litterly nothing but wilderness for
> >>>> long stretches of 150 miles or more).  For an event like this I'd
> >>>> really like to have an APRS frequency on 60M where NVIS is possible.
> >>>>
> >>>> What I was hoping to find was a 5W or higher output transceiver, that
> >>>> was lightweight, easier on batteries, and relatively inexpensive. Along
> >>>> the lines of the no longer available PSK20 from Small Wonder Labs.  A
> >>>> monoband transceiver would do to start with, along with a basic tracker
> >>>> interface, just to experiment with.
> >>>>
> >>>> Maybe there are no suitable current production radios or kits.
> >>>>
> >>>>     Ron VE8RT
> >>>>
> >>>> On Sat, 23 Nov 2019 22:27:30 -0500
> >>>> "wa4zko ." <wa4zko at gmail.com> wrote:
> >>>>
> >>>>> Ron,
> >>>>>
> >>>>> More than a few options out there, but I use:
> >>>>>
> >>>>> RADIO:  Yaesu FT-817ND/818ND
> >>>>>
> >>>>> TNC:  SCS Tracker DSP TNC - flexible (10-20v) voltage requirements,
> >>>> draws
> >>>>> next to no power (<100 mA), 5 packet modes in one small box well suited
> >>>> to
> >>>>> portable/mobile setups. It can run as a stand-alone tracker (no
> >>>> PC/laptop
> >>>>> required) or with a lot of the common APRS software programs.
> >>>>>
> >>>>> GPS - Garmin GPS76CSx, a 3-wire "hockey puck" GPS or tap into NMEA out
> >>>> on
> >>>>> some of my other gear. Many GPS options out there and the latest rev of
> >>>> the
> >>>>> SCS Tracker TNC's GPS port can even power some of them for you.
> >>>>>
> >>>>> POWER: Rig's internal power or an external power/battery pack. I've had
> >>>>> great luck with the Bi0enno LiFePo battery packs.
> >>>>>
> >>>>> HF ANTENNA: Pick your poison, lots of options for portable HF antennas,
> >>>>> some suck slightly less than others LOL. I do okay with just a $20
> >>>> hamstick
> >>>>> for mobile and a dipole or end-fed halfwave wire when camping/etc.
> >>>>>
> >>>>> Have taken the above on the road and into the backcountry as needed.
> >>>> This
> >>>>> provides me with my choice of:
> >>>>> Robust Packet APRS (HF)
> >>>>> 300 baud APRS (HF)
> >>>>> 1200 baud APRS (2m and 6m)
> >>>>> 9600 baud APRS (typically on 70cm) (FT-817/818 do 9600 just FB)
> >>>>>
> >>>>> Jerry VE6AB does some similar stuff and written a lot about his portable
> >>>>> ops in QST and his blog. Check him out on QRZ.
> >>>>>
> >>>>> GL & 73
> >>>>> Jeff
> >>>>> WA4ZKO
> >>>>
> >>>> --
> >>>> Ron VE8RT <ve8rt at yknwt.ca>
> >>>>
> >>>> _______________________________________________
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> >>>> aprssig at lists.tapr.org
> >>>> http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org
> >>>>
> >
> 
> 
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-- 
Ron VE8RT <ve8rt at yknwt.ca>