[aprssig] battery portable HF APRS?

Lynn W Deffenbaugh (Mr) KJ4ERJ at arrl.net
Wed Nov 27 08:47:43 EST 2019

JS8Call doesn't support periodically beaconing the GRID packet, but you 
can manually trigger it at will.  You could always try building your own 
modified copy to even do SmartBeaconing from a GPS feed!

I'm more keeping an eye on it for backwoods hiking uses, where you'd 
deploy an antenna and throw out a couple of GRID packets just to update 
the folks back home.

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

On 11/26/2019 9:16 PM, Ron VE8RT wrote:
> 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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