[amsat-bb] APRS FD method

[Patrick STODDARD (WD9EWK/VA7EWK)]

Hi Greg!

If a Kenwood radio receives an APRS message without the request
for an ACK, it doesn't transmit anything back to the sending
station. The message is received, and the radio's screen
changes to alert the operator to the newly-received message.
I saw this all the time with those using UISS, since most of
those operators don't enable the ACK requirement for their
outgoing messages. If I'm remembering correctly, UISS will
send ACKs when a message is received with the ACK request,
regardless of the UISS ACK setting for outgoing messages.​
I don't know much of the program you mentioned; I never put
it on any of my Win10 tablets or Win7 laptop.

Yes, I could go with a computer in the field, and put the
radio into KISS mode to use with software as you mention.
I probably won't do that, since I expect I will need to
walk a short distance away from my HF setup to get a clear
view of enough of the sky to work the satellites. And once
I am out of the shade, the screen on a laptop or tablet
becomes harder to see, unless I put a box or some shade
over it. The displays on the TH-D72 and TH-D74 do better
in the bright light, and being able to work those passes
without a computer or tablet around is part of the fun for
me.

Hope to see/hear you on next weekend!





Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @WD9EWK or http://twitter.com/WD9EWK




On Sat, Jun 16, 2018 at 10:28 PM, Greg D <ko6th.greg at gmail.com> wrote:

> Hi Patrick,
>
> What I think you (and I) could do would be to not use the internal
> Kenwood APRS processing, but instead run the radio in KISS mode and use
> an external software client.  APRSIS32, for example, lets one do
> messaging without requiring the ACK, and I have it conveniently
> connected to my Netbook via Bluetooth (so no cabling / USB Serial port
> issues).
>
> But, I haven't tried it via satellite as yet...  Should probably do that
> this week :).  Not sure what would happen if the other station still had
> Acks enabled.  At worst I think you'd see several retries, depending on
> who started the conversation.  Haven't diagrammed that out.
>
> Good luck on Field Day!
>