[amsat-bb] ISS Beacons (message - correction)

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Wed Apr 20 16:33:11 UTC 2016


Thanks for the correction! I was not aware of the colon that goes
before the call sign. I have also corrected my QRZ.com page, to
include that colon. This allows anyone who uses a simple terminal
program to send APRS messages, and not just those using programs
like UISS or the APRS-capable radios like the TH-D72A I use (and
used last night for a couple of quick QSOs via the ISS digipeater).


Twitter: @WD9EWK

On Wed, Apr 20, 2016 at 4:06 PM, Robert Bruninga <bruninga at usna.edu> wrote:

> Correction:  The format for a manually typed APRS message to be captured
> by an APRS radio's front panel is a colon, then a 9 byte callsign field
> (padded with spaces) and then another colon and text.  The example should
> have been:
> :WD9EWK-9 :hello from (grid, city/state, etc.)
> This does not include a line number intentionally, because a line number
> forces an automatic ACK and that just adds collisions and congestion on
> the ISS digipeater channel.   Bob, WB4APR

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