[amsat-bb] ISS Beacons

Rick Tejera saguaroastro at cox.net
Wed Apr 20 23:58:13 UTC 2016


When sending a CQ message, What call sign would you send to? I get how to
respond with user phrases or position comments, but how do you get that
first CQ out to whoever is listening?

Rick Tejera (K7TEJ)
Saguaro Astronomy Club
Thunderbird Radio Club
623-203-4121 (cell)
SaguaroAstro at cox.net

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Patrick
Sent: Tuesday, April 19, 2016 9:13 PM
To: amsat-bb at amsat.org
Subject: Re: [amsat-bb] ISS Beacons

Hi Mark!

You can do a CQ over the ISS digipeater, or just send something like
an APRS position packet or a packet with your position and a short
comment. If you use APRS messages, you can use them to make QSOs.
I just did that tonight for the first time in a few months,
working two Texas stations with my TH-D72A HT and Elk log periodic
from my driveway. Using the ariss.net wen site, I could see my
packets and most of my two QSOs captured by Internet gateways,
and a missed QSO with a California station. My TH-D72A will store
and display APRS messages, but freeform twxt typed into a terminal
program won't be displayed on my HT unless the text is formatted
as an APRS message. For example, a station could type this and (if I
receive it) have it displayed on my HT's screen and saved as a
received APRS message:

WD9EWK-9 :hello from (grid, city/state, etc.)

On my HT, I'd see the call that sent this message, and the text following
the space and colon that trail my call. This makes it easy for stations
using the APRS-capable radios, as well as software like UISS, to make
QSOs and both sides seeing the QSO happen.

It tends to be rapid-fire, since you only have up to 10 minutes in
an ISS pass, and there could be a lot of activity coming through the
ISS digipeater - especially the further east you go in the continental
USA. Passes that only touch the southwestern USA are really easy
for the low-power stations (like me) to get through. I do OK on other
passes that cover more of the country, even with only 5W.


Twitter: @WD9EWK

On Wed, Apr 20, 2016 at 1:23 AM, Mark Lunday <mlunday at nc.rr.com> wrote:

> <My first packet on an ISS pass always includes a CQ.>
> OK, call me ill-informed, I did not know you could do CQ and
> keyboard-to-keyboard QSO's.  I thought you could only send short messages.
> Is that how you do it?  The ISS pass is so fast...
> Mark Lunday, WD4ELG
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