[amsat-bb] ISS APRS in low power?

Gaston Bertels gaston.bertels at skynet.be
Sun Dec 14 07:27:49 UTC 2014


Formerly, ISS VHF transmissions were done with a Kenwood D-700, 
located in the Service module.
That rig went faulty and an Ericsson handheld is used presently. It 
is located in the Columbus module.
The D-700 had about 10 watt RF output.
The Ericsson has less than 5 watt.

There is a new Kenwood D-710 on board the Service module presently.
This rig has not yet been prepared with the usual channels for ARISS traffic.
But it will be used for the SSTV transmissions as announced.

73, Gaston - ON4WF

At 21:18 13-12-14, Pavel Milanes Costa wrote:
>Hi to all...
> From a few days now (3 actually) I have been monitoring the ISS 
> APRS digipiter, and seems to me that the power has been turned down 
> or equipment changed...
>Today I conducted a (long delayed) maintenance to my 3 antennas on 
>the back yard, two J-poles and the HF doublet...
>I was worried about the performance of my antennas, nope... SWR is 
>1.2 and lower on the two J-poles... and I can reach the usual local 
>and quasi-dx repiters in my area... (hombrew copper pipe J-Poles and 
>AH LDF-4 on both...)
>So, I'm right? ISS APRS equipment has reduced power?
>I remember working ISS APRS with this setup and signals was very 
>strong, now I have to open the squelch to hear something...
>73 from CO7WT.
>Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>to all interested persons worldwide without requiring membership. 
>Opinions expressed
>are solely those of the author, and do not reflect the official 
>views of AMSAT-NA.
>Not an AMSAT-NA member? Join now to support the amateur satellite program!
>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list