[amsat-bb] First Demo of ground-based LEILA-2 for the NB transponder

[George Henry]

There were more than a few stations that could have benefitted from that on 
Field Day...  heard AO-7 jump to mode A twice from being hammered too hard.

George, KA3HSW


----- Original Message ----- 
From: "Peter Guelzow" <peter.guelzow at kourou.de>
To: "amsat forum" <forum at amsat-dl.org>; "AMSAT-BB" <AMSAT-BB at amsat.org>
Sent: Sunday, June 26, 2016 5:43 AM
Subject: [amsat-bb] First Demo of ground-based LEILA-2 for the NB 
transponder


> First Demo of ground-based LEILA-2 for the NB transponder
> ====================================================
>
> the first geostationary P4-A satellite Es'hail-2 will carry two amateur
> radio transponders:
>
> - a Narrowband (NB) transponder with 250 kHz bandwidth and
> - a Wideband   (WB) transponder with 8 MHz bandwidth for Digital Amateur
> Television (DATV, DVB-S2 standard)
>
> The NB transponder is a bent-pipe, non-inverting, linear transponder
> with AGC.
>
>
> A LEILA-2 system, similar to LEILA flown on AMSAT OSCAR-40 (P3-D) will
> be used for Traffic Control and Telemetry Beacons.
> The mayor difference is, that this is a ground-based system which will
> be installed at the Es'hailSat Satellite Control Center (SCC) near Doha
> in Qatar.
>
> LEILA-2 will analyze the downlink power levels in the passband of the
> NB-transponder and automatically generate a Siren to remark users to
> decrease their uplink power.
>
> LEILA-2 is a joint development of AMSAT-DL's Achim Vollhardt DH2VA and
> AMSAT-UK's Howard Long G6LVB.
>
> LEILA is an german acronym for "LEIstungs Limit Anzeige", which means:
> Power Limit Indicator
>
>
> The following video gives a first insight to the Es'hail-2 LEILA-2
> hardware concept: https://youtu.be/v-9jVw-pK0A
>
>
> 73s  Peter DB2OS, AMSAT-DL
>
>
> _______________________________________________
> 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://www.amsat.org/mailman/listinfo/amsat-bb 


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus