[A-DX] Kiwi Server. Frage.

Christof Proft
Di Apr 28 15:22:27 CEST 2020


Am 28.04.2020 um 15:00 schrieb Rémy Friess:
> Aber was ist SAS ?

Synch AM-"Stereo". Dabei wird das untere Seitenband auf den linken, das 
obere Seitenband auf den rechten Kanal geroutet.

"FAQ — Operation

     What is the "Synchronous AM" (SAM) demodulation mode?
     As of software release v1.390 the Kiwi offers several versions of a 
synchronous AM detector for use with AM signals. The mode button toggles 
between a traditional double-sideband SAM detector and SAL and SAU which 
limit the passband to lower and upper sideband respectively. Use the 
keyboard shortcut 'A' to toggle the SAM modes.

     Sideband selection overrides the Kiwi passband, i.e. if you are in 
SAL mode then adjusting the Kiwi LSB passband lower limit works as 
expected. But adjusting the Kiwi USB passband is totally ignored by the 
SAL demodulator because it is filtering out the upper sideband.

     SAS offers a pseudo-stereo effect by routing SAL and SAU to the 
left and right ear exclusively. Note that SAS is a 2-channel mode like 
IQ so there is the same switching delay into and out of SAS as there is 
with IQ mode.

     While in SAM mode the PLL carrier offset is displayed at the bottom 
of the "Stats" tab on the main control panel. To demonstrate that the 
SAM PLL is working use SAM mode on an AM station tuned to the exact 
center frequency. The PLL carrier value should be a small value like +/- 
10 Hz or so. Then click roughly 1 kHz lower in frequency on the 
waterfall. You should hear the PLL carrier tone sweep as it re-locks to 
the station carrier. The carrier value will now display the roughly 1 
kHz offset value. When doing this the PLL will sometimes get unlocked. 
Especially if there is adjacent channel interference within the 
passband. To re-lock, tune to the station center frequency, switch to AM 
mode, then back to SAM. "
> Gibt es überhaupt irgendwo im Netz eine Bedienungsanleitung für den Kiwi ?