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LF: update on 'reeiving on 137 kHz'

To: rsgb_lf_group@blacksheep.org
Subject: LF: update on 'reeiving on 137 kHz'
From: "Soegiono, Gamal" <soegiono@nm.hsd.utc.com>
Date: Mon, 24 Jan 2000 12:18:11 +0100
Reply-to: rsgb_lf_group@blacksheep.org
Sender: <majordom@post.thorcom.com>
Dear LF friends,

few details to add to my last message:

ADC is actually a 18 bit resolution (Burr-Brown)
DSP uses 16 bit for calculation
DSP-1 determines the final IF BW and demodulates
DSP-2 does noise-reduction and notch filtering

To Dave Brown:

The receiver has one discrete attenuator of 40 dB
which is switched into the signal path as soon as
the input level reaches or exceeds +10dBm (10mW into 50 Ohms), and while the receiver is switched OFF.
The mentioned -102dBm level was measured
with 50 Hz bandwidth.


Best 73 de Gamal Soegiono

soegiono@nm.hsd.utc.com
or
soegiono@nmex01nt.hsd.utc.com







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