Linux-Hams archive - August 1998: Re: scc driver and DCD on HF

Re: scc driver and DCD on HF

Joerg Reuter (terhi.victor@logonet.com)
Sat, 08 Aug 1998 23:20:26 +0200


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To: Tony Schonfeld <terhi.victor@logonet.com>
Cc: Linux Hams mail-list <kpdcfkas.ozlswn@ikm.no>, jreuter
From: Joerg Reuter <ptnt.uutyps@cyphersystems.com>
Subject: Re: scc driver and DCD on HF
In-Reply-To: Your message of "Sat, 08 Aug 1998 14:27:05 +0200."
<epfkwf@ulm.edu>
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> i wan't to know if it's necessary to use an external DCD decoder
> for HF trafic with USCC card and AM7911 modem ?
> the DCD software seem to be only detect noise from RX and not
> frame or tone activity.

Some thoughts:

Have you tried "softdcd on"? Which version of z8530drv are you
using? Are you sure the AM7911 decodes the AFSK tones correctly?
Can you check if it generates a DCD signal at all?

73,

Joerg Reuter http://poboxes.com/jreuter/
And I make my way to where the warm scent of soil fills the evening air.
Everything is waiting quietly out there.... (Anne Clark)

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