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To : PSK31@WW.SYD.NSW.AUS.OC
De: Psk31 Digest <owner-psk31@aintel.bi.ehu.es>
Para: <psk31-digest@bipt106.bi.ehu.es>
Asunto: Psk31 Digest V1 #285
Fecha: miércoles 12 de enero de 2000 4:19
Psk31 Digest Wednesday, January 12 2000 Volume 01 : Number 285
In this issue:
Re: [psk31] DigiPAN performance with noise ?
[none]
See the end of the digest for information about psk31-digest
----------------------------------------------------------------------
Date: Tue, 11 Jan 2000 07:06:48 -0500
From: "Robert Lay" <w9dmk@crosslink.net>
Subject: Re: [psk31] DigiPAN performance with noise ?
Dear Guido,
With WinPSK, try checking the MaxLikelyhoodDetector on the Setup | General
dialog. Also try QPSK instead of BPSK under different conditions.
Everyone's environment and typical operating conditions are different.
Careful use of Notch filters and Pass Band Tuning features on the rig are also
quite helpful in reducing the effects of adjacent channel interference. There
have been many informative postings in the past 6 months on this subject. The
narrow bandwidth of the PSK31 detection is very effective, but it needs a little
help when strong QRM is causing your AGC to pump.
Under conditions of pure white noise, I don't think any IF or audio filtering
can do much to improve upon the PSK31 intrinsic capabilities.
73 de Bob Lay, w9dmk@arrl.net, King George, VA
http://www.qsl.net/w9dmk
http://www.fortunecity.com/meltingpot/albania/784
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------------------------------
Date: Tue, 11 Jan 2000 14:14:16 EST
From: Ronald J Finger <rms_micro@juno.com>
Subject: [none]
ZCZC AG01
QST de W1AW
ARRL Bulletin 1 ARLB001
>From ARRL Headquarters
Newington CT January 11, 2000
To all radio amateurs
SB QST ARL ARLB001
ARLB001 Work begun to revise Amateur Radio examinations
The nation's Volunteer Examiner Coordinators, including the
ARRL-VEC, now are under the gun to meet the April 15 implementation
date of the FCC's recently announced Amateur Radio restructuring
plan.
The FCC's momentous action on December 30, 1999, reduced the number
of license classes to three and established 5 WPM as the sole Morse
code examination element. More than half of those responding to an
informal poll on the ARRL Web site indicate they plan to upgrade
during 2000. Brisk demand for study materials suggests that many
amateurs will be hitting the books in the coming weeks.
After April 15, 2000, the FCC will only issue Technician, General,
and Amateur Extra class licenses. Novice and Advanced licensees will
retain current operating privileges and may renew indefinitely. The
FCC's new licensing scheme simplifies and shortens the upgrade path
from the ground floor through Amateur Extra. There are fewer written
examinations and total questions. Those wishing HF privileges also
would need to pass the single 5 WPM code test.
The FCC has left it in the hands of VECs to determine the specific
mix and makeup of written examination questions. Current Amateur
Radio study materials remain valid at least until the new rules
become effective in April.
ARRL-VEC Manager Bart Jahnke, W9JJ, says the NCVEC Question Pool
Committee has been meeting by telephone and e-mail to get the
updating process under way. Jahnke said the revised question pools
will be out ''well in advance'' of April 15.
The ARRL Board of Directors is expected to review the FCC Report and
Order and discuss its implications when it meets January 21-22 in
Memphis.
Details of the restructuring plan and a list of frequently asked
questions are available on the ARRL Web site, http://www.arrl.org.
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