Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Robert Thompson
Sent: Wednesday, September 19, 2007 9:17 PM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Re: [hflink] ARQ FAE
Depends; Shannon's theorem gives three variables: bitrate, modulation
Hi Rud,
Yes, the Military and Government HF users can and do at times operate
with more RF EIRP that we Radio Amateurs have licensed limits for operating.
However, WRT ALE at least, its not needed and the bulk of HF Military
activity is usually within NVIS ranges as its tactical, and with
--- In digitalradio@yahoogroups.com, Patrick Lindecker [EMAIL PROTECTED]
wrote:
Hello Steinar,
OK for 18h30 to 19h00 UTC to-morrow evening.
Note: you must have a stable frequency to avoid drift (in ALE you
are supposed to have a fixed frequency), so one hour of working before
the QSO will
Patrick
- Original Message -
From: Demetre SV1UY
To: digitalradio@yahoogroups.com
Sent: Thursday, September 20, 2007 3:45 PM
Subject: [digitalradio] Re: [hflink] ARQ FAE
--- In digitalradio@yahoogroups.com, Patrick Lindecker [EMAIL PROTECTED]
wrote:
Hello Steinar
--- In digitalradio@yahoogroups.com, Patrick Lindecker [EMAIL PROTECTED]
wrote:
Hello Demetre,
Please let me know, the frequency you mentioned is it display
frequency and are you going to
use LSB or USB?
It is the display frequency (3617 KHz) on your XCVR and in USB.
Note: you can also
To: digitalradio@yahoogroups.com
Sent: Thursday, September 20, 2007 9:33 PM
Subject: [digitalradio] Re: [hflink] ARQ FAE
--- In digitalradio@yahoogroups.com, Patrick Lindecker [EMAIL PROTECTED]
wrote:
Hello Demetre,
Please let me know, the frequency you mentioned
Hi all,
It was extremely heavy qrm on the frequency. I am now trying another
antenna.
and still sending CQ.
73 de LA5VNA Steinar
Demetre SV1UY skrev:
--- In digitalradio@yahoogroups.com
mailto:digitalradio%40yahoogroups.com, Patrick Lindecker [EMAIL
PROTECTED]
wrote:
Hello
Demetre,
Care for trying on 14.109,5 now ?
LA5VNA Steinar
Demetre SV1UY skrev:
--- In digitalradio@yahoogroups.com
mailto:digitalradio%40yahoogroups.com, Patrick Lindecker [EMAIL
PROTECTED]
wrote:
Hello Demetre,
Please let me know, the frequency you mentioned is it display
--- In digitalradio@yahoogroups.com, Steinar Aanesland [EMAIL PROTECTED]
wrote:
Demetre,
Care for trying on 14.109,5 now ?
LA5VNA Steinar
OK Steinar, trying now 20:43 UTC
73 de SV1UY
I think the basic ALE multitone waveform is always x3, although there
are others much more expert than I on this list. Note that if FEC is
being used, the 375 bps would be the raw rate, not the end-to-end
throughput rate.
On 9/19/07, Demetre SV1UY [EMAIL PROTECTED] wrote:
--- In
--- In digitalradio@yahoogroups.com, Robert Thompson
[EMAIL PROTECTED] wrote:
I think the basic ALE multitone waveform is always x3, although there
are others much more expert than I on this list. Note that if FEC is
being used, the 375 bps would be the raw rate, not the end-to-end
throughput
, in English, in the Word
95 document ARQ_FAE_version_1 situated in the Specifications heading on my
WEB site (English page).
- Original Message -
From: Demetre SV1UY
To: digitalradio@yahoogroups.com
Sent: Wednesday, September 19, 2007 10:38 PM
Subject: [digitalradio] Re: [hflink
The 8FSK125 mode is quite an old mode now and from what I have been
reading, commercial/government will eventually move away from that
particular waveform in order to standardize on the other newer designs.
Because it has one tone that frequency shifts to 8 locations at the rate
of 125 baud so
Depends; Shannon's theorem gives three variables: bitrate, modulation
width, minimum workable noise level. You can get extreme bitrates in
narrow channels, but only if you're willing to accept really large
minimum SNRs.
There is a pretty good paper that analyzes BPL in terms of the Shannon
To Demetre, the speed is 125 bauds as the other ALE modes.
73
Patrick
Hi again Patrick,
How difficult is it to make 125 bauds faster, say 800 - 1200 bps so
that it can at least compete with PACTOR II?
73 de Demetre SV1UY
Just a note... 125 baud is not always 125 bits per second,
--- In digitalradio@yahoogroups.com, Robert Thompson
[EMAIL PROTECTED] wrote:
Just a note... 125 baud is not always 125 bits per second, since the
modulation unit may contain multiple bits of data. An example: An
eight-tone modem might have each tone represent one of the 8
different
--- In digitalradio@yahoogroups.com, Patrick Lindecker [EMAIL PROTECTED]
wrote:
Hello Steinar,
We can plan a sked saturday if you want.
You can also beacon APRS positions in FAE (non ARQ in that case),
for test.
To Demetre, the speed is 125 bauds as the other ALE modes.
73
Patrick
--- In digitalradio@yahoogroups.com, Patrick Lindecker [EMAIL PROTECTED]
wrote:
Hello Steinar,
We can plan a sked saturday if you want.
You can also beacon APRS positions in FAE (non ARQ in that case),
for test.
To Demetre, the speed is 125 bauds as the other ALE modes.
73
Patrick
interested to
reduce the speed so as to be able to do QSO with very low S/N (but smaller
throughput).
73
Patrick
- Original Message -
From: Demetre SV1UY
To: digitalradio@yahoogroups.com
Sent: Monday, September 17, 2007 10:40 PM
Subject: [digitalradio] Re: [hflink] ARQ FAE
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