John,
The first thing that comes to mind is whether there were any ground wave
signals mixing with sky waves during your field tests? It's been shown
that NVIS throughput can fail when the sky wave echoes interact with
ground waves. The sky waves take more time to arrive at the receiver so
Hi Tony,
Thank you for the information. This is the issue with field tests, there are
always several variables.
I will proceed with some other field tests, trying to eliminate some of the
variables. In my case I have an inverted V on 40 and 80M at only 9 meters peak
over the ground for the
I have done several tests with DA5UWG on 80m, and the 200 km path still shows
lots of multipath.
Both antennas are low (mine is a full wave 80m loop at 10m, DA5UWG has a dipole
at 12m).
Sometimes the mode goes up to PSK500 for a few frames, but it always switches
back to PSK500R, PSK250R or
Rein, what is the cause of the 1700hr heaviest multipath? Is that a
ionospheric condition of some peak airport traffic issue ?
Andy K3Uk
On Fri, Apr 2, 2010 at 7:35 AM, Rein Couperus r...@couperus.com wrote:
I have done several tests with DA5UWG on 80m, and the 200 km path still
shows
Your question is one that I have also. In our recent NVIS testing with
fldigi/flarq we found BPSK250 provided better throughput than other modes we
tested, and most notably MFSK32 which we thought would be our safe, robust mode.
This was with a variety of band conditions including strong
greetings etc
little problem. have an older buxcomm comport/audio isolator
dongle. it is wired for rts high to key rig, and have verified this
with multipsk software and works fb on two different computers
one xp other win7.
when i try to use it with easypal, it will not key, it instead
database 4993 (20100401) __
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com http://www.eset.com
__ Information from ESET NOD32 Antivirus, version of virus
signature database 4994 (20100402) __
The message was checked by ESET NOD32
