[digitalradio] (unknown)

2010-04-03 Thread David Michael Gaytko // WD4KPD
addendum to my last

have tried yet another dongle, and it acts the same as the other
two...all work in multipsk with rts keying in xp and win7.  will
not work with easypal.

still seeking suggestions

david/wd4kpd



God's law is set in stone : everything else is negotiable

On 4/3/2010 1:42 PM, digs...@yahoogroups.com wrote:
 > There is 1 message in this issue.
 >
 > Topics in this digest:
 >
 > 1. keying rig via commport
 >  From: David Michael Gaytko // WD4KPD
 >
 >
 > Message
 > 
 > 1. keying rig via commport
 >  Posted by: "David Michael Gaytko // WD4KPD" 
wd4...@suddenlink.net wd4kpd
 >  Date: Fri Apr 2, 2010 1:27 pm ((PDT))
 >
 > 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
 > stays keyed/rts high. i have tried all possible combination's
 > of the rts/dts setup, and it even stays high using the cat command
 > option on either computer.
 >
 > any ideas 
 >
 > david/wd4kpd
-- 
God's law is set in stone : everything else is negotiable


[digitalradio] Digital modes, examples of.

2010-04-03 Thread obrienaj
Check http://www.youtube.com/profile?user=k2ncc#g/u  for a good grouping of 
digital mode examples on youtube.

Andy K3UK



[digitalradio] PSKMail -- Path Tests Revisited [3 Attachments]

2010-04-03 Thread Tony

John,

See attached.

Tony -K2MO



*Minimum SNR (white noise)*

PSK250 -2db
MFSK32   -8db
PSK250R  -7db

*Simulation: NVIS  SNR +3db*

ModeCopy

PSK250 62%
MFSK32  100%
PSK250R   61%

*Simulation: Selective Fading* *SNR -3db*

PSK250  67%
MFSK16 95%
PSK250R76%

*Simulation: CCIR POOR *

*SNR  +3db*
PSK25089%
MFSK32  99%
PSK250R 82%

*SNR -3db*
PSK25065%
MFSK32   97%
PSK250R  61%


*SNR  -10db*
PSK25033%
MFSK32   46%
PSK250R  27%