I am using jvccomm32 with good results for hffax. can this program
decifer navtex?When i try it I just get a garbled string of letters.
Tony

Tony, Some of what appears to be navtex are in fact encoded
transmissions. You must be on the proper frequency at the proper time.
Also your program does need to be capable of receiving navetex. In
addition the are adjustments and settings to receive it properly.

TB wrote in message ...
I am using jvccomm32 with good results for hffax. can this program
decifer navtex?When i try it I just get a garbled string of letters.
Tony

Tony, JVComm32 can certainly be used to recieive Navtex with a simple
computer to radio patch cord. The default offset in JVComm is 1.36
down from the center freq so if you have a radio that can tune to
516.64 Khz that would be the ideal freq. If however your radio can't
tune that close, you can change the default offset in the
configuration to something like 1.30 and tune the radio to 516.7 or
whatever. Listen for the signal first before you play with the
software and the computer. If you can't hear it at the radio, you've
got to fix it there first. Navtex is considered to be a short range
(200 miles) broadcast, but is usually good at much greater distances.
All the stations (Miami, Boston, New Orleans, etc.) use the same
freq's and send at different times, so if another station within your
area is sending past their alotted time, your station won't start at
it's regular time. You must have your software volume controls in
Windows turned on and adjusted so that the incoming signal can get to
the JVComm software. Good luck.

Mark
S/V Shooting Star

"Mark Reichow" S/V Shooting Star wrote
Tony, JVComm32 can certainly be used to recieive Navtex with a simple
computer to radio patch cord. The default offset in JVComm is 1.36
down from the center freq so if you have a radio that can tune to
516.64 Khz that would be the ideal freq. If however your radio can't
tune that close, you can change the default offset in the
configuration to something like 1.30 and tune the radio to 516.7 or
whatever. Listen for the signal first before you play with the
software and the computer. If you can't hear it at the radio, you've
got to fix it there first. Navtex is considered to be a short range
(200 miles) broadcast, but is usually good at much greater distances.
All the stations (Miami, Boston, New Orleans, etc.) use the same
freq's and send at different times, so if another station within your
area is sending past their alotted time, your station won't start at
it's regular time. You must have your software volume controls in
Windows turned on and adjusted so that the incoming signal can get to
the JVComm software. Good luck.

It worked great for me, albeit from almost on top of NMN's transmitters in
Virginia Beach. Sure wish I had seen that crazy default offset before I had
to tune around so much to find it ;-)

I like JVComm32 better than the trial I also tried of MScan Meteo.

Jack