I'll put out a JASON test transmission tonight on 137.500000, at 1900 UTC
(2000 local) using the low power Tx. I may be on sporadically earlier than
that, using the high power Tx to test for any EMC and compatibility
problems so any strong signals on 137.50000 +/- 2.02Hz may be me
Yes, the initial programming of teh DDS module is exactly as before, at
19200 baud, the Jason code is tacked onto the end of the DDSPC5 software
with a separate serial comms routine for 9600 operation. The only
facility I haven't added yet is the ability to programme the Jason
increment into the two EEprom location via the serial link - that still has
to be done at the PIC programming stage. The new version will have the
name DDSPC5J and by the time I distribute it, will have a 'J' command added
to programme the increment.
If you stick with flash programmed PICs such as the 16C84 and 16C628 then
the programmer can be very simple. There are several designs around on the
Web. I use the Epic programmer, but looking at the circuit of that it is
very similar to many of the homebrew ones.
Andy G4JNT
-----Original Message-----
From: Alan Melia [SMTP:[email protected]]
Sent: 2002-08-03 00:40
To: LF-Group
Subject: LF: Re Jason on the DDS
Hi Andy, that sounds quite useable. I presume that the initial programming
will be at 19.2kB ?? or have you put the s/w UART down to 9.6 for this
purpose?? This means it could be initially programmed manually with a
simple
terminal program and then Jason started. Are the possible glitches as a
terminal program 'lets go' and Jason gains control of the port likely to be
a problem??
I will be around most of the weekend and would like a chance to check out
my
system with Jason now I have found why I couldnt even copy Jim the other
week.
Make sure you have the Volume Control checked in the Multimedia components
of Windows Set-up......this silly Billy didn't. Or I removed it in my
attempts to clean up and shift any unnecessary files.
I guess we need to get some more programmed PICs for the DDS.....note I
must
get myself a programmer.
Cheers de Alan G3NYK
[email protected]
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