On Fri, Aug 21, 2009 at 8:41 AM, Mel<ve...@videotron.ca> wrote:
> No thanks Kostas. It is fairly obvious from your response and others I
> have corresponded with at length that these cheap Chinese interfaces
> sold on eBay do NOT work properly... they are introducing errors and
> relying on error correction in the programs to make them work after a
> fashion.
DX4WIN doesn't read all of the response string from the rig when it's
checking what mode is currently set. When the next command is sent,
DX4WIN sees the leftover garbage and recovers. The lack of buffering
in the cheap interfaces means that this leftover garbage isn't
reliably read and confuses the next command (which is what reads the
VFO). All that I do is to fix the command definition to read the
entire response.
You can see this for yourself using your current interface:
File/Databases/Radios, select the "Test" tab, then click "Read" a few
times. Notice that every time DX4WIN complains about "garbage ignored"
or something like that.
Fixing this bug makes the cheap interface 100% reliable, at least for
me. The non-USB interface still works fine as well (even though it
didn't require the fix).
73,
-Rick
--
Rick Murphy, CISSP-ISSAP, K1MU/4, Annandale VA USA
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