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<div class="moz-cite-prefix">On 2013-04-09 20:55, Dan Smith wrote:
</div>
<blockquote cite="mid:20130409205547.782a69d1@theine.danplanet.com"
type="cite">
<pre wrap="">... my MAX232-based custom interface cables ...
What commercially-available cables require RTS low and DTR high?
</pre>
</blockquote>
<br>
MAX232-based cables are apparently regarded as the cream of the
crop, which may be why you have not seen any problems.<br>
<br>
As I noted, the Radio Shack 20-289 (the cable described in the
link), which was sold widely for amateur and scanner usage.
However, as I said (and the link noted), the circuit in that cable
is problematic for other reasons, so I'm not so concerned about that
one.<br>
<br>
However, as I said, I have the RT Systems CT-29A, which was also <b>very
widely</b> sold for a number of both Icom and Yaesu radios, before
people started using USB. I bought it years ago to work with the
IC-7000. With some serial ports, it works fine with both DTR and
RTS high. However, on the Digi serial port box I'm using (another
widely sold product), the CT-29A requires RTS <b>high</b> and DTR <b>low</b>,
probably due to serial port loading (why is why some cables work on
some computers and not others).<br>
<br>
If you don't want to do it, that's fine. I use RumTrol for saving
memories on the IC-7000, so I don't need Chirp to do it; the only
radio I use Chirp with, is the Yaesu FT-897D. However, this isn't a
pipe dream of mine; both RumTrol and Ham Radio Deluxe have seen the
need for quite some time, and it certainly wasn't me who prodded
them; my first exposure to both programs came with the feature
already there, so there must have been some demand other than my
crazy idea. Further, the feature is not hidden; it's there with
the serial port selection.<br>
<br>
You already have a menu list with "Enable Developer Functions"; you
could always enable it there. Or, you could create an additional
item in that menu list titled "Advanced RS-232 Options".<br>
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