[chirp_users] Chirp Data transfer
dsmith at danplanet.com
Mon Jul 4 15:47:16 PDT 2011
> The USB cable is a direct cable with a USB connection on one end, and
> the 3.5 mm 4 conductor plug that is normally speaker mic, but used to
> clone. Nothing in between. It was purchased specifically for the VX-3.
There *should* be something in between. The radio does not speak USB,
which means you need a USB-to-serial chip in between. This is normally
hidden inside the USB hood, since it's so small. If you didn't have
anything, then you wouldn't see a new serial port show up when you plug
Given the discussion below, I really think it's a combination of
potentially one bad cable and maybe a not-fully-seated second cable. If
you don't get the clone header in HyperTerminal, then something's just
plain not connected.
> The "real serial cable" comes from the 9 pin D connector to a 3.5 mm
> regular stereo connector (3 conductors including ground), that then
> goes thru an adapter to the 3.5 mm 4 conductor plug used for cloning.
> Years ago, this worked fine this way with a VX-5, so I doubt it has
> changed, unless the VX-3 and VX-5 have the TxD and RxD switched.
Yep, agreed, although I'd suspect any and all of that as being the
problem, either preventing physical insertion, or not connecting the
> At this point, I am thinking that possibly the plastic around the jack
> on the VX-3s do not permit the cable to go all of the way in. It
> looks like it goes in all of the way, but it is really up against the
> plastic case, so it is hard to tell for sure. And no way to really
> test that. Of course if it was not in all of the way, the TxD and RxD
> connections would not be the right place, and it would not work.
Yep, this is why I asked about fully seating the connector. Sounds like
there may still be some work to be done here.
> Of course one would hope that a cable bought specifically for the VX-3
> would fit the VX-3!
Where did you get it? There are tons of devices that use 3 and 4
conductor TRS connectors for cloning and I wouldn't put it past many of
the ebayers to have sent you the wrong cable.
If you have the ability to check that the pins are properly connected,
that might be a good next step. The pinout is:
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