Re: OPC-478 cable for Yaesu VR120?

Marc,

I downloaded my freq list this morning, moved a few things around, 
and uploaded back to the radio. Worked fine. Make sure you have fresh 
batteries in the 120.  

Good Luck!

Tom

--- In [email protected], "Marc (masc)" <marcje01@y...> 
wrote:
> Hi Tom,
> 
> Maybe a stupid question, but I reckon that both uploading and 
downloading
> to/from the VR120 will work?
> 
> I ask since I read  that the OPC-478 may work on the VR120, but 
only for
> downloading *to* the PC. Uploading *from* the PC doesn't seem to 
work with
> that cable?!
> 
> The schematic indeed seems very easy to build, so if it works I 
don't
> see the
> need to use a MAX232.
> 
> Cheers,
> /Marc
> 
> 
> 
> --- In [email protected], "spudboy488" <cts050@e...> wrote:
> > I built the "japanese" discrete version also listed on the tk120 
page 
> > and it works fine.  Transistor values don't seem to be critical 
as 
> > they seem to be used more as a switch then an amplifier.  If 
things 
> > don't seem to work right with the transistors you pick, you can 
lower 
> > the values of the two base transistors (R4, R5) a bit to drive 
the 
> > switch a little harder.  I didn't have to with whatever devices I 
> > grabbed out of the junk box.
> > 
> > http://www.soaring.co.jp/rwstuff/021110.htm
> > 
> > Tom - AC9TS



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