Re: OPC-478 cable for Yaesu VR120?

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




--- In [email protected], "caffeinated1978" <cherrypie@s...> 
wrote:
> Looking for a home built solution myself, getting a cable here in
> Australia is a pricey option.
> 
> Anyone know of any confirmed working schematics?
> 
> Thanx.
> Paul.
> 
> --- In [email protected], "Marc (masc)" <marcje01@y...> 
wrote:
> > Hi Bob,
> > 
> > Thanks for your quick answers! On your tk120 page you have a link 
to a
> > page
> > of 'mister skinny' who uses a MAX232 based solution.
> > Did he report top you that this cable works? I'm wondering since 
on
> > his page
> > he's only talking about ICOM (just checked his page).
> > As said to buid it my self is not a problem, I just need a 
schematic
> > which will
> > work.
> > 
> > I checked the link in your first reply. Problem is that I'm in 
Europe,
> > so I
> > reckon it will be expensive to send the cable over here.
> > That's the main reason I was thinking about building it myself....
> > 
> > Cheers,
> > /Marc
> > 
> > --- In [email protected], "Bob Parnass, AJ9S" 
<yahoo2@p...>
> > wrote:
> > > I forgot to mention that I have tried, but have been 
unsuccessful in
> > > getting the Purple Computing PCL35S cable to work properly with
> > > my Yaesu VR-120 and VR-500.
> > > -- 
> > >
> >
> 
======================================================================
===
> > > Bob Parnass, AJ9S             GNU/Linux User          
> > http://parnass.com


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