From: "David Havel" 
Subject: [drakelist] Using an RV-75 with R7 - Interface Model 1544 Question


"David Havel"  made an utterence
to the drakelist gang
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Hello all,

I'm wiring up an interface to replicate the 1544 adapter, per the =
diagram on
http://www.dproducts.be/DRAKE_MUSEUM/images/conR7TR7.JPG and have a
question.  If I am not modifying the R7 per the 1544 instructions =
(utilizing
the Jumper Uncut switch position as shown), I'd like to know if I really
need the external 13V input from the rear of the R7, since the interface
cable has 13V available on pin #10 (also from the rcvr.).  It appears =
that
the external 13V is only needed if the Jumper Cut position is used, =
which
removes the shunt from the emitter to the collector on the 2N4402
transistor.  Am I correct in this assumption?  (ps.  I have the unit =
wired
in now without utilizing the 13V external DC jack of the R7 and it =
appears
to be working fine!)

Thank you advance!

73,

Dave - NO3K



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Using an RV-75 with R7 - Interface Model 1544 Question




Hello all,


I'm wiring up an
interface to replicate =
the 1544 adapter, per the diagram on =">http://www.dproducts.be/DRAKE_MUSEUM/images/conR7TR7.JPG">=
T COLOR=3D"#0000FF" SIZE=3D2 =
FACE=3D"Arial">http://www.dproducts.be/DRAKE_MUSEUM/images/conR7TR7.JPG=
FONT>
and have a question.  =
If I am not modifying the R7 per the 1544 instructions (utilizing the =
Jumper Uncut switch position as shown), I'd like to know if I really =
need the external 13V input from the rear of the R7, since the interface =
cable has 13V available on pin #10 (also from the rcvr.).  It =
appears that the external 13V is only needed if the Jumper Cut position =
is used, which removes the shunt from the emitter to the collector on =
the 2N4402 transistor.  Am I correct in this assumption?  =
(ps.  I have the unit wired in now without utilizing the 13V =
external DC jack of the R7 and it appears to be working =
fine!)

Thank you
advance!


73,


Dave - NO3K





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