From: "R. Ton" 
Subject: RE: [drakelist] TR-4C Resistor help


"R. Ton"  made an utterence to the drakelist gang
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Just a quick note...  Man, what a difference!  I found a pair of
1-ohm 1-watt resistors.  Still have some problems that indicate
that the T/R relay needs replacing so have just placed one on order.
I'll leave the radio off until that arrives, but I can tell already
that this is the right track.  Many thanks!

  -Rob (KFØRT)

> -----Original Message-----
> From: cspanos{at}hiwaay.net [mailto:cspanos{at}hiwaay.net]
> Sent: Thursday, November 04, 2004 12:55 PM
> To: R. Ton
> Subject: RE: [drakelist] TR-4C Resistor help
>
>
> That sounds correct.  I seem to remember putting two 3.9 ohm
> resistors in parallel to get the value needed.  The other benefit
> was that it could handle a little more power - but that could
> be good or bad!!!  I think I used 1/2 watt resistors but I think
> it really called for 1/2 watt for the 2 ohm resistor.
>
> Be sure and check that the T/R relay is working!  I think mine
> was STUCK in the TRANSMIT mode and that's why the resistor smoked.
>
>
> Charles
>
>
> Quoting "R. Ton" :
>
> >
> > "R. Ton"  made an utterence to
the drakelist gang
> > ----------------------------------------------------------------------
> > Many thanks, Charles!  Looks like it's R45, 2 ohms.
> > Does that look like the one?  Seems to ohm out right,
> > but everything in that part of the circuit is low
> > resistance.
> >
> > 73, Rob
> >
> > > -----Original Message-----
> > > From: cspanos{at}hiwaay.net [mailto:cspanos{at}hiwaay.net]
> > > Sent: Wednesday, November 03, 2004 9:45 AM
> > > To: R. Ton
> > > Subject: Re: [drakelist] TR-4C Resistor help
> > >
> > >
> > > I seem to remember the same problem.  I don't have a
> > > schematic handy at the moment to say exactly the value
> > > but I seem to remember that it is under 5 ohms.  I think
> > > I paralleled two junk box resistors to get the value needed.
> > >
> > > Look on the schematic for the plate current shunt
> > > resistor.  It will be near the meter on the print.
> > >
> > > Once I replaced mine the rig seemed OK but it turned
> > > out to have sticking contacts on the TR relay.
> > > Probably caused the resistor to fry in the first place.
> > >
> > > Since I am at work I'll have to download a schematic
> > > to say exactly which resistor it is and the value.
> > > Perhaps I can get to it this afternoon.
> > >
> > > Charles
> > > N4DKE
> >
> > ----------------------------------------------------------------------
> > On Behalf of "R. Ton" 
> > Submissions:        drakelist{at}www.zerobeat.net
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> > in body
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> >
>

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On Behalf of "R. Ton" 
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