[ARC5] BC-348-R Update

Doran Platt jeepp at comcast.net
Fri Aug 19 13:39:25 EDT 2022


Yes, Pins 2 and 6 are the "relay" pins that disconnect screen voltage from several tubes for muting.  These pins are to be normally closed, open on mute.
K3HVG

>     On 08/19/2022 12:47 PM Roy Morgan <k1lky68 at gmail.com> wrote:
> 
> 
>     You may know this:
> 
>     There is a connection on the rear panel connector that must be made to enable receiving. Part of the transmit/receive system when paired with a transmitter. Maybe the @ relay jumper" you mention. 
> 
>     I don't remember if it connects B+ to some tubes, or connects some tubes cathode lines to ground. 
> 
>     I hope it works well for you once you figure it out. 
> 
>     Roy
> 
>     Roy Morgan
>     K1LKY Western Mass
>     K1LKY68 at gmail.com
> 
> 
> 
>         > > 
> >             > > >             -----Original Message-----
> > >             From: arc5-bounces at mailman.qth.net mailto:arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net mailto:arc5-bounces at mailman.qth.net ] On Behalf Of JAMES FALLS
> > >             Sent: Thursday, August 18, 2022 02:14
> > >             To: milsurplus; ARC5
> > >             Subject: [ARC5] BC-348-R Update
> > > 
> > >             Still dead.
> > > 
> > >         > > 
> >     >     . . . 
> 
>         > > 
> >             > > > I’m going to pull it from the cabinet again, recheck all the tubes, install the relay jumper,
> > > 
> > >         > > 
> >     > 
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