[ARC5] Operation of ARC-5 Transmitter

Cliff Miller cliff52 at gmail.com
Sun May 15 08:40:45 EDT 2016


Thanks everyone for the replies.  I checked for the screen grid mods but
found the transmitter to be stock with no SG connections except the rear
connector.  I had 239V on the oscillator power input and got no glow on the
1629.  All the filaments are lit FB but no joy.
Any checks I could do before ordering a new magic eye tube?  Is the
difference with 250V enough to prevent proper operation?
Again, thanks everyone.

On Sat, May 14, 2016 at 4:13 PM, AKLDGUY . <neilb0627 at gmail.com> wrote:

> It is vitally important that the final tube screens NOT be supplied
> with power while you check the oscillator. They will be damaged
> if this happens. Your transmitter may have been modified, so that
> they are connected to the oscillator plate supply.
>
> If you are not truly familiar with how to prevent the screens being
> inadvertently powered up, the best option by far is simply to pull
> both 1625s from their sockets.
>
> 73 de Neil ZL1ANM
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-- 
Cliff Miller
cliff52 at gmail.com
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