[IRCA] R-390A for sale

[Charles A Taylor <MWDXer@xxxxxxx>]

At 03:31 AM 3/18/2007 +0000, you wrote:
>How long does it take to tune a R-390 from 530-1700 kcs?  Hope to buy one 
>some day.
>
>Dennis,
>Vancouver, WA

Dennis,

Don't quite know what you're asking here. If you're bandscanning, it'll 
take a while
because you have to tune from 500 to 1000 kHz, then reset the MEGACYCLE
CHANGE to show "01" on the counter dial, and run the KILOCYCLE CHANGE
back down to show "000" on the counter dial, and start tuning back up toward
"01700."

To go directly from 500 kHz to 1700 kHz is a matter of seconds.

You'll soon get "R-390A wrist." Like carpal tunnel syndrome, only worse. Hi.
=====================================================
>"Does one need 3 phase power to operate an R 390?"

> > Yes, and your town's lights will all dim down when you turn it on.
> >
> > Actually, it draws something like 300 watts at 120 VAC. And it
> > does produce some heat. Single phase.
> >
> > I run mine at 100 VAC (via an autotransformer) to lengthen the life
> > of the components (especially tubes). This also makes it run much cooler.
> > The set suffers no loss in sensitivity
> >
> > I don't turn it on from a cold start. Instead , I "ramp" the 
> autotransformer
> > up to 60 VAC for about 15 sec., then 90 VAC for 15 sec., then 100 VAC
> >
> > I haven't retubed it in 15 years, except for one of the 26Z5 B+ rectifiers
> >
> > More questions?
> >
> > ===================================================

73,

Charles


        -----
Charles A Taylor, WD4INP
Greenville, North Carolina 


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