[Milsurplus] LV on ARC RX

[Brenda Gentry]

Because the plate supply comes into the R-392 on a separate pin of the 
power connector, it is easy to raise it alone without affecting the 
filaments. I have used about 32 volts on the plates with good results.

    B. Gentry, KA2IVY

On 9/7/25 11:10 PM, boeing377 at gmail.com wrote:
> Add R 392 to that 28VDC B+ list. I found better performance with 
> higher plate voltage but not enough to justify any permanent mods.
>
> ARN 6 was so much easier to install than SCR 269
> or ARN 7 which both required 400 cycle 110 VAC. ARN 6 needed high 
> frequency AC for the
> selsyns  but it used a 28 VDC vibrator to accomplish this.
>
> Mark
> AF6IM
>
>
> On Sun, Sep 7, 2025 at 2:09 PM Charlie L. <mjcal79 at gmail.com 
> <mailto:mjcal79 at gmail.com>> wrote:
>
>     I have run every ARC 5 receiver I have on only 28VDC B+.  Have to
>     use a set of headphones, but with a clean DC supply, feeding 28 to
>     both filament and normal dynamotor B+ pin, they work fine.  The
>     ARN6 RDF uses all common tubes and runs only 28 on the plates.  I
>     have never analized the ARC 5 on 28V B+, checking sensitivity and
>     selectivity, but just for normal comparisons, seemingly  very
>     little difference except for audio power out..
>
>     Charlie W4MEC in NC
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