[GreenKeys] Northern Radio Volume and Current Indicator...

[drlegendre .]

So I see a 12AU7 (dual, low-mu triode), a 6C4 (1/2 of a 12AU7), a 6X4
(full-wave rectifier), a 0A2 (90V shunt regulator) and finally a 6C20,
which is a time-delay relay.

In short, three low-gain amplifier sections, plus a regulated power supply
with a time delay.

Sounds like a dedicated vacuum tube voltmeter with an ammeter function..?

On Tue, Nov 22, 2016 at 11:36 AM, W2HX <w2hx at w2hx.com> wrote:

> Hi guys,
>
>
>
> I picked this up on ebay recently. I found a manual online (available from
> the link below). It says the following, “The Northern Radio Volume &
> Current Level Indicator, Type 254 is used as a signal level and loop
> current indicator at both transmitting and receiving terminals.”
>
>
>
> http://w2hx.com/x/NorthernRadio/Type254Model1/
>
>
>
> Anyone ever play with one of these? Maybe someone used it while they were
> in active use?
>
>
>
> Should look nice next to my Type 152 tone converter
>
> http://w2hx.com/x/NorthernRadio/Type152Mod2/
>
>
>
>
>
> Thanks
>
> Eugene W2HX
>
>
>
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