I HAVE FOUND A MODEL 711 HALSON.IT HAS A L42BG TUBE IN IT ,CANNOT FIND TUBE ON N.A. TUBE LIST. NEED TO KNOW PIN LAYOUT

Hi

L42BG is a ballast tube. Like a wire wound resistor used in series with tube filaments to drop voltage. It drops 42 volts @ 300 ma.

If it's octal there will be resistance between pin #3 and #7 with a lamp tap on pin #8.

Norm

:I HAVE FOUND A MODEL 711 HALSON.IT HAS A L42BG TUBE IN IT ,CANNOT FIND TUBE ON N.A. TUBE LIST. NEED TO KNOW PIN LAYOUT
:

:Hi
:
: L42BG is a ballast tube. Like a wire wound resistor used in series with tube filaments to drop voltage. It drops 42 volts @ 300 ma.
:
: If it's octal there will be resistance between pin #3 and #7 with a lamp tap on pin #8.
:
:Norm
:NORM,THIS TUBE HAS ONLY 4 PINS.
:
:
::I HAVE FOUND A MODEL 711 HALSON.IT HAS A L42BG TUBE IN IT ,CANNOT FIND TUBE ON N.A. TUBE LIST. NEED TO KNOW PIN LAYOUT
::
:
:

Hi

It was made in octal and 4 pin base. Since you have the 4 pin base main resistive element is between pin #1 and #4 with a lamp tap on pin #3. No connection to pin #2.

The tube was mainly used in Emerson DP-332. This one may be similar to your radio?

http://www.nostalgiaair.org/PagesByModel/039/M0005039.pdf

Norm

::Hi
::
:: L42BG is a ballast tube. Like a wire wound resistor used in series with tube filaments to drop voltage. It drops 42 volts @ 300 ma.
::
:: If it's octal there will be resistance between pin #3 and #7 with a lamp tap on pin #8.
::
::Norm
::NORM,THIS TUBE HAS ONLY 4 PINS.
::
::
:::I HAVE FOUND A MODEL 711 HALSON.IT HAS A L42BG TUBE IN IT ,CANNOT FIND TUBE ON N.A. TUBE LIST. NEED TO KNOW PIN LAYOUT
:::
::
::
:
: