hole in SB cabinet

[Emil Dular]

My SB-102 has a molex plug there you can unplug to disable the screens so
you can neutralize the finals. See instructions following:
                        May 23, 1974
SB-102                                          Bulletin No:
SSB Transceiver                                 SB-102-8

         Alternate Method of Neutralizing The Final Amplifiers

NOTE:  Be sure unit is off and power supply high voltage capacitors are
discharged.

1.  Disconect final plates & screen grid.***

2.  Turn unit on.

3.  Rotate the BAND switch to 28.5.

4.  Place the VTVM RF probe in the ANTENNA connector.**

5.  Set the FUNCTION switch to TUNE.

6.  Rotate the LEVEL control fully clockwise.

7.  Adjust the PRESELECTOR control for a maximum reading on the VTVM.

8.  Adjust the FINAL control for a maximum indication on the VTVM, with
    the LOAD control set at the 50 ohm position.

9.  Using an insulated screwdriver, adjust neutralizing capacitor for a
    MINIMUM indication on the VTVM.

10. Readjust the neutralizing capacitor for a minimum indication on the
    VTVM.

11. Turn the FUNCTION switch to the off position.

12. Discharge high voltage power supply capacitors.

13. Reconnect final plates & screen grid.

**VTVM & RF probe will be needed.

***To remove screen voltage in SB-100, SB-101, HW-100 & HW-101 disconnect
R920 (100 ohm resistor) from buss wire between pins of V8 & V9.  In the
SB-102 removal of accessory plug is all that's required.  To remove high
voltage in SB-100, SB-101 & SB-102 disconnect red wire at lug 4 (in
Sb-100 lug 3) of terminal strip BK that goes to grommet BL.  In HW100 &
HW101 disconnect red wire going to lug 1 of RF choke in final cage.

NOTE:  Take adequate steps to eliminate any possible contact with B+ or
B+ shorts to chassis after disconnecting wire & resistor.

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