TS830.2


6) This change permits automatic disabling of a linear amplifier  during
full  break-in  cw  operation.  This  is desirable since the relays in a
linear cannot properly follow each keyed character element.  This change
should also be done if AMTOR operation is contemplated.

Assuming that your 930 has the aux. relay board in it, merely  wire  the
+28 volt lead to the relay coil in series with the extra contacts of the
"FULL-SEMI" switch.

7) For AMTOR operation, the T-R switching speed must be increased.

2 suggested changes are to remove C-500  (4.7uf)  on  the  SIGNAL  BOARD
(located  top  center  near connector 30), and to ground the junction of
R-476 / Q-100.

8) In early units, the WARC band transmit was not enabled.  If  this  is
the  case, solder a jumper from pin 12 of IC-23 to ground on the DIGITAL
UNIT.  (Ground can be obtained at pin 8 of IC-24).

9) Transmit can be enabled on all frequencies between 1.5 and 30 MHz for
MARS and transverter use by adding two jumpers on the DIGITAL UNIT:

        Connect pin 9 of IC-11 to pin 12 of IC-21.
        Connect pin 9 of IC-12 to pin 12 of IC-22.
CONTINUED IN FILE TS830.5