Ts-830S Operation On 240 V Ac; Ts-830S Noise Blanker Optional Improvements - Kenwood TS-830 Survival Manual

7. Make sure You have no solder shorts or bridges, make sure You have taped or insulated any
bare wire connections. Mount the new switch in one of the spare holes on the back of the radio.
Install the top and bottom covers.
The modification works great, one position on the new switch and everything is normal, in the
other position the CW filter is placed in-line regardless of the position of the mode switch. To
use the CW filters on RTTY/AMTOR I found I had to turn the IF SHIFT control CW to about
the 9:30 position to center the tones in the passband. If you need an even narrower passband,
just tighten it up a little with the VBT.
9.7

TS-830S Operation on 240 V AC

(Author: Trio-Kenwood Communication, Inc.)
To operate the TS-830S on 240 V AC, the power transformer split primaries must be rewired
from parallel to series connection.
Procedure:
1. Unplug the AC power cable.
2. Remove the bottom cover.
3. Remove the jumper wires between the two ø terminals and two 120 terminals on the bottom
of the power transformer.
4. Connect the adjacent 120 and ø terminals at the middle of the transformer. This will provide
240 V AC operation.
For 220 V AC operation, connect the adjacent 100 to ø winding.
5. Change the AC fuse from 6 A to 4 A. Tag the power cord at the back of the radio to indicate
that the transformer is strapped for 240 V AC, and the power fuse should be 4 A, and not 6 A.
6. Replace the bottom cover and reconnect power to verify your work.
9.8

TS-830S Noise Blanker Optional Improvements

(Author: Trio-Kenwood Communication, Inc.)
Receiver Cross-modulation while using the noise blanker may be improved by these optional
component changes and additions. Realignment is not required.
30