2
In the TS-520SE, the heater switch has been replaced with a CW WIDE/NARROW
select switch. For those operators who desire this type feture for their transceiver, the
following information may be considered as a guideline.
TS-520S series transceivers
1.
A minature SPDT switch may be installed at the operators preference, on the
rear side, or bottom panel. Use this to switch the CW or SSB filters by wiring
the BROWN lead, which normally is transferred to the CW terminal on the IF
unit, between the SSB filter, for WIDE , and CW for NARROW>
2.
A Traditional solution has been to use the FIX CH switch, position 3 and 4 for
filter switching. This may be donw by completely rewireing the switch, or by
leaving the switch wiring and the filter wiring as for normal operation, and
bridging the following terminals:
3.
A. FIX CH C terminal to IF SSB Terminal
4.
B. FIX CH 4 terminal to IF CW terminal
5.
Placing the FIX CH switch to 4 will operate the SSB
filter
6.
in CW mode.
TS-820S Series Transceivers
1.
Similar to the TS-520 series, a miniature SPDT toggle switch may be installed at
the operators preference a the rear or on the obttom cover.
2.
The FIX CH switch, or Digital Hold switch may be rewired to control the CW
wide/narrow function
On the MODE switch, S6-1, the SSB filter control is GREEN, and the CW filter control
line is GREY. Break the GREY line and connect it from the MODE switch to the SPDT
common terminal. Connect the GREY line to the IF unit ot one terminal, and bridge tht
GREEN SSB line to the other Switch terminal.
Installing AUX Band in TS-820 (RX only)
Author:
Trio-Kenwood Communication, inc.
Service bulletin no. 11 13-1-1977
The following information is for the installation and alignment of the AUX band inthe
TS-820. This extra band will be for receive only. Reference will be made to schematics
and board layouts as shown in the Service Manual.
INSTALLATION
1.
Remove the top and bottom covers.
2.
Remove the Connectors from the PLL Assembly.
3.
Remove the PLL assembly and set it aside.
