Kenwood TS-820 Manual

1
Modifications for the Kenwood TS-820
TS-820 Fix the problem with the display
Here is somthing you can do if your digital display on the kenwood ts-820 is giving you
a problem..............
1. Remove the counter assembly unit from the 820.
2. Remove both circuit boards from the counter assembly ( upper and lower boards
).
3. Scrape away the varnish from the corners of the boards where the
interconnecting screwes and spacers hold the boards into the case.
4. Reassemble the counter....
That should take care of the problem..
New Display Tube for DG-1
The original display tube (LD-8109) used in the DG-1 digital display for the TS-820
and TS-820S has been discontinued by the manufacturer. However, there is a
replacement tube available. This tube is the LD-8135. It is not a direct replacement for
the original tube. The leads come out of both ends of the display tube instead of just one
as in the LD-8109. Therefore, it will be necessary to replace the complete display unit if
the display tube fails. The part number of the new display unit is X54-1310-00.
Please use this part number when ordering a replacement display unit. The new display
unit is being installed in the current production of the TS-820S and DG-1.
The new display unit (X54-1310-00) is a little more involved to install than the old one.
The installation is as follows:
1. Remove the top cover of the TS-820 (or TS-820S) and set the unit on the bench
so the front panel is facing you.
2. Remove the two screws from the original display unit (save them), unplug the
display unit forom the counter assembly and remove the display unit from the
transceiver.
3. Run the connector of the new display unit through the left bracket (from the
center).
4. Gently (but firmly) push the right side of the display unit throught the right
bracket. ( This is the most difficult part).
5. Gently push the left side of the display through the left bracket.
6. Install the screws from the old display in the mounting bracket of the new
display unit and plug the connector into the counter assembly.
7. Turn on the TS-820 (or TS-820S) and make sure the display tube works
properly.
8. Replace the top cover of the transceiver.
TS-520, TS-820 CW filter select control

Kenwood TS-820 Specifications

General

IF Shift	Yes
Notch Filter	Yes
Digital Display	No
IF Frequencies	8.83 MHz, 455 kHz
Weight	16 kg
Modes	CW, SSB, AM
Receiver Sensitivity	0.25 µV for 10 dB S/N
Image Rejection	60 dB or more
IF Rejection	80 dB or more
Power Supply	DC 13.8 V