home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
HamCall (October 1991)
/
HamCall (Whitehall Publishing)(1991).bin
/
amateur
/
icom
/
ic_475.txt
< prev
next >
Wrap
Text File
|
1990-10-14
|
1KB
|
67 lines
Model: IC-475
Division: Amateur
Note: This service bulletin is meant for technical per-
sonnel with experience working on solid state com-
munications equipment. Damage caused by im-
properly installing this modification may cause
ICOM to charge for subsequent repairs to the
product. ICOM does not warrant this modification.
Bulletin #: 24487-001
Subject: Prevent a decrease in RF power output in high am-
bient temperatures
Procedure
1. Replace R55 on the RFYGR board (currently 22 ohm 1/8 watt)
with a 33 ohm 1/8 watt resistor.
Bulletin #: 29587-001
Subject: Prevent PLL unlock at high or low ambient tempera-
tures
Procedure
Write to ICOM's customer service department for a copy of
this service bulletin.
Bulletin #: 3888-002
Date: February 5, 1988
Subject: Self oscillation in transmit
Procedure
Write to ICOM's Customer Service department for a copy of
this service bulletin
Bulletin #: 6888-001
Date: March 8, 1989
Subject: Elimination of CPU noise from radio.
Procedure
Write to ICOM's Customer Service department for a copy of
this service bulletin.