From: wa2ise
Newsgroups: rec.radio.amateur.misc

Subject: TM221a, no TX in high power mode fix

Keywords:fix

Message-ID: <1991Dec10.045531.26853
Date: 10 Dec 91 04:55:31 GMT

Sender: news
Organization: AT&T Bell Laboratories

Lines:36





copied from packet:

 Msg# TSF  Size #Rd  Date  Time From   MsgID        To

 8736 BF   1141   0 07-Dec 0512 KD2EJ  28379_WB2QJA INFO
 Sb:TM-221 NO HIGH PWR TXMT.



SB-933



TM-221A No TX in High Power Due to Voltage Drop  4-11-88





Some TM-221A transceivers may intermittently not transmit in

the high power mode.   This condition may be the result of a

voltage drop at the fuse terminals on the power cord.  To

prevent a voltage drop, solder the terminals by following

the procedure below.





1Disconnect the antenna and power supply.



2Open and remove the plastic fuse holder.



3Remove the fuse from the terminals.



4Flow solder between the terminals and the exposed

strands of the cable.



5Allow the terminals to cool and then reinstall the

fuse and close the holder.





This modification may be covered under warranty.

Time required for this modification is 0.24 hrs or less.

© 42788TKC

===============================================================

Note:I haven't tried or verified this, proceed at your own risk. WA2ISE