[Heathkit] sb-221 problem

[Mark S Graalman]

Sounds like the relay input contacts may need cleaning.
 The short you see on the output is normal, its the 1 mH
choke normally placed on the output of the network
to prevent B+ from showing up at the output connector
should the B+ blocking capacitor fail.

Mark  WB8JKR


On Thu, 26 Feb 2004 23:46:17 -0500 "paul" <mglassman@cinci.rr.com>
writes:
> amp was working fine. then rig swr went to infinity on xmit when i 
> tripped the amp. when i "pass through" the amp without closing the 
> ant relay, the rig output makes it through the amp to the antenna no 
> problem and perfect swr.. with the relay tripped,no amp output and 
> high swr..  tested the rf out and with the power off and when i hand 
> close the relay, the output jack shows a dead short. any ideas? i 
> pulled the finals and the results are the same. tnx  paul w8jn
> 
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