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<DIV>Hmm,</DIV>
<DIV> </DIV>
<DIV>My last post about the noise blanker may be wrong. True the blanker is not
the same as the SB104 blanker.</DIV>
<DIV> </DIV>
<DIV>But, maybe this blanker operates as a side chain as opposed to the SB104
blanker. This means the noise and threshold comments I made are not true. It
depends where the output of the blanker is connected: If connected to a switch
(transistor or diode) that shorts the IF output then it operates as a side
chain.</DIV>
<DIV> </DIV>
<DIV>In the SB104 blanker, the signal is passed thru a MC1350
IC which has about 50dB gain. Then the signal is attenuated to provide
unity gain. The blanking pulse is applied back to the IC control pin which
lowers the gain of the IC. The IC is always in the signal path. This
is not side chain. </DIV>
<DIV> </DIV>
<DIV>Chris KL7DM</DIV>
<DIV> </DIV>
<DIV>
<DIV>In a message dated 3/15/2014 7:00:53 P.M. Pacific Daylight Time,
pbrickey@verizon.net writes:</DIV>
<BLOCKQUOTE
style="BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><FONT
style="BACKGROUND-COLOR: transparent" color=#000000 size=2
face=Arial>Hi,<BR> I have had quite a few questions about this, so I
thought I would send out the schematic that is in my SB-303 manual.<BR>It is
attached.<BR> 73's,<BR>
Peter<BR><BR><BR>_______________________________________________<BR>Heath
mailing
list<BR>Heath@puck.nether.net<BR>https://puck.nether.net/mailman/listinfo/heath<BR></FONT></BLOCKQUOTE></DIV></FONT></BODY></HTML>