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<DIV><FONT size=2 face=Arial>Thanks Gary, that clears up some questions. I'd
always heard that damage could be done to an AA5 if a burned out pilot bulb were
not replaced.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Next question: Should a 35W4 always have a pilot
bulb connected, as in an AA5, for proper operation. My Knight Ocean Hopper
has a 35W4, but no pilot bulb.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Mike, W6MAB</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=k4oah@mindspring.com href="mailto:k4oah@mindspring.com">Garey
Barrell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=boatanchors@puck.nether.net
href="mailto:boatanchors@puck.nether.net">boatanchors@puck.nether.net</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, February 04, 2011 7:38
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Boatanchors] #44/47 Buld
replacement with LEDs</DIV>
<DIV><BR></DIV>The 'tap' on the filament is NOT a 'center tap'.<BR><BR>The
problem with this system is that of course the bulb is subjected to <BR>the
initial surge of current when filaments are cold, causing that flash <BR>that
you see at turn-on.<BR><BR>Worse still is that when the bulb inevitably burns
out, the excess <BR>current is forced through that portion of the filament in
the rectifier, <BR>causing it to fail open. LOTS of rectifier tubes
killed when the owner <BR>noticed the bulb was out, but didn't want to take
the radio to the shop <BR>for repair! Then he got to pay for a bulb AND
a tube! :-)<BR><BR>73, Garey - K4OAH<BR>Glen Allen, VA<BR><BR>Drake 2-B,
2-C/2-NT, 4-A, 4-B, C-Line<BR>and TR-4/C Service Supplement CDs<BR><<A
href="http://www.k4oah.com">www.k4oah.com</A>><BR><BR></BLOCKQUOTE></BODY></HTML>