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AMERITRON AL811 User manual

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hps://www.ctrengineeringinc.com/ameritron-811-811h-upgrade-kits/
- [email protected]
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,,1)34)3(")###"&#!) (
Overview
####()#+"##+)*SSB and
CW only(&#-#)#!3#)+#.++*#)*+
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##"& ##!"!+" !#*"#*9#!
#(C##"&#+!#) (/ ##
*#*+(
AL811
5+#9(#))9:FG+#.+#
#+(#*5"#)##. ,HC(This kit has
one chassis mount RF-rated 25W resistor, one 0.01uF ca acitor, and hardware. In addi#on you will need a 0.113
to 0.125” (1/8”) drill to add one hole for 4-40 machine screw clearance. 
AL811H
!+#9(I+#.##!.+"#+#"+*:
#+*1#)9(Any swam ing resistance is o #onal;
it just makes neutraliza#on less cri#cal and closer matches drive level to 100W exciters. With bias changes the
swam ing is not required.
NOTE:  
 !"#$%
&'()*
#"9&"#0")*###/" (
+!#+&"&#+""")0
(
Neutralization


 !"#$$"#%
&'()"*+"
, +- .+/0'
'()1%(1
Major Concerns
There have been dozens of instances of hard faults in tubes damaging radios.##++
#+."#("#!+"#!#+#
+#("#!+" C?J"0""."0.
(EK#&*!#L##!-."+"#"
(
+"#!M#*#"!)#!#!
*+"(!#.)".#+*#!
"##(J###&*#+#"#(
!#9""#(##!#!
+(#"#*#&"#."(#55"#
"*##*# (.!"."#)*
*#"#"#(#"#*" #(" ##"
"##"()+##""##!#)5##.##"!-"#
+)N 9)+#""( #*##"
#(
#"+##(I"""#(
"".+)5##.#(##"###*7##!)5*
#"&#+)+#"(#" " +!
)#8!!))8#(#"# **#")
#.))#"###<#(
#!-""(#+#.
"""#(*#""#CI.#)
#""("#HJ"O#&*")
*""("#HJO##)*P"
(


$I'
This kit does the following:
(' #)Q:*R>#?#"+#!""###+#(Littelfuse gas
discharge tubes (GDT) surge arrester devices protect personnel and equipment from damaging high
voltage transients induced by lightning, inductive switching, or electrostatic discharge.##
#+;:*#+# (#+#&>?E##+*8!!"(>?E#
"(>?E#9"*.+"5#"9
(' #"#"#*#-9###(##"&"
(##)#+"(77/7?J
M##!"###(
;(' "###+#(G#*#+!S"")&"+&/?);(@*
:)8B+##(!##!+##.JHD!##
##))"(!#*#!+##+.
)##(#+5-#""+(#)+;5
<9# ".=5
=(' #&*"(#"##
##(##H=##( #"#!#!##
1(#"#*&!"&!#
:('  ##!."*E#!
##*#(#*#) QR#"*!8#
+9&)#>?E#+#
<(' 7#&>?!)!"CI""
F(' Tshould*/JAE#!!"&*!""##+(/JAE#
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#*"(+" #)##+(##+!&")#
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