[AMPS] Ameritron AL-1500
w7ry
w7ry@netzero.net
Sat, 26 Aug 2000 22:35:25 -0700
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Well the amp is fixed.=20
The resistors were all ok. The Schematic is wrong. There is only 1ea. =
1.5 Ohm resistor. The diode that is installed on the B- rail to ground =
was dead shorted.=20
That is what was causing the meters to not read correctly.
The step start resistor was blown to bits as well.=20
Glad that the internal fuse in the 8877 blew instead of some expensive =
diodes or resistors !
73 to all and thanks for the information.
Jim W7RY
-----Original Message-----
From: w7ry <w7ry@netzero.net>
To: amps@contesting.com <amps@contesting.com>
Date: Saturday, August 26, 2000 4:07 PM
Subject: [AMPS] Ameritron AL-1500
=20
=20
Hello to the group.
=20
I have an Ameritron AL-1500 serial number 882. The tube is =
defective. It has a date code of 9218
=20
I have also noticed that there is a resistor missing on the metering =
board. The schematic calls for 2 ea. 1.5 Ohm resistors for R-3 & 4. In =
this amp, there is only one resistor. Which is correct ? The amp with 1 =
resistor or the schematic ?
=20
Thanks and 73
Jim W7RY
=20
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<DIV><FONT color=3D#000000 size=3D2>Well the amp is fixed. </FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT><FONT size=3D2>The resistors =
were all ok.=20
The Schematic is wrong. There is only 1ea. 1.5 Ohm resistor. The diode =
that is=20
installed on the B- rail to ground was dead shorted. </FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>That is what was causing the meters to not read=20
correctly.</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>The step start resistor was blown to bits as well.=20
</FONT></DIV>
<DIV><FONT size=3D2></FONT> </DIV>
<DIV><FONT size=3D2>Glad that the internal fuse in the 8877 blew instead =
of some=20
expensive diodes or resistors !</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>73 to all and thanks for the=20
information.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Jim W7RY</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: =
5px">
<DIV><FONT face=3DArial size=3D2><B>-----Original =
Message-----</B><BR><B>From:=20
</B>w7ry <<A=20
href=3D"mailto:w7ry@netzero.net">w7ry@netzero.net</A>><BR><B>To: =
</B><A=20
href=3D"mailto:amps@contesting.com">amps@contesting.com</A> <<A=20
=
href=3D"mailto:amps@contesting.com">amps@contesting.com</A>><BR><B>Dat=
e:=20
</B>Saturday, August 26, 2000 4:07 PM<BR><B>Subject: </B>[AMPS] =
Ameritron=20
AL-1500<BR><BR></DIV></FONT>
<DIV><FONT color=3D#000000 size=3D2>Hello to the group.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>I have an Ameritron AL-1500 =
serial =20
number 882. The tube is defective. It has a date code of =
9218</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>I have also noticed that there =
is a resistor=20
missing on the metering board. The schematic calls for 2 ea. 1.5 Ohm =
resistors for R-3 & 4. In this amp, there is only one resistor. =
Which is=20
correct ? The amp with 1 resistor or the schematic ?</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT> </DIV>
<DIV><FONT color=3D#000000 size=3D2>Thanks and 73</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>Jim W7RY</FONT></DIV>
<DIV><FONT color=3D#000000 =
size=3D2></FONT> </DIV></BLOCKQUOTE></BODY></HTML>
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