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Hi Barry,=20
Try connecting a shorting plug to the relay control input on the SB-200. =
If the amp
is working properly, you should hear the T/R relay close, and see an =
indication
of idling current on the plate current meter when you connect the =
shorting plug. If=20
nothing happens when you do this, then there is a problem in the amp. If =
the=20
T/R relay closes, and you see idling current, then you can apply drive =
from the=20
exciter to see if the amp works (make sure you remove the RF drive from =
the=20
exciter before you unkey the amp).=20
73 de Mike, W4EF................
----- Original Message -----=20
From: Barry Schieferstein=20
To: amps@contesting.com=20
Sent: Tuesday, November 27, 2001 6:24 PM
Subject: [AMPS] TS-940 and SB-200
Having read everything I can find here and elsewhere about hooking up =
a TS-940 to a SB-200 I have decided to ask fo help. The remote output =
of the 940 uses pin 6 for ALC, pin 4 for the amp relay, and pin 2 as the =
ground. With this hookup I get no closure or voltage between pins 2 and =
4. I do get closure between 4 and the outside of the din connector. =
When hooked up to the SB-200 there does not seem to be any keying (ie. =
no plate current). There is HV on the amp and everything else works on =
the 940. The amp was supposedly in working order when taken off-line =
years ago. Any suggestions as to where to start looking?
Thanks,
Barry KW8W
barrys@core.com
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<DIV>
<DIV><FONT face=3DArial size=3D2>Hi Barry, </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Try connecting a shorting plug to the =
relay control=20
input on the SB-200. If the amp</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>is working properly, you should hear =
the T/R relay=20
close, and see an indication</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>of idling current on the plate current =
meter when=20
you connect the shorting plug. If </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>nothing happens when you do this, =
</FONT><FONT=20
face=3DArial size=3D2>then there is a problem in the amp. If the =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>T/R relay closes, and you see idling =
current, then=20
you can apply drive from the </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>exciter to see if the amp works (make =
sure you=20
remove the RF drive from the </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>exciter before you unkey the amp). =
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>73 de Mike, =
W4EF................</FONT></DIV></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3DBarryS@Core.Com href=3D"mailto:BarryS@Core.Com";>Barry =
Schieferstein</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Damps@contesting.com=20
href=3D"mailto:amps@contesting.com";>amps@contesting.com</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, November 27, =
2001 6:24=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [AMPS] TS-940 and =
SB-200</DIV>
<DIV><BR></DIV>
<DIV><FONT size=3D2>
<DIV><FONT size=3D2>Having read everything I can find here and =
elsewhere about=20
hooking up a TS-940 to a SB-200 I have decided to ask fo help. =
The=20
remote output of the 940 uses pin 6 for ALC, pin 4 for the amp relay, =
and pin=20
2 as the ground. With this hookup I get no closure or voltage =
between=20
pins 2 and 4. I do get closure between 4 and the outside of the =
din=20
connector. When hooked up to the SB-200 there does not seem to =
be any=20
keying (ie. no plate current). There is HV on the amp and =
everything=20
else works on the 940. The amp was supposedly in working order =
when=20
taken off-line years ago. Any suggestions as to where to start=20
looking?</FONT></DIV>
<DIV><FONT size=3D2>Thanks,</FONT></DIV>
<DIV><FONT size=3D2>Barry KW8W</FONT></DIV>
<DIV> </DIV>
<DIV><A=20
href=3D"mailto:barrys@core.com";>barrys@core.com</A></DIV></FONT></DIV></B=
LOCKQUOTE></BODY></HTML>
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