[Hallicrafters] SX-25 SECOND RF COIL SOS

[Carl]

I suspect you are trying to say that yours has 2 RF stages rather than one 
in use on Band 1.

In that case I believe yours is an early version and the SX-17 schematic 
should be of help as they are pretty much the same radio with the 25 using 
single ended tubes. The later SX-25 as does the SX-28, eliminates the 2nd 
stage in order to reduce overload.

The 17 manual is on BAMA.

Carl
KM1H


----- Original Message ----- 
From: "W. E. ISS" <telegrapher at hotmail.com>
To: <hallicrafters at mailman.qth.net>
Sent: Tuesday, July 01, 2008 11:25 PM
Subject: [Hallicrafters] SX-25 SECOND RF COIL SOS




Hello Sons of Halligan,
     I have been scratching my head for quite a while over an SX-25 I am 
restoring. The broadcast band is completely dead however I have the other 
bands now working well.
     This particular SX-25 has a SECOND standard broadcast band RF coil 
which brings the total to two. As you know, the common schematic floating 
around out there only shows one RF coil for Band 1. Does anyone have a 
schematic for this version of the SX-25? When I began the restoration both 
RF coils for the standard broadcast band were disconnected so I am really 
starting at "Square One" with the Band 1 wiring.
     I own two other SX-25s however both are of the single RF coil for Band 
1 variety so I can't get much hand-holding by looking at the other '25s.
      Any help will be mucho mucho appreciated!

     Thanks.

     W9STB

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