[Hallicrafters] SX-100 arrives

[Mike Lopez]

The 'S' meter should work in all modes , AVC on only . Sounds like yours is
stuck , or toast , or you might check the brittle wiring to the meter and
'zero set' with the back panel control. Tag the coax shield to the ground
jumpered antenna terminal and / or use a TV coax to 300 ohm balun . The
model indication is stamped on the notch filter subchassis , upper rear and
centered above the main chassis. I know you can't see it with the cabinet
on, try an inspection mirror.
Best of Luck,
Mike N8AZC
----- Original Message ----- 
From: "David L. Thompson" <thompson at mindspring.com>
To: <hallicrafters at mailman.qth.net>; "Old Tube Radios"
<boatanchors at theporch.com>
Sent: Tuesday, May 25, 2004 11:45 PM
Subject: [Hallicrafters] SX-100 arrives


> I received a Hallicrafters SX-100 with a non match R-48A speaker.  The
> Sx-100 looks good
> and came with a set of spare tubes.  All tubes inside and out are supposed
> to be good (we will see).
>
> This SX-100 came with a partial book (missing pages 1 and 2 and the
> schematic is cut up).  Two pages in the partial manual say SX-100 Mark I A
> which is some where near mid stream.   I found that 20 and 40 meters was
way
> off on the general dial but once I found how far the band spread is very
> close.  It compares very closely to my RME 6900.   The signals were also
> comparable.
>
> Two things I question...I have coax to the antenna terminal strip.  The
> center goes to antenna 1 terminal but unsure of which to attach the
shield.
> I have found in the past that connecting to antenna 2 and using the jumper
> to ground from 2 but could not tell much difference.  NO I have not
knocked
> out the plug and installed the coax connector (recommended in the December
> 1955 review in QST).   You Sx 100 experts tell me what works best.
Second
> The S meter is stuck on 40 over 9 on or off.  After trying it for a couple
> of hours I see in the partial manual that the S meter
> is supposed to work only on AM.  Is that so? and if so I would guess with
> the AVC on.
>
> I looked on the back of the chassis and there is an area on the right
where
> a serial number might have gone.  There is just a piece of brown paper
that
> has been torn.  Is there a place inside where
> the serial/model type might be shown.   I want to confirm this is a Model
I
> A.
>
> The note is still attached to the bottom (this Rx has been set at the
> factory etc).  And there is a
> tube layout on the left side (from the front).  Wonder why they put it so
> part of it is below the chassis compared to Hammarlund which has the tube
> layout on the rear of the cabinet.  Even there you have to remove the
> cabinet and turn it around (in both cases the same info is in the manual).
>
> 73 Dave K4JRB
>
>
> _______________________________________________
> List Administrator: Duane Fischer, W8DBF **for assistance**
> dfischer at usol.com
> ----
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