[Hallicrafters] SX-17 S-meter and variations

[jeremy-ca]

----- Original Message ----- 
From: <HallicrafterSX28 at aol.com>
To: <hallicrafters at mailman.qth.net>
Sent: Thursday, March 13, 2008 3:20 PM
Subject: [Hallicrafters] SX-17 S-meter and variations


> Both the SX-17 and  SX-28 (also the SX-16 ,24 and 25)share the same
> S-meter.Anybody who disagrees with this statement needs to open up an 
> ORIGINAL  SX-17
> S-meter and compare with an ORIGINAL SX-28 S-meter .Internally they are 
> the
> same with the exception of the dial scale.

Strange but both my 1941 SX-28 and 1946 SX-28A have meters that the needle 
rest to the right with power off. Examining several photos on the web show 
the same.

My SX-16, SX-17, SX-24, SX-25, S-27 and S-32 all rest to the left. Somewhere 
I have the external meter for a S-20R, I'll have to check that also. The 
December 1940 QST ad ( which is my birthday month/year and sits on the desk) 
also has the meter needle at the right.


>
> It is interesting that in a previous post somebody wrote that "The only
> meters that appear similar are the SX-16, SX-24, SX-25, S-27 and
> S-32. Ive  probably missed a few variations of those. The SX-28 is 
> different
> as it has a  "normal" left hand zero rest"
> They probably don't know that an SX-32 is  the same rcvr as the SX-28  BUT
> with LESS features(ANL circuitry  etc) .However both the 28 and 32 have 
> the
> same type of s-meter.


The "somebody" meant S-36.


>
> As far as the variations, I've noted at least two.The first one is the 
> early
> version based on the SX-16 ,ANL control is NOT marked as "ANL" on the 
> front
> panel,band shaft doesn't extend to the rear apron,the circuitry is exactly
> like an SX-16,the Noise limiter tube is an 6J5 triode connected  as diode
> ,knobs have pointers .I've used the SX-16 schematic to work on this
> type(components values exactly match).
> The later run has no pointers on knobs,ANL control is marked as "ANL"   on
> the front panel,6H6 used as Noise Limiter..There are significant 
> electrical
> differences .The commonly avaliable SX-17 manual covers this model.
> Then there is also the SX-17F  which is the FCC version.
> AMK


Thanks, I have the later version.

Carl
KM1H
aka "somebody"


>
>
>
>
>
>
> **************It's Tax Time! Get tips, forms, and advice on AOL Money &
> Finance.      (http://money.aol.com/tax?NCID=aolprf00030000000001)
> ______________________________________________________________
>