[Hallicrafters] Hallicrafters SX-88

[Greg Gore via Hallicrafters]

Phil Nelson is more of a television hobbyist and his SX-88 restoration which turns up on the Internet was not a good complete restoration. He stated in his write-up the 2nd converter deck looked like too much work to remove and he "hoped" leaving the original capacitors in there would not be a problem. Also, Phil Nelson did not remove the 1st and 2nd RF stage modules to replace those screen and plate bypass capacitors and made no mention of that. A far better report of a more comprehensive Hallicrafters SX-88 restoration with a follow-up performance report can be found by Jay Rusgrove; W1VD at: http://www.w1vd.com/HallicraftersSX-88.html


Regards, Greg
WA1KBQ


-----Original Message-----
From: Jim Liles <hallicrafterssr2000 at k9axn.com>
To: Joe Connor <joeconnor53 at yahoo.com>; hallicrafters <hallicrafters at mailman.qth.net>; Roy Morgan <k1lky68 at gmail.com>
Sent: Thu, Jul 16, 2015 9:00 pm
Subject: Re: [Hallicrafters] Hallicrafters SX-88


Thanks for responding Joe, I’ll have a look and get back.

Kindest regards Jim
K9AXN 

-----Original Message----- 
From: Joe Connor via Hallicrafters 
Sent:
Thursday, July 16, 2015 7:38 PM 
To: Jim Liles ; hallicrafters at mailman.qth.net ;
Roy Morgan 
Subject: Re: [Hallicrafters] Hallicrafters SX-88 

Jim, Phil Nelson
has an excellent article on restoring an SX-88 that contains some of the
information that you are seeking.
Joe Connor

Hallicrafters Model SX-88
Communications Receiver (1954)

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Hallicrafters Model SX-88 Communications Receiver (1954)Hallicrafters Model
SX-88 Communications Receiver (1954)                             Owners Manual 
QST Review What's the finest Hallicrafters radio ever m... |
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www.antiqueradio.org | Preview by Yahoo |
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     On Thursday, July
16, 2015 8:22 PM, Jim Liles <hallicrafterssr2000 at k9axn.com> wrote:
   


Good
evening Roy,

I have some questions regarding the SX-88.  

First have you done
a sweep analysis of the 50Kc I.F. system or do you know of someone who has?

Can
anyone confirm that the 50Kc I.F. charts in the book are correct?

Looking at
the design I would expect the shape factor for the system to be close to 2/1
which is very close to the crystal filters of that time.  Is that a correct
analysis?

Has anyone measured the Q of the first, second , and fourth 50Kc
transformer pairs as well as the third pair?

More but sure would like to hear
from a person who has had one on the bench.  That radio is probably the most
enigmatic of the Hallicrafters bunch.  Always wanted to put one through sea
trials.

Kindest regards Jim K9AXN 

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