Halligan's Hallicrafters International

    Halligan's Hallicrafters International
maintained by Scott Neader, KA9FOX





From: "Mark Bell" <bell@blazenet.net>
Date: Thu, 3 Jan 2002 19:02:05 -0500
Subject: [Hallicrafters] Phasing Type SSB Generators
Message-ID: <000b01c194b3$0c145340$ea27a5d0@blazenet.net>


As I'm finishing up my 51SB-B, I've a question to thow out to the group.

What type of SSB generator will produce the best sideband suppression,
filter or phasing?

I've several old ARRL handbooks and they address the cost, ease of
adjustment etc of both types, but really don't say which is better
at sideband suppression.   They indicate both are equal.

OK, maybe that's what ought to be, but what have some of you
found to be realistic?

73 Mark K3ZX



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From: "Mark Bell" <bell@blazenet.net>
Date: Thu, 3 Jan 2002 18:54:15 -0500
Subject: Re: [Hallicrafters] Sick SX-101A
Message-ID: <002601c194b1$f4a8a5e0$ea27a5d0@blazenet.net>


> As you tune the oscillator coil, the oscillator output will change slowly
on
> one side of the peak, and will abrupt quit [and abruptly restart when
tuned
> back] on the other side of the peak.  To ensure easy and reliable starting
> of the crystal oscillator, especially with variations in temperature, tube
> aging, and component value drift, it is important to be tuned a bit down
> from peak output on the side where the oscillator output falls off slowly
> [the gentle side].  73.
>
> George KE8RN, who is old enough to recall this.

Personally, I'm glad there are people like George on this NG!

I've read those same instructions in a number of manuals, and I don't
recall it ever explaining why to do that, just to do it.

That's what I like about BA restorations -- always learning something !!

Thansk George!

73 Mark K3ZX


>


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From: "Misic, George J." <GMisic@medrad.com>
Date:  Thu, 3 Jan 2002 17:59:04 -0500 
Subject: RE: [Hallicrafters] Sick SX-101A
Message-Id: <02Jan3.175634est.119080@hq.medrad.com>




-----Original Message-----
From: Rick Smedberg [mailto:smedberg@t-one.net]

> This is directed to those using H-C rcvrs with 1600 and 1700 xtals in the
> second converter.
What does "adjust for half output on the ""gental slope"". mean,really??
I'm just not old enough, i guess.
73 rick

Rick,

As you tune the oscillator coil, the oscillator output will change slowly on
one side of the peak, and will abrupt quit [and abruptly restart when tuned
back] on the other side of the peak.  To ensure easy and reliable starting
of the crystal oscillator, especially with variations in temperature, tube
aging, and component value drift, it is important to be tuned a bit down
from peak output on the side where the oscillator output falls off slowly
[the gentle side].  73.

George KE8RN, who is old enough to recall this.


List Administrator: Duane Fischer, W8DBF **for assistance**
dfischer@usol.com
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From: Rick Smedberg <smedberg@t-one.net>
Date: Thu, 03 Jan 2002 16:59:07 -0500
Subject: Re: [Hallicrafters] Sick SX-101A
Message-ID: <3C34D42B.A66@t-one.net>


JOHN MIVERSOM IVERSON wrote:
> 
> This is directed to those using H-C rcvrs with 1600 and 1700 xtals in the
> second converter.
> The origial manual is very informative as to proper adjustment of the
> second converter oscillator coils.
> The slugs for the coils can be accessed from the top of the coil which is
> mounted on the converter sub-chassis.
> When an apparent xtal failure occurs, follow the adjustment as shown.
> read the part where the xtal will quit and follow the directions.
> sorry for such a long thread,, it needed to be said.
>                                       73      jack   K0EWU
Don't feel bad i had a heck of a time adjusting my crystals and i still
don't have them perfect. I took me a minuet to relize i supose to
be adjusting for proper crystal voltage output for balanced mixing.
If you tune to the wrong spot on the coil you will change the crystal
frequency so much you can't receive ssb. I still don't have it just
right.
What does "adjust for half output on the ""gental slope"". mean,really??
I'm just not old enough, i guess.
73 rick

-- 
Rick Smedberg WA8YLZ
P.O. Box 148 Custer, MI 49405
smedberg@t-one.net
http://www.t-one.net/~smedberg
Grid Square EN63vw

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From: JOHN MIVERSOM IVERSON <jackiv@juno.com>
Date: Thu, 3 Jan 2002 08:24:20 -0600
Subject: Re: [Hallicrafters] Sick SX-101A
Message-ID: <20020103.082420.2024.0.jackiv@juno.com>


This is directed to those using H-C rcvrs with 1600 and 1700 xtals in the
second converter.
The origial manual is very informative as to proper adjustment of the
second converter oscillator coils.
The slugs for the coils can be accessed from the top of the coil which is
mounted on the converter sub-chassis.
When an apparent xtal failure occurs, follow the adjustment as shown.  
read the part where the xtal will quit and follow the directions.
sorry for such a long thread,, it needed to be said.
                                      73      jack   K0EWU

List Administrator: Duane Fischer, W8DBF **for assistance**
dfischer@usol.com
---
Hallicrafters Collectors International: http://www.w9wze.org
---
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This page last updated 18 Jul 2001.