[Heathkit] sb100 dial help

[Glen Zook]

All of the Heath SB-1XX transceivers, as well as the SB-30X receivers and SB-40X transmitters, use the same basic dial.  This dial is basically the same as Collins used on the "S" Line and KWM-2- series equipment.  The HW-101 did go to a different dial mechanism than was used in the HW-100.  However, the mechanism used in the HW-100 was definitely different from that used in the SB-Line although Heath did receive a patent for the design used in the HW-100.

The HW-102 was supposedly being considered.  However, it did not reach actual production. 
 
Glen, K9STH


Website:  http://k9sth.com


________________________________
 From: john <johnmb at nc.rr.com>
To: Eddy Swynar <deswynar at xplornet.ca>; Ronnie Hull <w5sum at glowbugs.com> 
Cc: Heathkit at mailman.qth.net 
Sent: Friday, December 30, 2011 4:53 PM
Subject: Re: [Heathkit] sb100 dial help
 

Hi Eddy and Ronnie

The strange thing is that Heath was very proud of that drive in the SB100 
and took out a patent on it.  As I recall the 101 and 102 (and the 
hw-series) were changed to use Jackson drives. however.

John


At 11:23 AM 12/30/2011, Eddy Swynar wrote:
>Hi Ronnie,
>
>The dial drive is, IMHO, the Achille's Heal of an otherwise great set-up 
>like the Heath "SB" line...you're not alone in your dial woes, believe me...!
>
>It's been many years since I did any re-adjustments in that regard, but it 
>seems to me you first had to remove the knob for the LMO, then loosen 
>ever-so-slightly the large nut holding the shaft bearing in place that 
>connects the knob to the dial itself...
>
>If I recall correctly, you then have to move the bearing up / down, until 
>such time as some resistance is felt when in the downward movement, 
>indicating that the flange of the dial drive has positively engaged with 
>the inside of the dial itself. When it has, carefully re-tighten the panel 
>bearing nut, & re-install the knob...
>
>Make a few turns with it: if it's loose-feeling & fails to drive the dial 
>100% of the time, repeat the process---only this time push down on the 
>bearing ever-so-slightly, to get a more positive engagement. If there's an 
>inordinate amount of effort needed to turn the knob/dial---or if it just 
>plain feels too tight---raise the bearing up a tad, re-tighten, then check 
>again.
>
>It CAN be a tedious process, certainly not aided & abetted by a dial that 
>may well have seen better days...but it sounds like yours is a "cherry 
>pick" in terms of condition, so it may only need VERY minor tweaking to 
>get it right again...
>
>~73~ de Eddy VE3CUI - VE3XZ
>
>
>
>************************************************************************************************************************
>
>
>
>On 2011-12-30, at 11:11 AM, Ronnie Hull wrote:
>
> > okay fellers put on your thinking caps
> >
> > I have become the proud father of a nearly mint ( cosmetically ) SB100, 
> speaker and p/s. RX's well and TX's well.  No issues with any of that.
> >
> > HOWEVER, the dial slips but not all the time.  Looking down inside of 
> it and turning the knob I can see it spinning the shaft going into the 
> LMO. Then, the whole thing quits turning. I can rock the knob back and 
> forth and it will catch again and and start turning again. It doesn't do 
> it in the same spot.
> >
> > I did not get a manual with this rig and I'm totally unfamiliar with 
> how that all goes together.  I am headed to hardbor freight to get some 
> long hex keys so I can get down in there to make sure all is tight.
> >
> > Suggestions anyone?
> >
> > thanks in advance
> >
> > Ronnie
> > ______________________________________________________________
>
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