[Hammarlund] HQ-129-X Question

[D C *Mac* Macdonald]

Set screw tightened with dial in
wrong position on the shaft?
 

* "An unarmed man can but flee *
* from evil. Evil can NEVER be *
* overcome by flight FROM it." *


* * * * * * * * * * *
* 73 - Mac, K2GKK/5 *
* (Since 30 Nov 53) *
* Oklahoma City, OK *
* USAF, Ret (61-81) *
* * * * * * * * * * *








----------------------------------------
> From: km1h at jeremy.mv.com
> To: gzook at yahoo.com; hammarlund at mailman.qth.net; k1lky at earthlink.net
> Date: Mon, 29 Nov 2010 12:12:31 -0500
> Subject: Re: [Hammarlund] HQ-129-X Question
>
> 200 is not fully open on BS.
>
> Ive been looking for late 129/140 BS dials for awhile so I can use 15M.
> in the 129's and 120's.
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Glen Zook" 
> To: "hammarlund List" ; "Roy Morgan"
> 
> Sent: Monday, November 29, 2010 11:43 AM
> Subject: Re: [Hammarlund] HQ-129-X Question
>
>
> The manual on the HQ-129X states that the bandspread is to be set at 200
> which, on the original receivers, was fully open. Somewhere during
> production the bandspread dial was changed to have the logging scale 0 to
> 100 instead of 0 to 200. The original HQ-129X bandspread dials had the 80,
> 40, 20, and 10 meter bands calibrated. The very last versions had the 15
> meter band added.
>
> The actual quotation, from page 16 of the manual (I have an original) is:
>
> "The front row of adjustments, shown on the chart (Fig. 8), control the H.F.
> Oscillator circuits and consequently the dial calibration. To check these
> adjustments the band spread dial must be at 200, since that is the setting
> at which the main dial was calibrated."
>
> On page 4 the band spread dial is described as:
>
> "An exceptionally wide band spread of 310 degrees supplied by a special 9
> section condenser, is provided on the 4 higher frequency ranges. The band
> spread dial has 5 scales. Four of these are directly calibrated for the 80,
> 40, 20, and 10 meter amateur bands. The fifty scale is an arbitrary 0-200
> division scale, provided for making up calibration charts for other bands,
> such as the short wave international broadcast bands. It is also of use in
> logging stations."
>
> My original manual has handwritten notes changing the 200 reading on the
> band spread to 100.
>
> Glen, K9STH
>
> Website: http://k9sth.com
>
>
> --- On Mon, 11/29/10, Roy Morgan wrote:
>
> > From: Roy Morgan 
> > Subject: Re: [Hammarlund] HQ-129-X Question
> > To: "hammarlund List" 
> > Date: Monday, November 29, 2010, 1:07 AM
> >
> > On Nov 25, 2010, at 2:45 PM, Carl wrote:
> >
> > > Thats a good possibility but it would also affect GC
> > which is where
> > > its
> > > aligned.
> > >
> > > The BS cap could be out of alignment, it has to be
> > exactly centered.
> >
> > Carl said "centered". Not "fully open". Do I
> > remember that unlike
> > many bandspread arrangements, the HQ-129 is aligned with
> > the
> > bandspread capacitor HALF MESHED when the main tuning dial
> > (and
> > bandspread dial) is/are set to the appropriate set
> > point? If so,
> > maybe someone has changed the relationship between the
> > bandspread dial
> > and the capacitor.
> >
> > Many radios are set up so the bandspread dial is at its
> > upper
> > frequency, the bandspread cap is at it's lowest capacity
> > position, and
> > the logging dial is at 100, and the main dial is set at the
> > upper end
> > of the section of the band to be spread. Often this
> > is at the upper
> > end of the ham band as it was at the time of
> > design/manufacture.
> >
> > Worth checking.. don't rely on my (possibly feeble) memory
> > here.
> >
> > Oddly, a TMC GPR-92 I have here uses frequencies above the
> > ham band
> > edges, e.g. 4.1 mc for 80 meters. Maybe they
> > accounted for MARS use.
> >
> >
> > Roy
> >
> >
> > Roy Morgan
> > k1lky at earthlink.net
> > K1LKY Since 1958 - Keep 'em Glowing!
> >
> >
> >
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>
>
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