[HBR] HBR-11 Template

[Jay Helms]

Scott:

Ted Crosby to the best of my knowledge never created a template for his 
HBR 8/11 model, and I have never seen one created by someone else.

The first chassis template was created for the HBR-13 (his final design) 
by W3FX(SK) and is included in "Recollections".  I have chassis & panel 
templates for my  HBR-XX (an upgrade to the HBR-13) but they are for a 
full-size 19-in rack panel and associated chassis; the larger 
panel/chassis lets the receiver ventilate much better, and the interior 
runs about 10- degrees less than the little cabinet used by Ted.  
Frequency stability in all hot cathode designs is a function of heat 
rise from cold-start to "operating conditions".  Way-back-then everybody 
simply learned to live with it, but in our present digital world (where 
frequency stability is much easier to create) the aggravation of the 
warm-up frequency shift looks huge, but it is exactly what it was back 
in the '60s.

Sad to say, you are probably on your own on this issue.  I will send you 
my templates if you want to use them for ideas; just let me know.  Those 
in "Recollections" are for illustration only and are not at the needed 
1:1 scale.

73 de w6hht (since 1948)



On 4/12/2013 1:45 PM, LeeCraner at aol.com wrote:
> Scott:
>   
> Sorry, I forgot to respond to this question in your earlier email.   No, I
> don't have the layout.  Drop a note to Jay Helms, though.  He  may have one.
>   His email address is _cerrogordo at iscweb.com_
> (mailto:cerrogordo at iscweb.com) .
>   
> 73
> Lee WB6SSW
>   
>   
> In a message dated 4/12/2013 12:59:40 P.M. Pacific Daylight Time,
> whitebear1122 at comcast.net writes:
>
> Does  anyone have an HBR-11 chassis  template that they can share with  me?
>   I have the front panel and front chassis laid out, now I'm laying  out the
> chassis top.  Thanks. 73, Scott WA9WFA
>
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