[HBR] Sorry, Meant to Send Those Last Two Emails Off the List

[LeeCraner at aol.com]

Scott:
 
Considering the comments you've made, I'd highly recommend the  HBR-11.  
Five fewer holes to punch if nothing else, hi.  And being one  of the last 
iterations of Ted's receivers, it incorporates a lot of what he  learned along 
the way.  BTW, the "C" in HBR-13C simply means a center  mounted Eddystone 
dial.  There is no reason why you couldn't build an  HBR-13 using another 
dial configuration.
 
Give a lot of thought to the dial that you'll use.  It's what you'll  be 
looking at whenever you operate the rig.  The National dial is a great  dial.  
Keep in mind though that the HBR (any flavor) dial calibration in  not 
linear.  So you won't be able to read the frequency directly from the  PW dial.  
You'll have to make up a dial calibration chart ala the HRO  receivers 
(which were not linear either).  The National ICN, ACN, etc dials  did allow 
easy hand calibration, but the tuning rate is typically found to be  too quick. 
 This can be solved by using the Jackson Brothers dual range  drive (still 
available new from Surplus Sales of Nebraska) behind the National  drive, 
but this does require some fabrication (I've got pictures of how to do  this 
if you decide to explore that option).
 
One caution on the thoughts of using a wooden case.  The HF oscillator  in 
an HBR is very susceptible to proximity capacitance.  Your hand, etc.  close 
to the left side of the wooden case will change the received frequency  
quite dramatically.  
 
73
Lee WB6SSW