[HBR] HBR most wanted parts

[Walt Hutchens]

Ken wrote:

> What are the "most wanted" parts for HBR's?
>
> It looks like the IF cans are tough to find.
>
> What else is on the Most Wanted list?

That 100 kcs BFO can forshrure.  However the 100 kcs IFTs and BFO coils 
can be substituted with the 85 kcs units from the BC 453 or R-23 
command receivers.

Coil forms!  You can 'roll your own' (1" nominal Sch. 20 PVC pipe on 
the base from a metal octal tube works well) but if you want 'original' 
then you've got a search on your hands -- especially for the 
polystyrene forms.  'Original' forms are probably the hardest item to 
locate.

The APC-type caps for the coils aren't common anymore but you can find 
enough if you haunt hamfests and eBay for a year or two.

I'd put a high quality tuning cap near the top of the list.  You can 
use the three-gang units from the old FM receivers (also found in many 
ham sets of the 60's-70's) but these have aluminum plates (rather than 
brass) and aren't likely to be quite as stable.  In addition many of 
them were cheaply made to start with and quality is highly variable: 
Most stators are misaligned (to the rotor) and it's not rare to find 
one that is loose; Heaven help you if you use that section for the 
local oscillator without fixing it.

No such list would be complete without The Dial.  New or even good used 
two-speed drives (necessary if you want to be able to tune SSB signals) 
are hard to find -- these wear out and most of the ones in parts set 
ARE.  The Eddystone 898 dial is probably the best all-round dial used 
on these sets (metalwork is difficult ...) but they're 'occasional' 
items on eBay.

Pretty much everything else I can think of is non-critical and easily 
available modern parts can be used -- indeed, for the small stuff,  
modern parts are far better.

Mileage varies depending on your driving practices and conditions ...

Walt
KJ4KV