[HBR] Fw: Re: GB> HBR on the Bay

[N2EY at aol.com]

In a message dated 10/14/04 10:23:50 PM Eastern Daylight Time, 
windy10605 at juno.com writes:


> I just put a bid on that unit like I said, if for nothing else than to
> find out just what it is.


Excellent, Kees!


 The "221 type" worm drive with capacitor was
> 
> also offered by Hammarlund in the 50s. I used one of the BC-221 drives on
> my latest <regen> receiver and the tuning is very impressive, that is one
> great dial drive mechanism. 


I always wondered why it wasn't used more by hams.


That and the Jackson Bros ball verniers
> 
> certainly put the other vernier drives to shame. But as far as "really
> unique" none can hold a candle to the "bowl dial" of Jim, N2EY's,
> receiver. 
> 

Thank you!

Some notes on that thing:

- if you look carefully, you can see that the chassis, brackets and panel are 
homemade from aluminum sheet

- there were lightbulbs inside the translucent-plastic bowl dial so it was 
illuminated

- the long terminal strip in the rear corner of the chassis was for heater 
connections so that oddball tubes like 5U8s, 7AU7 and 3BZ6 could be used 

- FT-241As in the IF filter

The dial turns in the opposite direction to the knob (as it does in the HW-16 
and also the little dial in the Eddystone 898) I found that feature annoying, 
and the answer was that in the next receiver I used a BC-221 capacitor. And a 
dial made from a coffee can.

73 de Jim, N2EY