[HBR] So i'm gonna build an HBR-XX

[Lorne Barber]

Nick & all, you probably have considered the HBR 12. It used a seperate 
oscillator tube. Ted Crosby came out with a modification to the HBR 11 to 
convert it to the HBR 12. I have one here with the tube extending out 
horizontally out the back of the chassis as per Ted's modification. While it 
works fine, I never much liked this and if I ever built another HBR 12 I 
would go the vertical route.  Building from scratch as you are  doing, there 
should be no problem mounting this extra tube vertical on the chassis as per 
the HBR 13 etc.
The additional tube apparently reduced oscillator pulling. No doubt more 
knowledgable HBR builders can add to this. I have the origional Crosby 
article and I can dig it up if there is any interest.
7 3 Lorne
ve7box





----- Original Message ----- 
From: <bignick at execpc.com>
To: "HBR Receiver List" <hbr at mailman.qth.net>
Sent: Friday, March 13, 2009 9:05 AM
Subject: Re: [HBR] So i'm gonna build an HBR-XX





Hi Bob,

Well I think I read somewhere that Crosby said that the
HBR-11 worked as
well as (or maybe better than?) than the HBR-16.

And, I figured that I'd be lucky if I could locate the components
for a "simple"
HBR let alone the Cadillac version
:-) I guess I just perceived the HBR-11 to be
a more
manageable project? I'll find out ..

I did see some
layouts for the HBR-16 online somewhere, probably through that
site
that has all the photographs of various people's HBR receivers.

Best of luck on your Collins 75A-1 restoration project.

What
shape is it in? Any "before" photographs available?

71

--bn KC9KEP




> These
pictures are great. You are a lot further along than I am.
> I
still don't have all the parts collected up.
> Did you say you
were building an HBR-11?
> I am finishing up the restoration of a
Collins 75A-1 receiver. Once that
> is done I can start on the
HBBR-16.
> Work takes up to much time. I plan to retire in a
couple of years. Hope to
> have more time then.
> What
is the reason you are not going to build the HBR-16. What I was able
> to find out it is easier to get working than the 11.
>
Thanks,
> Bob
>
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