[time-nuts] Re: HP 10811A unusual appearance

[Richard Karlquist]

Conventional flex is the same thickness everywhere, same as PC board. 

Sculptured has variable thickness.  I'm not really an expert on this.

---
Rick Karlquist
N6RK 

On 2022-08-24 13:24, Adrian Godwin via time-nuts wrote:

> If it's not too off-topic, what is a 'sculptured' flex circuit ?
> The 10811 I've taken apart has a 2D-shaped and folded flex circuit that I'd
> consider 'conventional' - does a sculptured one have some integral 3D
> shaping ?
> 
> On Wed, Aug 24, 2022 at 7:46 PM Bob kb8tq via time-nuts <
> time-nuts at lists.febo.com> wrote:
> 
> Hi
> 
> I should have access to the supply dump some time in November.
> My take was that they started off with a more exotic PCB approach
> early on and simplified things a few years later. If I remember correctly
> the solder mask changed a bit at the change over as well.
> 
> Bob
> 
> On Aug 24, 2022, at 6:13 AM, Matt Huszagh <huszaghmatt at gmail.com> wrote:
> 
> Bob kb8tq <kb8tq at n1k.org> writes:
> 
> There are at least two *very* different 10811 PCB's out in the wild
> in quantity. I don't have access to the "stockpile" right now so I can't
> say how the one in the picture compares to the commonly seen
> varieties. 
> If you do get access at some point and it's not too much trouble to
> check, I'd be interested to know more about this. Do you know the reason
> for having two versions? Is it simply that one was an earlier design and
> the other replaced it?
> 
> Thanks
> Matt
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