What I had in mind was a slightly higher level
system view.

So starting at the easy end, we might specify that
the AF amp takes 100mW into 600 Ohms, and
delivers 1W out into 8 Ohms. a biscuit to do that
might take many forms but would all be interchangeable.

If an audio filter were to be included, that would
work in and out at 100mV into 600 Ohms with
0dB gain - and would thus be an optional fit
prior to the AF amp.

I'm not thinking in terms of mother and daughter boards,
but of a set of standard biscuit designs that could then
be assembled into whatever, test eqpt or rig.

Although we'd be using small miniature components (is
anything else readily available these days?) that miniaturisation
does not have to feature in our biscuits necessarily, so
we might have SMDs but spaced out by half-an-inch, or so,
to enable us to work with them.

Setting aside the infantile remarks and attention-seeking
from "the usual suspects", I'm proposing that this be a joint
effort.
=================================
Just for information :
A modular approach to homebrewing (call it biscuit building) is also
very well propagated in the book : Experimental Methods in RF Design ,by
W7ZOI , KK7B and W7PUA. Most modules are built in 'ugly contruction'
style for best possible (RF) stability and low cost .

Frank GM0CSZ / KN6WH

"G.A.Evans G4SDW" wrote in message
...

Might we all act together to produce a series
of "biscuits" that could then be assembled
Lego-like fashion to produce any rig or test
equipment?

A truely excellent idea Gareth.

Why don't you rough out a plan and design a few of these "biscuits" and
publish them on a website or maybe in one of the various journals that
support the hobby.

Good luck and I look forward to seeing your first designs.

--
73
Brian, G8OSN
www.g8osn.org.uk

Now your amateur licence is free, why not send at least £15 per year to
support the
Radio Communications Foundation or STELAR?

Brian Reay wrote:

Why don't you rough out a plan and design a few of these "biscuits" and
publish them on a website or maybe in one of the various journals that
support the hobby.

So, not RadComic then!

--
ARRL membership = $39 (~£20)
RSGB membership = £44

Don't let them rip you off any more.
Do the right thing, resign from the RSGB today.

The RSGB said Radio Amateurs were a threat to national security!
Is this the type of organisation you want to represent you?

know code wrote:
Brian Reay wrote:

Why don't you rough out a plan and design a few of these "biscuits"
and publish them on a website or maybe in one of the various journals
that support the hobby.

So, not RadComic then!
==============================================
Well,...Eamon Skelton ,EI9GQ is doing exactly that already..in his
HOMEBREW column in ........... RADCOM.

and George Dobbs , G3RJV has a similar column in Practical Wireless.

I am sure G4SDW knows that.


Frank GM0CSZ / KN6WH

On 16 Apr, 19:45, Highland Ham
wrote:
know code wrote:
Brian Reay wrote:

Why don't you rough out a plan and design a few of these "biscuits"
and publish them on a website or maybe in one of the various journals
that support the hobby.

So, not RadComic then!

==============================================
Well,...Eamon Skelton ,EI9GQ is doing exactly that already..in his
HOMEBREW column in ........... RADCOM.

and George Dobbs , G3RJV has a similar column in Practical Wireless.

I am sure G4SDW knows that.

Frank GM0CSZ / KN6WH

March's RadCom had a QRP transceiver with just 11 biscuits. None of
the biscuits had E numbers, and only one had silicon.

"Highland Ham" wrote in message
...

Why don't you rough out a plan and design a few of these "biscuits" and
publish them on a website or maybe in one of the various journals that
support the hobby.

Well,...Eamon Skelton ,EI9GQ is doing exactly that already..in his
HOMEBREW column in ........... RADCOM.

and George Dobbs , G3RJV has a similar column in Practical Wireless.

I am sure G4SDW knows that.

Frank GM0CSZ / KN6WH

Maybe he does know it but that doesn't mean the idea is not a good one.
Truely new ideas are few and far between. I've come across it before as a
suggested way to cope with component obsolesce issues in long service life
applications- a chap I used to work with coined the idea of "tokens" (as I
recall). Basically the idea was a library of circuit building blocks that
could be assembled to make a larger circuit. If a particular part could no
longer be obtained, a new "token" could be designed with a defined interface
and functionality.

A sound idea but not an easy project. However, if Gareth can get something
rolling, maybe expanding on Eamon's and/or George's ideas, so much the
better. I'd not knock the idea, quite the converse.

So get rolling Gareth, let us see some of your ideas on the web or in Sprat,
etc.

--
73
Brian, G8OSN
www.g8osn.org.uk

Now your amateur licence is free, why not send at least £15 per year to
support the
Radio Communications Foundation or STELAR?

On 16 Apr, 21:09, "Brian Reay" wrote:

So get rolling Gareth, let us see some of your ideas on the web or in Sprat,


The seminal book "Solid State Design for the Radio Amateur" (1977) by
Haywood et al had pages of circuit snippets. I also think that PW do
boards for different radio modules. I suppose one might envisage a
sort of mother-board into which modules might be inserted to allow
different designs to be built up? I am not convinced that the idea
will go far though. It is quite easy to breadboard almost anything on
double sided pcb quickly and easily.

I know it now, but as I read neither BadCon
nor Practically Witless on a regular basis, I
was unaware until your post below.

"Highland Ham" wrote in message
...
Well,...Eamon Skelton ,EI9GQ is doing exactly that already..in his
HOMEBREW column in ........... RADCOM.

and George Dobbs , G3RJV has a similar column in Practical Wireless.

I am sure G-4-S-D-W knows that.

In message , know code
writes
Brian Reay wrote:

Why don't you rough out a plan and design a few of these "biscuits"
and publish them on a website or maybe in one of the various journals
that support the hobby.

So, not RadComic then!


Which 'various journals'? They're gae few, these days. They're aa' deid!
Ian.
--

Brian Reay wrote:

"G.A.Evans G4SDW" wrote in message
...

Might we all act together to produce a series
of "biscuits" that could then be assembled
Lego-like fashion to produce any rig or test
equipment?

A truely excellent idea Gareth.

Why don't you rough out a plan and design a few of these "biscuits" and
publish them on a website or maybe in one of the various journals that
support the hobby.

Good luck and I look forward to seeing your first designs.

I look forward to seeing the implementation of the design of the first
unit ever to incorporate the Big-K approach to DSP.
--
from
Aero Spike