ajp166 wrote:
, so you say. I just got done building two
50mhz frequency counters
using SMT parts. The board is 1.8x2.1 inches and the
display is 4 digit
module with .375" 7 segment leds. The assembly includes 6 transistors
(SOT) and a 74HC4017 (SMT) plus the Amtel (20pin dip) micro and
associated chip resistors, caps and diodes. The resistors were the
large 1206 (.11x.06") parts. There were a total of 5 through hole parts
if you count the crystal and display. With a low power magnifier,
standard
weller 3/64" tip, .022 silver bearing solder, and a pair of #3 tweezers
it went
together quite fast.
OK, but these are not the kind of devices I was refering to.
I have seen the immense effort that goes into prototyping GSM phones. That is
which lead to my opinion that such development is beyond any hobbiest means.
If anything, for those willing to adapt I'd say
there are possibilities
available now that never were.
That is true. But only for the determined,, experienced people .
> Oh and people still build boat anchors
too.
Which remains me : I really ought to do somehng with those 5718, 5840 and 6112
pico-tubes ( what is the correct name ) i've got .
Anybody any pointers for schematics ( small radio ) with these tubes ?
I believe it was discussed before on the list.
JOs Dreesen