As of January 2005, I can no longer offer any of these boards for sale, except the
SquawkBox transmitter, and the MultiDisplay. The SquawkBox is only available assembled
and tested, and can be found [HERE]... The MultiDisplay now is only available assembled
and tested, it can be found [HERE].
Since the introduction of the new PicoDopp DF, no-one has enquired about
this old DF design ( the one on this website ) in over a year. If you truly want to
construct this old design, all the information required to do it is already available
on this website, and you must do it yourself. Otherwise, you can see the
new PicoDopp DF [HERE].
I would strongly reccomend the new PicoDopp as an alternative, unless you just want to
get the personal experience of building this kind of equipment. The newer PicoDopp DF comes as a set of 6 PC
boards, assembled and tested only. ( no bare boards ) The user must still have some
technical skills, because the boards must all be connected together, installed in
enclosures, cables provided, etc.
The PicoDopp basically works like the DF on this website, except it
has no display... it has an RS232 output instead, ( standard item ) to drive the ( free ) computer
display program. The cost is US$ 150, plus shipping. Optional pelorus or numeric displays are
available, and the MultiDisplay will work with it, too. It also has a better antenna design,
( much better ) a GPS input, and also an infrared output to drive a cordless display using a Palm PDA.