Probably do not need pull-ups on the outputs. The KPA500 has pull-ups on its
band inputs, with a series protective diode that isolates it from any external
pull-ups.
If you use the drivers with other equipment the pull-ups may be needed, but
they should don’t be needed with just the KPA500.
73!
> I am not sure about the O2 but it should fit to KPA.
Not quite. According to the description this board takes
BCD input and provides 12 one line per band active high
outputs. It is just backward from what is needed to
convert the Orion II "one line per band" output to the
BCD for KPA500/KPA
> or alternatively has anyone designed something home brew to
> achieve the purpose.
Takes nothing more than a 74LS147 and some pull up resistors
on the inputs and inverters (or open collector transistors with
pull ups) on the outputs. The Orion II band outputs are open
collector - maximum pul
Hi Barry,
I know that I am coming too late...:)
I found today this link for decoder:
https://www.ebay.com/itm/12-Band-BCD-Decoder-Yaesu-Elecraft-Apache-Labs/203217549978?hash=item2f50b5ba9a:g:nWoAAOSwl5hf1e1Z
I am not sure about the O2 but it should fit to KPA.
Stay safe!
-
73 - Petr, O
Gooday all
I use my Ten Tec Orion II with my KPA500 and usually try to manually switch
bands rather than rely on the RF sensing.
I would really like to use the band information output from the Orion II to
automatically switch bands on the KPA500.
Does anybody know of a band decoder which is comp
5 matches
Mail list logo
