, March 11, 2017 12:38 AM
Subject: [Elecraft] K3S with more than one device on the Band Data signals
Hi to all,
I am on the way to connect a Bandpasser2 (band data mode) on a K3s.
Later I would like also to connect a band decoder on the same radio to
switch coaxial stubs.
I wonder if the K3s
Back a bit, I had the need to drive a remote switch and something else
with the BCD band data.
For me there was simple PIC based solution. BCD input to PIC. PIC
programmed to switch to appropriate antennas . Input BCD data echoed to
other PIC outputs. PIC outputs buffered by a ULN2003's or
As I recall, it is a standard LS TTL style open-drain driver, which means it
has a fan out of about 10 LS loads. You should be able to connect several
devices. Be sure they do not have pull-ups that are connected to higher that 5
volts (some band decoders have pull-ups to 12V). The K3 has intern
Using band data mode, I've simultaneously driven both the KPA500 and a Top
Ten Devices band decoder from a single K3 with no problems.
73,
Bob, N6TV
On Fri, Mar 10, 2017 at 2:38 PM, NOEL POULIN
wrote:
> Hi to all,
> I am on the way to connect a Bandpasser2 (band data mode) on a K3s.
> Later I w
On Fri,3/10/2017 2:38 PM, NOEL POULIN wrote:
I wonder if the K3s can handle more than one device connected to the
Band Data signals.
My guess is that the answer is yes. I would expect the decoder you're
driving to have a high-Z input. Also, study the manual for that unit.
It's part of a syst
Hi to all,
I am on the way to connect a Bandpasser2 (band data mode) on a K3s.
Later I would like also to connect a band decoder on the same radio to
switch coaxial stubs.
I wonder if the K3s can handle more than one device connected to the
Band Data signals.
I suppose that Elecraft band output
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