The KRC2 actually has far more capabilities for controlling external
devices than the K3. The KRC2 has 16 individual high current, high
voltage sourcing drivers and 16 high current sinking drivers. These
are commonly used to control antenna selection relays (the sourcing
drivers) and bandpass filters (sinking drivers), but also may be used
for switching a wide array of devices. The outputs can be controlled
from a wide array of triggers, not just band selection. This gives
the KRC2 capabilities far beyond any other selector on the market,
and far more than the K3 gives. The good news is that the K3 can
directly control the KRC2, so the two can work together quite nicely.
On Oct 23, 2007, at 6:26 AM, wayne burdick wrote:
Hi John,
Both!
The K3 works with the KRC2 for controlling complex antenna or
transverter switching. But it also provides amplifier control
signals, as well as 4 open-drain band-data outputs. These are
discussed in the Owner's manual, in the "Rear Panel" section.
Normally the band-data signals output a 4-bit binary code that
works with 3rd-party band decoders, and/or transverter addresses
that you select on a per-transverter basis. But we could also allow
these to be used as 4 general-purpose, active-low relay enables for
small relays, or as signals you could derive relay drive from. The
could be mapped per-band using a PC utility. This would require
additional firmware that we haven't written, pending a survey of
how operators would like to use them.
73,
Wayne
N6KR
On Oct 24, 2007, at 4:29 AM, John Reilly wrote:
Is the functionality of the KRC2 built into the K3, or is it still
necessary for interfacing to amplifiers and antennas?
- 73. John. WØJFR
---
http://www.elecraft.com
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