There is no “power off” indication sent to the Auxbus from the K3 or K4, so no,
there isn’t a direct way for the KRC2 to know if the radio is off.
Having said that, my KRC2 is powered through a relay that is controlled by the
K3’s +12V out jack. It is powered on with the K3 and likewise
powered
When I shut off the radio (K4 or K3) the KRC2 stays selecting the
antenna for the freequency that was last sent from the radio over the
Aux bus.
Is there any way to have the KRC2 remove any antenna selection when the
radio is turned off??
thanks,
Gordon - N1MGO
Hi all,
I have two devices which requires band data.
1.)Bandpass filter with 12 volt input lines per band
2.)Antenna switch which requires a BCD coded input for automatic
switching
My intention is to use KRC2 in serial mode. I understood from documentation
BCD coded band data
Joerg,
The KRC2 can be configured to accept BCD data as input, but I see no
reference that it provides BCD output.
73,
Don W3FPR
On 7/1/2013 8:05 AM, Jörg Rüschenschmidt wrote:
Hi all,
I have two devices which requires band data.
1.)Bandpass filter with 12 volt input lines per band
I use the KRC2 as you describe (though I've got a highly modified bandmap
and use it for driving my microwave rover station) .. I use the BCD output
to drive my LO synthesizer and the discrete outputs to throw relays and
stuff, works fine for me
de w1rt/john
On Mon, Jul 1, 2013 at 8:05 AM, Jörg
Don,
The manual says (on page 25 of rev C):
The remaining four drivers, labeled A, B, C and D, are TTL-compatible
inputs or outputs depending on the operating mode. In normal KRC2 or
analog modes, the terminals are outputs. In digital parallel input
mode, they become inputs, and receive the
The output of the BCD pins is indeed TTL level, with coding as described in the
KRC2 manual.
If the BPFs need BCD input at +12 volts, probably the best way to do this would
be to configure four output pins to output the desired BCD code for each band
using the KRC2 Configuration Tool. I
I'm trying to figure out how it could be configured to control
antenna selection based on mode of operation. My station has Yagi
beams for UHF/VHF weak signal work, and also verticals for FM and
repeater use. I know I can get the KCR2 set up to select the
appropriate relay readout for a
I'm thinking of ordering a KCR2 Band Decoder from Aptos.
I'm trying to figure out how it could be configured to control antenna
selection based on mode of operation. My station has Yagi beams for UHF/VHF
weak signal work, and also verticals for FM and repeater use. I know I can get
the KCR2
Lew,
You are correct, the KRC2 cannot do that directly, but it does have the
AC outputs that can be put to use such that with a bit of external diode
logic it can be semi-automatic. I say semi-automatic because the
selection of the AC outputs depend on tapping or holding the 4 buttons
on
Sorry, but I was hasty and erred in that last post by saying the KRC2
does not decode 2 meters - it does not directly, but the TRN outputs can
be configured to select 2 meters.
73,
Don W3FPR
Lew,
You are correct, the KRC2 cannot do that directly,
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