[Elecraft] Re: K3 & KRC2

[Jack Brindle]

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
>
> ---
>
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>
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- Jack Brindle, W6FB
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