[Elecraft] [acom-list] Re: Elecraft K3 and ACOM 2000A

[Joe Subich, W4TV]

The designer can do whatever he pleases on a telemetry port -
whether it is of value is debatable.

However, if the designer expects to be able to operate with either a
computer controlled radio or in the absence of computer control of
the radio, he needs to implement two ports - one for the "logger"
connection from the computer and one to connect to the radio.  The
amplifier/designer needs to implement a smart controller that will
accept, buffer and forward polling and control commands from the
logging software and interleave that data stream with its own polls
if the logging software is not polling for all of the data (e.g.,
split status) that the amplifier needs to determine the correct
transmit frequency.  The amplifier controller also needs to forward
any "automatic update information" (e.g. band change data) to the
computer/logger as some logging programs rely on that "auto-
information" in lieu of polling.  Finally, the controller needs to
establish a "hard bypass" if the amplifier is turned off or placed
in standby.

All of this is independent of any telemetry which needs to be on a
separate port since most loggers (none that I know of) know nothing
about the amplifier and do not expect amplifier status/telemetry
in the radio control data.

73,

    ... Joe, W4TV


On 2014-09-15 2:52 PM, Bill Turner wrote:
> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>
> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>
> On Mon, 15 Sep 2014 14:38:19 -0400, w4tv wrote:
>
>> It
>> when the amplifier designer insists on polling without providing the
>> necessary hardware support that problems start.
>
> REPLY:
>
> Makes sense.
>
> So, would it be better for an amplifier to have two ports:
>
> 1. A receive-only port for band changes
> 2. A send-only port for monitoring such as temperature, power output,
> SWR and whatever else is desired.
>
> When you're paying many thousand $$$ for an amp, the cost of an extra
> port seems negligible.
>
> Or is there a better way?
>
> 73, Bill W6WRT
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