[Elecraft] AM and FM with FM Filter

[Joe Subich, W4TV]

Yes - effective with MCU 4.57 for AM transmit

> MCU 4.57 / DSP 2.79, 10-24-2012
>
> * AM TRANSMIT CAN USE THE FM FILTER: The wide (FM) crystal filter can
> now be assigned to AM transmit as well as FM. This can potentially
> free up a crystal filter slot for customers who were using the 6-kHz
> filter only for AM.

and MCU 4.60 for ESSB transmit:

> MCU 4.60 / DSP 2.80, 11-17-2012
>
> * ESSB TRANSMIT CAN USE THE FM FILTER: The wide (FM) crystal filter
> can now be assigned to ESSB transmit as well as FM and AM. This can
> potentially free up a crystal filter slot for customers who were
> using the 6-kHz filter only for AM/ESSB. NOTE: The 6-kHz filter is
> still recommended for high-performance ESSB and AM receive, as it
> will provide significantly better close-in dynamic range than the FM
> filter.

73,

    ... Joe, W4TV


On 2014-06-28 2:51 PM, Bob Myers wrote:
> Folks,
>
> Can a single Elecraft FM filter support AM and FM transmit and receive for occasional use with a K3?
>
> Thanks,
>
> Bob W1XT
> Sun City West, AZ
>
>
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