[Elecraft] ATU and Bandpass Filter

[Lane]

I think I'm missing something here. I'm not sure I understand putting
the ATU after the filter since the ATU is internal. How does one put
it after the external BP filter?

On Fri, Jun 23, 2017 at 7:03 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:
> What Matt said is true.  However, if your antennas are close to resonance,
> go ahead and use the ATU to "touch up" the tuning.
>
> If you are trying to use a multiband antenna such as a G5RV and such, you
> might as well forget the advantage of the bandpass filter.
>
> Our local club discovered that multiband antennas were a major problem at
> multi-transmitter Field Day sites.  We now use single band dipoles, and yes
> we use a bandpass filter for each of the FD bands.
>
> 73,
> Don W3FPR
>
> On 6/23/2017 4:35 AM, Matt Maguire wrote:
>>
>> The problem is that the filter is designed to work with a 50 ohm
>> characteristic impedance (ie. with a 1:1 VSWR). This means you need to put
>> ATU *after* the filter, not before, otherwise the filter will not work
>> properly.
>
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