[Elecraft] KPA500 feature suggestion - band bypass

[iain macdonnell - N6ML]

On Wed, Apr 6, 2011 at 9:26 PM, Lyle Johnson <kk7p at wavecable.com> wrote:
> As Jack points out, the ATU belongs AFTER the KPA500 if you are using
> non-resonant antennas.

Kinda tricky to do that with the KAT3 that's already inside the K3 :P


> if you are using some resonant and some non-resonant, and you want to use
> the KAT3 for the non-resonant, then attach the resonant antennas to the
> KPA500 and the non-resonant antennas to the other antenna connector on the
> KAT3,  This way, the KPA500 will not be subjected to the voltage or current
> extremes that might occur ion the feedline if you attempt to put the KPA500
> between the ATU and the antenna.

It's not quite that simple... basically, I'm using a Force12 C3SH,
which is resonant on 10/15/20, but also provides some gain on the WARC
bands, with a tuner for matching. I want to be able to use it QRO on
the bands where it's resonant, and barefoot with KAT3 on the 12/17m.


> Otherwise, a high-power-capable ATU after the KPA500 will be needed, or you
> will need to bypass the KPA500.

I'm hoping the KAT500 (?) will be a solution some day soon. Meanwhile,
Eric has given me renewed hope. I'll not cancel my order just yet ;)

    ~iain / N6ML



>> Well that sounds very disappointing ... can we gets specs on the
>> maximum reflected power that this sensor circuitry can safely handle ?
>
>