HF Bandpass filters

[Ken Kopp]

For the several who have asked ...

My bandpass filters are made by I.C.E.  If you Google "ICE Bandpass
Filters"
you'll get ample information, both about where to get them, and many
"user reports".

One of you took me to task about them being used in KW situations.  I
... and most
users ... place them in the antenna port of the transceiver, NOT in the
antenna feedline.
Would never consider doing this.

73! Ken Kopp - K0PP
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[wayne burdick]

Ken Kopp wrote:

> For the several who have asked ...
>
> My bandpass filters are made by I.C.E.  ...

> I ... and most users ... place them in the antenna port of the
> transceiver

Ken,

I just wanted to reiterate that the K3's KXV3 option module facilitates
the use of these filters. Simply connect them between the RX ANT IN and
RX ANT OUT jacks. Then, whenever you select RX ANT from the front
panel, the in-line band-pass filter would be switched in.

Of course we hope that you'll find the K3's dynamic range high enough
that such filters are not needed as often  :)

73,
Wayne
N6KR


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[dj7mgq]

Hallo,

> Of course we hope that you'll find the K3's dynamic range
> high enough that such filters are not needed as often  :)

High power bandpass filters also reduce the wide band noise which any PA will
produce. To be effective in this role, the filters must be in line while the TX
is doing its thing.

This does not really have anything to do with the dynamic range of the RX but
with the noisiness of the transmitter.

vy 73 de toby
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