...@contesting.com] On Behalf Of Grant Saviers
Sent: Monday, September 11, 2017 7:26 AM
To: topband@contesting.com
Subject: Topband: 4sq receive antenna side filters?
I was asked by a DXpedition leader if it was practical to bandpass filter the
input (antenna side) of the DX Engineering 4 sq's
The Achilles heal of active whip receive antennas is the
inability to do filtering ahead of the amplifier.
I have spent many hours
brainstorming this problem, and have yet to devise a
solution. Especially one with 40 dB rejection.
I am thinking that if there was any way to
do this, DXE would be
I was asked by a DXpedition leader if it was practical to bandpass
filter the input (antenna side) of the DX Engineering 4 sq's they plan
to use (I have one). Given the few acres of the island and 5 feet ASL
there isn't space to get adequate antenna separation and of course both
transmit
