Topband: RX PREAMPS

[Hardy Landskov]

Mike,
It's your bud from Dayton. I will make this comment: I have modeled 160 rx
antenna systems, Hi-Z 4 square and 8 Circle on EZNEC with the NEC-4 engine.
Anything closer than 200 feet with a 160 tx antenna results in severe
pattern distortion. Also measured +3 to +20 dBm coming into the K3 rx port
depending on direction. I would imagine DXE arrays would be similar.
YMMV.
73 Hardy N7RT


-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Mike
Greenway
Sent: Sunday, November 15, 2015 10:34 AM
To: TOPBAND
Subject: Topband: RX PREAMPS

I  have used the HI Z rx system and also the DXE ones.  HI Z said in the
past no need for a sequencer to get power off the amps if the xmit ant was
close to the rx system antennas.  Close I would say 60 foot.  DXE has always
suggested using a sequencer to get power off the amps during xmit.  I am
going to be forced to move a DXE system within 65 ft or so of my 160
vertical and wonder if anyone has had any experience of using the DXE
without a sequencer close to their xmit antenna.  Just hate to install one
more thing I could get around but will if absolutely necessary.  I know
moving it closer is not an ideal situation but you do what you have to.  Any
input?  73 Mike K4PI _________________ Topband Reflector Archives -
http://www.contesting.com/_topband