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Re: [Discuss-gnuradio] Moving my antenna

From: Sid Boyce
Subject: Re: [Discuss-gnuradio] Moving my antenna
Date: Tue, 29 Jan 2019 20:14:01 +0000
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The ANT500 needs 50 Ohm coax - RG8, RG13, etc.
73 ... Sid.

On 29/01/2019 19:51, david vanhorn wrote:
Coax loss can be a big issue.
Given the low power levels you will suffer less loss on a long run using 75 ohm coax cable which is designed for low loss, even assuming you do nothing about the mismatch at the ends of the run.  All that is good up to about 1ghz where more specialized coax is needed for minimum loss.

The antenna is a significant part of the equation and you are well advised to use an antenna suited for the frequency of interest. Broadband antennas like discones have very low gain, and they pull in other strong signals you don't want.

On Tue, Jan 29, 2019, 12:40 PM cliff palmer <address@hidden <mailto:address@hidden> wrote:

    I have a HackrfOne with an Ant500 antenna connected to my
    workstation in my basement (where the internet connection
    lives).  I need to move the antenna out of the basement to
    improve reception, so I thought I would use coax to connect the
    antenna from upstairs to the HackrfOne.
    I'm too new to SDR to be confident about just moving the antenna
    and using a spare length of cable coax. Please provide some help
    on selecting, sizing and connecting coax between the HackrfOne and
    the Ant500.

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Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Senior Staff Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

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