[arm-allstar] Antenna suggestions for mobile node

[David McGough]

Mike,

There is a high likelihood that you'll have RFI issues with an antenna
that close to your node hardware, with a Motorola mobile rig, where "low"
power will probably by 5 or 10 watts...Also, even on low power, you should
supply a proper 50-ohm load to the mobile rig.

I would recommend (as N3CDY commented) that you use a dummy load or a
proper mobile antenna. A dummy load will still have enough leakage for
"backyard" coverage. If more coverage area is needed, try an in-line
attenuator (like 10 or 20dB), followed by a short rubber-duck antenna or
something similar.

73, David KB4FXC



On Fri, 13 Sep 2019, "Mike Sullivan via ARM-allstar" wrote:

> All, putting a node in my truck using a Motorola radio I have laying around
> and a RIM-Lite USB interface for when I'm mobile. Ideally, I plan on
> mounting the Pi atop the radio, wiring both up so that I can unplug it and
> set it inside somewhere with a small power supply if I want. I'd like to
> use an antenna mounted directly to the radio instead of going through the
> trouble of a magnetic mount/lip mount and coming up with a way to mount it.
> Since I'll be running it low power in this scenario, would something like a
> cheap scanner/receiver antenna work? Or has anyone else tried a similar
> configuration and has a better solution? I know, not directly Allstar
> related, but I'm curious if anyone else has tried this..
> 
> Mike
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