[Scan-DC] Mystery Helicopter (N499SL)

[dewey3 at gmail.com]

It used to be changed directly in the dump1090-fa file that lives at
/etc/default (/etc/default/dump1090-fa) if you're using PiAware.  However,
that has changed according to:
https://discussions.flightaware.com/t/for-beginners-how-to-change-set-gain/3
4596.  There are dozens upon dozens of discussions on changing gain, so when
you're bored or just want to spend some research time, go to FlightAware and
click on the "Discussions" tab, then type "--gain" (two hyphens, but without
the quotes) in the search window.  You can also do it just typing the word
gain, but I would think that would return even more hits and containing more
false positives since --gain is the actual gain parameter.

Dewey

-----Original Message-----
From: scan-dc-bounces at mailman.qth.net <scan-dc-bounces at mailman.qth.net> On
Behalf Of Alan Henney
Sent: Friday, April 10, 2020 01:57
To: Eric C. Carlson <ecarlson at gmail.com>
Cc: Scan DC <Scan-DC at mailman.qth.net>
Subject: Re: [Scan-DC] Mystery Helicopter (N499SL)

Many thanks once again Eric. Sorry I am slow to reply.  I meant to thank
you for the last email you sent too.

Do you have any tips for tweaking the FlightAware Pro Stick Plus gain
settings?

Here's a story for you:

Baltimore Hopes Surveillance Planes Lower Crime, but Residents Fear Abuse

https://nyti.ms/39YUpSG

Hope you are doing ok in this virus chaos.

Regards,
Alan


On Thu, Apr 9, 2020 at 8:43 AM Eric C. Carlson <ecarlson at gmail.com> wrote:

> Given that the path exactly follows electricity transmission lines, I
> assume it's being used for inspection and maintenance of the lines.
> Helicopters are regularly used for this.
>
> -Eric
>
> On Thu, Apr 9, 2020 at 1:54 AM Alan Henney <alan at henney.com> wrote:
>
>> My thanks to those of you who replied to my previous post trying to
>> identify the tail number of another odd-ball aircraft.
>>
>> This helicopter flies regularly from Westminster but seems to "loiter"
and
>> return later to Westminster.
>>
>> Any thoughts?
>>
>>
>>
https://flightaware.com/live/flight/N499SL/history/20200408/1221Z/KDMW/KDMW
>>
>> Thanks again,
>> Alan
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