[time-nuts] L1/L2 survey antenna $125 new

[Tom Holmes]

Wow! I sure got that wrong! The picture definitely
shows a female TNC with the normal pin
configuration. Guess I need to drink stronger iced
tea.

Tom Holmes, N8ZM

-----Original Message-----
From: time-nuts <time-nuts-bounces at lists.febo.com>
On Behalf Of Tom Holmes
Sent: Friday, November 13, 2020 4:47 PM
To: 'Discussion of precise time and frequency
measurement' <time-nuts at lists.febo.com>
Subject: Re: [time-nuts] L1/L2 survey antenna $125
new

Dana, it is a male TNC RP, which means reverse
polarity. The center pins are reversed from the
normal condition. Very commonly done on WiFi gear
in the US due to some FCC paranoia about people
hooking up amplifiers, which the aftermarket world
immediately addressed. Ain't capitalism grand?!

Tom Holmes, N8ZM

-----Original Message-----
From: time-nuts <time-nuts-bounces at lists.febo.com>
On Behalf Of Dana Whitlow
Sent: Friday, November 13, 2020 3:17 PM
To: Discussion of precise time and frequency
measurement <time-nuts at lists.febo.com>
Subject: Re: [time-nuts] L1/L2 survey antenna $125
new

Thanks, Bob.  I zoomed in on the image that shows
the connector without the
cover,
and it sure looks like a female connector to me
(contradicting what the
SparkFun
description says).  I could not determine which
handedness applies to the
threads,
however- not quite enough resolution in the photo.

I'm inclined to suspect that this is in fact a
standard TNC female
connector.  What
possible motive could an industry have for using a
non-standard connector
type
except for meeting some silly FCC regulation
(which clearly does not apply
here).

Dana


On Fri, Nov 13, 2020 at 1:34 PM Robert LaJeunesse
<lajeunesse at mail.com>
wrote:

> Just spotted this:
https://www.sparkfun.com/products/17382
>
> Datasheet:
>
https://cdn.sparkfun.com/assets/6/e/a/9/2/BT-147_G
NSS_Antenna_Datasheet.pdf
>
> Chokeplate design, 40dB LNA, TNC connector
>
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