External Antennas | SkyGuardTWX Systems | Discussion Forum

Avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_TopicIcon
External Antennas
August 10, 2014
12:53 am
Avatar
Don Houtz
Admin
Forum Posts: 24
Member Since:
June 16, 2014
sp_UserOfflineSmall Offline

If you want to install external antennas in place of the portable antennas we ship
with the SkyGuardTWX units, Here are some guidelines and recommendations:

To get the best possible transmission and reception performance on the SkyGuardTWX
Transceiver, you can install externally mounted "belly antennas" on the fuselage of your
aircraft. Depending on which specific model of the transceiver you have, it will require
either 2 or 3 external antennas. If you have the Dual-Band Receiver model and you
want to have an external antenna for the 1090ES receiver, then you will need
3 external antennas as follows:
1 - UAT 978mhz antenna for the UAT Receiver
1 - UAT 978mhz antenna for the UAT Transmitter
1 - ES 1090mhz antenna for the ES Receiver

If you have the AHRS model, then you will need 2 external antennas as follows:
1 - UAT 978mhz antenna for the UAT Receiver
1 - UAT 978mhz antenna for the UAT Transmitter

For the UAT antennas, we recommend either the Delta POP (non-certified) or
the Rami AV-74 (certified). You can find these antennas on the internet.
For the ES antenna, you can install a standard "ball and stick" transponder antenna
which you can find online or from you local avionics shop.

Depending on where you want to mount your SkyGuardTWX Transceiver,
and the distance to where you installed the external antennas, you may need
to have longer coax cables to go from the Transceiver to the antennas.
We recommend that you try to keep these coax cables as short as possible
and that you do not exceed a maximum length of 8 ft.
You can have your local avionics shop build these cables with the
appropriate connectors on each end, or you can order a variety of RF coax
cables from http://www.digikey.com.

Here is a link to premade antenna coax cables with the appropriate connectors
on each end of the cable. If you call them directly, they can make custom
cables at any length with different types of connectors on each end.

http://www.amazon.com/gp/produ.....U711JJZ9E9

When installing the external antennas, make sure that the UAT Transmitter antenna
is at least 18inches away from the UAT Receiver antenna. Also, make sure
that the 1090ES Receiver antenna is at least 3 ft. away from your Mode A/C/S
Transponder antenna. And lastly, make sure that the UAT Transmitter antenna
is at least 3 ft. away from any comm. radio antennas. All these antenna types
should be installed on the bottom side belly of your aircraft.

Of course if you are installing these antennas on a certified aircraft, you need to
have the install performed by an A&P or your local avionics shop.

Once the SkyGuardTWX Transceivers are approved under TSO-C154c, externally
installed certified antennas will be required, so if you want to do that install now,
it will get you prepared for future and you will get the best performance out of
your Transceiver.

Don
SkyGuardTWX

May 7, 2016
9:10 pm
Avatar
pglen
New Member
Members
Forum Posts: 1
Member Since:
May 7, 2016
sp_UserOfflineSmall Offline

Is there a minimum distance between an existing transponder antenna and the UAT Transmitter antenna?

Thanks,

Paul

May 28, 2016
10:05 pm
Avatar
Don Houtz
Admin
Forum Posts: 24
Member Since:
June 16, 2014
sp_UserOfflineSmall Offline

Paul: Yes, the UAT Transmitter antenna should be at least 2 ft. away from your Mode C Transponder
antenna.

Thanks
Don
SkyGuardTWX

Forum Timezone: UTC 0

Most Users Ever Online: 19

Currently Online:
1 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

PA-22: 11

johnwfranks: 8

jscott.planes: 7

OldPilot: 4

Jim Logajan: 4

zn105: 3

SouthEastLSAservices: 3

robmorgan1: 3

VIN2020: 3

Pazzopilot: 2

Member Stats:

Guest Posters: 0

Members: 102

Moderators: 11

Admins: 2

Forum Stats:

Groups: 1

Forums: 4

Topics: 31

Posts: 112

Newest Members:

Manny, glen sullivan, Ben, Jim B, Swashplate, Bob, Joe, Dale_1, Dale, HenryLumma

Moderators: marsolgp: 0, leydsmanw: 0, Allensilberman: 0, Zane: 0, rshannon: 0, Brian_Neiman: 0, tmyers: 7, PAUL WESTCOTT: 0, jnmarshall: 8, rocpilot: 0, greghughes: 0

Administrators: Zane: 0, Don Houtz: 24