Garmin GDL 59 – Data Logger & Wi-Fi Datalink Installation Manual - Page 11

General Antenna Requirements, Wi-Fi Network Requirements, Certification - networks

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1.4.4 General Antenna Requirements Garmin recommends the Wi-Fi antenna specifications shown in Table 1-6. These antenna specifications are approved with the certification of the GDL 59. Any Wi-Fi antenna with specifications listed in the following table should work with the GDL 59. Table 1-6. Wi-Fi Antenna Minimum Requirements Characteristics Specifications Frequency Range 2412 to 2484 MHz Gain (Typical)

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GDL 59 Installation Manual
Page 1-5
190-00837-00
Revision C
1.4.4
General Antenna Requirements
Garmin recommends the Wi-Fi antenna specifications shown in Table 1-6.
These antenna specifications
are approved with the certification of the GDL 59.
Any Wi-Fi antenna with specifications listed in the
following table should work with the GDL 59.
Table 1-6.
Wi-Fi Antenna Minimum Requirements
Characteristics
Specifications
Frequency Range
2412 to 2484 MHz
Gain (Typical)
<5 dB*
Nominal Output Impedance
50 ohms
Operating Temperature Gain
-50 to +85°C**
*For each 1 dB gain over 5 dB, add 1 dB of attenuation into the antenna cable path between the antenna and the
GDL 59.
**STC/Installation dependent
1.4.5
Wi-Fi Network Requirements
To ensure compatibility with the GDL 59, the Wi-Fi network must comply with the below requirements.
•
Fully IEEE 802.11g compatible
•
All access points must be coupled to a DHCP server
•
The network shall support data transfer via HTTP and HTTPS and allow outgoing connections to
the internet on port 80 and port 443
•
Networks that include web proxies, captive portals, or other elements that require user
credentials, including a username and password or a redemption or access code; or require action
such as accepting a user agreement, are not supported for data transfer from the GDL 59
•
The access point must be capable of receiving at a rate of 18 Mbps
•
The Wi-Fi network shall be compatible with WEP64, WEP128,WPA-PSK, or WPA2-PSK
encryption formats, and with all of those formats associated encryption combinations and options;
or compatible to be used with no encryption.
WPA-Enterprise and WPA2-Enterprise are not
supported
•
If WPA-PSK or WPA2-PSK are used, the access point must not be set to auto-select between
them.
1.5
Certification
The conditions and tests required for the TSO approval of this article are minimum performance
standards.
It is the responsibility of those installing this article either on or within a specific type or class
of aircraft to determine that the aircraft installation conditions are within the TSO standards.
TSO articles
must have separate approval installation in an aircraft.
The article may be installed only if performed
under 14 CFR part 43 or the applicable airworthiness requirements.
The GDL 59 system is limited to communication to the cockpit and cabin for convenience only.