Garmin apollo sl30 nav Manuale Utente

The SL30 is the smallest, most advanced NAV/Comm unit on the market. Its size dictates 
room for only one Comm antenna input and one NAV antenna input. It incorporates an 
internal diplexor circuit. This means that the input VHF signal must not strip the glideslope 
(330 MHz) signal from the NAV (108 MHz) signal. Do not install an external diplexor.  
 
It is recommended that a single VOR/Localizer/Glideslope antenna be used for the 
installation. Most VOR/LOC-only antennas will still provide an adequate glideslope signal 
for the Apollo SL30 to operate normally. In rare cases, it may be necessary to combine 
antenna signals. When the signals are combined, the systems overall performance may be 
slightly degraded, but the glideslope signal may increase to an acceptable level.  

Dual Antennas 
If separate VOR and glideslope antennas are used on the aircraft, a splitter/combiner must be 
used. 

SL30 NAV Input

Splitter/

Combiner

VOR/LOC Antenna

GS Antenna

1

2

S

 

Slit 1/4" (2X)

Clamp Nut

0.375

0.031

- Slide clamp nut over coax.
- Strip coax as illustrated.
- Cut two 1/4" slits in jacket 180
   degrees apart.

Braid Clamp

Cap

Solder Center
Conductor

Step 1.

Step 2.

Step 3.

- Slide braid clamp over end of coax and
   under the braid.

- Insert coax with braid clamp into 
   connector and tighten clamp nut securely.
- Solder the center conductor of the coax
   to the contact as illustrated.
- Attach the cap and secure tightly.

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