Yaesu Musen Co. Ltd. 0A300910 ユーザーズマニュアル

The SCU-30 is wireless access point supplied with 5 feet of cable that plugs into your compatible Stan-

dard Horizon VHF radio to wireless connect with the SSM-71H Wireless Remote Access Microphone 

RAM4W. Please refer to the STANDARD HORIZON products catalog or web site for compatibility.

The details of the installation and operation of the 

SCU-30 are included in the owner’s manual of 

the compatible fixed mount radio, or can be downloaded at www.standardhorizon.com.

Antenna Unit (5 feet cable) .................................................................................................................... 1
Antenna Base (Socket, Part number: RA6054200)  .............................................................................. 1
Screws (M3X8 SUS, Part number: U20308020)  .................................................................................. 3

The SCU-30 is designed to be mounted on a base, installed on an extension pole or flush mounted.

Choose a location for the antenna unit that has not located within 3 feet of radar or other transmitting 

antenna. Ensure there are no major obstructions or fixtures in the immediate proximity to the anten-

na unit. If you are unsure of the location, temporarily mount the antenna to verify correct operation. If 

mounted close to a radar, turn on the radar and check the to verify correct operation.
Compass Safe Distance
This antenna unit at least 0.2m (0.66 feet) from magnet-
ic compass.
Base Mounting the antenna
The thread used on the base of antenna (1 inch, 14 TPI) 

is an industry standard used on a wide range of commer-

cially available mounting brackets or extension poles.  

Due to the manufacturing process of the mounting brack-

ets, the antenna may not tighten all the way down onto all 

the threads. This is of no concern however as the anten-

na must be tightened until the antenna stops rotating.
1. When passing the antenna cable through a mounting 

bracket or extension pole, make sure to pass the ca-

ble through the antenna base.

・When routing the antenna cable along the outside of 

the extension pole, pass the cable through the groove 

as shown by the dotted lines in the figure on the right. 

(Please cut the blank panel with a long-nose pliers.)

・The antenna cable can be cut and spliced to ease installation. Care must be taken when reconnecting 

the antenna cable to protect from water and corrosion.

2. Mount the antenna base to the antenna using the supplied three screws.

3. Screw the antenna base to the mounting bracket or extension pole.

4. Install the mounting bracket or extension pole. 

Flush Mounting the antenna
NOTE: Before drilling the mounting holes, it is 

recommended to verify correct opera-

tion in the desired location.

1.  To ease installation use the supplied flush 

mount template. 

2.  Apply the flush mounting template sticker.

3.  Drill the 0.78” (20 mm) and 0.13” (3.2 mm) 

holes, and remove the template.

4.  Insert the cable into the 0.78” (20 mm) hole 

and route to the transceiver.

5.  Apply a small amount or RTV to the under-

side of the antenna.

6.  Place the antenna and screw into place us-

ing the supplied screws.

cut here

cut here

Antenna Base

Pole

Antenna Cable

Antenna Unit

φ3.2 mm [0.13 inch]

φ20 mm [0.78 inch] or greater

φ3.2 mm [0.13 inch]

φ3.2 mm [0.13 inch]

Be sure to read the safety precautions of Operating Manual of the compatible fixed mount VHF 

radio to use this product safely.