ES-4 Radio / Antenna Selector Switch between 3 radios and 5 antennas

ES-4 COMES AS A CONTROL UNIT AND A BASE (SWITCHING) UNIT

THE BASE UNIT RECEIVES 12V POWER AND HAS ALL THE HEAVY COAXIAL CABLES CONNECTED TO IT. THERE IS ALSO PROVISION FOR CONNECTING UP TO 3 PTT AND UP TO 3 ALC CABLES (OPTIONAL, IF USED OR NEEDED). TYPICALLY THE BASE UNIT IS INSTALLED BEHIND THE AMPLIFIER, POSSIBLY ON A WALL OR WOODEN PANEL (MOUNTING BRACKET SUPPLIED).

THE CONTROL UNIT IS CONNECTED TO THE BASE VIA A FLAT CABLE. IT HAS AN OPTIONAL PTT CONNECTION. THE CONTROL UNIT IS TYPICALLY PLACED IN FRONT OF THE OPERATOR, NEAR THE RADIO.

SELECT the radio or the antenna at the press of a button

Specifications

Input power (3 inputs): 200 W maximum , 50 Ω load, non-switching
The non-active inputs: grounded
Output power (5 outputs): 2000 W, 3000 W peak, 50 Ω load, non-switching
Feedback Output to Input: about -115dB@30MHz
SWR: Better than 1:1.05, 1 MHz to 30 MHz, Input (Radio) and Output (Antenna)
Power requirements: 12 Vdc, 11 to 15 V range, up to 250 mA current
Protection: “Hot Switching” – changing input or output is inhibited if PTT is low (<1 V)
The PTT (RCA) sockets output a weak voltage of +5 V. When pulled low, the current is about 8 mA.
ALC negative signal sent to the 3 radios via back to back diodes (if connected)

NOTE:

PTT must be connected for the Hot Switching protection to work

Dimensions (overall):

Base: 240 x 125 x 58 mm (without wall mounting bracket

(9.5” x 5” x 2.3”)

Base: 240 x 166 x 58 mm (including the wall mounting bracket)

(9.5” x 6.5” x 2.3”)

Controller: 168 x 68 x 26 mm

(6.6” x 2.7” x 1”)

Weight: 1.4 kg (3 lb)
Shipping Weight: <2 kg (4.4 lb)

PRICES (in Australian Dollars):

ES-4: AU$390

SHIPPING WORLD WIDE

Shipping weight: <2 kg (4.4 lb)

Please inquire for stock and shipping cost or any technical details

(Go to CONTACT US in the Main Menu)

To USA (US Dollars):

$349: ES-4 Shipped

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