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
“Testing to see how bad powerline internet connections can be for HF reception. These devices allow you to use your house power cables as a conv... Read more
“HamRadioNow doesn’t do ‘unboxings’, and we don’t do product reviews per se, but this time we do both. A new BaoFeng UV... Read more
Check out this video on the Windom 40 Antenna from Chameleon Antenna. This antenna is an off center dipole that was specifically designed for 40, 20 a... Read more
Review
HF Interference Problem from Ethernet over Powerlines Devices
HRN 269: Bull in a China Shop on Ham Radio Now
Windom 40 Antenna By Chameleon Antenna
Leixen VV-898 Features * PTT ID (Voice broadcast PTT ID) * All calls, group calls and selective calls * Monitor, RX Inhibit, RXTX Inhibit and Eme... Read more
Originally broadcasted live on the Yaesu System Fusion – Official Facebook group. John Kruk, N9UPC, National Sales Manager for Yaesu USA briefly... Read more
ARLINGTON, SOUTH DAKOTA – WEDNESDAY, 13 JULY 2016 A Full Duplex 50 Watt Tri-Band Radio from BTECH is Released BaoFeng Tech announced today the r... Read more
Yaesu FT-4XR FM DUAL BAND TRANSCEIVER Range: 136-174, 400-480MHz Antenna Connector: SMA Power Source: 12.6 VDC Nominal, Battery Operated Exclusively R... Read more
VHF
Leixen VV-898
WiRES-X Software & FT-2DR Firmware Announcement
BTECH UV-50X3 – TRI BAND (VHF/1.25M/UHF)
Yaesu FT-4XR / FT-4VR : ANNOUNCEMENT
G-450A Specifications Power Supply Voltage: 117 VAC, 50-60 Hz Power Supply Current Consumption: 0.5 Amps Rotor Voltage: 24 VAC Cable Conductors... Read more
HyEndFed 5 band for 80,40, 20, (15) and 10 meter. Max. Power : 200 watt PEP. Length : 23 meter. Enclosure : Polycarbonate IP67, 100% UV resista... Read more
Technical Features METER METROPWR FX771 Coverage 1.8/55 MHz 160/6mt + VHF/UHF (optional) Measure Power AVG, PeP, dBm, R, Z, X , SWR, ReturnLoss Po... Read more
EAntenna 7 el. Yagi 10/15/20m band Full coverage bandwidth in the three bands Awesome gain in lower 3,2m boom leght ... Read more
“Antenna Wire” is the topic of the latest (January 18) episode of the “ARRL The Doctor is In” podcast. Listen…and learn! More than a half-mill... Read more
Antenna
Yaesu Antenna Rotators G 450A
HyEndFed 5 band 80/40/20/15/10 Antenna
FX771 MetroPWR Overview
EAntenna 3BMOX 7 el. Yagi 10/15/20m band
“Antenna Wire” is the topic of the latest episode of the “ARRL The Doctor is In”