ES-4SP  –  HIGH POWER RADIO / ANTENNA SELECTOR

Use the Remote Control to select one of 3 radios and one of 5 antennas

This is the high power version of the (QRP) ES-4

Can be used to switch two or three amplifiers – see APPLICATIONS

ES-4SP - Switching Base

Remote

ES-4SP is the 5000 Watt version of ES-4.
It uses four vacuum relays on the outputs: ANT1, ANT2, ANT4, ANT5

ANT3 is the QRP output, it can only handle 3000 W

SPECIFICATIONS:
  • Input power (3 inputs): 200 W maximum , 50 Ω load, non-switching
  • The non-active inputs: grounded
  • Output power (5 outputs):
    • 4 outputs: 5000 W, 50 Ω load, non-switching (ANT1, ANT2, ANT4, ANT5)
    • 1 output: 3000 W (ANT3)
  • 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 350 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)
  • Standard version uses SO-239 connectors. “N” version available.
  • To see more images, click on the PICTURES tab

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: Base 0.9 kg (2lb.); Remote: 0.2 kg (0.44 lb.)

PRICES

To order – go to “Contact us” in the main menu and use the form to request a Pro-forma Invoice

SHIPPING WORLD WIDE

Shipping weight: <2 kg (4.4 lb)

Please inquire for stock or any technical details

(Go to CONTACT US in the Main Menu)

To USA / EUROPE (US Dollars):

US$780:  ES-4SP Shipped