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Antenna-Disconnect-Switch
To protect your radio equipment from damage due to surge voltages
Table of Content
Introduction .............................................................................................................................. 2
Functional diagram .................................................................................................................... 2
Electrical characteristics ............................................................................................................ 2
FUNCTIONAL DESCRIPTION AND OPERATING GUIDELINES .......................................................... 3
Power Supply ............................................................................................................................ 3
"REMOTE OFF" Input ................................................................................................................. 3
Installation ................................................................................................................................ 4
Earth ground connection ........................................................................................................... 4
Circuit Diagram ......................................................................................................................... 4
Connections .............................................................................................................................. 5
ASSEMBLY INSTRUCTIONS ......................................................................................................... 5
Component layout diagram ....................................................................................................... 5
Activation Methods ................................................................................................................... 8
Measurements undertaken - Transmission loss and Reflexion loss ............................................. 8
Disclaimer ................................................................................................................................. 9
Copyright .................................................................................................................................. 9
Parts List ................................................................................................................................. 10
© 2018 - DL4ZAO - Status: Preliminary v010
ADS
Assembly and Operation Manual
ADS
Seite 1
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Summary of Contents for ADS Antenna-Disconnect-Switch
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Page 1: Table Of Contents
Antenna-Disconnect-Switch To protect your radio equipment from damage due to surge voltages Assembly and Operation Manual Table of Content Introduction ..........................2 Functional diagram ........................2 Electrical characteristics ......................2 FUNCTIONAL DESCRIPTION AND OPERATING GUIDELINES ............3 Power Supply ..........................3 “REMOTE OFF“... -
Page 2: Introduction
ON, it re-connects the antenna for normal operating. It and can handle 1.5 kW RF Peak Power up to 50 MHz. With reduced power it is possible to use the ADS even at higher frequencies. Important notice: For maximum protection a good earth ground connection is essential. See chapter “ground earth connection”... -
Page 3: Functional Description And Operating Guidelines
Power Supply The Relays in the ADS are operated with a smoothed or stabilized DC supply voltage in the range of 10 to 18V. The relays need a current of 60 mA for safe switching. At 12V, the typical operating current is 70 mA, at 13.8 V the current is 85 mA. -
Page 4: Installation
To provide effective protection the ADS requires a direct conduction path with sufficient diameter to an suitable earth ground point. Earth ground is tied either to the ground-stud of the ADS or via the flange cover of the box mounted on a thick metal plate, which needs to wired to the ground earth system. An effective station ground bonds the chassis of all equipment together with low impedance conductors und ties into a good earth ground. -
Page 5: Connections
Connections FROM RADIO TO ANTENNA „Remote OFF“ earth ground stud DC-supply cable (10…18V) ASSEMBLY INSTRUCTIONS Component layout diagram Distances given in mm (25,4 mm = 1 inch) © 2018 – DL4ZAO – Status: Preliminary v010 Seite 5... - Page 6 Mounting of the pcb in the aluminum box Note: The SO259 bulkhead socket „TO ANTENNA“ and the RCA Phono Plug “REMOTE OFF” must be mounted completely isolated against the metal box. For this purpose a specific set of isolation washer and busher is needed.
- Page 7 wire from K1 in the opening of the rf-bulkhead socket’s core conductor. Fill the hole with solder. Hint: Screw a PL259 Plug at the outside to avoid deformation of the socket’s insulation caused by the soldering heat. Attention: when inserting and soldering the wires into the the pcb pad make sure to avoid a shortcut of the wire ends with the bottom of the metal box.
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Page 8: Activation Methods
For radios that have a supply output for external accessories, connect the supply cable from the ADS to this output. When the radio turned ON, supply voltage appears on this output, and the ADS gets switched ON. Wire the RED wire to plus, and the BLACK to common. -
Page 9: Measurements Undertaken - Transmission Loss And Reflexion Loss
Frequency (horizontal Axis) 5kHz to 150MHz, 15MHz/Div Disclaimer The ADS Antenna-Disconnect-Switch is a supplementary protection device to protect the station against high-voltage events that are induced by nearby lightning strikes. It may not be sufficient to act as a lightning arrestor during a direct lightning strike. -
Page 10: Parts List
Parts List Pos. component nr. value / type description 100nF, ceramic capacitor labelled as 104 10nF, ceramic capacitor labelled as 103 4,7 pF ceramic capacitor high voltage type, 3KV, RM5mm labelled as 4.7pF 3KV D1,D2 Diode 1N4007 LED, green 5mm K1,K2,K5,K6 Solder-Pad on PCB No component, pad on pcb... - Page 11 Coaxial socket SO239 female socket Bulkhead connector SO239 Bulkhead connector with ground soldering tag Rubber grommet Power Cable Twin core flexible lead red - black Buchse RCA/Cinch „Remote OFF“ for isolated assembly Miscellaneous mechanical Screws and washers parts M4 (USA: #8 UNC) 6mm distance sleeves Antenna Socket Isolation PE washer , bushing...
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Page 12: Dl4Zao – Status: Preliminary V010 Seite
© 2018 – DL4ZAO – Status: Preliminary v010 Seite 12...
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