Amplifier keying relay buffer interface contacts OPEN or CLOSED on transmit

Description

The picture is an example to how it looks, it a custom made device
ONE radio will control BOTH RCA jacks
By default, this box will provide CLOSED contacts when not activated
The contacts will OPEN when activated (when you key this from your radios T/R keying circuit)
You can tell us if you want us to build this as:
BOTH RCA jacks CLOSE on transmit (they would be OPEN on receive)
or
ONE RCA jack OPENS and ONE RCA jack CLOSES on transmit (this option would allow you to KEY your amplifier on the jack that closes and deactivate your receive antenna power on the jack that OPENS)
How do you specify if you want something different from default
If you do not specify, this will come with BOTH RCA jacks OPEN on transmit (
closed on Receive)
How might you use this?
One example: Let's say you want to power something (like a powered receive antenna) and all you want to do is remove power from it when you transmit. Put the positive voltage from your power supply to one terminal of one RCA jack and the active antenna that requires this power to the other terminal.
This means the CENTER of one RCA jack is ONE terminal and the OUTSIDE of the SAME RCA jack is the other terminal.
The negative of your power supply to the receive antenna is NOT switched and would be your common connection.
DO NOT put positive AND negative of your power supply to the RCA jack!, this will short your power supply!
When the RBI-12-custom is not activated (your radio on receive), the center and outside of the RCA jack is closed (shorted center to outside). When activated (when you key this from your radios' amplifier keying circuit) the center and outside of the RCA jack will no longer be connected, therefore the circuit is now OPEN.
Our box will draw <5 MA from your radio and will key any TWO separate amplifiers. A very handy accessory. Get one BEFORE you damage your radios amplifier keying output!
RCA jacks in and out
Needs 9-15 VDC at only 65 ma. 5 feet of wire and universal 2.1 x 5.5 mm DC connector included
Connect our RBI-12 to whatever you need to have the contacts OPEN on transmit
Relays rated up to 240 Volts at 5 AMPS, switch AC or DC any polarity!
Genuine relay used for switching (not an easy to damage solid state device)
Both RCA jacks switch at the same time
Both RCA jacks are completely isolated from each other
100% hand made and tested by Hams for Hams in Colorado
This high quality device is powered by your station power supply or any filtered DC source from 9-15 VDC (only 65 ma required) Need the best DC power supply? See our ebay store for SAMLEX power supplies.
Need to key only one amplifier? See our eBay store listing for the RBI-1 amplifier keying relay interface
Need to key up to SIX amplifiers? See our eBay store listing for the RBI-6 amplifier keying relay interface
Need to key MORE than two linears? Contact us for custom made amplifier PTT relay keying interfaces. (We just finished a SIX unit amp keying box, keyed from a single radio)
When connecting your Radio and Amplifier, there may be switching voltage, polarity, and current incompatibility  that can cause damage to your radio or amplifier if connected without a switching interface between them. Even if your internal radio switching looks like it might be usable, it is wise to have an extra degree of isolation between your amplifier and radio with our relay buffer interface.
73, Dan W7RF ( Radiodan )
Ham Radio linear amplifier amateur amatuer radio interface relay keying
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