[Johnson] Invader 2000 Power Switching

[Singley, Rodger]

The simplest way is just a manual coax switch to select either the low or high output to go to your T/R relay.  A little more involved but very convenient is to use a 115 volt relay with the coil fed from the switched AC via the PA filament switch.  You could also mount this relay internally so you just have one external coax connection to use on the back of the Invader 2000.  

With the relay, tie the common to the transmitter input of your T/R relay or switch.  Then the normally closed contact goes to the exciter RF output and the normally open goes to the high power output and the choice will be made automatically when you switch the amplifier filament switch.

Rodger WQ9E

-----Original Message-----
From: johnson-bounces at mailman.qth.net on behalf of Al Parker
Sent: Sun 3/28/2010 4:42 PM
To: dhallam at rapidsys.com; Johnson List
Subject: Re: [Johnson] Invader 2000 Power Switching
 
Hi David,
    I'd use my Inv. 2000 more often if there was an easy way, I'm hoping for
an answer, too.
73,
Al, W8UT

----- Original Message -----
From: "David C. Hallam" <dhallam at rapidsys.com>
To: "Johnson List" <Johnson at mailman.qth.net>
Sent: Sunday, March 28, 2010 2:22 PM
Subject: [Johnson] Invader 2000 Power Switching


What methods has anyone used for a convenient method of switching
between the low and high power antenna connectors on the Invader 2000?

David
KW4DH
--
"One of the evils of democracy is, that you have to put up with the man
you elect whether you want him or not."  Will Rogers

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