[amsat-bb] Using AR Preamps with Icom IC-9100 in Satellite mode

hdskullfire2 . hdskullfire2 at gmail.com
Tue Apr 4 14:22:55 UTC 2017

I have two Advance Research Pre-amps on order. Both a MSP144VDG-160 &
MSP432VDG-160 which are going to be installed local in the shack. The
reason being is that I have 2 switchable array's. One is my M2 2M/70cm
satellite array and the other is my 2M/70cm LFA array. I generally only use
one array or the other.

My coax runs are short and I want to keep the pre-amp inside out of the

Here is my question. I can either feed 12V to each preamp and have a on-off
switch to manually select the one I want, or I can feed power to them via
coax that the 9100 supplies by turning on the 144 and 432 pre-amp On-Off
selections in the 9100 menu. I would rather go with the 9100 supplying the
pre-amp relay power instead manually supplying separate power.

Here is what I need to know, in single band operation I know that each
pre-amp relay would activate when on a particular band either 144 or 432.
But what happens in satellite mode? Are they both active at the same time?
I'm concerned about relay activations. I keep hearing about sequencers, is
this required?

Let me know.

Steve NS3L
Nazareth, Pa.

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