Arcom RC210 Repeater Controller

[W7WAC]

I have owned and operated this repeater for over 5 years, it has done well to say the least, the down side is the unit is installed high on a mountain top and access to the unit is over 3.5 hrs away and a difficult trail at best. I have done as little custom programming to the unit as possible so as not to tempt fate. As we have more and more hams coming into the hobby so adds the problems repeater owners have to put up with or give that side of the hobby up.
Yesterday the repeater was being rapidly dead keyed for almost 20 minutes, an obvious delinquent, lacking sense and brains, but all the same I was down here listening to this and as my blood pressure hit the top of the scale I realized I was helpless, awaiting the repeater to pop.
Now my question: Is there any fast and safe way to disable the controller without risking a failure to restart? The main repeater radio is on port one, port 2 is a link radio that is inactive at this time, but can be linked simply by punching in the code to link port 1 & 2. I believe there is a code to unlink all ports, but would that disable the radio transmit? I guess what I am asking is in the event this happens again, can I just simply punch in a code and disable the repeater until the problem leaves the area?
As I have explained, I have done very little programming to the controller and realize if I mess up someone , probably me, has to climb the mountain and fix it, all well and good but I am getting a bit old for all of that and thought maybe someone may have a simple solution.

I will take the time to thank you all in advance for your consideration and maybe a solution to my problem,
Wayne
W7WAC

[KB4QAA]

It is common to have some repeater controls being made via tones on the repeater input. This is problematic if the receiver malfunctions, or if there is an interfering signal such as you mention. An alternative is to have a second receiver, e.g. UHF, that is use solely for control purposes. A yagi pointed at the site might be helpful in ensuring adequate signal strength for the control link.

Consideration to easy your blood pressure
Unless you have evidence of malicious interference, in my experience the causes of extended repeater keying are usually distant signals due to enhanced propagation or due to local intermod/mixing.

73, bill