Originally Posted by reconrider8
Update... the antenna is working like a champ but for some reason I hear a whole lot better after the train has passed my position. Can anyone kinda explain this Ive heard it gas to do with the cars behind the engine radiating the signal future out but is their anyway I can pick up from the head futhur out?
Can you explain that?
Think for a moment...
If the train is passing you, the antenna is on the lead locomotive, mounted on top of the cab. As it is moving away from you, the signal will get weaker (assuming straight track).
Behind the locomotive - unless its a train of flat cars or other low profile cars.... many cars - especially autoracks and double stacks actually are above the roofline of the engine (assuming modern EMD and GE units that are taller than the SD40's etc).
So, given that... if there is any "reflection", it would be towards the front of the locomotive and the signal will be attenuated to the rear of the train.
In any case, you need to drill a hole and mount the antenna properly and/or get a really good scanner.
There are too many variables to properly answer your question. The same scanner and antenna can perform differently between different vehicles. The best answer that can be given is:
-Use a high quality scanner
-Drill a NMO hole
-Use a high quality NMO antenna mount
-Use a high quality scanner antenna or commercial antenna such as Larsen or Comtelco
-Properly run your power wires as stated in the users manual
Aside from all of the above - its all guessing and experimenting