Scanner Tales: Frank and the Detector

N9JIG

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A short one today:

My friend "Frank" (name changed to protect the sort-of innocent) is a retired local cop and railfan. We talk several times a day, almost every day. “Frank” lives in suburban Chicago near the BNSF railroad’s Chicago Sub. There is a defect detector on the BNSF a few miles west of him. He can hear it when he gets in the car outside his neighborhood but not from his home scanners, either with an ST-2 on the roof (~25’ AGL) or a GP-3 mounted in his back yard about 10 feet off the ground.

He is sort of obsessed with hearing this detector from home! He even has it as the ringtone on his cellphone when I call him. When he gets closer to it and hears it, he calls me in excitement! He drove out there to try and find it but could not get close enough to see it. According to Google Earth it is near a park but is inaccessible without serious trespassing issues, he tried! We then found a friend with a drone who flew over it and got some great pictures. We later (half-jokingly) considered replacing the antenna at the detector with a higher elevation or gain antenna. Could you imagine the conversation with the BNSF police:
  • BNSF PD: What are you doing?
  • WS: I am replacing the antenna on this detector.
  • BNSF PD: Why?
  • WS: So I can hear it from my house.
  • BNSF PD: Why?
  • WS: Because I want to.
  • BNSF PD: But you don't work for the railroad.
  • WS: I know, but I just want to hear the darn detector!
  • BNSF PD: What do you want to post for bond? (as the handcuffs click)

He does have a better and higher VHF antenna on his house (about 35’AGL) but cannot get to the cable right now, he needs some help moving his radio cabinets to get to it. He hopes that antenna will allow him to hear it.

Has anyone else considered extreme measures to improve the ability to hear a specific target?
 

IC-R20

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Has anyone else considered extreme measures to improve the ability to hear a specific target?

All the time. With my love of business band scanning I’ve phased together 3 UHF yagis fedback through that stiff rg11 quad shield stuff back In 2019 to listen in on the JC Penney down the road from me, I’ve also bought one of those broadband folding Chinese yagis back in 2023 and took it hiking up a mountain ridge to catch a knife edge signal from the prison DMR cap+ system in adjacent valley, not bad considering I did a line of sight check with my drone and found out I would need at least 800 feet of tower to get a direct signal. I currently have the yagi folder taped to my wall in a way that faces the clothing store across the street. A new Marshall store opened in town earlier this year and I keep meaning to go inside and check if there’s any two way use.

I also made that post earlier a couple months ago where I buzzed a cable OTA feeder station close enough to read the antenna model.
 

CrabbyMilton

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Yeah those detectors are rather low in power. You almost have to be right next to them to hear them.
 

ratboy

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I wanted to hear a detector in Indiana (from Maumee near the turnpike and river) that I was able to hear on my 2 meter beam on an omni antenna. I had a Cushcraft Ringo, the big one, in the box, and decided to put that up on the top of my 40 foot tower and sprung for the really good coax for it, too. After hiring a local antenna place that literally charged me a $25 "travel charge" to drive one block out of Toledo(guaranteeing that I would never hire him again), it was up and it was fantastic. For a couple of weeks. The number of detectors I could hear on my Icom R-7100 was amazing, not to mention the loads of rail traffic. I could hear a couple in Indiana, and a bunch in both Michigan and Ohio. I was very happy. Then we had a storm, and the seal on the coax/antenna connection leaked and the coax was ruined. I called another tower guy and replaced the coax with cheaper stuff and it was still good, the Indiana detectors were just a memory, and all in all, the performance wasn't there compared to the original set up. During the next winter, part of the Ringo disappeared, and I just decided that was enough. I was purely mobile/handheld after that.
 
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