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How does one read the radio if there is a communications error when you try. With the cables and set up I have I can program the radio, but for some reason the tuner program won't read the radio. What kind of cables do I need? Or does this tuner require an actual serial port? I am using a usb to serial connection cable (Iogear with prolific chipset).

This isn't actually a Longlines site. It looks like an AT&T shorthaul site, that would have been used for intercity traffic. The DR6 radios are digital radios that came into service about the same era that AT&T was being broken up. The longlines sites were almost exclusively analog TD-2 4 GHz, ARA-6 6 GHz and some 11 GHz radios. AT&T atill maintains an extensive shorthaul network for areas where fiber is impractical. Many of them in my area (Southern California) are separate prefab buildings next to the old concrete hardened buildings built back in the 1960's. This site looks like one of those prefabs. They share the tower with the big horns but only used parabolas. Retired from 45 years in point-to-point microwave here.

So cool 😎 thank you so much for this!

MD-UV390 Plus is great, specially if you use it with OpenGD77.

We had a family friend who worked for AT&T and he told me once he worked for the "Long Lines." (This would have been in the 1960s.) I didn't know anything about it and he offered no more information. But my teenage mind pictured super-long wires carrying telephone calls. Today I learned that "long lines" really didn't involve "lines" at all! Thank you for a very interesting video.

@20:15 you talk about pressurized signal lines, but I think they used nitrogen to pressurize the lines. Not just air. Nitrogen preserved the inside of the lines. Oxygen would degrade the lines.

Where is that located

I would say that that means that it was designed to be pressurized to atmospheres! To counteract any leak as you were saying basically the high pressure in the building would yes Force the air out of the building but that means it would not let any air come in. The best comparison I can give for that would be when you go to the store in the summertime the fans that they have running overhead of the door they blow air there because it keeps flies out...

Well it's rated to do that however that would be destroyed.

Thank you for making this video! I couldn’t figure it out to save my life.

Other doors, back door, 'rec' door, front door maybe what the bottom left of the sign may mean?

this is awesome. thank you. I love repurpos-able "commercial grade" radio equipment

also I love how you killed the lights in some of these shots. not only was it /aesthetic/, it was a cool shot of how the site would've looked chugging away unattended. nice

you're a comms historian, thank you. this is so cool.

where is this incredible building

I’m afraid all your footage is only going to bring negative vandalism .I wish you would say that these are still federally protected, and you will be prosecuted for trespassing, these are still a redundant system that could be used by the government and AT&T for communications for civilian and military.

You’re awesome-thank you for posting this! 👍❤️‍🩹🙏

12 inches of water column is .43 PSI.

Awesome video brother, old comms to me personally are like beautiful works of art.

Ultra neat. My objective when I was younger was to work for the telephone company, but I chose banking instead. Must ask, where did you obtain your vast knowledge of all this equipment? Next, what was the objective of this power-up? Since you mentioned there were no upstream or downstream facilities (sad) I’m assuming this was just to test the on-site equipment functionality.

Oh yeah, love the Lazerhawk King of the Streets, powerup.

Wouldnt firing up the microwave rf amplifiers without the horns on the tower make VSWR spike and burn up the transmitter?

Porque se quedó mudo mi uv390 plus DMR DIGITAL instalé Firmware S119.023 ( CP versión v02.34). Ayuda porfa favor!

Did you have to pull the pepsi dispenser to access the basement?😊

It was all of the United States and Canada and it was owned by AT&T and The Bell System, western Electric and Canadian National Railroad and Canadian Pacific Railroad it entered service in 1958 as CNCP Telecommunications on the Canadian/Norad side of the border.....

Nice video. I worked for Motorola as a Sr. Field technician for 30 years. I’ve been in a few of these buildings. Great memories. They were awesome years.

That transformer may contain PCB oil as well.

@00:30 look at the curved wave guide in that image. I own a piece of Western Electric (KS-15874 L2) test equipment which was decommissioned from AT&T Long Lines. Too bad the equipment could not go to the Connections Museum in Seattle, Washington. @10:36 Battery #3 on the lower rack appears to be suffering from sulfate on the plates. I'm surprised more of the batteries don't seem to be visibly beyond life expectancy.

FREAKING COOOOOOOL. Thank you very much.

I saw the lighting controls does it have xenon flash

The fresnel effect

I have a video on my TH-cam channel of a very large long site that is still active. I used to work for ATT

Would it be possible to take my old Acer aspire 5742 model PEW71 laptop running Windows 10 64-bit and use it to program or should I downgrade to 32-bit Windows 10 on it via a thumb drive? I hope it will work.

Imagine at 6Ghz how much power they were out at this days... certainly if a bird had landed on the antenna for a few minutes... I don't know if it would have recovered...

i enjoyed the history adventure!

Ok, don’t giggle as I’m simply a wistful outsider looking in. In the very late ‘70s, I wanted to work for the telephone company OR go into banking. Because of convenience, I chose the latter. Of course, I did not lose my obsession with telephone equipment. The bank I worked for (at their local main office) sported a fancy Northern Telecom PBX system and I sporadically played “operator”. The fact than inbound calls could be easily connected to any of our branches by keying three digits amazed me. One of our branches was located quite far (right on the Tennessee/Kentucky state line-we were TN based). Apparently, that was an expensive endeavor as that branch was only given one “internal” line. During one of my many experiments, I managed to confuse the entire system by obtaining an outside line and then calling our main number and answering it. I connected that call to various places and eventually a bizarre “buzz” started invading all calls. I played dumb.

Thank you for this wonderful and inspiring video! I became a radio tech back in the 1970s while still in high school. I observed a great deal of evolution of supposed technology. These facilities fascinate me to the extreme. As a lady who works with her hands, I deeply appreciate the amount of forethought, design, build and installation of these incredible facilities! Just look at the quality throughout and the pride of those who assembled everything from the individual components to the pure craftsmanship of the installation and execution. People had an incredible work ethic in those days, and pride in one's work was highly respected and admired. ATT and Western Electric where renown for the absolute best in everything they did from the top to the bottom. Everything was built by Western Electric and it was designed to all work together in one beyond belief system. It seems today that only Motorola Solutions, the folks who make police, fire, federal and military radios maintains the same degree of craftsmanship and quality. Made in America really meant the best, and we need to get back to where our fathers were! Thanks again, Alexis

Where does one learn this technology to be able to do what you are doing?

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They are NOT standard handsets. They are H-350 handsets. If you connect them to a radio you can hear but can't talk. Not all base telephones are secure. It depended on what and where the phone was located.

Or you can power both phones separately. Power can be 6V, 9V, batteries or wall power adapter that provides 6 VDC to up to 48VDC

There are Recordings of the buzzer failing. Maybe if the fail can be reproduced the sound device can be pinned down.

24 Volts? Typically the telephone world was -48 volt DC positive ground.

I was doing this job in Europe for 10 years now i switched and work on a desk. They still leave the coax on old systems iltill they get decommissioned

I wonder where those waveguides go, there are no antennas on the tower for those frequencies

Doesn’t Harris support the radio for software? That would be odd if it’s not available. Heavy? My Astro Saber is heavy and just a single band! I have the tag on my radio BUT it is wearing off. I know where the radio came from and it is legit. I have an XTL5000 mobile and there was a small learning curve for programming the radio and there is little difference between the programming of the the XTL and the APX. Were there mobile adapters similar to the MTVA or SVA that would allow you insert it into the charger and you would have external microphone, antenna connection and external speaker. I am a radio tech (since 1985) and also a licensed Ham since '91 so I use my mobile to monitor my private carrier repeater, I work with several LE agencies where I have to monitor their systems for troubles. I even carry the brick with me to the EU and work Ham repeaters in several countries when installed in my vehicle over there. Let’s face it, you get what you pay for! The big M is very expensive but worth it. Back in the 80’s there was a comic making the rounds, it showed three individuals, one was an Arab carrying an AK and was titled the "Arab Terrorist", the second individual was dressed in what appeared to be British island clothes carrying a stick of dynamite and was listed as "The Irish Terrorist", the third individual is wearing a suit and fedora carrying a briefcase with the Motorola logo and was titled, "The American Terrorist". With what they have always charged for their new products it is a real terror at the cost.

@27:00, LazerHawk King of the Streets beat fits perfectly with this video. Awesome!

I’d love to know about how much of the 2g and 3g infrastructure is actually still in use if any. We’re told it’s all gone and the carriers decommissioned their 3g networks quite some time ago. Are these standards still operating anywhere in the US?