Tag Archives: TV signal splitter

2015/06/25 (R) The Mouse

Brighton Honda called yesterday in the afternoon to get permission to do additional work on my car.  Since we plan to keep the car for a while, and then perhaps give it to our son, it was the kind of work that needed to be done regardless of the costs.  They called back later to indicate that they would not have it aligned before closing time.  That was fine with us as it would have been inconvenient to impossible for us to get there by 6 PM to pick it up.  Linda told them to call in the morning when it was ready.

The top of the 40-foot tower from the WNW showing all of the antennas and the pulley with the haul rope.  The weather had definitely deteriorated from the day before.

The top of the 40-foot tower from the WNW showing all of the antennas and the pulley with the haul rope. The weather had definitely deteriorated from the day before.

It is amazing how attuned we become to routine sounds and how sensitive we are to non-routine ones, even (especially?) while sleeping.  So it was last night that I was suddenly aware that one of our cats was making a repetitive sound that was unusual.  I turned on my flashlight, hoping to not disturb Linda, and got out of bed.  Both cats were hunched down on the floor on Linda’s side of the bed with Jasper in front.  He was the one responsible for the sound and the reason was next to his head and about 3 inches away; a little dark gray mouse.

My first thought when I see one or both of the cats with a mouse next to them rather than in their mouth is that it is dead but that was not the case.  This mouse was alive and apparently not injured.  I have seen this behavior before in which the mouse basically “plays dead” and the cats leave it alone but watch it carefully.  Mice seem to know that cats are triggered by movement and that if they sit very still the cats just sit there and guard them.  It was 4:30 AM and I was not fully awake so I do not recall the exact sequence of events, but the mouse somehow ended up in our master bathroom.   I do not recall what I did with the cats but I think I went and got a box with high sides and tried to get the mouse to go in it and it made a run for it towards the bathroom.  Linda was awake by this point so she got a towel for me.  I went in the bathroom and used the towel to block the gap under the door and prevent the little critter from getting back into the bedroom while I tried to get it into the box.  I was unsuccessful and it managed to find a place to hide in the hot water baseboard radiator.

Linda got one of the live traps we recently purchased and baited it with the recommended saltine and peanut butter.  We set the trap near the radiator, turned out the bathroom light, shut the door, and tried to plug the gap with the towel from the outside, figuring we would deal with the mouse in the morning.  Juniper kept pawing at the towel and pulling it back from the door so we put both cats out of the bedroom and shut the door.  They found that confusing as they sleep with us and generally have the run of the house.  One or both of them pawed at the door meowing to get back in for quite a while.  It wasn’t the best night’s sleep we have had and the timing was unfortunate given the hard day of tower work.

Brighton Honda called at 8:01 AM to let us know the car was ready.  Hello, I’m awake now!  I checked on the mouse and it was now safely tucked away on top of the radiator fins inside the housing where neither the cats nor I could get to it.  We decided to leave the live trap in place, sealed the gap under the door, and kept the bedroom door shut to keep the cats out.

I had planned to drive to Isringhausen’s U.S. headquarters in Galesburg, Michigan today but first we had to get my car.  As long as we were headed that way we decided to go to the Brighton Panera for coffee, but had toast and juice for breakfast at home before we left.

The 100,000 mile service is extensive and includes changing the spark plugs.  Beyond the routine service items the Element needed a new ball joint and tie rod and had a stuck brake caliper pin that had to be repaired.  Given the front end work I also had them align it.  Butch and I rebuilt the front brakes last year so I was surprised that there was an issue with them, but the car has been towed and driven in some harsh environments since then so that may have been a factor.

The Panera at Grand River Avenue and I-96 is not one of our favorites.  More often than not we end up with coffee grounds in our cups and the bathrooms are not maintained as they should be.  Today was not the first time we have been to this location that the men’s restroom was out of toilet paper.  It is also often freezing cold inside the restaurant and today was no exception.  The weather was overcast and a bit gloomy but the outside temperature, while not warm, was much more comfortable than inside.  We were also unable to connect to their Wi-Fi signal, which is generally useable.  That’s pretty basic stuff to not be able to get right and falls squarely on local management in my opinion.

While we drank our coffee I called Rick Short at ISRI to make sure he would be in but I got his voice mail again.  I asked for a call back but never got one so I did not make the trip to Galesburg.  Apparently they have better things to do than be of assistance to me.  I only want to buy one chair, not a fleet of chairs, so I understand my relative unimportance, but I don’t like it just the same.  We decided to spend the day at home completing the work from yesterday, which had made a mess throughout the house.

One of the things we needed to do was register our cellular booster system.  Given that it is a five band device I was not clear on whether we had to register it only with Verizon or with all of the carriers.  I called the company we bought it from, Cellular Solutions, and talked to Judy who said we only had to register it with the carriers we personally use.  For us that is Verizon Wireless.  Registration was via the Verizon Website and was simple enough.  It did, however, require me to log in to our My Verizon account and navigate through a couple of screens to a page where we could enter the information from the label on the box.  The serial number was on two peel off tags, so one of those went on the booster and the other one went in the manual.

With the unit registered I turned the power switch on and watched the ‘Alert’ lights all go solid yellow.  As I mentioned in yesterday’s post solid yellow lights are not described anywhere in the manual.  I called Cellular Solutions back and said I had a technical support question.  The woman on the phone took my name and number and said someone would call me back.

Since I was apparently taking care of phone chores I decided to call Universal Towers and inquire about their B-30 base.  The woman who answered the phone never gave her name but was able to answer some questions.  She indicated that their base might or might not be compatible with older Heights Tower products, depending on exactly which product I had, and that I would have to talk to the owner, Bill, who wasn’t there at the moment.  She did know that the outside-to-outside measurement of the legs on a B-30 base was 30 inches and the base cost $290.  She also told me that the larger bases, like the B-30, consisted only of the three rods with the mounting yokes on top; the three rods were not otherwise connected together in any way.  She also confirmed that the ‘U’ shaped yokes at the top of the base rods were welded on and not adjustable.  The normal installation procedure involved connecting them to the bottom of the legs of the first section of the tower, setting them in the hole as the concrete is poured, and adjusting them by moving them around until the legs of the tower were plumb.  That sounded to me like a process where a lot could go wrong and not be repairable.

I pulled a 75 ohm coax out of the ceiling of the basement yesterday.  We laid it out in the basement to see how long it was and it looked to be at least 60 feet.  Linda suggested we test it before running it through the basement ceiling which was a very sensible idea.  I unplugged the power adapter for the TV amplifier power inserter, detached the coax that feeds the TV in the bedroom, attached the downstairs cable, and connected the other end to the basement TV set.  Linda set up the TV for Antenna input, did an All Channels scan, and got the same stations we got yesterday, minus a couple.

In spite of what appeared to be acceptable performance I decided I wanted a new coax cable and Linda wanted to return three of the ropes I bought at Lowe’s but never used.  She found the receipt and we went to Lowe’s.  They had a good quality RG-6 quad-shield coax (75 ohm) in various lengths including 50 feet, which is what I needed.  At the register I decided to buy two more 40 pound bags of solar salt.  I am not an impulse shopper as a rule but their supply of Morton Solar Salt was very low and stocking up seemed like a good idea.

We stopped at Teeko’s to order coffee.  Mary took our order and rang it up; one pound each of the three different half-caff blends that have become our standard.  We took note of the fact that the Bennigan’s restaurant building on the northwest corner of Grand River Avenue and Latson Road was gone and a sign said a Panera would be coming soon to that location.  We didn’t say anything to Mary, but that cannot be good news for Teeko’s.  We will continue to buy our custom roasted beans at Teeko’s as long as they are open but it is going to be difficult for them to compete with a $2.25 cup of bottomless coffee, free Wi-Fi, a restaurant, a bakery, drive through service, and ample parking with great access to I-96.

When we got home I checked the live trap in our master bathroom and we had captured the mouse.  We took the trap to the northeast corner of the property, towards our neighbor’s pond, and set it free.  It did not want to leave the trap and I had to encourage it to go.  Once it hit the ground, however, it scampered away looking for a place to hide.

We then worked on running the new coax from the basement TV to the sump pump room above the suspended ceiling.  I disconnected the power inserter for the amplifier and disconnected the old coax we had tested earlier.  I notched a ceiling panel at the corner of a boxed support column behind the basement TV to allow the ceiling tile to go back into place around the coax.  We then installed one of the wire channels to contain and hide the coax from the ceiling down to the TV set and connected it to the back of the set.

In the sump pump room I attached the coax from the cable entry box (CEB) to the input of the new 1-to-2 signal splitter.  I attached the coax for the bedroom TV to one output from the splitter and the coax we just ran to the other output.  I mounted the splitter on the wall of the sump pump room and secured the cable coming from the CEB to the ceiling.  I then plugged the power supply for the power inserter back in to an AC outlet.  Linda scanned for channels and verified that everything was working correctly.  We then installed the other wire channel alongside the trim on the bedroom doorwall to route and hide the cable coming up from the basement.

I continued to fuss with the cell phone booster gain settings.  We had not gotten the promised return phone call from Cellular Solutions Technical Support so I called them.  I got Judy again and explained what I was seeing with the solid yellow lights.  She checked with her tech support people and they said the manufacturer (SureCall) told them the solid yellow was the same as the blinking yellow; that the booster was adjusting the gain and it was “normal.”  The manual says that normal is when the light is off, so I’m not sure I buy this explanation, but based on that I left the booster turned on.

With all of that done we started cleaning up the tools and materials we had scattered over two floors of the house.  I decided that was also a good time to start a load of laundry, although it was actually rather late in day for that.  I did three loads by the time I was done and it was sometime after 10:30 PM before the last load was dry.  I needed to be up at 7 AM to be at breakfast in South Lyon at 8 AM as our SLAARC group would start setting up for the ARRL Field Day event at 9 AM.

 

2015/06/22 (M) Cable Me This

We turned the air-conditioning off last night and enjoyed the fresh air, pleasant temperature, and lower humidity.  The overnight low was 58 which made for good sleeping.  We awoke to blue skies and what we thought would be a picture perfect Michigan summer day until Linda checked the morning news (iPad).  There was a story about a storm that moved through the upper plains yesterday and had a bead on Michigan for later today and this evening.  What had been a 10% chance of rain for today had been replaced by a forecast for strong-to-severe thunderstorms with the possibility of strong winds, large hail, and tornadoes.  Ahhhh, summer in Michigan.

Not ones to sit around and wait for the apocalypse we did what any sensible couple would do, I made coffee while Linda reheated the last of the Baked French Toast from yesterday’s brunch.  We had breakfast and then sat on the deck enjoying our coffee and contemplating the end of the world, or at least the possible destruction of our brand new roof.  But it’s insured, so “no worries, maan” as they say in Jamaica.  More coffee please.

We have a whole house generator that runs on natural gas so as long as a storm doesn’t damage it we can survive for a very long time without electric utility power.  Losing our AT&T Internet connection, however, would be a genuine hardship as that would require us to use our Verizon Mi-Fi (without the benefit of the new Fusion5s cellular booster which I plan to install on Wednesday) or go to Panera, McDonalds, or one of the libraries to get online.

Keith showed up around 10 AM to cut the grass.  We were hoping he would make it as we have not had too much rain this past week and the last few days in particular have been dry.  I think this is the first time this season he has been able to cut our grass without it being wet.  It looked nice when he was done.

I got a call from Phil Jarrell.  He had been successful in reaching Mike Fearer of Bid Rite Concrete on Mike’s cell phone.  Based on Phil’s description Mike was interested in looking at our tower foundation project and was expecting me to call so I did, using my cell phone, and this time I was able to reach him.  It turned out that the information about his business on the Internet is out of date.  He is no longer in Whitmore Lake but now operates from near M-59 and Latson Road, not far from us.  We agreed that he would stop by tomorrow at the end of the work day to look at our project.

I did not want to do a lot of heavy work today, as I was still a bit tired and sore, but I needed to mount two lightning arrestors in the cable entry box and mount the cellular booster in the sump pump room so I could figure out what coax cable lengths I needed and go get them from Scott Adams (AC8IL) at Adams Electronics in Wixom.  But first I called Mike (W8XH) to let him know I was planning on Wednesday for the tower work, assuming he was still available and the tower was still standing.

Cable entry box showing copper ground plane with Morgan lightning arrestors (lower left), control line arrestor (center top), and cellular and OTA TV arrestors (center).

Cable entry box showing copper ground plane with Morgan lightning arrestors (lower left), control line arrestor (center top), and cellular and OTA TV arrestors (center).

I determined that I needed two coaxial cables and ordered them from Scott by phone rather than take the time today to drive to his place of business.  They will both be LMR-400 with N-connectors on both ends.  One will be 50 feet long, for our 2m/70cm Diamond X50-N VHF/UHF base station antenna, and the other will be 15 feet long, to get from the cellular booster lightning arrestor in the cable entry box to the repeater (amplifier) in the sump pump room.  I will pick them up early Wednesday morning and install them.

One of the lightning arrestors was for the SureCall Fusion5s cellular booster system.  It has N-connectors on both ends, one of which is intended for bulkhead mounting.  It came with an angle bracket that fit over the bulkhead end and I used that to mount it.  I used the 2′ length of LMR-400 that came with the booster installation kit to position the lightning arrestor so the cable from the repeater could exit one of the 2″ conduits and bend around and connect to it.  LMR-400 is a low loss, 50 ohm impedance, coaxial cable that can handle high RF transmit power.  The cellular booster only has a 1 Watt transmitter but is operating at frequencies where energy losses in coax cables become significant.  To do what it does LMR-400 is just under 1/2″ in diameter.  It is fairly stiff and does not make sharp bends so cable runs and connections have to be carefully planned.

The other lightning arrestor was for the Antennas Direct DB8e OTA TV antenna and serves a dual purpose as the power insertion device for the tower mounted amplifier.  The coax cable for OTA TV signals is typically 75 ohm impedance RG-6 with F-connectors.  It is half the diameter of LMR-400 and much more flexible.  It is also typically used to receive low power signals and convey them in one direction; from the antenna to the TV.  Because we are 25 miles from the nearest TV tower and some of the towers are 50+ miles away, I ordered a signal amplifier to go with the antenna.

Ideally you want to amplify an OTA TV signal as soon as it comes out of the antenna and this amplifier does just that.  It will mount on the same tower leg as the antenna about two feet below the antenna feed point.  However, being an active electronic device it needs electrical power to operate.  There are two basic ways that could be done.

One way would be to have power wires, such as +5 VDC and DC Ground that are separate from the coaxial cable that carries the radio frequency (RF) energy.  The two OTA TV antennas on our bus are set up this way with three wires to supply power and control the enclosed rotor.

The other way is to provide DC power through the coaxial cable itself, which is how this amplifier is set up.  The nice thing about this arrangement is that the amplifier only has two connections and they are both coax connectors that can be weather sealed.  To get the DC power into the coax cable, however, requires a special device called a power inserter.  The power inserter, in turn, requires the coax to be split into two segments so there end up being four connections instead of two.  The power inserter for this amplifier very conveniently acts as a lightning arrestor as well, which is why I mounted it to the copper back plane in the cable entrance box.

By boosting what I presume will be weak signals from distant towers the amplified signal should be strong enough to survive the trip through the coax cable to the power inserter, from there to a 1-in/2-out signal splitter, and then through additional lengths of coax to the two TV sets.

After getting the two lightning arrestors mounted in the cable entry box I took a break for lunch and then went to Lowe’s for some supplies.  When I got back home I turned my attention to mounting the SureCall Fusion5s cellular booster (repeater amplifier) in the sump pump room.  The sump pump is in the northeast corner of the basement, which is also the northeast corner of our ham shack and office.  (The ham shack occupies the north wall and my desks occupy the east wall.  Most of the rest of the room is storage.)

I gutted and rebuilt this space, with the help of long-time friend John Rauch, before we moved in and created the large closet (small room) around the sump with insulated walls to contain sounds.  I installed an electrical sub-panel in this room to provide power to the office and ham shack desks and to an RV outlet by the pull-through driveway.  I fed the power for the RV outlet through the bond on the east wall just above the concrete block foundation and ran it underground to the far side of the driveway.  It was my intention from the beginning to mount a cable entrance box next to the power feed and have all of the coax cables and control wires for outside devices enter the sump pump room in the same manner as the power.

The ham shack/office walls are finished with T-111 exterior plywood with 4″ groove spacing and I finished the interior of the closet the same way as I knew I would eventually want to mount things to the walls.  I mounted the SureCall Fusion5s booster on the west wall of the closet about a foot inside the door and just below my eye level so I could see all of the connectors, switches, and indicator lights on the top and front of the unit.  It had four mounting tabs, two top and two bottom, that attached easily to the wall with short wood screws.

There is a duplex AC electrical outlet on that wall and one on the opposite (east) wall.  The power supplies for the cellular booster and OTA TV antennas will plug in to these along with the sump pump and the charger/controller for the battery powered backup sump pump.  One of the things I bought at Lowe’s were two outlet expanders which I installed in these two duplex outlets.  I also bought a switch with a pilot light to replace a single pole Decora switch that will eventually control the light in the closet.  I installed the switch but did not complete the wiring as I have to tie it in to the light fixture which requires me to cut the power to that circuit.   I would also like to replace the bare bulb fixture while I am at it but have not yet purchased a replacement.

Although it was late afternoon I decided to install the inside antenna for the cellular booster system and run the coaxial cable that connects it to the booster.  The antenna is designed to mount to a flat ceiling and provide a hemispherical coverage area below the plane of the ceiling.  I had previously figured out that if I mounted this antenna in the main floor hallway near the midpoint of the house I could connect it to the cellular amplifier using a 50 foot length of coax cable that came with the system.

The desired mounting location was opposite the door to the hall closet and the access to the attic is through the ceiling of that closet, so that was very convenient.  We emptied the closet, removed the clothes rod, and setup our six foot step ladder.  I removed the piece of foam insulation we currently use to seal the attic access opening and climbed up, flashlight in hand to check out what was on the other side of the ceiling.

Our desired location for the antenna was free of problems on the back side so I drilled a 3/4″ hole for the mounting stud and used a piece of rebar to poke a hole through the insulation for the coax cable that came out of the stud.  Linda fed the coax and stud through the hole and I put the retaining nut on the stud from the attic side of the ceiling.  The antenna is shaped like a coffee filter, is about six inches in diameter at the ceiling, and tapers down to about four inches in diameter about four inches from the ceiling.  The housing is white plastic and blends in well with the ceiling paint.

About four feet from where we installed the antenna is a chase that runs from the attic to the furnace room in the basement.  It appears that once upon a time something having to do with the furnace ran through this chase, such as the combustion air intake.  The combustion air is now drawn through the back wall under the deck and the exhaust goes out through the east wall of the basement via a double wall stainless steel flue pipe.  The chase is no longer used for furnace or other utilities although there are electrical cables to switches mounted in the bathroom walls and it still contained a piece of 4″ plastic pipe.

I positioned myself near the chase and guided one end of a 50 foot length of LMR-400 coax down through the pipe and through the hole into the furnace room while Linda held the roll of coax near the top of the ladder and unrolled it.  At one point the coax bunched up and Linda had to go to the furnace room and untangle it.  At another point the 4″ plastic pipe slipped through the bottom hole into the furnace room which caught me by surprise.  Once the cable was mostly fed through I routed it to the location of the antenna, connected it to the pigtail coax from the antenna, wrapped the connection in weather seal tape to keep moisture out, and secured it with a cable tie.

With the antenna installed Linda started preparing dinner while I dealt with the 37 feet of coax in the furnace room.  The furnace room does not have a finished ceiling so I had access to the areas above the suspended ceilings in all of the adjacent rooms.  In particular I was able to feed the free end of the coax above the ceiling in the office and into the sump pump room.  I secured the cable with plastic cable ties at two points in the furnace room to keep it away from the flue and various hot water pipes.  I had about 8 extra feet of cable so I made a large coil with two loops such that the free end came off the loop straight down into the connector on top of the booster.  I hung the coil on the wall above and to the right of the booster making for a very neat installation.

I took a shower to try and get rid of some of the fiberglass itch while Linda finished the dish she was making for dinner.  It was a complex Indian style dish with Basmati rice, garbanzo beans, Swiss chard, onions, and shallots, seasoned with salt, black pepper, cayenne pepper, cumin seeds, garam masala, fresh lemon (zest and juice), and fresh dill that Linda grew herself.  The house was filled with the aromas of all these ingredients for a couple of hours as they were prepared and combined into the final dish.  It tasted as good as it smelled with many flavor layers.

Our beautiful blue sky gave way to high, thin clouds through the morning and then to lower, thicker clouds during the early afternoon.  By 2 PM the clouds to the west were dark as I drove to Lowe’s in Howell and the first, heavy rains came as I got to the parking lot.  I waited a few minutes and they stopped so I got into the store without getting wet.  I had the same good fortune on my way back to the car.  The sustained rains came later in the evening along with a tornado watch.  We went to bed before 10 AM but did not go to sleep.  It took me a long time to write this post and we kept a watchful eye on the weather radar.  Although thunderstorms were forecast as a certainty from 1 to 5 AM with the possibility that they might be severe, we finally turned the lights out around 12:45 AM and tried to get some sleep.