It was brisk when we got up this morning, with the temperature in the upper 40’s (F), light breezes, lower humidity, and clear, blue skies.  When the weather in Michigan is at its best it is near perfect.

After our usual coffee and granola we spent a little time browsing Amazon.com looking at their “Prime Wednesday” sale.  Neither of us are compulsive shoppers or impulse buyers and scrolling through thousands of items on a slow Internet connection looking for something we can’t live without at a price we can’t pass up is not our idea of fun.  I have things I need to order, like the multiple monitor mounting system for the ham shack, but it quickly became obvious that I was not going to find those items for sale as part of Amazon’s special July 15 Prime Sale.

Mara was up and took her garbage to our trash to can and returned to her rig.  Linda then took our garbage out and moved the can to the street.  By 10:30 AM Mara had not yet emerged from her rig, so I went to my basement office and resumed work on the custom desk design for our bus.  I still need to design the pull-out pantry but I finally ordered the Fulterer top/bottom slide mount from Rockler and had it shipped directly to Jarel in Logansport, Indiana.  It is a serious piece of hardware that will support 450 pounds, so it should be more than adequate for the task.

Mara eventually emerged from her rig and the ladies left for 12 Oaks Mall and Mara’s first ever appointment with Renee in the J. C. Penney’s Salon.  They were gone quite a while, tacking on several stops at pet and food stores before returning home.

I received a second quote for a wall-mounted monitor mounting system from AFC Industries.  It included itemized pricing and an offer of a 15% discount but was still way too expensive.  Though more expensive than a desk-mounted pole system I decided I to order the ZioTek wall-mounted monitor mounting system from CyberGuys.  Being wall-mounted it will get my monitors completely off the desks, leaving room for ham radio equipment to slide underneath and all the way to the back edge of the desk (and beyond).  It will also isolate the monitors from the desk so they won’t move if the desks are bumped.  Another bonus is that I can move the desks to get to the cables at the back of the radios without having to move the monitors.

The monitor mounting system is a significant purchase so I wanted to make sure the components would work the way I need them to.  I measured the three monitors that will initially be mounted using the system and then made a scale drawing to see how they would fit.  I added all of the items to the shopping cart and was getting ready to complete the purchase when I noticed that a 5% discount was available if I joined their e-mail club.  I signed up, received an e-mail, and confirmed my intention to join but the 5% discount did not show up in my shopping cart.  I called the 800 number and was told it would take 24 hours for the discount to be available so I cleared all of the items out of the cart and will re-enter them tomorrow.

I finally settled in to my design work but took several breaks to talk to friends on the Novi and South Lyon repeaters.  The Morgan Manufacturing VHF/UHF lightning arrestor was once again degrading my signal to an unusable level/quality so I once again disconnected the antenna and radio coax and joined them together with an N-female to N-female barrel adapter.  Once I did that I was able to transmit and receive to/from both repeaters full-quieting.

I exchanged a couple of e-mail updates with Jarel Beatty, the cabinet maker in Logansport, and finally quit working around 5 PM.  I came upstairs and found that the weBoost cellular booster systems had arrived from Amazon so I unpacked the shipping box and opened them.  I had not realized when we ordered them that they were designed for use in a car with an inside antenna that requires the phone or other cellular device to be 18 – 36 inches away.  That is not very far and it is a fairly small range.  As the name implies, however, it is designed for use while in motion which is what both we and Mara need/want.  I decided to temporarily install one of them in Linda’s car to test it.

Sitting in the driveway in a relatively bad location my phone was in 3G mode with a weak, but usable, signal that hovered around -115 to -118 dBm.  With the booster turned on my phone switched to 4G-LTE and the signal strength improved to anywhere between -103 to -94 dBm.  (The less negative the signal strength in dBm the stronger the signal.)  That may not appear impressive on the surface, and it was certainly not the 50 dBm gain that is claimed for this device, but it was actually a significant improvement.

“dB” is the abbreviation for “decibels” which is a logarithmic scale.  Logarithmic scales are useful for representing quantities that vary over a large range, like cellular signal strengths.  A change of 3 dB represents a factor of two, i.e., a doubling or halving of the quantity.  Thus a change from -118 dBm to -115 dBm (decibels to a millivolt) represents a doubling of the received power.  It is still a weak signal, but it is twice as strong.  Going from -118 to -103 is a change of +15 dBm and is five doublings (-118 to -115 to -112 to -109 to -106 to -103) which is an increase of 2x2x2x2x2 = 32 times.  Continuing from -103 to -94 is another +9 dB change representing three more doublings (-103 to -100 to -97 to -94) for a total gain of 32x2x2x2 = 32×8 = 256 times.  Starting from a signal in the -118 to -127 dBm range that is potentially the difference between useable and not useable.  (BTW:  a change of 10 dB is a factor of 10, so going from -115 dBm to -105 dBm and then to -95 dBm represents an increase of 100 times.)

We had decided at dinner last night that we wanted to go to The Blue Nile restaurant while Mara was here.  The best time to go turned out to be this evening, so Linda made an online reservation for 7:30 PM at the Ann Arbor location (there is also one in Ferndale).  We tested the weBoost Drive 4G-X cellular booster on the drive to/from Ann Arbor and it definitely made a difference in the signal strength we saw on our phones.

It wasn’t until we got part way down Main Street that we realized that today was the opening day of the Ann Arbor Art Fair.  The last place I wanted to be driving, parking, or walking was at the Ann Arbor Art Fair, not because I dislike art (we love art), and not because I dislike art fairs, but because I dislike congested traffic and crowds, which the AAAF has in abundance.  Surprisingly, we were able to park in one of the parking structures a couple of blocks from the restaurant.  After fighting our way through the pedestrian traffic I was even more surprised to find the restaurant essentially empty.  The Blue Nile is slightly outside the portion of Main Street where the AAAF takes place and streets to either side that are closed off to vehicles during the AAAF.  All of the restaurants and the beer/burger joints in and around the AAAF venue were doing a brisk business, especially if they had outside seating (it was a very pleasant evening), but the restaurant was open and the host was very gracious.

The Blue Nile serves Ethiopian cuisine.  Some of the tables are upside down rope baskets with four chairs and two side tables.  We always ask to be seated at one of these because we always order the Vegetarian Feast which is, in fact, vegan.  The Feast comes on a large round tray covered with a layer of Ethiopian sponge bread (made from teff flour) with small piles of the seven different vegetable-based dishes on the menu surrounding a pile of (optional) salad in the center.  Beverages and platters of rolled up sponge bread are placed on the two side tables (we had water and Ethiopian spiced tea).  The meal is eaten by tearing off suitable sized pieces of sponge bread and picking up the eight different selections from the tray.  Before the food was brought to the table we were given hot, moist towels to wash our hands.  Nice touch.

The food was amazing and the experience somewhat more communal than sitting at a standard American table and eating with utensils.  The waitstaff was gracious and attentive and it was a wonderful experience for all three of us.  Mara asked one of the waitstaff to take a picture of the three of us, which they gladly did.  She then uploaded it to her Facebook page along with a brief description of her visit and meal.  One the drive home she already had 12 “likes.”  This is the side of Facebook, and other social media, that is fun.

It was getting dark by the time we got back to the house but we took the time to unload Mara’s kayak from its special mount on the rear of her motorhome that is installed in the tow receiver.  The kayak mounts diagonally from the lower driver side up past the roof on the passenger side and the tip is about 13′ 2″ above the ground.  She was leaving at 6:30 AM the next morning to drive to Cummins Bridgeway to have her main engine and genset serviced and would be traveling south on Hacker Road to Grand River Avenue.  The last time we did this we clipped a branch in the southbound lane on Hacker just north of Bendix Drive not far from Grand River Avenue.  I was concerned that she would catch the same branch and damage her kayak which is why we took it off the rig.

Once the kayak was off the back of her rig and sitting in our yard we said a quick “good night” and all trundled off to bed as 6 AM would come all too soon.  I wrote for a while in bed but was too tired, and full of food, to stay awake.