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August Last revision Aug 4, 2020

Next Meeting Our meeting will be virtual on Tuesday August 11 at 7:30 PM and will feature the Doc Brinkley presentation. We will send out a Zoom invite to our membership so you can engage in this gathering. The currently scheduled presenter is now scheduled for Tuesday September 8th at 7:30 PM in Manhattan at Dole Hall on KSU Campus. Social distancing and CoVid Protocol will be observed, including masks when not eating. Did I mention our supper will be provided? Please RSVP to John Langer [box below] for a head count for the food prep. Our program will be given by John Shilberg, Director of Product Development and Technical Marketing for Scientific Utah. Among other things, they make routers for broadcast use. C U there!

 • October: Virtual KAB Streamed. • November: Could be an HVS sponsored event. Location TBD • December No Meeting.!

Emporia. If you missed the detailed write up last month, let me know and I will send you a copy of the July Newsletter via e-mail. The main feature was a show and tell of Robert's new 22 KW Generac backup power system that was installed in the Spring to protect the freezer with a good sized bundle of beef that Robert had stocked up. Rural power companies don't have the resources to respond to outages as quickly as the major power suppliers do, so his concern was well founded. As sometimes happens however, the control panel failed when Robert attempted to show it off. Fortunately, the Generac tech, Troy Shaw, who works for Western Electric in Emporia, and who sold Robert the unit, lived only about a mile away. He grabbed some gear and came over right away on his four wheeler. While there, he answered many questions about the generator and its transfer switch. Anyway, we got an impromtu program that evening, along with the usual picnic events we have. Our clay pigeon shoot was scaled back a it this year, but enjoyed by those participating.

The burgers and brots were enjoyed by all, along with the side dishes brought in, and were well spiced with conversation on various topics as we shared at the meal. On June 26, Kent Cornish (KAB) wrote: "This week we announced the cancellation of the in person KAB convention this October and replacing it with a virtual event. While we work on the logistics of making it easy for folks to engage with speakers, I wanted you to know we will have presentations for engineers. You just won't be able to sit next to one another and swap stories.

As we make our plans, Allison and I want to find out what topics are of interest to you this fall. We may have more options than usual so let's hear what's on your mind. Keeping in mind it will be watching through your computer, is there someone you've seen or a presentation you think is valuable to do your job?" Although we mentioned this briefly at our June SBE-3 meeting, it was not discussed fully. Please be thinking about what subjects would benefit you most to increase your knowledge and be ready to discuss them at the August meeting so we can recommend three or four items to Allison and Kent.

I have noticed several opportunities for educational webinars or white papers that have been offered during the CoVid-19 Pandemic. NewTek is offering a webinar with Certification on how to use its Tri-Caster. More of these type of lower cost units are being pressed into use (Robert Nelson's church, and others like it) during the restrictions on large assemblies enforced to reduce the spread of CoVid-19, forcing many churches to provide online worship for their members. I saw another white paper offering from Broadcast Bridge relating to studio design. They write: " ……IP and COTS infrastructure designs are giving us the opportunity to think about broadcast systems in an entirely different manner. Although broadcast engineers have been designing studio facilities to be flexible from the earliest days of television, the addition of IP and COTS takes this to a new level allowing us to continually reallocate infrastructure components to make the best use of expensive resource." There are enough terms new to me that I had to at least think about investigating further. Besides that additional certification can't hurt the resumé now can it?

Robert Nelson writes: Jones Audio supplied my church (First Congregational Church in Emporia) with a new VMix streaming system (similar to a Tricaster) that we're using for FB [FaceBook] Live services. I'd be happy to host a meeting in the future (hopefully with Ron in attendance) with the VMix and church AV system as the program. We can do it any time, so put it in the bag as a "fall-back" meeting program. Also, Robert has finished assembling "The History of Radio in Kansas (Doc Brinkley edition)" presentation which can be used for a virtual meeting in the future, if needed. Robert married an audio tape commentary and a slide show into a PowerPoint. Rod Hogg had been entrusted with the slides on Doc Brinkley in the Kansas history of radio. Stay safe out there guys. 30

Old News

You remember Robert Nelson's new Generac whole house backup generator? The 22 KW generator is modest in size for the power produced. The Kohler V2 engine is air cooled and runs on propane fuel, supplied from its own 500 gallon tank to the left of this picture. Perhaps we will learn the outcome of the failed control panel ………. Mmmm?

A note from KAB tells us that the KAB meeting in October at Wichita has been canceled, but there are virtual programs for engineers that can be scheduled. Brad Moses, KAB Chair, writes: "The KAB Board has decided to cancel the 2020 Convention, scheduled for October in Wichita, due to COVID-19 and replace it with an engaging and valuable online experience. After conducting our survey of members, talking with other state associations and in consultation with the hotel, it became obvious that holding an in-person conference was truly not feasible under the current conditions. The good news is we will still provide excellent speakers and presentations – but in a virtual setting so you can safely participate from your home or office. We are working on all those details, including an exciting station awards event to still honor the outstanding work by individuals over the past year." However, KAB needs to know your interests for those virtual programs. E-mail your preference of engineering topics to Allison@KAB.net, or to Kent@KAB, so the most pertinent programs can be obtained. Loss of the KAB Convention could be a big hit to them financially, so it is a generous offer they are making to us.

John Langer writes: "I thought this might be of some interest to (those) members that are still maintaining and operating C-Band receive only antennas. I received a call from Wesco yesterday and I did verify that this is legit. I believe only those that registered their Earth Station with the FCC are eligible for the planned upgrades. Most likely TI or notch filters and maybe an LNB change out (but unlikely) as they restrict the band to its upper frequency range (4.0- 4.2 GHz). Good or bad is yet to be determined but it does make me wonder if we truly need these services. Time will tell." See John's letter from Wesco.

I have used Terrestrial Notch Filters on satellite receivers before and they were quite effective. Programs were rescued from nearby AT&T tower sites that were still using the 4GHz band. Mostly they had to be used on sites that could not be cleared by Frequency Coordinators, so the sites could not be licensed. The 950-1450 notch filters did cause some loss of resolution or sometimes had other artifacts showing in the video, but for the most part they were effective. I never had to change out an LNB, but if one were available with better interference rejection or overload characteristics, it would have been cheaper than a C Band notch filter. Often, it was found easier and less expensive to move the antenna to a different site altogether to obtain a better satellite to terrestrial signal ratio and a consistently better overall picture. Hopefully, you all took time to register your C-Band sites with the FCC when you could do so. That way you won't be scrambling to find the cheapest way to get a fix, or have to explain to your G.M. why you need all this remedial stuff that wasn't budgeted. If you don't already have access to a spectrum analyzer, good luck!! I would suggest leasing one if you can't arrange for one from your corporate owners. It will pay off in time saved, allowing you to tune the rejection filter for optimum recovered signal.

I think most of you saw the notice from Allison at KAB about the IPAWS test for this year, but just in case you missed it, it will be repeated here There will be no national IPAWS test this year in the United States. FEMA said the next national test will be pushed to 2021 because of the impact that the COVID-19 emergency has had on broadcasters and cable TV. So, ………Radio stations won't have to fill out those ETRS forms this year. FEMA is required to test the system at least once every three years. If you need more information on this item, check an article in Radio World for more details on the matter, but this is the gist of it.

Officer nominees for SBE-3 Officers for 2021 are as follows:
Chair: John Langer, KSU
Vice Chair: Robert Nelson, KSU
Sec.Treas: Bob Locke, KPTS-Retired

The election will be in October, and would have been at KAB, but since that physical meeting is canceled, we will have to work something else out. Be watching!

Isn't digital TV marvelous? I just saw a commercial in which they used a flashback to some previous time by showing a TV scene with snow and electrical noise in the picture. I had forgotten how much time and effort was spent trying to find and eliminate the source of bands of electrical noise that would crawl up the picture, and if severe enough, would cause the TV to lose vertical lock when the noise band went through the vertical sync pulse. This was especially true on channels two and three. It was also in a time when station sync was established off of their own sync generator, which had some difficulty locking to a network or other signal. Ah yes, back in the days when their was no GPS which has become the universal sync reference. I had to wonder at that fact as well, when I saw studio pictures of cell phones playing a remote video clip of an incoming storm. Everything locked and played well together. One has to appreciate the present in the perspective of the "good old days"; but then that is called progress, isn't it?. 30

Newsletter Editor: R.W. Abraham

CPBE / CBNT Regional Engineer Cox Cable Wichita Retired


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