Monthly Archives: May 2020

How a simple technology can help stop COVID-19…

Warning:  This is a quick rant combined with a lesson on troubleshooting.

No, this post is not about some quack fix like drinking Clorox or Lysol — the simple technology is MASKS! But in order to work, EVERYONE must use them. The generic masks are not meant to protect YOU — they are meant to protect YOUR NEIGHBOR.

A recent model predicted that if 80% wore masks that were 60% effective, the COVID Ro parameter would drop below 1, which means the spread is no longer exponentially increasing, but actually exponentially decreasing!

Or as we say in the engineering world, the response is now over-damped. The model further predicts that with a 14 day incubation period, within 28 days new cases would be WAY down.

Models are nice, but what about the real world? Well, we have solid data there. Both Hong Kong and Taiwan are religious about masks. They acted quickly, and have almost 100% mask compliance. As a result, Hong Kong (population 7.5 million) has had 4 deaths, and Taiwan (population 23.8 million) has had 6. And businesses and schools are open.

At these rates the US would have between 100 and 200 deaths, not closing in on 100,000!

Of course, this is not new technology. In the 1918 pandemic (the one that killed my grandmother) masks were mandatory in many cities. Those that enforced mask wearing had much lower death rates. While they did not have the benefits of modern science back then, they did have the benefits of common sense. Something that seems be badly lacking today.

Why the resistance to masks, anyway? Like so much in our society today, it has been politicized. Polls show the “Blues” are much more likely to wear masks than the “Reds.” The difference being, the Blues are concerned about their neighbors, while too many Reds are concerned only about themselves. (If I stepped on toes, get over it & start wearing a mask.)

A quick question for those who want to “assert their constitutional rights.” I would ask “So show me where it says in the constitution that you have a right to infect others.” Self-centered, indeed.

Now, some consulting engineering thoughts — specifically on troubleshooting. For the last 30+ years, my late business partner and I worked to “identify, fix, and prevent” Electromagnetic Interference (EMI) problems in electronic systems. Much of our time was spent troubleshooting while trying to better understand the problems at hand.

Like small town doctors who identified illnesses, fixed broken arms, and prevented disease through shots and vaccines. It was gratifying work, and surprisingly lucrative.

As a first step in identifying (diagnosing) a problem, we used a simple model of “Source – Path -Victim.”  All three elements are needed for an interference problem, but only one needs to be eliminated or controlled.  So which one is the best?

The source, of course. One does that through suppression (for COVID, coughing in your elbow or straying at home when sick,) or containment (such as a mask.)  In the EMI world, the containment is often a simple metal shield, which when properly applied is often cheap and very effective.

The containment need not be perfect — even reducing the unwanted EMI emissions (spread) by a factor of 2 (aka 6 dB for you geeks) is sometimes enough. But with just a little care, achieving 1000x (60 dB) to 1,000,000 (120 dB) reductions are economically doable. When everyone wears masks, the COVID source reduction is believed to be at least 100x (40 dB).

For you non-geeks, the deciBels (dB) are exponential, just like the unchecked spread of the COVID. Scary, huh?

If controlling the problem at the source is not possible, then we move on attacking the “path.” For COVID, this is either through the air, or through contact with infected surfaces. Solutions include (once again) masks and sanitation/hand-washing.

The last method is protecting the “victim.” Because the potential victims can well outnumber the sources, this can get complex and expensive — think ventilators and ICUs. Thus, drastic measures like shutting down businesses and stay at home orders.

We often needed all three for solving EMI problems —  but the source suppression was and still is far and away the most effective when it can be applied. Works for COVID too.

That concludes today’s rant/consulting engineering lecture.  Now — START WEARING A MASK — to PROTECT THOSE AROUND YOU — and to HELL with self-centered politics!

Stay healthy everyone!

Uncle Daryl

P.S. Enough with the rants for a while.  Next up will be a couple of posts where I share some ideas with those not yet consultants, but harboring the “itch.”  We will start with the mailbag. Stay tuned…


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Handling Sudden Declines in Business…

With the COVID pandemic, many businesses have seen drastic reductions in revenues. This includes consulting firms.

So what do you do? Don’t panic. OK, maybe for a moment or so, but then put on your consulting thinking cap, and start figuring out some alternate plans. After all, that is what we do as consultants — solve problems — and usually difficult ones that clients can’t or won’t handle themselves.

A good first step is to take stock of your finances. How long can you go at your present burn rate with little or no income? What expenses can your trim or eliminate? Are there other sources you can tap –  either savings or alternate income?

The next step is to take a hard look at both current and past sources of consulting income. Are there potential areas you have not pursued that might provide income?

Is it time to pivot?

I’ve long used a model dubbed “ACT”, for “Aware – Critique – Try.” Not sure where I learned it, but it was many years ago. It has served me well throughout my career.

–Aware — Time for creative ideas. Brainstorm — create mind maps — make lists — what ever it takes to get the juices flowing. Don’t hold back — at this stage, nothing is too far out or too impractical. 

–Critique — Next, sort through your ideas and pick a couple (not more three) to develop further. Start with some preliminary plans. List some objectives. But don’t overcomplicate things — keep it simple. You can refine things later.

–Try – This is where most people fail, due to fear and/or procrastination. But if your business is sinking, this is no time to crawl into a hole and hide. Or spend valuable time on things that don’t matter. The house is on fire — grab a hose or bucket — now!

Here is a real world example. The year is 1992. After five years in business, we finally felt like we arrived. Business flowed in with regularity — until it stopped — dead. While normally each billing about 80 hours/month, as I recall we billed about 24 hours — total — for the two of us in the entire fourth quarter. Ouch — ouch –ouch!!!

What happened, we wondered? Had the parade gone in a different direction? Where was everybody, anyway? And what are we going to do?

A little background. We had been riding two waves — EMI (Electromagnetic Interference) in personal computers, and in defense. We had two major clients that provided well over half our business. When the PCs and defense suddenly dried up, so did the business from our two big clients, along with others. Too few eggs in two few baskets.

So we looked at where any other business had come from. Nothing major, but medical devices stood out. At the time, we both lived in Minneapolis/St. Paul, a medical hub often dubbed “Medical Alley.”  A bunch of our past business was literally right in our back yard.

We noted this was a market not well served. Using simple electronics, it was not seen as glamorous as PCs or defense. It is also highly regulated, which scared others away.  Aha — a “barrier to entry” if we could crack it. 

Based on these observations, we put together a simple three part plan:

Offered to write a simple column for a leading medical device magazine. Having written for a number of other magazines, we had the skills and credibility to deliver. The magazine jumped at our offer, and thus began a fortuitous long term relationship. 

Joined an industry committee on medical devices. We approached this with care, as committees can suck a lot of time, and there were only two of us. But that worked too.

Enhanced personal contacts in the FDA. We had already worked with FDA engineers, so that was simple. Plus, we truly enjoyed working with them as fellow professionals. 

Six moths later, we were back in business and recognized as EMI experts in the medical industry. We knew we had succeeded when an FDA engineer responded to a question about who to contact, he said in jest, “Dial 1-800-KIMMEL GERKE.” 

As an aside, not long after we got a real 800 number — 888-EMI-GURU. It has served us well. It also became our trademark and web address (www.emiguru.com.)

We did not stop there. We continued to burnish our reputation by writing a book, and with this fun little project. But our quick “three part plan” probably saved the business at a critical time.

The medical “pivot” became a model for expansion into other markets. We ultimately ended up with a portfolio of industries we served — computers, defense, medical, industrial controls, vehicles, facilities, and more. Some were even niches within niches, like nuclear power plants or farm machinery. 

As the old saying goes, “When life gives you lemons, make lemonade.” Or another old saying,”When the going gets tough, the tough gets going.”  We continued on for the next 23 years until my business partner passed away in 2015. But even now, I stay involved in semi-retirement at a level that suites me fine.

Good luck, and stay safe during this trying time —Uncle Daryl


It was five years ago last week I lost my good friend and business partner to cancer. I still miss drinking beer with him where we tried to solve the world’s problems.

So I offer this video in Bill’s memory. If you are a beer drinker, please join me in a toast. You can read his eulogy here.  RIP Bill Kimmel.


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