Mark Your Stuff: White Electrical Tape

Did you know they made electrical tape in white? It takes Sharpie like a boss and sticks to everything. So get a roll and start marking your stuff.

Get the best tape because it is only $6 and will last a long time. I use Scotch Vinyl Electrical Tape 35.

White tape 3M crop

Let’s mark some antennas, because all the rubber duckies look the same and they are all designed for different bands.

White tape antennas

Let’s mark my awesome insulated coffee container, a gift from my son.

White tape coffee crop

And let’s mark the very nice thermos I got at work.

White tape thermos

If you want to know the details about this tape, like being good to 105º C or having 10**6 megaohms resistance (that is a teraohm, right?), check the data sheet.

Also, if your Apple cords are getting frayed, this is a stylish way to fix them. So get some tape and mark your stuff.

Advertisements

23cm PC Board Yagi

I wanted a bit more “oomph” from my 1W 1.2 GHz HT, so I purchased a PC board Yagi to get another 6 dB.

I have a Yaesu FT-911 1.2 GHz HT. It is a 1990’s rig gifted me by the wife of a Silent Key at my work. It is a sweet handheld, but with limited power.

WA5VJB makes a variety of PC board antennas. The 1.2 GHz 3-element Yagi is $6, which was hard to resist. He also makes other nice microwave antennas: log-periodics, patch arrays, wheels, vivaldis, etc.

I went to HSC Electronic Supply and picked up a PC mount BNC and a right-angle BNC by navigating this aisle.

23cm yagi 2

I found a short, stiff BNC cable from this bin.

23cm yagi 3

I soldered on the BNC chassis connector and epoxied it to the antenna. The PC board is beat up because I’ve been carrying it around in my backpack for ARRL Field Day. It was pristine when I got it. Nice design, the feedline attaches at the edge of the board, then there is a stripline to the driven element. The reflector element is on the back side of the board. You can just barely see it in this photo. The shield of the coax attaches to a thru-hole pad that goes to the stripline on the other side of the board. That is hidden by the connector in this photo.

23cm yagi 1

And now I have a 1.2 GHz “flamethrower” HT.

23cm yagi 4

I need to find something to stiffen that bit of coax so I don’t have to use my hand to stabilize it. Other that than, pretty sweet.

Skillet Lasagna

Made this tonight and it was tasty. This is a simple one pot meal, just right for Cooking Merit Badge. Scouts will learn to dice an onion (not required for the merit badge, but an essential skill), sauté the onion (also not required and also essential), and brown meat (which is always tasty).

They should also learn a bit of “mise en place”, getting everything ready and in its place before starting. The recipe doesn’t make that clear, but a mentor (Merit Badge Counselor) should walk them through prepping the tomatoes and onion first, then getting the other ingredients ready while those are cooking.

Skillet Lasagna

Recipe for Skillet Lasagna.

The first time you stir this, you will probably wonder about using lasagna noodles. Next time, I might use a different pasta shape. Maybe rotini (corkscrew), penne (tubes), or farfalle (bowtie). Or I might go with lasagna again. That did work, despite the concern while stirring.

A bit more ricotta, basil, parmesan, or whatever is fine with me. I’m always good with more flavor or richness.

The recipe calls for a “meatloaf mix” of ground beef and pork. I bet that would be tasty, but we used 85/15 ground beef. 80/20 might be better, but you can always add a bit more olive oil.

Dicing an onion is one of the most basic skills in the kitchen. Doing it wrong is a good way to slice your finger. So watch this knife skill video from Kenji López-Alt and learn to do it quickly and safely.

Sautéing onions is not hard, but requires attention. A bit of oil, cook over medium high heat, stir occasionally (avoid burning), until the onions are translucent and tasty. Add more oil if the skillet is dry.

Cooking Merit Badge requires understanding frying, but sautéing isn’t quite the same thing. Frying is done at medium to medium high heat with plenty of oil and large pieces of food. The food is not moved around much so that it can cook through and brown. Like fried chicken. Sautéing is at higher heat, medium high to high, uses less oil, food is usually in smaller pieces, and stirred more often.

This article on Sautéing vs. Pan Frying is short and clear.

The recipe calls for minced fresh garlic, which is kind of a bother. We keep a jar of minced garlic in the fridge. It doesn’t taste quite as good, but it sure is easier.

Bon appétit!

Fresh Peas

A few weeks ago, I noticed fresh peas in the pod at our grocery store. I was about to buy some, but I wasn’t sure how much to buy. I’d always used frozen peas. Well, the conversion factor is roughly a pound of peas in the pod to a cup of shelled peas. This batch was generous, with two or more cups from 1.25 pounds.

Peas

Fresh peas are great, so “double the peas” is like doubling the bacon or the chocolate. Not a problem.

I used fresh peas in the pasta last night, and I’ll keep using them as long as they are available.

$7 Stove Windscreen

A kitchen splatter guard is just the right size for a backpacking stove windscreen. It costs $7 and weighs eleven ounces. A little heavy but a good choice for Boy Scout patrols.

It is tall enough to shield the flame of a canister-topper stove and big enough to leave room around the fuel tank so it won’t overheat.

Windscreen 1

A view from the top, showing the room for ventilation or bigger pots. Back in the 1970’s, my dad made a windscreen like this by bending some tabs on thin sheets of aluminum.

Windscreen 2

The one I bought is the Norpro Nonstick 3 Sided Splatter Guard. Each panel is 10 inches wide and 9 inches tall. The Amazon price varies. It cost $5.55 when I bought it. Similar splatter guards should be available at department stores or hardware stores that sell kitchen tools.

Windscreen 3

Speakers for my Elecraft KX3

Want speakers for your rig? No need to wait. For about the cost of a tank of gas, you could be sitting back and enjoying armchair copy.

The internal speaker in my KX3 is good but not great, plus the rig has stereo effects which you can’t hear through the single speaker. The headphone jack provides 100 mW per channel, which is not enough to drive speakers to a reasonable listening level.

This is my under $35 setup for an external audio amp and stereo speakers. Of course it would work for any other rig.

The KX3 has stereo output, so this is a 15 Watt per channel stereo amp that runs off 12 V, plus a pair of simple 3 inch speakers. The amp is mounted on top of one of the speakers with 2 inch wide velcro. The power lead has Anderson PowerPoles, so it plugs into the rest of my station power bus.

IMG 0221

Let’s walk through the parts list. You can choose your own speakers, of course. I was looking for some vintage Radio Shack Optimus Pro-X44AV speakers on eBay, but ran out of time before JOTA last October. I have one of those speakers on my Lowe HF-150 Europa.

The Pyle speakers are compact, inexpensive, and sound fine. I’m sure there are lots of other small speakers that work.

Item Cost
Pyle Home PCB3BK 3-Inch Cube Speakers, Pair 21.38
DROK Audio Amplifier (TDA7297 15W+15W) 8.50
Velcro 2″ by 4″ strips (optional) 2.77
Belkin Rockstar Headphone Splitter (optional) 10.99
Speaker/power wire had it
Anderson PowerPoles had it

The DROK stereo amp varies in price on Amazon, sometimes around $8, sometimes around $11. It is built around a TDA 7297 integrated amplifier. It works with a DC power supply from 6.5 V to 18 V, perfect for ham use. In small quantities, the IC is under $4. Add in the heat sink, board, pot, and connectors, and even $12 is a fair price. It is a pretty cute little amp, really.

A separate volume control for the speakers is handy. I can turn those up or down as I’m in, or not in, the “shack” (our bedroom).

The blue “power on” LED is very bright, so it is normally taped over with some black photo darkroom masking tape. I removed that for these photos.

stereo speakers and audio amp

I also use a headphone splitter so I can leave everything plugged in—my headphones (Yamaha CM500), the amp for the speakers, and the USB audio A/D device (not plugged in for this photo).

Belkin Rockstar Headphone Splitter

Here is the velcro that I used to mount the amp on top of a speaker. I have extra for other stuff that needs stuck down. The next candidate is my MFJ UTC clock. After that, who knows? I have plenty of velcro left.

two inch wide adhesive Velcro

Finally, here is the whole grand setup in the shack. Such as it is.

KX3 station with speakers