Pile

cd ~
wget somepackage.tar.gz
tar -gxf somepackage.tar.gz
man tar
tar -zxf somepackage.tar.gz
cd somepackage-1.23-45
less README
less INSTALL
ls
less INSTALL.DEBIAN
./autogen.sh
chmod u+x autogen.sh
./autogen.sh
./configure
apt-get install libtool
./configure
# grunt
make
apt-get install lib-dependency1824
make
apt-get install lib-dependency692
make
# wait 7 minutes
apt-get install lib-dependency324
lsb_release -a
# google lib-dependency324 on current OS
wget lib-324-1.02-backports-prebuilt.tgz
tar -zxf lib-324-1.02-backports-prebuilt.tgz
cd /usr/lib
cp ~/somepackage-1.23-45/lib-324.so.1.02 .
ln -s lib-324.so.1.02 lib-432.so
rm lib-432.so
ln -s lib-324.so.1.02 lib-324.so
cd -
make
# wait 20 minutes, ignore warnings
make test
apt-get install curl
make test
make install
# stab keyboard
sudo make install
cd ..
rm -rf ~ /somepackage-1.23-45
# panic
# yank power cord, join a commune

 

Portable Tree

My experiments with raising a portable antenna mast continued this weekend. Building on the lessons of my failed first attempt, I went back to the drawing board. After a few delays in getting out to the field (thanks to early winter sunsets and busy schedule), I finally achieved success in raising an effective 20 meter dipole 30 feet into the air at a nearby school park.

My primary concern in the redesign was finding a solid base for the mast. In my first attempt, I used a tent stake in the ground as my anchor point. As you recall, the mast broke free during a failed raise and I sprained my thumb.

Mast with swiveling pedestal base

This time, I followed a mast design that Lew Thompson (W5IFQ) built for TX Army MARS which has been used frequently during Field Day. I purchased a swiveling base from TMastCo. It’s made of composite (plastic) wood material and has anchor holes, four 12″ nails, and a swivel that fits the army surplus mast sections.

I used 8 aluminum sections for a mast of 30′ instead of the previously unwieldy 10 sections. The reduction of 7′ represents a negligible ERP loss according to Lew, so I went with it. Besides, 10 sections would’ve needed a second level of guys, so it’s far too much work for a temporary mast.

Guy rope anchor (dog leash peg) and Midshipman’s Knot (with bight)

Another challenge was to correctly calculate the length of the guy ropes and anchor locations so I can pre-tie the guys and raise the mast solo. I built a spreadsheet to calculate distances for the anchors and length of the guys varied by the number of mast sections in use. I factored in things like the length of the D-rings on the guy rope, the height of the base, dimensions of the anchor point, and the dimensions of the Mastrant sectional bracket at the apex of the mast.

3 ropes and D-rings attach to the apex bracket. Pulley is upper left. (image from previous attempt, for illustration)

This time, I nailed it. In the first raise attempt, with hard hat on my head, I successfully stood the mast up and was able to lean it against two of the guys while I pulled the third guy outward to attach it to its anchor.

Finally, a free-standing mast!

It took me about an hour from arrival to:

  1. survey the site for flatness, safety clearance, and soil stability
  2. drag out the gear from the car
  3. drive the 3 anchors and swivel base
  4. assemble the mast and attach the apex bracket, pulley, and vertical rope
  5. measure and tie the guy ropes — used an adjustable Midshipman’s Knot at the bottom and a static Bowline Knot at the top
  6. raise the mast and attach the 3rd guy
  7. adjust the guys to make the mast vertically plumb
  8. string out the dipole with 1:1 balun and RG58 feedline and raise it
  9. spread the dipole into inverted-V with friction knots on the anchors
  10. assemble the radio gear and call CQ
1:1 current balun, RG58 feedline with chokes, and 20m dipole, ready to raise

On a technical front, the 20m dipole that I’ve used successfully between trees had a significantly lower resonance due to the aluminum mast. It became too long. The most resonant point was 13.4MHz.

Frequency SWR Impedance
13.4 MHz 1.1:1 40 Ω
14.0 MHz 2.1:1 45 Ω
14.1 MHz 2.4:1 40 Ω
14.2 MHz 2.5:1 35 Ω
14.3 MHz 2.6:1 34 Ω

Just terrible. Thankfully I had an antenna tuner. If I had time, I would’ve shortened the dipole for tunerless operation. But at least it was able to hear lots of things very clearly, specifically a handful of the NCDXF propagation beacons in this hemisphere that I’d not heard before on any of my antennas.

Since it’s Christmas season, I did have a number of looky-loos in the school park coming by to ask what I was doing. From their point of view, it looked like I was raising a Christmas tree similar to what we have in Zilker Park (which is a moontower with a cone of lights). When I told them it was a ham radio tower, they were surprised and asked interesting questions. Glad for the opportunity to teach.

Rigrunner PDU, Yaesu FT-857 radio, MFJ-929 tuner

Unfortunately, the whole enterprise was a womp-womp moment. Despite all my preparations and the success of the raise, what critically stopped my ability to log any QSOs was the fact that my Yaesu FT-857 radio was failing to put out any appreciable power on SSB with the hand mic. Even with yelling into the mic on USB, all I could get was a paltry 9W, although my output was set to 100W. My CW key put out full power. But sideband voice with the hand mic was dead mute. No changes with mic or compressor level would fix it. I’ll have to debug it later. Womp. Womp.

Also, my 12V battery was undercharged, even though I charged it recently. So I kept getting beeps from my West Mountain RigRunner (which has an undervoltage warning) when I keyed down. My voice transmissions were also coupling with the RigRunner’s alert beeper and making shrill rattles on vocal peaks. Womp. Womp.

By then, the afternoon was growing long, the sun was coming out, the park was filling up with families and hyperactive kids enjoying holiday R&R, and I needed refreshments. It took about 40 minutes to take everything down and head back home.

Fly it high, hear the sky

Now that I’ve done most of the measurement and assembly, I can do it a little faster next time. The guy ropes are still marked with the correct length for 8 sections, I left the knots intact when I rolled up the ropes, and I left the apex bracket loosely assembled so I don’t have to mess with the bolts next time.

I now have a functional portable mast and I know how to use it. It’s just another tool in the toolbox; practice for when I’ll need it most. Future experiments may involve fiberglass sections, fan dipoles, delta loops, and vertical antennas with ground planes…once I get the radio to work right. Hi-Hi.

73 de KG5RHR.

They That Disrupt

Made a new acquaintance this week, some young person new to the cafe. Joined in our conversation at our table. Telling us about their hobbies and stuff they’re into. Great.

Another friend joined us after a few minutes, and in the spirit of good will, I sought to catch her up on our new friend. I said, “So, this is <name> and she’s into art and–” And then immediately our new friend busted in and told us that she identifies with the “they” and “them” pronouns. Fine. Whatever. Story disrupted by protocol.

I remember being a highly-principled kid. Every other month, I tried to redefine myself. I had my blessed golden rules, and by God I stood by them, no matter what the cost.

The depth of my fervor for the cause had no bottom. But I kept pushing for it, to be that thorn in everybody’s side until all Truth was out, until all lies were exposed, until everything was brought to glory light. Even if it meant disrupting the flow of a normal event and making a scene.

Witness this case: during an evening of movie-watching at a friend’s apartment in college, in the darkest of my Bible-thumping nights, with a room full of friends and acquaintances sitting in the light of a flickering screen, I set myself to task to emit a small sub-audible whistle every time I heard profanity in the movie. I don’t remember what we watched, but with every fucking (wheet) little blue word in the damned (wheet) dialog, I just made this shitty (wheet) little sound, and instantly I placed my own principles directly in front of the desire of everyone in the room to enjoy a piece of fiction in a communal setting.

I was that kind of asshole.

So I get it. “She” is actually “they” and “them”. Fine. I’m actually an advocate for people who redefine their sexual identity. But this news was put to me with bad timing. If they had let me know at a better time, with better lead-up and a dialog about what it is they’re trying to do, then yeah, it would’ve gone better. But they simply lost all points for style.

I wish them the best.

Insufferable Siblings

J.D. Salinger’s “Franny & Zooey” is a pair of tales about a handful of abominable people. I trudged through the reading and tried to understand, to sympathize, but these characters are just terrible, vapid people. Franny was an effete waif constantly wasting away her life in passive despair. Zooey was her overconfident asshole of a brother. Franny’s ivy league boyfriend was as shallow and meaningless as his school’s ball game. Their mother was a browbeaten scab who doused her flame when the winds of conflict tried to snuff it out. All lived in the upper crust; all in the northeastern elite; all in the ivy league of well-to-do families. Ultimately unrelatable.

I tried to like the book. Honestly, I tried.

But Salinger made these characters too real, too human in their portrayal. I had no choice but to dislike them.

At the end, you find the two eponymous characters have a single humane moment. A bit of subterfuge, and touch of disbelief, and you get down to a pair of siblings who finally make an emotional connection after 300 pages.

So maybe that was Salinger’s genius. He wrote a book where you just could not root for anyone, and could only gave a damn after rumination. I picked this up to read twice because it was so forgettable that I forgot I had already read it before I nabbed a printed copy. It’s worth reading, I guess, but only if you like terrible people and want to observe how to make them look like humans.

Any Friend of My Friend Is a Stranger

Facebook friend recommendations of strangers by mutual friends count:

1: friend of that guy who befriends a lot of pretty girls
2-5: 2nd-order association of my gang; doesn’t hang out at the cafe when I do
6-12: goes to Burning Man/Burning Flipside
13-18: really popular at Burning Man and is an artist or performer or something
19+: there’s a damn good reason why I’m not a friend of this person