Avoid Ace Hardware Part 30810

Published at 18:01 on 25 October 2011

It’s a coaxial grounding block of the type cable TV companies use at service entrances.

Well, actually it’s not: the ones the cable companies use are made by reputable companies and work properly. This one is made by some anonymous factory in China and fails to grip the center conductor of the coax properly, causing intermittent connections.

This is something I wasted about two hours on this afternoon (I blamed myself for failing to install the F connectors on the coax properly at first, and only gave up on this theory after the connection was still intermittent even after my third such attempt).

Eventually, such repeated failures, combined with the fact that I’m no novice on installing RF connectors on coax, and combined with how the item was discounted as a discontinued item (no returns accepted) made me suspect the guilty party. Apparently, I am not the first to have trouble with this item, and the store doubtless got tired of the endless string of returns on it and decided to discontinue stocking the part.

Thankfully, I seem to have resolved the issue without an extra trip to the hardware store for a properly-made grounding block. (I shimmed the faulty center terminal with some bits of thin copper wire.) But it’s a lesson that sometimes what appears to be a good deal (I was pleased at the price discount) is too good to be true.

Doty Antenna Update

Published at 14:46 on 25 October 2011

Well, it’s basically all finished (except for putting some tools away), and I must unfortunately report that the remaining work I did today accomplished only a modest improvement in the antenna’s performance. There does appear to be less influence on reception from indoor noise sources, but it also appears that the source that makes the noise floor below about 11 MHz so high is elsewhere in the neighborhood. That said, the improvement at 11 MHz and above is nothing short of astounding.

I do have two notes to add to the instructions John Doty wrote nearly two decades ago:

  1. Weatherproof metal project enclosures (“miniboxes”) are not so easy to find locally, and many of the mail-order sources for them have onerous minimum orders. My solution was to purchase a metal, outdoor-grade electrical box, spare plug (they all tend to come with three holes, and plugs for two), and cover plate and use that for an enclosure. Because one of the holes is on top of the box, I used a liberal amount of Coax-Seal inside the box to help ensure moisture cannot enter. I put all connections on the bottom of the box to minimize the chance of water ingress.
  2. The 300:75 ohm TV matching transformer I took apart had a ridiculously small ferrite core in it. Even if I used the recommended 40-guage enameled wire (which is annoying to use because it breaks so easily), I see no way I could ever get a total of 40 windings around it. I ordered a ferrite toroid (Core F-50, Ferrite Mix 61) from Palomar Engineers (they have no minimum order and shipped my order very promptly) and used that. Instead of 40-guage wire, I just bought the set of 3 spools of magnet wire that Radio Shack sells, and used the medium size for the 10-loop winding and the smallest size for the 30-loop one.

The Doty Antenna Really Works!

Published at 09:31 on 25 October 2011

I have thought about constructing the shortwave receiving antenna described here for many years, but never got around to it (until now) because it always sounded like an awful lot of work.

Well, it is an awful lot of work. At least several times as much work to build as any other shortwave receiving antenna I have ever erected. Not to mention a fair chunk of change — I’d estimate I’m out about $200 in materials cost for the thing.

But my preliminary tests — done even before all the noise-suppressing features have been completed — indicate that the thing really works. In addition to being by far the most difficult and expensive shortwave antenna I’ve ever had to deal with, it is also clearly the best.

I am copying Shannon VOLMET on 13264 kHz as I type this entry on my computer in an urban Seattle neighborhood. This is a low-powered signal which must take an unfavorable (i.e. polar) propagation path to reach me, and I had extreme difficulty receiving it even twenty years ago when RF noise levels were much less than they tend to be today. Yet I tuned it in this morning on my first attempt with my incomplete Doty antenna.

Currently, the biggest fault of the thing is that I am still getting a lot of RF noise below 11 MHz. I’m hoping that’s merely a result of my not having buried most of the cable run between me and the antenna base yet (only about 1m of the cable is buried right now). At 11 MHz and above, the signals are unbelievably quiet for an urban location. They’re not at rural standards, mind you, but I am able to copy an S1 to S2 signal from Ireland, which to reiterate is pretty darn good indeed.

Hopefully I’ll be reporting further improvements tonight when the antenna is completed.

More North Korean Radio

Published at 23:16 on 23 October 2011

Here. Hopefully the upcoming new antenna will fix some of the interference issues; then again, it is nothing short of remarkable that I can hear signals at all in an urban location.

Radio from an Alternate Reality Zone

Published at 19:44 on 22 October 2011

Finally got around to recording another complete broadcast of Voice of Korea this evening. Yes, it’s in English (albeit accented and with muddy audio), in case you haven’t listened to my prior recordings of this broadcaster.

Actually, I’ve made some other recordings as well, but most of them got walked on by the dimmer switch in my housemate’s torchiere lamp. As of this week, that device’s propensity to spew unwanted RF has been muzzled with a ferrite bead on its power cord. Add that to the new antenna I am working on, and hopefully I will be able to make more such recordings from the comfort of home.

Anarchists Did Not Kill Anyone in Greece

Published at 14:48 on 20 October 2011

Figured I’d post this here because there’s a high change the right wing echo chamber (or possibly even the establishment liberal echo chamber) is going to start endlessly repeating otherwise.

Here’s an excerpt from a report from Greece itself (by an English-language newspaper that is not tied to either side that clashed):

One man has died in hospital after [note the wording here: after, not because of] violent clashes between communists and anarchists marred the second day of a massive 48-hour strike, ahead of this evening’s parliamentary vote on a raft of new austerity measures.

Dimitris Kotsaridis, a 53-year-old construction worker and trade unionist, died of heart failure at Evangelismos hospital on Thursday afternoon.

According to sources, Kotsaridis was a member of the Communist Party-backed union, the All-Workers Militant Front (Pame). He came from the Athens suburb of Vyronas and was one of around 50 injured people who were taken to Evangelismos hospital this afternoon. He was unemployed, married with two children.

A hospital statement said that Kotsaridis was transported by ambulance from the Zappeio mansion to hospital at 4.45pm. One man has died in hospital after violent clashes between communists and anarchists marred the second day of a massive 48-hour strike, ahead of this evening’s parliamentary vote on a raft of new austerity measures.

Dimitris Kotsaridis, a 53-year-old construction worker and trade unionist, died of heart failure at Evangelismos hospital on Thursday afternoon.

According to sources, Kotsaridis was a member of the Communist Party-backed union, the All-Workers Militant Front (Pame). He came from the Athens suburb of Vyronas and was one of around 50 injured people who were taken to Evangelismos hospital this afternoon. He was unemployed, married with two children.

A hospital statement said that Kotsaridis was transported by ambulance from the Zappeio mansion to hospital at 4.45pm. He had no injuries and no pulse. Medical staff unsuccessfully tried to resuscitate him for 50 minutes before pronouncing him dead.

[All boldface emphasis added by yours truly.]

So there you have it. The official statement, from the hospital that treated him, says that guy who died after the riots today died as the result of heart failure, not as the result of any injuries received (of which he had none).

I-1125: More Eyman Garbage

Published at 09:18 on 20 October 2011

I was actually for a moment inclined to vote for the thing, because it bans red-light cameras, which are one of the many tentacles of the emerging total surveillance society. Alas, it is cluttered up with two other unrelated provisions related to tolls and gas taxes. So forget it.

And this is not just my personal pet peeve here. Article II Section 19 of the Washington State Constitution says that all bills (and an initiative to the people counts as a bill) must address only a single subject. So the initiative is yet another piece of legal garbage from Tim Eyman which will end up in court if it passes.

Report from Occupy Seattle

Published at 10:32 on 15 October 2011

I got down to Westlake Park last evening to see what was going on at Occupy Seattle. Not terribly much, initially (there were several dozens of people around, many with signs, but not much was happening), so I went to find something for dinner.

When I got back from my meal, the evening “General Assembly” was in full swing. In general, it was pretty impressive. From what I could tell, anyone was free to join in and participate in its decisions, and there seemed to be a pretty strong effort to prevent a leadership and power hierarchy from arising. A fair amount of the meeting seemed to be focused on dealing with the problem of people autonomously going off and trying to speak for the Occupy Seattle movement in general, even though no Assembly had ever agreed to give them such power.

Some of the discussion related to the thing the Establishment media keeps talking about, the demands of occupiers. It’s clear from visiting the Occupy Seattle web site (link: http://occupyseattle.org/demands) that no such firm list of demands has yet been decided and agreed upon.

Which is not necessarily a bad thing. The most powerful thing that is happening right now is that a bunch of people, many of whom don’t really have any background in activism, are acquiring one. And they’re using techniques which are decidedly non-authoritarian to organize themselves.

Those techniques are somewhat different from what many of the current crop of self-identified anarchists use. This has caused a measure of dismissiveness amongst some of my comrades about it. Which is not to say they never have a point — there is a measure of bourgeois naïveté to be found, as well as (particularly amongst some older folk there) plain old pro-Establishment bias.

However, that’s no reason to write the whole movement off. Expecting people to become committed anarchists within moments of their first exposure to anarchist propaganda is itself a naïve attitude, as well as an authoritarian one that devalues the other’s own judgement and experiences. It typically takes time to make a significant shift in one’s weltanschauung; wanting people to quickly agree with you is tantamount to a desire for them to outwardly cave to your reasoning (probably because you have brow-beaten them) while still doubting it inside. I’m optimistic that the Occupy movement is going to end up being a enlightening (and therefore, radicalizing) process for many if not most of its participants.

For one, whether its participants realize it or not, it is already a fundamentally radical movement, since it is denying the Establishment’s legitimacy to pronounce rules about camping and traffic. In the eyes of the law, the cops are actually in the right when they have used force against Occupy movements, since such events at the least are camping in parks the law says are for day use only, and often embark on unpermitted marches in the streets in violation of the traffic code.

(Digression: Yes, that means the Egyptian government was in fact legally entitled to try and forcibly break up the occupation of Tarhir Square. The landscaped area around the Square was a park, not a campground, so erecting tents and staying there overnight was in fact illegal, as was blocking traffic in what is a major Cairo intersection. That latter act was making Cairo’s already legendarily bad traffic even worse. Which in turn shows how much the domestic right-wing “law and order” crowd shares with unsavory thugs like Mubarak.)

In that, it’s rather a brilliant strategy, since it is leading the Establishment to act like jack-booted thugs when faced with a bunch of nonviolent people assembling and trying to hash out what to do as a result of the growing economic and social inequality in society. If they don’t do that, then the Establishment ends up caving to those who are directly challenging its authority, and Establishments absolutely hate to do that.

And when the Establishment acts like jack-booted thugs when faced with a nonviolent group of concerned young people, many of those concerned young people will end up being lessoned by the School of Hard Knocks that the stuff us radicals keep saying about the Establishment actually has validity.

The Assassination Plot is Fishy

Published at 12:59 on 14 October 2011

You don’t have to be a conspiracy kook to think so; there are plenty of good reasons to suspect it.

And in regard to it possibly being the work of an extremist cell within the Quds force, I must observe that it is equally likely to be a false flag operation from an extremist cell within the US intelligence community.

Military Stupidity

Published at 11:34 on 13 October 2011

The warning message at the bottom of this page has got to be one of the stupidest things I have read on the web in a very long time.

Really, now: it’s on a publicly-accessible web server. One that hasn’t even bothered to use robots.txt to exclude itself from search engines (I found it via a Google search, while looking for information on shortwave frequencies).

If the Ninth Signal Command is putting sensitive information on that server, they are seriously derelict in their duty to protect such information against unauthorized access. I wasn’t even trying to find sensitive military information. If I could find some without even trying (in the comfort of my own home!), then what about all the spies in the world, who are continually trying to find it, because it’s their job to do that?

If they’re not putting sensitive information there, then why put that warning on their pages?