Another month has come and gone, so what things have I been up to?
On Building Diplexers
So, I started working on an amateur satellite duplexer. Due to the nature of the Icom W32a, it makes sense to do this. Suffice it to say, its been troublesome. My problems started like this:
- No SWR meter. Okay, order one.
- Testing with an antenna shows no appreciable change. Call success.
- Be paranoid! Check again! And … wait, what’s going on?
- The cable that I was using to get from PL259 to BNC was bad. Took a bit to figure it out.
- Decide that I need to check with a dummy load.
- Need a dummy load
- After going to 4 different stores find out that only one had a gallon paint can.
- Find out that I would need about $32 of mineral oil to fill
- Find a quart can at Menards
- Purchase $4 of oil to fill
- Get weird readings\behavior on SWR meter? Why does my power go up then drop?
- Why the feedback on 70cm?
- Wait, why the behaviour on a dummy load?
So, this must be a cable problem. I decided I needed to order new cables. They’ll be here Wednesday, but it will be Monday before I can test everything
I ordered all my cables from Air802. They’re quick and I’ve heard that they’re priced competitively. I can’t recommend them enough. They’re very willing to help you with finding exactly what you need. Another plus is that I get my order a day or two later, even with the cheapest shipping. After my trouble with the cheap crap I ordered from fleabay, the extra price is worth it.
Other then my issues with testing them, I have to say that Digikey did as well as they always do. I’ll have to do a full write up on the diplexer, but Lee (K0LEE) was very helpful in getting replacements for the inductors. I tried to find exact replacements and ended up giving up and contacting him for help. A prompt response later and I had the information I needed. If you build them your self (and build 2), expect to spend about $32 for each. If you’re inclined, this is quite a bit cheaper then Arrow’s list price. The paranoia in testing comes from having the Icom that I would hate to destroy.
Went on another fox hunt with the club. We changed up the technique quite a bit. I’ll be lazy and pretty much copy\paste my after action report on the event:
One thing I did think was effective was when Kris and I were using the arrow antenna/yagi to track it (the fox) in the truck with the antenna through the moon roof. I think if we had the time, and had I brought it, my handifinder would have been a good thing to deploy paired with a baofeng in the cemetery. Since we were about two blocks away, proceeding on foot would have made it easier to note the subtle changes. This make me excited to test this arrangement a member of the club purchased. I think it be an excellent replacement for the yagi-through-the-roof arrangement. I wish I had been able to get on the parking garage in town to get an initial bearing.
Normally I don’t talk about guns here on the blog. I love guns. I even have some of the scary black ones. Now, I could like to various jokes about them, liberals, or whatever. I’ve wanted to, and that’s why there are not ads on this blog. I feel that talking about firearms could easily be misconstrued as encouraging violence. Not a thing I want to have to explain. This blog will always be ad free as a result. (If you think I deserve a reward for wrting, the homepage has my amazon wish list.)
Being a gun lover though, I feel the need to talk about Orlando. The media (and the Democratic Side of Congress) is in outrage about the events, and demanding that law-abiding citizens submit to their demands despite the ineffectiveness of those demands where implemented (stateside with California, cityside with Chicago and more). While I’d love to be brief, Orlando doesn’t lend to brevity. Not out of laziness, but due to the succinctness of what I wrote, I will quote Core Concept Podcast.
At Core Concept Podcast, its no secret we strongly support the 2nd Amendment and the right to Concealed Carry. We do not agree with the opinion of the 9th Circuit Court of California(Commy-fornia if you must). The Constitution was written as a whole to guarantee the safety and freedom of every citizen of the United States. It was not written to guarantee the prosperity of its citizens, though as a whole it has created one of the most prosperous nations in the world.
The attacks in Orlando are terrifying. Its not about being a gay, lesbian, or straight person. Its about an individual mass murdering defenseless people. Regardless of your position (a split decision here on the podcast), these attacks were, and any imitation there of, are immoral and wrong. We both believe that all people can find reason and ways to live in peace with each other.
But we also believe that a person should be ready to defend themselves. That it is better to be a warrior in a garden then a gardener in a war. That personal security is the duty of each and every individual for them to secure for themselves. Even when relaxing, you must not let your situational awareness fail. To stay “left of bang.” When your awareness fails, you’re right of bang, and being right of bang means that people will die.
Our world is a dangerous place, full of evil people doing evil things. Regardless of your religion, orientation or race, life is always precious. As the days continue (and they will), let us all remember that. Let us guard ourselves and each other. Because those who walk the path of darkness will always look to spread it.
Expect gun posts in the coming months.
I am having feedback issues on my w32a wile workig the birds. Did you figyer out what was the cause?
The issue I had was the noise from the switching power supply getting into the transmitter.
I would recommend a handset and a set of good earbuds or headphones to make sure you aren’t getting audio from the speakers into the mic producing a feedback loop.