Archive for the ‘Uncategorized’ Category

HW-8 Audio Transformer

Posted: 28/05/2012 in Uncategorized

Well, long time no post. And I’m going to return my hiatus with possibly the simplest project I’ve ever actually written about.  At the W4MCT Swapfest this weekend, I purchased an old Heathkit HW-8 QRP rig. The first hurdle to overcome wass the audio output. The headphone output is high impedance while I only own low impedance headphones. Being impatient and not really wanting to wait on headphones to come in the mail, I rigged up an audio transformer to match the two together.

The schematic.

Like I said, simple as can be. And for the real world version,

Though, this is flipped from the schematic. That’s really it. I probably won’t use it too long, but if it works well, I may save my money. I still have to build an antenna for it. I’ll post that and an article on the radio its self before too long.

 

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N8VEM: Minor issues

Posted: 25/01/2010 in Uncategorized

Hey everyone, I know it’s been awhile since I posted any news. Blame it on school starting back. Anyway, since December,  I’ve made little progress on the N8VEM. The board is finished, and all the chips are in save two. This is because of a few problems I’ve had.

A) I ordered the 2.5MHZ Z-80 but a 4.0 Oscillator

B) One of my chips is the wrong logic family.

As soon as I get some money to order from jameco, and some time, I’ll make an order and get some more picutres up.

In the mean time, I’ve started another Z80 project, Elvira. This one is lacking most of the bells and whistles of the N8VEM, but it has blinkenlights. More info soon.

Still alive.

Posted: 30/11/2009 in Uncategorized

Just a quick apology for the lack of news. In theory the remaining parts are waiting for me at my house. I doubt I’ll get much done in the next few weeks due to finals. When Christmas hits, I’ll take a few days to solder the computer up and post lots of goodies. Hopefully I can get an actual VT-100 or a pocketterm before it’s ready.

Hello world!

Posted: 26/10/2009 in Uncategorized

Hello all!

This isn’t intended to be a “blog” in the usual sense. It’s mostly intended as a build log of my various projects as i go through out my life.

So, I’ll be updating as I go along.