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Top inside view.
Oscillator to the left rear, final in the middle, LPF on the right
and the KD1JV Simple Keyer Chip is inside the front lip of the Altoids.
Build Sheet. This is a building aide we used for the club build nights.
It has the schematic, component list, component diagrams, and Manhattan pad layout. All the info needed on one sheet of paper.
Output Waveform taken across a 50 ohm dummy load.
The scale is 5 volts per division, so this one's making about 1.6 watts.
Oscillator output waveform. Looks somewhat distorted, but the Low Pass Filter
cleaned it up nicely.
Keyed output waveform. I made no attempt to soften the leading and trailing edges,
so these are quite abrupt. Clicks were not discernable on received signals so I didnt incorporate
shaping components.
This is the Seiko oscillator chip. Easy to use if you like the frequencies available..
Here's the final. Its the ubiquitous 2N2222A with a heat sink. It's just a little warm even after 5 minutes key down into a dummy load.
KD1JV's LPF probably has a lot to do with that. The diode from the collector to ground is a 47 volt zener for SWR protection.
The Low Pass Filter I borrowed this from KD1JV's AP-80 circuit. It does the job nicely, I tried one from
the ARRL Handbook, and it worked well also. Steve's may match the final better, since the output is a little greater. His also incorporates an extra capacitor
across L2 to help notch out the 2nd harmonic..
Here's the KD1JV Simple Keyer Chip (SKC) mounted on a protoboard ready for installation in the Altoids.
These little boards for ICs were developed by WA0MWW and are now offerred by FAR Circuits.
Here's the keyer in the Altoids. Except for the board,
it's built ugly style. It performs well, is easy to use, and and inexpensive - all good ham radio characteristics.
I used this circuit to drive a piezo speaker. The SKC sidetone output is at 5 volts and this little driver
allowed 12 volts to be used. It's somewhat unusual in that the piezo is usually in series with the collector.
This configuration yielded a little more volume than the conventional method.
This is W0DGZ's finished rig. It was the John Wayne award winner for developing the most output
of any the ones built in the club. No one knows how he did it..
Rear panel of Bob's rig. Nice clean backside, doncha think?.
Here's WA0MWW's rig in an Altoids (what else?).
Inside view of MWW's. Nice clean layout. Ron's
a Manhattan Master, and all his projects show great craftsmanship..
This view of Ron's is looking forward from the hinge of the tin.
A good view of KD1JV's SKC keyer chip. It's a very easy installation,
and the keying action is very smooth and comfortable. Try it, I bet you'll like it, and its really cheep, err.. a good value.
This is KIØHV's fine little OARC-80 transceiver. He succesfully
converted an MRX-40 to an 80 meters. Then made it transceive with the OARC-80 trasmitter, adding qsk, muting, sidetone, and audio
filtering circuitry, then stuffed it into an old CB enclosure. Way to go Dale!!
Internal view of Dales' efforts. Note the labels.
Rear Panel. All in all, a nice clean package.
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Top inside view. Oscillator to the left rear, final in the middle, LPF on the right and the KD1JV Simple Keyer Chip is inside the front lip of the Altoids.
Build Sheet. This is a building aide we used for the club build nights. It has the schematic, component list, component diagrams, and Manhattan pad layout. All the info needed on one sheet of paper.
Output Waveform taken across a 50 ohm dummy load. The scale is 5 volts per division, so this one's making about 1.6 watts.
Oscillator output waveform. Looks somewhat distorted, but the Low Pass Filter cleaned it up nicely.
Keyed output waveform. I made no attempt to soften the leading and trailing edges, so these are quite abrupt. Clicks were not discernable on received signals so I didnt incorporate shaping components.
This is the Seiko oscillator chip. Easy to use if you like the frequencies available..
The Low Pass Filter I borrowed this from KD1JV's AP-80 circuit. It does the job nicely, I tried one from the ARRL Handbook, and it worked well also. Steve's may match the final better, since the output is a little greater. His also incorporates an extra capacitor across L2 to help notch out the 2nd harmonic..
Here's the KD1JV Simple Keyer Chip (SKC) mounted on a protoboard ready for installation in the Altoids. These little boards for ICs were developed by WA0MWW and are now offerred by FAR Circuits.
Here's the keyer in the Altoids. Except for the board, it's built ugly style. It performs well, is easy to use, and and inexpensive - all good ham radio characteristics.
I used this circuit to drive a piezo speaker. The SKC sidetone output is at 5 volts and this little driver allowed 12 volts to be used. It's somewhat unusual in that the piezo is usually in series with the collector. This configuration yielded a little more volume than the conventional method.
This is W0DGZ's finished rig. It was the John Wayne award winner for developing the most output of any the ones built in the club. No one knows how he did it..
Rear panel of Bob's rig. Nice clean backside, doncha think?.
Here's WA0MWW's rig in an Altoids (what else?).
Inside view of MWW's. Nice clean layout. Ron's a Manhattan Master, and all his projects show great craftsmanship..
This view of Ron's is looking forward from the hinge of the tin.
A good view of KD1JV's SKC keyer chip. It's a very easy installation, and the keying action is very smooth and comfortable. Try it, I bet you'll like it, and its really cheep, err.. a good value.
This is KIØHV's fine little OARC-80 transceiver. He succesfully converted an MRX-40 to an 80 meters. Then made it transceive with the OARC-80 trasmitter, adding qsk, muting, sidetone, and audio filtering circuitry, then stuffed it into an old CB enclosure. Way to go Dale!!
Internal view of Dales' efforts. Note the labels.
Rear Panel. All in all, a nice clean package.