Thursday, November 08, 2007
Pulsing Amplifier Tuner
I made a trip to my local Radio Shack and was able to find all the parts I needed for this project. I have to admit that the circuit board I ended up with doesn't look as nice as the schematic, but the circuit works very nicely. Richard Measures was kind enough to publish the above seen schematic and notes. I increased the resistor value of R1 to increase the speed or frequency of the dits for more stable meter readings.
The idea behind the pulser is to use a rapid series of cw dits that are fast enough to keep the meter levels stable. I plug this into the electric-key jack on my 746pro, and while in cw mode, tune for max output. This circuit will save your tubes, and power supply, because it only uses 1/3 the grid current to tune your amp up.
73
Jim / KBØQYB
Sunday, October 21, 2007
Current Station
I've been away for a while, but now that the weather is getting cooler, I'll be adding entries as often as I can.
Since upgrading to General Class, I've made some upgrades to my equipment. I'm still loving my Icom 746 Pro, and have added a Heathkit SA-2060 tuner and an Ameritron AL-811 amplifier. I was fortunate enough to find the antenna tuner on Ebay at a real reasonable price. It's an oldie but a goodie and is built like a tank. Below is my main HF antenna, the all band doublet.
Since upgrading to General Class, I've made some upgrades to my equipment. I'm still loving my Icom 746 Pro, and have added a Heathkit SA-2060 tuner and an Ameritron AL-811 amplifier. I was fortunate enough to find the antenna tuner on Ebay at a real reasonable price. It's an oldie but a goodie and is built like a tank. Below is my main HF antenna, the all band doublet.
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