Ham Radio . Magnum Experimentum
Antennas, experiments, engineering and other articles of interest to radio folks.
This year our club ran 3A for the ARRL Field Day.
Radios included an Icom IC-756 Pro, TenTec Omni VII, Icom IC-746 (for the GOTA) and a Icom 7000 for VHF plus HF spare. All these radios performed quite well despite the high temperatures.
The 100 Watt Elecraft K2 stood above the others not necessarily on performance, but the elegant way the radio’s owner configured his K2, 100 Watt Amplifier and 100 Watt Matcher.
During our Sunday night Tech Net in Northern Virginia one of the participants described a 140 watt amplifier he just finished building for use on the HF bands.
My immediate thought was “Hmmm, he already has a 100 watt style typical HF radio. Why does he need something that does 140 watts?”
The I remembered he also has a QRP rig which generates the typical 5 watts or so and this linear amplifier allows this QRP rig to be just like the typical 100 watt radios when you need or want it.
The amplifier concept comes from a company called…
For those of you preparing to take the plunge into QRO power for your ham shack, you are advised to take an hour and read this web site…