This rig had a very limited production run and never became a full product line. Coming out in 1975 it is solid state and noteworthy No Tune/Load/or Grid Drive Controls.
E F Johnson Avenger... NICE!
I could see myself owning one of these jewels. Perfect for small operating desks. Covers the 80, 40, 20, 15 and 10 Meters with USB/LSB and CW. Supposedly good for 150 watts and only a handful (I think around 25) were built. The above unit was up for auction on eBay about 18 years ago listed at $800. Gulp!
What a productive day yesterday as it was not too hot in the garage and we went down our to do list.
More Stuff Installed
My first concern was heat in the box as the main tube module is compact and we are installing this heat generator inside of a case. Thus, I planned for a fan installation. Two minutes with the Carbide Create Design Software and I had a CNC program to cut a three-inch circular hole in the back panel. About five minutes on the CNC and we have a fan port.
Fan Installation
Quiet & Cool!
Metal Cutting on the CNC
The next item was the front panel and the installation of 5 controls including locating and installing the hole for the Plate Tuning capacitor penetration.
Tuning Cap Penetration.
Operational Control Installations
To be installed on the front panel are the Power Switch, USB/LSB Select and the MOX control. I have not installed the antenna connector and several RCA jacks as yet on the back panel.
One of the back panel RCA jacks will be the power connector for the newly installed fan. That install will have a 100nF cap across the RCA jack. For those who like to pick nits, I intend to install a piece of metal window screen between the back panel and the front face of the fan. This will assure continuous shielding.
Once all the metal bashing is done, we will start the connections to the built hardware and once finished performing a systems test that a QRP signal is coming out of the IRF510. Only then will I start the build of the 12GE5 stage. Chunking the tasks this way it leaves the only unknown as the 12GE5 stage
Them that know can make it go. Are you better off today with you know who?
73's
Pete N6QW