I have picked up some vintage treasures from eBay including an original Ameco AC-1. I also have an SDRPlay RSP-2 Software Defined Radio that I have not found a good use. So why not use the Ameco AC-1 to transmit and The RSP-2 for receive. I will need a transmit/receive switch to keep from damaging the SDR. For that, I am using an MFJ 1708B RF Sense SDR Receiver TR Switch. I am letting it switch on RF sense. The AC-1 is set up for 40 meters and uses crystals to set the frequency. I get four watts RF out.
|SDR Play RSP-2 in the foreground.|
I enjoy the glow of the 6V6 and the 6X5 tubes just like the novices did for their first QSO .way back when. You know the RSP-2 is a pretty good receiver for a little over one hundred dollars. I am using the free HDSDR software on my laptop. You could homebrew some transmitters and use the RSP-2 for the receiver. You can't monitor your transmitted CW with it because the SDR latency will throw you off. I need a mute circuit for an external speaker so I don't have to mute the speaker myself.
|The MFJ SDR TR Switch|
My antenna was my 30 ft horizontal, and 20 ft vertical loop fed a the bottom center. The lower wire is ten feet above the ground. Hurricane Michael took all my trees I used for antenna support. So this loop that I constructed for Field Day comes in handy. It uses three 31 ft Jackite poles for support. I already had an SGC tuner just outside the house back wall. I ran 300-ohm balanced feedline between the loop and the tuner. The antenna tunes nicely on 40, 30, 20, 17, and 15 meters.
|The Field Day loop comes in handy after Hurricane Michael. It replaces the 132-foot doublet I had in the trees. Now no trees.|
|HDSDR software on the laptop|
BTW, I used VIZ Isotap II Isolation and switched autotransformer to avoid getting shocked. I am not sure if it was necessary, but I did it anyway. If you are wondering I have several AC-1s. This one is an original and worked on the first try.
|VIZ isolated autotransformer|