There are a multiplicity of transmission modes both new and old at the disposal of a radio amateur, but the leader of the pack is still single-sideband or SSB. An SSB transmitter emits the barest ...

The project consists of 5 vacuum tubes without ICs or transistors for making a true SSB QRP transceiver for 20m Ham band. The project consists of 5 vacuum tubes without ICs or transistors for making a ...

The circuit has been designed to produce a transceiver that switches the 4-element 1500 Ohm external BPF ends between the inputs and outputs of the two SA602s to reverse the signal flow for R/T ...

Can you build a HF SSB radio transciever in one weekend, while on the road, at parts from a swap meet? I can, but apparently not without setting something on fire. Of course the swap meet I’m ...

Join thousands of government contractors who rely on GovCon Wire for the latest updates in federal spending, bid opportunities, and compliance changes. Whether you’re new to the space or scaling up, ...

The Jan. 24 article in The Gazette 'The Attack on the USS Pueblo” 50 years ago pointed out that the Pueblo carried the latest in communications and cryptographic hardware. That included the latest ...