I hit the F11 Key which tuned the radio to the frequency and mode, identified the station and when it was my turn, made the call.
Homemade cb radio box software#
My logging software received a DX spot at 7.165 Mhz. I was rag-chewing on 7.245 MHz using a solid state radio at 100 watts. It is on the 160, 75/80, 40 and 30 meter bands where most antennas will only have a 2:1 or less on a portion of the band. On the bands above 20 meters most antennas, once set to the either the SSB sub-band or CW sub-band need no other tuning. But we still find that we need to watch the SWR on these new radios. Now most radios are looking for a matched 50 ohm load with NO final tuning. Most of these radios would load between 50 ohms to 75 ohm antennas. You dipped the plate current and increased the load (the circuit in the radio was a pi network and you had two variable capacitors and an inductor in the output tuning circuit (just like your antenna tuner), the coil was taped for each band covered but the plate and load capacitors needed to be adjusted for each frequency within the band. In the 1970s you still had narrow band tube finals, so you had to learn to tune the transmitter to your antenna.
More modern HF radios are now Transceivers (Receiver, Transmitter, switching circuits all included). Go back to the 1960s and you had a receiver, transmitter, maybe an R/T antenna switch that also muted the receiver, trans-match (antenna tuner), SWR bridge, and on and on. In the past you had a separate box for each function. The good news is that with newer radios it gets very easy compared to the goo ole days. Setting up your station can be a bit of a pain.
Homemade cb radio box registration#
Registration & Donate for Operational Expenses.WIRELESS NETWORKING – MESH for Ham Operators.CircuitLab – on-line Sketch, simulate, and share schematics.Essential & Practical Circuit Analysis: Part 1- DC Circuits.EM Wave Spectrum – Professor Matt Anderson, PhD.ARC Club Officer’s Guide (Password Protected).Articles of Incorporation & By-Laws of the Alexandria Radio Club, Inc.
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