|2. The Transceiver |
Having chosen a rig that gives you optimum performance on receive and an effective antenna system you can now turn your attention to the transmit side of things. While many stations will simply go out and purchase or build a beefy linear amp, for the town and city dweller such an option is often not feasible due to interference concerns. With CW, most of the time high power is not needed and you can get by with the standard 100W or less.
SSB talk power
For SSB the aim should be to increase the average 'talk power' of the radio. If you look at the output of an SSB radio on a power meter while talking into the mike, you will see that the power is not constant and can vary widely, peaking at maximum only occasionally (this is a rough guide as an analogue meter cannot accurately respond to the SSB power fluctuations and you will more than likely not get a true indication of the peak talk power). You can increase the average power and the peak power by using some form of speech processing such as clipping or compression. Many rigs have built in speech processors that increase the talk power considerably. For those that do not, the use of an external processor is recommended although care should be taken to ensure that the rig is not overdriven or distortion may result. Often the use of a preamplifier microphone in conjunction with speech processing will boost the talk power even more.
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