QRSS and QRPp is an excellent combination.
The reduction in speed, can be translated directly into a reduction in power.
So if you are bored with 1 watt, then try this simple attenuator, which is built with good available E12-series resistors.
The input power of the attenuator is 1 watt, if the maximum power dissipation of each resistor is 1/2 watt.
This attenuator can be used to WSPR with very low power.
With the FT-817 on 1 watt, the power is reduced to 10 mW.
And with 500 mW the power of the FT-817 is reduced to 5 mW.
The difference between 10 mW and 5 mW will not be noticed, except if you look carefully at the remote S-meter of the receiving WSPR station.
7 Resistors and a switch is all you need for WSPR with QRPp with 10 mW. hi
But notice that the attenuator is also giving 20 dB attenuation while receiving.
Power Attenuator 1000 Miles per Watt WSPR Propagation Analysis
Working with the Lowest possible power in CW QSO's with QRP and QRPp
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dinsdag 26 april 2011
Attenuator of 20 dB to WSPR with 10 mW
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