Would it be good/better if the next hop choice was random order amongst your
bands instead of just a continuously random band?
This way you'd be guaranteed to visit each band in an N-transmit * N-bands
period instead of Las Vegas odds where you can get bad runs and never touch
a band for quite a while.
I would think the permutations of desired bands would be more than enough
randomness.
In other words rather than this:
int target_index = static_cast<int> (qrand () % num_bands); // random choice
Do this:
int target_index = next_band(num_bands, false); // next in randomized
available list
auto WSPRBandHopping::next_band(int num_bands, bool reset)
{
static int saved_bands;
static std::queue<int> bandlist;
if (reset || num_bands != saved_bands || bandlist.size() ==
0) {
saved_bands = num_bands;
for(auto i=0;i<num_bands;++i) {
bandlist.push(qrand () %
num_bands);
}
}
int idx = bandlist.front();
bandlist.pop();
return idx;
}
I put a reset flag in just for grins if needed.
I also notice that qsrand is done twice. I assume that's a boo-boo?
Modulator.cpp: qsrand (QDateTime::currentMSecsSinceEpoch()); // Initialize
random seed
psk_reporter.cpp: qsrand(QDateTime::currentDateTime().toTime_t());
73
Mike W9MDB
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