KarlS wrote:National Geographic 265NC (re-branded Fine Offset WH1080) has a sticker on the back that says 915MHz.
Just a couple of things to add to what others have said: -
1. The LCD unit is useful to see when you expect a signal to be received - the little RF icon shows briefly.
2. The LCD unit might also be useful to learn the exact frequency - mine has a sticker on the inside of the case - stating it as 433.92MHz. It might be worth having a look (even if it's not correct, you have to start looking somewhere).
3. Your output looks valid enough, though I've never seen such an uncongested band (lots of '0', very few 100s) - I suppose there's just not a lot of noise in the 915MHz band. Is this because you're in a relatively remote location? I'd choose the settings corresponding to the 8.nnn value or the preceding zero. Other combinations would probably work.
A note on the table that gets produced when the program starts - this is the output generated by iterating over each possible amplification setting, each RSSI threshold value, and each bandwidth setting.
For each and every permutation, the DRSSI (Digital Received Signal Strength Indicator) value is sampled, a number of times at a fixed interval, from the RFM01 module, and the number generated gives an indication of how often DRSSI was high - 100 means it was high 100% of the time for that permutation of parameters, 0% means it was never seen to be high for that permutation of parameters.
Where you see 100 (or even just 20), you're unlikely to find a clear signal with the corresponding parameters, because there's too much background noise getting through - noise will probably just bleed into the signal, unless the signal from the transmitter is particularly strong.
Where you see zero is a bit more ambiguous, because the settings may be to restrictive to get any signal at all - noise or data-packet. On the other hand, they may be ideal for ignoring noise and permitting a data-packet.
You have lots of zeros, so lots of places to look for your strong and clean signal...a mixed blessing, but it'll be interesting to learn if you get it working with the National Geographic unit.