[Lowfer] Strange 185300 signal

[Bill Ashlock]

>How about a receiver with no antenna connected and look at
>it in your house?

Mike, I think I just figured it out as I was reading your suggestion! 
Disconnecting the antenna IS what I do to monitor my signal, but even with 
the antenna disconnected, I still have to reduce the ARGO Sensitivity 
adjustment to almost full off - and then there's no noise to simulate a 
marginal receiving condition. What I just did was to reduce the transmitted 
signal to about -60db by inserting a 10k pot in series with the Vcc running 
to the final. Now I can set the Sensitivity to the normal amount and I can 
see background noise that is close to the real-life amount. Thanks!

By thinking about this I also just now came up with the reason why a 1 to 2 
db signal level cannot be seen, on average, with QRSS - even though I can 
indeed prove the opposite right at this minute. Because the received signal 
is randomly varying at least 2 db in a skywave situation, there is no 
defined threshold in which to detect a small signal level change. If the 
signal were constant, as it is in my setup with ARGO looking at WA, right 
now, I can show that there IS a sharp threshold, and 1 db makes a lot of 
difference.

I also came up with an idea to simulate a randomly varying signal. There's a 
random number generator in BASIC and I can use this to apply a 2 bit (4 
level) power level control to the transmitted signal and view the results 
right here. Thanks again!

Bill A

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