1. and 2. The values are in my research paper "WE-13C Transmitter Harmonic Power Output" on the TIGHAR website.

3. REQ = 44 dB; SNR= -3 dB, SNRUP = 20.0 dB.

4. REQ = 44 dB; SNR = 7 dB, SNRUP = 9.8 dB.

5. SSN = 91.

Thanks, Bob.

1. and 2. The values are in my research paper "WE-13C Transmitter Harmonic Power Output" on the TIGHAR website.

I find that paper, and the powers given in it, to be way off the mark. I’ll begin to explain that by posting what I had in mind when I made my

11 July post regarding the paper. (The post is

here.)

3. REQ = 44 dB; SNR= -3 dB, SNRUP = 20.0 dB.

4. REQ = 44 dB; SNR = 7 dB, SNRUP = 9.8 dB.

I calculated 0.0013 for the data in (3.) and 0.00000065 for that in (4.), so I think I see how you’re doing the probabilities. I used Excel’s NORMSDIST( ) function for the standard normal cumulative distribution. What do you use?

I’ve examined the RELBIL and FNORML( ) functions that VOACAP uses for calculation of reliability, REL. FNORML( ) is a bit crude above a couple standard deviations, so the REL and probability results diverge for larger deviations, but it seems clear that your probability and VOACAP’s reliability (and ICEPAC’s) are calculated in the same way and represent the same thing.

The smallest non-zero reliability (probability) reported by ICEPAC and VOACAP is 0.01. Do you think there is a reason why the program authors chose not to cut it closer than that?

5. SSN = 91.

ICEPAC is intended for use with smoothed monthly (12-month running mean) sunspot numbers. The value you indicated, 91, was the

*daily* sunspot number for 2 Jul 37 and 5 Jul 37. How do you justify using it?

Chuck